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        16 Part Time API jobs in Essex + 20 miles

        Axway API Developer

        Randstad Digital
        EC1, City of London
        £500 - £650 per day
        6 months contract Inside IR35?? £500 to £650 a day?? Remote Working (UK based) *Active SC Clearance is needed* A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and active SC clearance is required. The main focus of this role is to design and develop Axway policies while maintaining automated testing and code deployment. You will also be responsible for liaising with stakeholders to define requirements and design comprehensive solutions. * Axway's core products: Policy Studio, API Gateway, and API Manager. * Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. * Data and messaging formats: JSON, XML, SOAP, and REST. * Linux scripting and environments. * Using DevOps toolsets to automate testing and deployments.
        6 months contract Inside IR35?? £500 to £650 a day?? Remote Working (UK based) *Active SC Clearance is needed* A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and active SC clearance is required. The main focus of this role is to design and develop Axway policies while maintaining automated testing and code deployment. You will also be responsible for liaising with stakeholders to define requirements and design comprehensive solutions. * Axway's core products: Policy Studio, API Gateway, and API Manager. * Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. * Data and messaging formats: JSON, XML, SOAP, and REST. * Linux scripting and environments. * Using DevOps toolsets to automate testing and deployments.
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        NEWFEATURED

        Mulesoft Technical Lead

        LA International Computer Consultants Ltd
        Lambeth, SE1 7ND
        £700 - £765 per day
        Required: Mulesoft Technical Lead Location: Remote Duration: 12 month initial contract IR35 Status: Inside Working with the Project Manager, architects, clients & other stakeholders to implement MuleSoft APIs. This role will require knowledge of MuleSoft's Anypoint Studio & Anypoint Platform, which includes Design Center, Runtime Manager, API Manager, Exchange, etc. You must be capable of understanding business requirements, working with stakeholders & implementing complex integrations. Responsibilities: Designing & developing integration solutions using MuleSoft Anypoint Platform. Building & maintaining integration flows using MuleSoft's Anypoint Studio. Creating & implementing custom connectors and modules. Collaborating with other developers & stakeholders to understand business requirements & translate them into integration solutions.
        Required: Mulesoft Technical Lead Location: Remote Duration: 12 month initial contract IR35 Status: Inside Working with the Project Manager, architects, clients & other stakeholders to implement MuleSoft APIs. This role will require knowledge of MuleSoft's Anypoint Studio & Anypoint Platform, which includes Design Center, Runtime Manager, API Manager, Exchange, etc. You must be capable of understanding business requirements, working with stakeholders & implementing complex integrations. Responsibilities: Designing & developing integration solutions using MuleSoft Anypoint Platform. Building & maintaining integration flows using MuleSoft's Anypoint Studio. Creating & implementing custom connectors and modules. Collaborating with other developers & stakeholders to understand business requirements & translate them into integration solutions.
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        Location:West London (Hybrid 2 days/week on site, hear Heathrow) Contract:6 months initial (extensions highly likely) Start:ASAP Eligibility:UK-based candidates only Rate:Market rates We re seeking aGraphQL-focused Software Engineerwho can design, implement and evolve high-performing APIs that scale. If crafting elegant GraphQL schemas, building robust TypeScript/Node.js services, and deploying to cloud-native environments is your idea of fun, this is your next project. What You ll Do * Design & developGraphQL APIs from schema design to production integration, ensuring performance, flexibility, and maintainability. * Buildscalable TypeScript/Node.js servicesthat integrate seamlessly with modern frontends and data sources. * ApplyDevOps best practicesto deliver through CI/CD pipelines (Jenkins, Concourse), Docker, Helm, and Kubernetes.
        Location:West London (Hybrid 2 days/week on site, hear Heathrow) Contract:6 months initial (extensions highly likely) Start:ASAP Eligibility:UK-based candidates only Rate:Market rates We re seeking aGraphQL-focused Software Engineerwho can design, implement and evolve high-performing APIs that scale. If crafting elegant GraphQL schemas, building robust TypeScript/Node.js services, and deploying to cloud-native environments is your idea of fun, this is your next project. What You ll Do * Design & developGraphQL APIs from schema design to production integration, ensuring performance, flexibility, and maintainability. * Buildscalable TypeScript/Node.js servicesthat integrate seamlessly with modern frontends and data sources. * ApplyDevOps best practicesto deliver through CI/CD pipelines (Jenkins, Concourse), Docker, Helm, and Kubernetes.
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        Data Engineer

        JAM Recruitment Ltd
        St James, SW1Y 5AD
        £650 - £745 per day + Umbrella, inside IR35
        eSC Cleared Data Engineer Bristol or London (Mostly working from home) Up to £745 per day (Umbrella, Inside IR35) Must hold live and transferrable Enhanced SC Security Clearance About the Role We're seeking an experienced Data Engineer to join a high-profile programme, working with cutting-edge cloud and data technologies. You'll be instrumental in building, optimising, and maintaining scalable data pipelines and platforms that underpin mission-critical systems. If you thrive on solving complex data challenges, working with modern orchestration tools, and applying best practices in security and compliance, this role offers both technical depth and impact. Key Responsibilities * Design & Optimise Pipelines - Build and refine ETL/ELT workflows using Apache Airflow for orchestration.
        eSC Cleared Data Engineer Bristol or London (Mostly working from home) Up to £745 per day (Umbrella, Inside IR35) Must hold live and transferrable Enhanced SC Security Clearance About the Role We're seeking an experienced Data Engineer to join a high-profile programme, working with cutting-edge cloud and data technologies. You'll be instrumental in building, optimising, and maintaining scalable data pipelines and platforms that underpin mission-critical systems. If you thrive on solving complex data challenges, working with modern orchestration tools, and applying best practices in security and compliance, this role offers both technical depth and impact. Key Responsibilities * Design & Optimise Pipelines - Build and refine ETL/ELT workflows using Apache Airflow for orchestration.
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        We have an exciting opportunity for a Senior Salesforce Administrator / Developer(Technical Specialist) at NPL. The focus for this role is to lead on the design, development, and support of the platform. Youll be joining the Enterprise Systems team. Salesforce is becoming a crucial business tool within NPL and we require a Snr Salesforce Administrator/Developer(Technical Specialist) to support the adoption within the business. The person will be required to collaborate withkey stakeholders in the organisation, including Sales, Marketing, Commercial Excellence,business analysts,project managersand end-users to gather and analyse their business needs and requirements, and to consequently drive the development of the Salesforce platform in response to those needs to meet strategic objectives.
        We have an exciting opportunity for a Senior Salesforce Administrator / Developer(Technical Specialist) at NPL. The focus for this role is to lead on the design, development, and support of the platform. Youll be joining the Enterprise Systems team. Salesforce is becoming a crucial business tool within NPL and we require a Snr Salesforce Administrator/Developer(Technical Specialist) to support the adoption within the business. The person will be required to collaborate withkey stakeholders in the organisation, including Sales, Marketing, Commercial Excellence,business analysts,project managersand end-users to gather and analyse their business needs and requirements, and to consequently drive the development of the Salesforce platform in response to those needs to meet strategic objectives.
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        Skills * 5+ years of experience in IAM, with at least 3 years as a SailPoint specialist. * Strong hands-on experience with SailPoint IdentityIQ or IdentityNow. * Proficiency in Java, BeanShell, REST APIs and scripting languages (e.g., PowerShell, Python). * Experience integrating SailPoint with systems like Active Directory, Azure AD, Workday, ServiceNow etc. * Solid understanding of RBAC, ABAC, access certifications, provisioning and identity lifecycle management. * Familiarity with identity governance frameworks and compliance requirements. * Excellent communication, documentation and stakeholder engagement skills. Role * Act as the primary subject matter expert for SailPoint IdentityNow or IdentityIQ. * Lead design, implementation and integration of SailPoint solutions into existing identity infrastructure.
        Skills * 5+ years of experience in IAM, with at least 3 years as a SailPoint specialist. * Strong hands-on experience with SailPoint IdentityIQ or IdentityNow. * Proficiency in Java, BeanShell, REST APIs and scripting languages (e.g., PowerShell, Python). * Experience integrating SailPoint with systems like Active Directory, Azure AD, Workday, ServiceNow etc. * Solid understanding of RBAC, ABAC, access certifications, provisioning and identity lifecycle management. * Familiarity with identity governance frameworks and compliance requirements. * Excellent communication, documentation and stakeholder engagement skills. Role * Act as the primary subject matter expert for SailPoint IdentityNow or IdentityIQ. * Lead design, implementation and integration of SailPoint solutions into existing identity infrastructure.
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        Role: ServiceNow Developer Salary/Rate: £600-700 Location: hybrid multiple locations available Contract Duration: 12 months We are currently looking for a ServiceNow Developer for our government client. This ServiceNow Developer role is hybrid, based between 2 days per week on site and the remainder of the week working remotely. Office locations include most major towns, with London being a preference. The contract for the ServiceNow Developer position is for 12-months with potential to extend, operating inside IR35. Security Clearance: Security Check ('SC Clearance') This role is inside IR35 - Due to the service of the role, it will now be based on an Umbrella solution. * Proficiency in JavaScript: Core scripting language used in ServiceNow. * Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB.
        Role: ServiceNow Developer Salary/Rate: £600-700 Location: hybrid multiple locations available Contract Duration: 12 months We are currently looking for a ServiceNow Developer for our government client. This ServiceNow Developer role is hybrid, based between 2 days per week on site and the remainder of the week working remotely. Office locations include most major towns, with London being a preference. The contract for the ServiceNow Developer position is for 12-months with potential to extend, operating inside IR35. Security Clearance: Security Check ('SC Clearance') This role is inside IR35 - Due to the service of the role, it will now be based on an Umbrella solution. * Proficiency in JavaScript: Core scripting language used in ServiceNow. * Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB.
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        Azure Administrator

        Queen Square Recruitment Limited
        EC2N, City of London
        From £400 to £500 per day inside IR35, DOE
        DB Admin & Developer Azure Cosmos DB Location:Central London Contract Type:6 month initial contract, starting ASAP Industry:Banking & Financial Services Day rate:Administrator £400 - 450 (TBC, inside IR35) Developer £450 - £500 (TBC, inside IR35) Our client, a large global consultancy, is seeking aDB Admin & Developerto play a key role in designing and developingscalable, secure, and high-performance applicationstailored for thebanking and financial servicessector. This is a hands-on role where you willarchitect cloud-native solutionsusingAzure Cosmos DB (SQL & Mongo APIs), designpartitioning strategies, indexing, and consistency models, and ensurereal-time processing of critical financial data. Key Responsibilities * Architect and develop cloud-native applications usingAzure Cosmos DB (SQL & Mongo APIs)
        DB Admin & Developer Azure Cosmos DB Location:Central London Contract Type:6 month initial contract, starting ASAP Industry:Banking & Financial Services Day rate:Administrator £400 - 450 (TBC, inside IR35) Developer £450 - £500 (TBC, inside IR35) Our client, a large global consultancy, is seeking aDB Admin & Developerto play a key role in designing and developingscalable, secure, and high-performance applicationstailored for thebanking and financial servicessector. This is a hands-on role where you willarchitect cloud-native solutionsusingAzure Cosmos DB (SQL & Mongo APIs), designpartitioning strategies, indexing, and consistency models, and ensurereal-time processing of critical financial data. Key Responsibilities * Architect and develop cloud-native applications usingAzure Cosmos DB (SQL & Mongo APIs)
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        AI/ML engineer - SC clearance

        LA International Computer Consultants Ltd
        EC1, City of London
        £500 - £550 per day
        Role: Backend engineer Rate: IR35 Status yet to be determined Location: Remote with occasional travel to London or Corsham Duration: 6-month initial contract SC clearance required. About the Role You are a systems thinker with deep experience in backend engineering and distributed data infrastructure. You thrive in high-stakes environments, know how to ship reliable code fast, and are pragmatic about trade-o=s. You understand the unique constraints of experimental, edge-deployable systems, especially in air-gapped environments where resilience and autonomy matter most. This role focuses on building and adapting backend services to support experimental AI systems deployed in sensitive Defence contexts. You will help create and manage robust, portable pipelines for data ingestion, orchestration, model interaction, and
        Role: Backend engineer Rate: IR35 Status yet to be determined Location: Remote with occasional travel to London or Corsham Duration: 6-month initial contract SC clearance required. About the Role You are a systems thinker with deep experience in backend engineering and distributed data infrastructure. You thrive in high-stakes environments, know how to ship reliable code fast, and are pragmatic about trade-o=s. You understand the unique constraints of experimental, edge-deployable systems, especially in air-gapped environments where resilience and autonomy matter most. This role focuses on building and adapting backend services to support experimental AI systems deployed in sensitive Defence contexts. You will help create and manage robust, portable pipelines for data ingestion, orchestration, model interaction, and
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        NEW

        Backend engineer

        LA International Computer Consultants Ltd
        EC1, City of London
        £500 - £550 per day
        Role: Backend engineer Rate: IR35 Status yet to be determined Location: Remote with occasional travel to London Duration: 6-month initial contract SC clearance required. About the Role You are a systems thinker with deep experience in backend engineering and distributed data infrastructure. You thrive in high-stakes environments, know how to ship reliable code fast, and are pragmatic about trade-o=s. You understand the unique constraints of experimental, edge-deployable systems, especially in air-gapped environments where resilience and autonomy matter most. This role focuses on building and adapting backend services to support experimental AI systems deployed in sensitive Defence contexts. You will help create and manage robust, portable pipelines for data ingestion, orchestration, model interaction, and
        Role: Backend engineer Rate: IR35 Status yet to be determined Location: Remote with occasional travel to London Duration: 6-month initial contract SC clearance required. About the Role You are a systems thinker with deep experience in backend engineering and distributed data infrastructure. You thrive in high-stakes environments, know how to ship reliable code fast, and are pragmatic about trade-o=s. You understand the unique constraints of experimental, edge-deployable systems, especially in air-gapped environments where resilience and autonomy matter most. This role focuses on building and adapting backend services to support experimental AI systems deployed in sensitive Defence contexts. You will help create and manage robust, portable pipelines for data ingestion, orchestration, model interaction, and
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        NEW

        Backend Engineer (.NET)

        Queen Square Recruitment Limited
        W1, Central London
        Up to £80,000 per annum
        We are looking for a skilled Backend Engineer with strong experience in .NET Core / .NET 6+ to join our team on a part-time basis (4 days per week) in London. You will work alongside AI, ML, and app development teams to build scalable, secure, and intelligent backend services. Key Responsibilities * Design, develop, and maintain scalable backend services using .NET Core / .NET 6+ * Collaborate efficiently on an AI-driven project alongside the customers Lead Backend Engineer * Work closely with ML Engineers, App Developers, and Data teams for integrated feature delivery * Design and build RESTful APIs to expose AI models and LLM prompt-based services * Integrate trained ML models into backend systems supporting real product features * Build and maintain infrastructure for data ingestion, processing, and secure storage
        We are looking for a skilled Backend Engineer with strong experience in .NET Core / .NET 6+ to join our team on a part-time basis (4 days per week) in London. You will work alongside AI, ML, and app development teams to build scalable, secure, and intelligent backend services. Key Responsibilities * Design, develop, and maintain scalable backend services using .NET Core / .NET 6+ * Collaborate efficiently on an AI-driven project alongside the customers Lead Backend Engineer * Work closely with ML Engineers, App Developers, and Data teams for integrated feature delivery * Design and build RESTful APIs to expose AI models and LLM prompt-based services * Integrate trained ML models into backend systems supporting real product features * Build and maintain infrastructure for data ingestion, processing, and secure storage
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        Cloud Security Engineer

        Invitise Ltd
        WC1A, Central London
        Up to £65,000 per annum + Excellent Benefits
        Were looking for a Senior Cloud Security Engineer for our growing, prestigious client in the data sector, based in London, on a permanent basis paying up to £65,000 plus great benefits. This role offers hybrid working with an expectation to be in the office 23 days per week. Youll be joining a technical team focused on strengthening cloud security and ensuring compliance across Microsoft Azure environments. This role will involve hands-on security engineering, working closely with infrastructure and DevOps teams, and supporting the adoption of Microsofts security toolset across the organisation. * Securing Azure environments in line with best practices - essential * Microsoft Defender (Cloud, Endpoint, 365) - essential * Sentinel - essential * Microsoft Purview, Compliance Manager and related compliance tools - essential
        Were looking for a Senior Cloud Security Engineer for our growing, prestigious client in the data sector, based in London, on a permanent basis paying up to £65,000 plus great benefits. This role offers hybrid working with an expectation to be in the office 23 days per week. Youll be joining a technical team focused on strengthening cloud security and ensuring compliance across Microsoft Azure environments. This role will involve hands-on security engineering, working closely with infrastructure and DevOps teams, and supporting the adoption of Microsofts security toolset across the organisation. * Securing Azure environments in line with best practices - essential * Microsoft Defender (Cloud, Endpoint, 365) - essential * Sentinel - essential * Microsoft Purview, Compliance Manager and related compliance tools - essential
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        Microsoft Active Directory Admin

        Infoplus Technologies UK Ltd
        East London, London, E1 7JF
        Unspecified
        Mandatory Skills: Microsoft Active Directory Admin Experience: 5-8 Years Active Directory/DHCP/DNS/Windows Server Infrastructure Azure Control Plane / Azure AD / Azure DNS / Azure IAAS & DEVOPS Programming in Azure / Microsoft capable languages, such as ARM / Bicep, PowerShell, yaml, Python and a understanding of Azure API's from the data plane HashiCorp Packer Experience and exposure working with DEVOPS CI / CD tools Knowledge on Azure desired state configuration and package management A good understanding of the Azure wider eco system storage, networking, Azure Monitor and Azure Security Centre making progress
        Mandatory Skills: Microsoft Active Directory Admin Experience: 5-8 Years Active Directory/DHCP/DNS/Windows Server Infrastructure Azure Control Plane / Azure AD / Azure DNS / Azure IAAS & DEVOPS Programming in Azure / Microsoft capable languages, such as ARM / Bicep, PowerShell, yaml, Python and a understanding of Azure API's from the data plane HashiCorp Packer Experience and exposure working with DEVOPS CI / CD tools Knowledge on Azure desired state configuration and package management A good understanding of the Azure wider eco system storage, networking, Azure Monitor and Azure Security Centre making progress
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        * London, City of London, GB, EC2R 8HP * Essen, NW, DE, 45141 * Swindon, Wiltshire, GB, SN5 6PB RWE Supply & Trading GmbH To start as soon as possible, full time / part time, permanent Functional area: IT / Digital Remuneration: tariff/non-tariff Department Insights Its an exciting time to join us! RWE Supply & Trading has recently introduced a new cloud based data analytics platform and as part of a new and expanding team we are looking for an experienced Software Engineer to play key role in expanding our platform capability. Using the latest tech, the Lead in Data (LiD) platform has revolutionised the searching, sharing, transforming and on-boarding of Data within our organisation. Data is the fundamental backbone to the companys trading and analysis communities as well as support functions and will become an ever increasing asset across the group in the future.
        * London, City of London, GB, EC2R 8HP * Essen, NW, DE, 45141 * Swindon, Wiltshire, GB, SN5 6PB RWE Supply & Trading GmbH To start as soon as possible, full time / part time, permanent Functional area: IT / Digital Remuneration: tariff/non-tariff Department Insights Its an exciting time to join us! RWE Supply & Trading has recently introduced a new cloud based data analytics platform and as part of a new and expanding team we are looking for an experienced Software Engineer to play key role in expanding our platform capability. Using the latest tech, the Lead in Data (LiD) platform has revolutionised the searching, sharing, transforming and on-boarding of Data within our organisation. Data is the fundamental backbone to the companys trading and analysis communities as well as support functions and will become an ever increasing asset across the group in the future.
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        Join the API Revolution at GraviteeWhere Innovation Meets Growth Since our beginnings in 2015, Gravitee has grown into a global force, recognised as a 2024 Gartner Magic Quadrant Leader for API Management. What started with four developers challenging the complexities of APIs has evolved into a revolutionary platform powering API and event stream ecosystems worldwide. Were driving digital transformation for top enterprises, from Michelin to Roche to Blue Yonder and beyond, offering unmatched control over APIs and event streams. * Passion : We bring excitement to everything we do, constantly innovating to stay ahead of the curve. * Hold Nothing Back : We go above and beyond to help customers and teammates succeed, holding ourselves to the highest standards.
        Join the API Revolution at GraviteeWhere Innovation Meets Growth Since our beginnings in 2015, Gravitee has grown into a global force, recognised as a 2024 Gartner Magic Quadrant Leader for API Management. What started with four developers challenging the complexities of APIs has evolved into a revolutionary platform powering API and event stream ecosystems worldwide. Were driving digital transformation for top enterprises, from Michelin to Roche to Blue Yonder and beyond, offering unmatched control over APIs and event streams. * Passion : We bring excitement to everything we do, constantly innovating to stay ahead of the curve. * Hold Nothing Back : We go above and beyond to help customers and teammates succeed, holding ourselves to the highest standards.
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        Company Description The National Institute for Health and Care Research (NIHR) is funded by the Department of Health and Social Care (DHSC). We work in partnership with the NHS, universities, local government, other research funders, patients and the public. The NIHR funds, enables and delivers world-leading health and social care research that improves people's health and wellbeing and promotes economic growth. We are also a major funder of applied health research in low and middle income countries. Job Description The Data and Insights team provides analytical support to internal teams and external customers. As a member of this team, reporting to the Data Analytics Lead, you will be interacting with all areas of the business, providing ad-hoc and routine analytical support.
        Company Description The National Institute for Health and Care Research (NIHR) is funded by the Department of Health and Social Care (DHSC). We work in partnership with the NHS, universities, local government, other research funders, patients and the public. The NIHR funds, enables and delivers world-leading health and social care research that improves people's health and wellbeing and promotes economic growth. We are also a major funder of applied health research in low and middle income countries. Job Description The Data and Insights team provides analytical support to internal teams and external customers. As a member of this team, reporting to the Data Analytics Lead, you will be interacting with all areas of the business, providing ad-hoc and routine analytical support.
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        98 exact matches jobs are outside your preferred location

        My client is a high-profile consultancy who require an Endur Solution Architect, with experience in Endur and in Energy Trading and Risk Management (ETRM) systems, to work closely with an end customer. * Proven expertise as a Subject Matter Expert (SME) in Energy Trading and Risk Management (ETRM) systems, with deep specialization in Endur. * Ability to deliver strategic guidance and solutions for complex trading and risk management scenarios. * Strong capability to optimize Endur functionalities across front-office, middle-office, and back-office operations. * Demonstrated technical leadership in Endur-related projects, ensuring alignment with business goals and industry standards. * Solid understanding of system integration principles, including APIs, middleware, and data interfaces for seamless enterprise connectivity.
        My client is a high-profile consultancy who require an Endur Solution Architect, with experience in Endur and in Energy Trading and Risk Management (ETRM) systems, to work closely with an end customer. * Proven expertise as a Subject Matter Expert (SME) in Energy Trading and Risk Management (ETRM) systems, with deep specialization in Endur. * Ability to deliver strategic guidance and solutions for complex trading and risk management scenarios. * Strong capability to optimize Endur functionalities across front-office, middle-office, and back-office operations. * Demonstrated technical leadership in Endur-related projects, ensuring alignment with business goals and industry standards. * Solid understanding of system integration principles, including APIs, middleware, and data interfaces for seamless enterprise connectivity.
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        Software Developer - Active SC, Python, AWS

        Hays
        London
        £400.0 - £425.0 per day + up to £425 per day (InsideIR35)
        Up to £425 per day (Inside IR35) London / Primarily Remote 8 Months My client is an international consultancy, who require a Software Developer that holds active SC clearance, with Python, Terraform and AWS to work closely with a key end client. * Proven experience as a software developer with data integration experience (API) * Extensive experience programming in Python * Active Security Clearance (SC) * Expertise in AWS, Kubernetes and CI/CD (Continuous Integration / Continuous Deployment) * Strong working knowledge of Elastic, Kibana and React * Excellent communication skills * Working knowledge of Docker / Single Sign On * Familiarity with Agile practices If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
        Up to £425 per day (Inside IR35) London / Primarily Remote 8 Months My client is an international consultancy, who require a Software Developer that holds active SC clearance, with Python, Terraform and AWS to work closely with a key end client. * Proven experience as a software developer with data integration experience (API) * Extensive experience programming in Python * Active Security Clearance (SC) * Expertise in AWS, Kubernetes and CI/CD (Continuous Integration / Continuous Deployment) * Strong working knowledge of Elastic, Kibana and React * Excellent communication skills * Working knowledge of Docker / Single Sign On * Familiarity with Agile practices If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
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        Senior Dataverse & Power Platform Integration Developer Outside IR35 | Circa £500 p/d | Hybrid (Near London) | Immediate Start We are seeking an experienced Senior Software Developer with strong Dataverse, Power Platform, and Azure integrations experience for a high-impact contract. You will be working on the delivery of a secure, fully orchestrated client lifecycle management system for a leading professional services organisation. This role involves end-to-end integration delivery - from configuring Microsoft Fabric & Dataverse environments, building ETL pipelines, and crafting API endpoints, to enabling workflow automation with Logic Apps and Power Platform. You will collaborate closely with technical and business teams to ensure secure, accurate, and reliable data movement across the ecosystem. Responsibilities * Configure Microsoft Fabric & Dataverse environments
        Senior Dataverse & Power Platform Integration Developer Outside IR35 | Circa £500 p/d | Hybrid (Near London) | Immediate Start We are seeking an experienced Senior Software Developer with strong Dataverse, Power Platform, and Azure integrations experience for a high-impact contract. You will be working on the delivery of a secure, fully orchestrated client lifecycle management system for a leading professional services organisation. This role involves end-to-end integration delivery - from configuring Microsoft Fabric & Dataverse environments, building ETL pipelines, and crafting API endpoints, to enabling workflow automation with Logic Apps and Power Platform. You will collaborate closely with technical and business teams to ensure secure, accurate, and reliable data movement across the ecosystem. Responsibilities * Configure Microsoft Fabric & Dataverse environments
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        Job Role: Full-Stack JavaScript Developer Contract Duration: 3 month contract Location: Remote (UK only) Daily rate: £350 per day (Outside IR35) We are seeking a highly skilled Full-Stack JavaScript Developer to lead the build of a new client website using Next.js, Tailwind CSS, and Contentful CMS. You will be responsible for front-end development, CMS integration, and deployment, working closely with designers, QA, and project managers to deliver a fast, modern, and reliable site on time. * Build a responsive, accessible, and high-performance front-end using Next.js and Tailwind CSS. * Build performance backend API services using Next.js * Set up new Contentful environments and keep the backend synchronised with the external Contentful CMS using Contentfuls API * Collaborate with QA and UAT teams to resolve issues quickly.
        Job Role: Full-Stack JavaScript Developer Contract Duration: 3 month contract Location: Remote (UK only) Daily rate: £350 per day (Outside IR35) We are seeking a highly skilled Full-Stack JavaScript Developer to lead the build of a new client website using Next.js, Tailwind CSS, and Contentful CMS. You will be responsible for front-end development, CMS integration, and deployment, working closely with designers, QA, and project managers to deliver a fast, modern, and reliable site on time. * Build a responsive, accessible, and high-performance front-end using Next.js and Tailwind CSS. * Build performance backend API services using Next.js * Set up new Contentful environments and keep the backend synchronised with the external Contentful CMS using Contentfuls API * Collaborate with QA and UAT teams to resolve issues quickly.
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        WEB DEVELOPER (CUSTOM DASHBOARDS & DATA INTEGRATION) Digimasters Ltd was founded in 2017 as a digital transformation consultancy focused on technology, business process optimisation and data analytics. Digimasters works across all industries and provides experience in organisations of all sizes. Primarily based in London, UK, we work in many regions including the US, EU, APAC and the Middle East. Digimasters takes on additional talent during large programmes of work. For our engagements with clients in Architecture, Engineering, and Construction (AEC), as well as other sectors, we have several roles supporting the delivery of technology, business change, and data programmes. Were looking for a skilled Web Developer to join the Digimasters team, specialising in building custom dashboards and web applications that integrate seamlessly with enterprise data sources.
        WEB DEVELOPER (CUSTOM DASHBOARDS & DATA INTEGRATION) Digimasters Ltd was founded in 2017 as a digital transformation consultancy focused on technology, business process optimisation and data analytics. Digimasters works across all industries and provides experience in organisations of all sizes. Primarily based in London, UK, we work in many regions including the US, EU, APAC and the Middle East. Digimasters takes on additional talent during large programmes of work. For our engagements with clients in Architecture, Engineering, and Construction (AEC), as well as other sectors, we have several roles supporting the delivery of technology, business change, and data programmes. Were looking for a skilled Web Developer to join the Digimasters team, specialising in building custom dashboards and web applications that integrate seamlessly with enterprise data sources.
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        Senior C# Developer

        Hays
        London
        £420.0 - £460.0 per day + up to £460 per day (Outside IR35)
        Up to £460 per day (Outside IR35) Primarily Remote Initially 3 months I am working with an instantly recognisable consultancy who require a C# .Net Developer with hands-on experience with Apache Kafka and Confluent Kafka, and a strong background in cloud-native development using Docker and Azure. * Proven experience as a C# .Net Developer * Strong experience in building and managing Kafka clusters and topics. * Recent experience developing Microservice based solutions * Strong knowledge of version control systems such as Git and associated CI/CD tooling (ideally with Azure DevOps, Jenkins or similar) * Experience working with structured data formats and APIs (JSON Payloads). * Knowledge of schema evolution and validation practices (JSON Schema Registry). * Ability to containerize applications and manage Docker images.
        Up to £460 per day (Outside IR35) Primarily Remote Initially 3 months I am working with an instantly recognisable consultancy who require a C# .Net Developer with hands-on experience with Apache Kafka and Confluent Kafka, and a strong background in cloud-native development using Docker and Azure. * Proven experience as a C# .Net Developer * Strong experience in building and managing Kafka clusters and topics. * Recent experience developing Microservice based solutions * Strong knowledge of version control systems such as Git and associated CI/CD tooling (ideally with Azure DevOps, Jenkins or similar) * Experience working with structured data formats and APIs (JSON Payloads). * Knowledge of schema evolution and validation practices (JSON Schema Registry). * Ability to containerize applications and manage Docker images.
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        Hiring: Senior Platform/DevOps Engineer – AWS Location: London (Hybrid – min. 1 day/week)? Contract: 6 months | £600–£700/day (Inside IR35) We're looking for a Senior AWS Platform Engineer to play a hands-on role in a major API infrastructure migration project. You’ll lead the transformation from a legacy EC2 setup to a modern, containerised architecture with Kong Gateway, working closely with SREs, architects, and platform teams. * AWS (ECS, IAM, networking, core services) * Terraform (IaC) * GitLab CI/CD * Kong API Gateway (hybrid model) * Datadog (observability) * Jira, Confluence * 7+ years in DevOps/Platform Engineering * Deep, hands-on AWS experience (ideally recent) * Proven skills in Terraform + GitLab pipelines * Experience migrating from EC2 to ECS/containerised environments * Strong understanding of API gateways (Kong)
        Hiring: Senior Platform/DevOps Engineer – AWS Location: London (Hybrid – min. 1 day/week)? Contract: 6 months | £600–£700/day (Inside IR35) We're looking for a Senior AWS Platform Engineer to play a hands-on role in a major API infrastructure migration project. You’ll lead the transformation from a legacy EC2 setup to a modern, containerised architecture with Kong Gateway, working closely with SREs, architects, and platform teams. * AWS (ECS, IAM, networking, core services) * Terraform (IaC) * GitLab CI/CD * Kong API Gateway (hybrid model) * Datadog (observability) * Jira, Confluence * 7+ years in DevOps/Platform Engineering * Deep, hands-on AWS experience (ideally recent) * Proven skills in Terraform + GitLab pipelines * Experience migrating from EC2 to ECS/containerised environments * Strong understanding of API gateways (Kong)
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        NEWFEATURED
        Our client, a leading global organization, is partnering with a prestigious end client based in London. Were excited to offer an outstanding opportunity for aLead SAP Analytics Cloud Consultantto join a dynamic team on an initial 6-month contract. If you are interested and have the relevant skills and experience, please apply promptly to discuss further. Job Title: Lead SAP Analytics Cloud (SAC) Consultant Location: Hybrid London (Canada Square or Watford), 3 days/week onsite Type: Contract (6 months) Rate: £590/day Inside IR35 Availability: On-call for P1 incidents (365 days); travel as necessary About the Role We are seeking a highly experienced and strategic Lead SAP Analytics Cloud (SAC) Consultant to oversee the design, integration, and delivery of enterprise-grade analytics solutions.
        Our client, a leading global organization, is partnering with a prestigious end client based in London. Were excited to offer an outstanding opportunity for aLead SAP Analytics Cloud Consultantto join a dynamic team on an initial 6-month contract. If you are interested and have the relevant skills and experience, please apply promptly to discuss further. Job Title: Lead SAP Analytics Cloud (SAC) Consultant Location: Hybrid London (Canada Square or Watford), 3 days/week onsite Type: Contract (6 months) Rate: £590/day Inside IR35 Availability: On-call for P1 incidents (365 days); travel as necessary About the Role We are seeking a highly experienced and strategic Lead SAP Analytics Cloud (SAC) Consultant to oversee the design, integration, and delivery of enterprise-grade analytics solutions.
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        We have a new requirement for a Dynamics Developer to work for a client of ours. - knowledge of Dynamics CE/CRM - Azure IAAS and PAAS - Familiarity with API driven architecture - Postgres SQl To be considered please submit an up-to-date CV LA International is a HMG approved ICT Recruitment and Project Solutions Consultancy, operating globally from the largest single site in the UK as an IT Consultancy or as an Employment Business & Agency depending upon the precise nature of the work, for security cleared jobs or non-clearance vacancies, LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds.
        We have a new requirement for a Dynamics Developer to work for a client of ours. - knowledge of Dynamics CE/CRM - Azure IAAS and PAAS - Familiarity with API driven architecture - Postgres SQl To be considered please submit an up-to-date CV LA International is a HMG approved ICT Recruitment and Project Solutions Consultancy, operating globally from the largest single site in the UK as an IT Consultancy or as an Employment Business & Agency depending upon the precise nature of the work, for security cleared jobs or non-clearance vacancies, LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds.
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        NEW

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        What is the average salary for API in Essex?

        Average salary per year
        £47,499

        The average salary for a API in Essex is £47,499. API in Essex salaries range from £37,499 to £47,499.

        Frequently Asked Questions

        How many part time API jobs are there in Essex?
        There are 16 part time API jobs within 20 miles of Essex available on Jobsite right now.

        What other similar jobs are there to part time API jobs in Essex?
        As well as part time API jobs in Essex, you can find part time IT, Software Development, Consulting, amongst many others.