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Api
Milton Keynes
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Contract Developer - Node.js development, REST API design, and SIP-based communications * Duration: 3 months (Outside IR35) * Location: Bracknell / Hybrid Contract Developer with deep expertise in Node.js development, REST API design, and SIP-based communications. This role is crucial for supporting the migration of legacy device management, call control, and configuration workflows to a secure, scalable cloud environment. * Cloud Migration & Refactoring: Analyse existing applications to identify dependencies on on-prem infrastructure and design cloud-native solutions. Refactor services to enhance scalability and reliability in the cloud. * Service & API Development: Develop and maintain secure REST APIs for functionalities such as SIP authentication, call control, and real-time data interactions.
Contract Developer - Node.js development, REST API design, and SIP-based communications * Duration: 3 months (Outside IR35) * Location: Bracknell / Hybrid Contract Developer with deep expertise in Node.js development, REST API design, and SIP-based communications. This role is crucial for supporting the migration of legacy device management, call control, and configuration workflows to a secure, scalable cloud environment. * Cloud Migration & Refactoring: Analyse existing applications to identify dependencies on on-prem infrastructure and design cloud-native solutions. Refactor services to enhance scalability and reliability in the cloud. * Service & API Development: Develop and maintain secure REST APIs for functionalities such as SIP authentication, call control, and real-time data interactions.
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JavaScript React Developer London (Hybrid) 6 month contract Rates: Negotiable Overview We are seeking an experienced Software Engineer to join a global technology team within a leading energy trading business. This role is suited to a developer with strong front-end expertise, solid cloud experience, and a track record of delivering business-critical applications in fast-paced environments. The ideal candidate will have excellent problem-solving skills, a user-focused mindset, and the ability to thrive in Agile delivery teams. Key Responsibilities * Design and build modern web applications using React, TypeScript, CSS, Jest/Vitest, Webpack, and Ag Grid. * Apply modern JavaScript coding, testing, debugging, and automation techniques. * Contribute to the creation and optimisation of CI/CD pipelines and deployment practices.
JavaScript React Developer London (Hybrid) 6 month contract Rates: Negotiable Overview We are seeking an experienced Software Engineer to join a global technology team within a leading energy trading business. This role is suited to a developer with strong front-end expertise, solid cloud experience, and a track record of delivering business-critical applications in fast-paced environments. The ideal candidate will have excellent problem-solving skills, a user-focused mindset, and the ability to thrive in Agile delivery teams. Key Responsibilities * Design and build modern web applications using React, TypeScript, CSS, Jest/Vitest, Webpack, and Ag Grid. * Apply modern JavaScript coding, testing, debugging, and automation techniques. * Contribute to the creation and optimisation of CI/CD pipelines and deployment practices.
2025-09-09T00:00:00.000Z Uxbridge Want a 3D Career? Join Norgine. At Norgine, our colleagues Dare themselves to be different and try new things, Drive to achieve their goals and beyond, and Develop themselves and their community. We call it the 3D career at Norgine and it offers you a fully-rounded experience with no limits. Bring everything about yourself that you're proud of, whether that's your passion for making a difference, focus on others' well-being, or intellectual curiosity to unleash in a fast-paced environment and supportive community. In return, get a sense of belonging, a long-term career with ongoing development and upskilling, and a company that cares about people's wellness as much as you do. Norgine: Transforming Healthcare, Backed by Over a Century of Expertise. We have an exciting opportunity for an Enterprise Architect to join Norgine.
2025-09-09T00:00:00.000Z Uxbridge Want a 3D Career? Join Norgine. At Norgine, our colleagues Dare themselves to be different and try new things, Drive to achieve their goals and beyond, and Develop themselves and their community. We call it the 3D career at Norgine and it offers you a fully-rounded experience with no limits. Bring everything about yourself that you're proud of, whether that's your passion for making a difference, focus on others' well-being, or intellectual curiosity to unleash in a fast-paced environment and supportive community. In return, get a sense of belonging, a long-term career with ongoing development and upskilling, and a company that cares about people's wellness as much as you do. Norgine: Transforming Healthcare, Backed by Over a Century of Expertise. We have an exciting opportunity for an Enterprise Architect to join Norgine.
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Job Title: Full Stack Developer Location: Hybrid with travel to London and Bristol Duration: 6 Months Rate: £650 per day - PAYE via Umbrella only Clearance: Active MOD SC clearance is necessary for this role. Job Description * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript * Develop back-end services: Build and maintain server-side logic, databases, and APIs using Spring and Java
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Senior Backend Engineer
Senior Backend Engineer
Innovate Recruitment Ltd
EC1N, City of London
Up to £95,000 per annum Benefits, Bonus, Share scheme
Onsite: Tuesday, Wednesday, Thursday £80k-£95k DoE. Our client is looking for an experienced Senior Backend Engineer with strong Golang expertise to help shape the systems, processes, and architecture driving their mission. If youre a hands-on problem solver who thrives in fast-paced, collaborative environments, this is a chance to work on impactful projects while accelerating your career in a growing company. The Role Youll be part of a cross-functional squad, delivering new features and capabilities that the business depends on. The backend is built in Go, following a documentation-first approach and a service-oriented architecture. High code quality, automated testing, and seamless deployments through CI/CD pipelines into AWS are core to the way they work. What Youll Be Doing Build & Deliver * Write clean, testable, maintainable Go code
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Senior Full Stack Engineer
Senior Full Stack Engineer
REVYBE IT RECRUITMENT LIMITED
EC1, City of London
From £100,000 to £120,000 per annum + Shares
London AI Start-up Up to £120,000 + Shares + Private Healthcare + Pension Were working with a well-funded AI start-up in London thats gearing up for huge growth. Theyre expecting to scale 10x over the next 18 months. Theyre now looking for a Senior Full-Stack Engineer to help design and build the next generation of their AI-driven platform. Reporting directly into the CTO and collaborating closely with product and research teams, this is a unique chance to take ownership across the stack and make a lasting impact in a company at the forefront of applied AI. The role This isnt your standard engineering role youll be working end-to-end across frontend, backend, and cloud infrastructure. Youll build sleek, scalable applications with React and Next.js, design and maintain robust APIs with Node.js and Python, and architect solutions deployed on AWS or GCP.
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Senior Backend Engineer Python/Django | Climate Tech Scale-Up | Central London c.£85-95k Ready to make real impact with your code? This climate-tech scale-up is going through the gears, backed by world-class investors, and heading towards a big future. Theyve built a platform already trusted by global enterprise brands and now the engineering team is growing fast to take things to the next level. Youll join as a Senior Backend Engineer, taking ownership of complex Python/Django services that power enterprise decarbonisation. Expect to design elegant APIs, tackle data-heavy challenges, and collaborate closely with sustainability experts and product teams. What makes this special? * High-performance engineering team smart, passionate, and collaborative * Big mission accelerating how the worlds largest businesses understand and reduce carbon footprints
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*candidates must hold an active SC Clearance* Start: ASAP Duration: 6 months+ Location: 3 days per week in London Pay: negotiable DoE, INSIDE IR35 We are seeking a talented Full Stack Engineer with strong experience in AWS and Python to join our growing team. You'll play a key role in designing, developing, and deploying robust applications that power our business and delight our users. Responsibilities - Design, develop, and maintain scalable web applications using Python (Django, Flask, or FastAPI). - Architect and implement cloud-native solutions on AWS (EC2, Lambda, S3, RDS, etc.). - Build and integrate RESTful APIs and microservices. - Collaborate with front-end developers to deliver seamless user experiences (React, Vue, or Angular). - Ensure application security, performance, and reliability.
*candidates must hold an active SC Clearance* Start: ASAP Duration: 6 months+ Location: 3 days per week in London Pay: negotiable DoE, INSIDE IR35 We are seeking a talented Full Stack Engineer with strong experience in AWS and Python to join our growing team. You'll play a key role in designing, developing, and deploying robust applications that power our business and delight our users. Responsibilities - Design, develop, and maintain scalable web applications using Python (Django, Flask, or FastAPI). - Architect and implement cloud-native solutions on AWS (EC2, Lambda, S3, RDS, etc.). - Build and integrate RESTful APIs and microservices. - Collaborate with front-end developers to deliver seamless user experiences (React, Vue, or Angular). - Ensure application security, performance, and reliability.
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You will be heavily product focused and have a strong track record of demonstrating you are more than a coder and genuinely love the product build. * Strong experience of Python Development with Django Rest frameworks. * Expert with FastAPI andPostgres * Experience of refactoring monolithic systems. * Outstanding knowledge of MongoDB. * Worked on large scale codebases. * AWS Serverless experience. * Experience in scalable application design. * Proven ability to work well in a high growth tech SME. * Experience of pair-programming. * Work collaboratively and expertly as part of a team. The client is operating a 3 stage interview process and are looking to progress quickly. The business offer a superb benefits package alongside the remote working. Feedback will be provided on your CV from the client within a few days of having been submitted by Aimtech Recruitment.
You will be heavily product focused and have a strong track record of demonstrating you are more than a coder and genuinely love the product build. * Strong experience of Python Development with Django Rest frameworks. * Expert with FastAPI andPostgres * Experience of refactoring monolithic systems. * Outstanding knowledge of MongoDB. * Worked on large scale codebases. * AWS Serverless experience. * Experience in scalable application design. * Proven ability to work well in a high growth tech SME. * Experience of pair-programming. * Work collaboratively and expertly as part of a team. The client is operating a 3 stage interview process and are looking to progress quickly. The business offer a superb benefits package alongside the remote working. Feedback will be provided on your CV from the client within a few days of having been submitted by Aimtech Recruitment.
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Full Stack Developer - Active SC, Java, Spingboot, React
Full Stack Developer - Active SC, Java, Spingboot, React
Hays
London
£500.0 - £550.0 per day + Up to £550 per day (Inside IR35)
Up to £550 per day (Inside IR35) London / Remote 3 months initially My client is an instantly recognisable Consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Full Stack Developer, with Active Security Clearance (SC) * Expertise in a range of technologies, including Java (8, 11, 17+), Spring / Springboot, React / HTML * AWS Cloud Service experience * Working experience with MySQL * Technical hands on experience with Terraform / Kibana / Apache Camel * Linux in a containerised environment * Immediate availability If interested, with relevant experience, please apply with your latest CV ASAP. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers.
Up to £550 per day (Inside IR35) London / Remote 3 months initially My client is an instantly recognisable Consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Full Stack Developer, with Active Security Clearance (SC) * Expertise in a range of technologies, including Java (8, 11, 17+), Spring / Springboot, React / HTML * AWS Cloud Service experience * Working experience with MySQL * Technical hands on experience with Terraform / Kibana / Apache Camel * Linux in a containerised environment * Immediate availability If interested, with relevant experience, please apply with your latest CV ASAP. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers.
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6-month contract Outside IR35 - £475 per day Hybrid - 2 days a week in the London Office We are seeking a highly capable, hands-on .NET Contractor to deliver high-quality solutions at pace. You will work with a modern .NET codebase (≥ .NET 8.0), occasionally interpreting Java to support .NET implementations. This role suits someone who is delivery-focused, practical, and confident working across platforms. Key Responsibilities * Deliver clean, maintainable, and testable C#/.NET code to a high standard. * Quickly turn around features and tasks without compromising quality. * Interpret existing Java code where required. * Collaborate with SMEs and the Engineering Lead to align with scope and priorities. * Own tasks end-to-end, from requirements to production release, with minimal supervision. Skills & Experience
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Job Title: Senior Developer Location:Osterley, UK (Hybrid) Duration: 6 months-Extendable * Architect, develop, and maintain scalable TypeScript/Node.js services and GraphQL APIs. * Write resilient, maintainable code with a strong focus on automated testing (unit, integration, functional, end-to-end, visual regression, Lighthouse). * Collaborate on DevOps practices: CI/CD (Jenkins, Concourse), containerisation, Helm chart authoring, and Kubernetes deployments. * Work within a cross-functional Agile team, contributing to technical direction, code reviews, and process improvements. * Ensure code is performant, secure, observable, and aligned with best practices. * Mentor and support junior developers, fostering a culture of technical excellence. * Extensive experience with TypeScript and Node.js in production environments.
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Trafalgar Talent is recruiting for a progressive, subscription-based tech company thats enhancing how users interact with web platforms through secure, high-performance solutions. As a Senior React Developer, you'll be pivotal in architecting, building, and optimizing advanced web applications using React and TypeScript. You'll take on complex engineering challenges, influence architectural decisions, and contribute directly to the user experience. * Designing and implementing scalable front-end solutions using React, TypeScript, and modern tooling (e.g. Redux, Webpack, Jest). * Breaking down complex, ambiguous problems into clean, testable components. * Performance tuningboost UI responsiveness, decrease load times, and streamline data management. * Selecting and integrating third-party tools and libraries wisely, balancing trade-offs effectively.
Trafalgar Talent is recruiting for a progressive, subscription-based tech company thats enhancing how users interact with web platforms through secure, high-performance solutions. As a Senior React Developer, you'll be pivotal in architecting, building, and optimizing advanced web applications using React and TypeScript. You'll take on complex engineering challenges, influence architectural decisions, and contribute directly to the user experience. * Designing and implementing scalable front-end solutions using React, TypeScript, and modern tooling (e.g. Redux, Webpack, Jest). * Breaking down complex, ambiguous problems into clean, testable components. * Performance tuningboost UI responsiveness, decrease load times, and streamline data management. * Selecting and integrating third-party tools and libraries wisely, balancing trade-offs effectively.
I am currently working with a London-based financial services consultancy who are actively seeking multiple Senior Python Developers to join one of their prestigious end clients in the Investment Banking space. * Extensive Python Development experience in Financial Services/Investment Banking - Mandatory. * Strong experience with relational databases. * Extensive AWS experience. * Good experience with data modelling. * Strong experience with Spark. * Up to £800pd in-scope via Umbrella. * Initial 6-month contract with extensions. * London-based hybrid working. If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
I am currently working with a London-based financial services consultancy who are actively seeking multiple Senior Python Developers to join one of their prestigious end clients in the Investment Banking space. * Extensive Python Development experience in Financial Services/Investment Banking - Mandatory. * Strong experience with relational databases. * Extensive AWS experience. * Good experience with data modelling. * Strong experience with Spark. * Up to £800pd in-scope via Umbrella. * Initial 6-month contract with extensions. * London-based hybrid working. If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
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AMS is a global workforce solutions partner committed to creating inclusive, dynamic, and future-ready workplaces. We help organisations adapt, grow, and thrive in an ever-evolving world by building, shaping, and optimising diverse talent strategies. Our Contingent Workforce Solutions (CWS) is one of our service offerings. Acting as an extension of their recruitment teams, we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking.
AMS is a global workforce solutions partner committed to creating inclusive, dynamic, and future-ready workplaces. We help organisations adapt, grow, and thrive in an ever-evolving world by building, shaping, and optimising diverse talent strategies. Our Contingent Workforce Solutions (CWS) is one of our service offerings. Acting as an extension of their recruitment teams, we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking.
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Backend Engineer - Scale Systems with Real Impact ?? Tired of tinkering at the edges? Want to actually shape the backbone of a platform that's transforming how the world's biggest enterprises run their tech? This is one of those rare roles where you get in early, build the foundations, and watch your work scale across global businesses. We're working with a high-growth London startup on a mission to reinvent enterprise software. Their AI-driven platform is already saving household-name customers millions in IT costs, shaving months off ERP project timelines, and making sense of the mess that legacy systems leave behind. SAP is just the beginning - they're building a whole new category of Enterprise System Intelligence. The Role * Build core systems capable of handling tens of millions of lines of code and large-scale LLM workloads.
Backend Engineer - Scale Systems with Real Impact ?? Tired of tinkering at the edges? Want to actually shape the backbone of a platform that's transforming how the world's biggest enterprises run their tech? This is one of those rare roles where you get in early, build the foundations, and watch your work scale across global businesses. We're working with a high-growth London startup on a mission to reinvent enterprise software. Their AI-driven platform is already saving household-name customers millions in IT costs, shaving months off ERP project timelines, and making sense of the mess that legacy systems leave behind. SAP is just the beginning - they're building a whole new category of Enterprise System Intelligence. The Role * Build core systems capable of handling tens of millions of lines of code and large-scale LLM workloads.
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GraphQL Specialist – TypeScript | Cloud-Native | Contract (Outside)
GraphQL Specialist – TypeScript | Cloud-Native | Contract (Outside)
Staffworx Limited
Heathrow, TW5
market rates, outside IR35
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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This is a hands on, Technical Lead level role. The technical focus is 'full stack' working with C# and Angular 17. The Senior / Lead Software Developer will be responsible for * Full stack development with C# and Angular 17 as part of the ongoing evolution of the company's core SaaS product * Driving the product development in conjunction with the wider team and business * Mentoring and upskilling less experienced developers in the team - specifically on Angular * Taking the lead on architectural and design decisions Key experience * Extensive C# experience * .NET Core * Angular - ideally Angular 17, but any recent version would suffice * Azure DevOps * Agile * Technical leadership * Involvement in driving the evolution of SaaS products If you are seeking a role of this nature please get in touch for more information.
This is a hands on, Technical Lead level role. The technical focus is 'full stack' working with C# and Angular 17. The Senior / Lead Software Developer will be responsible for * Full stack development with C# and Angular 17 as part of the ongoing evolution of the company's core SaaS product * Driving the product development in conjunction with the wider team and business * Mentoring and upskilling less experienced developers in the team - specifically on Angular * Taking the lead on architectural and design decisions Key experience * Extensive C# experience * .NET Core * Angular - ideally Angular 17, but any recent version would suffice * Azure DevOps * Agile * Technical leadership * Involvement in driving the evolution of SaaS products If you are seeking a role of this nature please get in touch for more information.
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