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Full Stack .NET Developer - Azure - Cardiff
Full Stack .NET Developer - Azure - Cardiff
Circle Group
CF1, Cardiff
£40000 - £50000 per annum + + Benefits
Full Stack C# .NET Developer with experience in both back-end C# .NET / .NET Core development and front-end JavaScript development (Vue.js / Angular / React, etc) is required by a leading company in Cardiff. You should also have some development experience in the Cloud with Azure & third-party API integrations This role is an initial 12-month FTC, but chance for the role to go permanent later down the line. There is some excellent investment in AI technologies, so a chance to work on some cutting-edge software development projects in AI advancement. * Full-stack development experience in both C#.NET and JavaScript (Vue.js / Angular / React etc) with a passion for embracing new front-end technologies. * Azure experience with a good appreciation of Azure Functions, Storage Accounts, Service Bus, Application Insights, and Key Vault
Full Stack C# .NET Developer with experience in both back-end C# .NET / .NET Core development and front-end JavaScript development (Vue.js / Angular / React, etc) is required by a leading company in Cardiff. You should also have some development experience in the Cloud with Azure & third-party API integrations This role is an initial 12-month FTC, but chance for the role to go permanent later down the line. There is some excellent investment in AI technologies, so a chance to work on some cutting-edge software development projects in AI advancement. * Full-stack development experience in both C#.NET and JavaScript (Vue.js / Angular / React etc) with a passion for embracing new front-end technologies. * Azure experience with a good appreciation of Azure Functions, Storage Accounts, Service Bus, Application Insights, and Key Vault
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NEW Job Opportunity - Senior Integrity Engineer - 12 Month PAYE Contract Location: Wytch Farm Oilfield, near Corfe Castle, Wareham, Dorset Job Title: Senior Integrity Engineer Contract Type: Initial 12-month contract (potential for extension) Role Overview We are seeking a Senior Integrity Engineer to join our team at the Wytch Farm oilfield. This role carries responsibility for senior-level mechanical engineering duties related to static equipment integrity. You will ensure that integrity risks are transparently managed to the lowest reasonably practicable level while upholding regulatory compliance with PSSR, PSR, and COMAH. The role requires close collaboration with internal and external stakeholders. Key Responsibilities Safety Ownership * Apply the nine Perenco Life Saving Rules to protect self and others.
NEW Job Opportunity - Senior Integrity Engineer - 12 Month PAYE Contract Location: Wytch Farm Oilfield, near Corfe Castle, Wareham, Dorset Job Title: Senior Integrity Engineer Contract Type: Initial 12-month contract (potential for extension) Role Overview We are seeking a Senior Integrity Engineer to join our team at the Wytch Farm oilfield. This role carries responsibility for senior-level mechanical engineering duties related to static equipment integrity. You will ensure that integrity risks are transparently managed to the lowest reasonably practicable level while upholding regulatory compliance with PSSR, PSR, and COMAH. The role requires close collaboration with internal and external stakeholders. Key Responsibilities Safety Ownership * Apply the nine Perenco Life Saving Rules to protect self and others.
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Job Title: API Developer Location: Remote Contract Length: 3 months Start Date: ASAP iO Associates are working with an exciting UK Based Defence company that blends strategic modelling, specialist analytics, and operational insight to simplify complex challenges and empower decisive thinking. They are looking for an API Developer to join the team for 3 months to support one of their existing contracts. This is a great opportunity for someone who is looking to join a dynamic team where you'll build integrations that transform complex data into actionable insights, all within a culture that values autonomy and innovation. * Requirements Analysis: Employ structured methods to capture and assess technical requirements. * API Development: Design and implement secure, scalable APIs using Python or Java. * System Integration: Integrate third-party services and data sources.
Job Title: API Developer Location: Remote Contract Length: 3 months Start Date: ASAP iO Associates are working with an exciting UK Based Defence company that blends strategic modelling, specialist analytics, and operational insight to simplify complex challenges and empower decisive thinking. They are looking for an API Developer to join the team for 3 months to support one of their existing contracts. This is a great opportunity for someone who is looking to join a dynamic team where you'll build integrations that transform complex data into actionable insights, all within a culture that values autonomy and innovation. * Requirements Analysis: Employ structured methods to capture and assess technical requirements. * API Development: Design and implement secure, scalable APIs using Python or Java. * System Integration: Integrate third-party services and data sources.
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WebMethods Integration Developer - Must have an Active SC Clearance - Remote We are looking for WebMethods Developers to join a growing integration team working on a large-scale enterprise platform programme. The project has significant growth planned, with multiple contractor roles opening this quarter and the next, starting with one junior hire. If you are an experienced integration specialist with Active SC clearance, we are keen to hear from you. * Designing and developing new integrations using WebMethods * Supporting the full lifecycle of integrations from technical design to development and testing * Working across a range of internal and third-party systems * Collaborating with architects and other developers to ensure robust, secure integration solutions * Strong experience with WebMethods Integration Server * Experience with API design and integration
WebMethods Integration Developer - Must have an Active SC Clearance - Remote We are looking for WebMethods Developers to join a growing integration team working on a large-scale enterprise platform programme. The project has significant growth planned, with multiple contractor roles opening this quarter and the next, starting with one junior hire. If you are an experienced integration specialist with Active SC clearance, we are keen to hear from you. * Designing and developing new integrations using WebMethods * Supporting the full lifecycle of integrations from technical design to development and testing * Working across a range of internal and third-party systems * Collaborating with architects and other developers to ensure robust, secure integration solutions * Strong experience with WebMethods Integration Server * Experience with API design and integration
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Outside IR35 | £500/day | Remote UK | 6 months+ Bright Purple are partnering with a global client to hire aPlatform Engineerfor a high-impact infrastructure improvement programme. Youll help assess and align an AWS platform with internal policies, and lead a criticalCI/CD migration from Azure DevOps to GitHub Actions. * Conduct platform risk assessment: IAM, SSL expiry, EC2 security groups, backups, monitoring * Improve availability acrossRDS, EC2, Lambda, CloudFront, API Gateway * Migrate CI/CD pipelines to GitHub Actions * Support applications into tools likeSentry, Dependency Track, Bug Bounty, DAST * Define cross-region DR plans using Terraform CDK * Collaborate with dev teams on Java-based apps and AWS operational support * Triage infrastructure alerts and contribute to platform reliability?
Outside IR35 | £500/day | Remote UK | 6 months+ Bright Purple are partnering with a global client to hire aPlatform Engineerfor a high-impact infrastructure improvement programme. Youll help assess and align an AWS platform with internal policies, and lead a criticalCI/CD migration from Azure DevOps to GitHub Actions. * Conduct platform risk assessment: IAM, SSL expiry, EC2 security groups, backups, monitoring * Improve availability acrossRDS, EC2, Lambda, CloudFront, API Gateway * Migrate CI/CD pipelines to GitHub Actions * Support applications into tools likeSentry, Dependency Track, Bug Bounty, DAST * Define cross-region DR plans using Terraform CDK * Collaborate with dev teams on Java-based apps and AWS operational support * Triage infrastructure alerts and contribute to platform reliability?
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We're seeking a Lead QA Analyst to drive and scale quality assurance across multiple squads delivering Low-Code/No-Code solutions, with a primary focus on Microsoft Power Platform and Azure-integrated applications. You will define test strategy, lead governance to build reusable testing capabilities across multiple teams . This is a pivotal role in embedding scalable, sustainable quality into rapid solution delivery. Define and own test strategy, test planning and risk mitigation across multiple squads Collaborate with squad teams to ensure acceptance criteria are clear and testable Communicate quality risks, release readiness, and report defects and readiness to stakeholders Coordinate with Senior QAT during various stages of testing cycle and oversee test coverage during testing life cycle 8+ years in software testing roles with at least 3 years in a lead role
We're seeking a Lead QA Analyst to drive and scale quality assurance across multiple squads delivering Low-Code/No-Code solutions, with a primary focus on Microsoft Power Platform and Azure-integrated applications. You will define test strategy, lead governance to build reusable testing capabilities across multiple teams . This is a pivotal role in embedding scalable, sustainable quality into rapid solution delivery. Define and own test strategy, test planning and risk mitigation across multiple squads Collaborate with squad teams to ensure acceptance criteria are clear and testable Communicate quality risks, release readiness, and report defects and readiness to stakeholders Coordinate with Senior QAT during various stages of testing cycle and oversee test coverage during testing life cycle 8+ years in software testing roles with at least 3 years in a lead role
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A Webmethods Developer is required who is a British National and eligible for SC clearance, for an initial 6 month contract. This role is remote with any travel to site fully expensed and is inside IR35 so will require working via an FCSA accredited umbrella company. *Experienced WebMethods developer *Axway API gateway experience. *Experience of technical design, dev and testing support for new integrations across a range of systems. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take up to a minimum 10 weeks.
A Webmethods Developer is required who is a British National and eligible for SC clearance, for an initial 6 month contract. This role is remote with any travel to site fully expensed and is inside IR35 so will require working via an FCSA accredited umbrella company. *Experienced WebMethods developer *Axway API gateway experience. *Experience of technical design, dev and testing support for new integrations across a range of systems. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take up to a minimum 10 weeks.
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Location: Remote (Occasional visits to Warrington) Contract: Inside IR35 Day rate: £550 per day Duration: 6 months+ Start date: ASAP however will consider candidates on a notice period. Clearence: Eligible for Security Clearance (sole UK nationals) but can start on a BPSS We have a fantastic opportunity for an Engineer with a strong background in Bentley Projectwise platforms. The Client is a Global Consultancy whom specialising in providing engineering, technical, professional and construction solutions. This role will support infrastructure readiness, data governance, and automation across project planning and engineering document management systems. The ideal candidate will bridge project controls with engineering systems to drive consistency, reliability, and cross-system optimization. Key Responsibilities:?
Location: Remote (Occasional visits to Warrington) Contract: Inside IR35 Day rate: £550 per day Duration: 6 months+ Start date: ASAP however will consider candidates on a notice period. Clearence: Eligible for Security Clearance (sole UK nationals) but can start on a BPSS We have a fantastic opportunity for an Engineer with a strong background in Bentley Projectwise platforms. The Client is a Global Consultancy whom specialising in providing engineering, technical, professional and construction solutions. This role will support infrastructure readiness, data governance, and automation across project planning and engineering document management systems. The ideal candidate will bridge project controls with engineering systems to drive consistency, reliability, and cross-system optimization. Key Responsibilities:?
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A cryptography and PKI Expert is required for an initial 6 month contract. this is a hybrid role with some on site in London and is inside IR35 so will require working via an FCSA accredited umbrella company. *5+ years in applied cryptography, PKI operations, or cryptographic engineering roles *Expert-level knowledge of symmetric and asymmetric algorithms (AES, RSA, ECC, EdDSA, SHA-2/3, HKDF, HMAC) *Experience designing and maintaining scalable PKI architectures (MS ADCS, EJBCA, Venafi, HashiCorp Vault, or similar) *Deep understanding of TLS/SSL, certificate pinning, mutual TLS (mTLS), and secure session negotiation *Proficiency with HSMs and key lifecycle tools (e.g., Thales, AWS CloudHSM, Azure HSM, Utimaco) *Hands-on with certificate automation protocols (ACME, EST), and tools like Certbot, Smallstep, or Vault PKI
A cryptography and PKI Expert is required for an initial 6 month contract. this is a hybrid role with some on site in London and is inside IR35 so will require working via an FCSA accredited umbrella company. *5+ years in applied cryptography, PKI operations, or cryptographic engineering roles *Expert-level knowledge of symmetric and asymmetric algorithms (AES, RSA, ECC, EdDSA, SHA-2/3, HKDF, HMAC) *Experience designing and maintaining scalable PKI architectures (MS ADCS, EJBCA, Venafi, HashiCorp Vault, or similar) *Deep understanding of TLS/SSL, certificate pinning, mutual TLS (mTLS), and secure session negotiation *Proficiency with HSMs and key lifecycle tools (e.g., Thales, AWS CloudHSM, Azure HSM, Utimaco) *Hands-on with certificate automation protocols (ACME, EST), and tools like Certbot, Smallstep, or Vault PKI
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Job Description: Junior Frontend Developer ABOUT US Newline Auction Software has been a trusted provider of auction management software for over 40 years, serving leading livestock firms in the UK, Ireland, Canada, and New Zealand. Our solutions streamline live sales, reduce paperwork, and automate administrationbringing speed, accuracy, and efficiency to the auction ring. With a renewed focus on innovation and product development, were growing our R&D team and investing in the future. Were looking for curious, capable people who are excited by practical software challenges and ready to make an impact. Were looking for a motivated and enthusiastic Junior Frontend Developer to join our growing R&D team during an exciting period of transformation and product development.
Job Description: Junior Frontend Developer ABOUT US Newline Auction Software has been a trusted provider of auction management software for over 40 years, serving leading livestock firms in the UK, Ireland, Canada, and New Zealand. Our solutions streamline live sales, reduce paperwork, and automate administrationbringing speed, accuracy, and efficiency to the auction ring. With a renewed focus on innovation and product development, were growing our R&D team and investing in the future. Were looking for curious, capable people who are excited by practical software challenges and ready to make an impact. Were looking for a motivated and enthusiastic Junior Frontend Developer to join our growing R&D team during an exciting period of transformation and product development.
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As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasnt changed were here to stop breaches, and weve redefined modern security with the worlds most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. Were also a mission-driven company. We cultivate a culture that gives every CrowdStriker both the flexibility and autonomy to own their careers.
As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasnt changed were here to stop breaches, and weve redefined modern security with the worlds most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. Were also a mission-driven company. We cultivate a culture that gives every CrowdStriker both the flexibility and autonomy to own their careers.
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Key Information Salary: £48,925 - £59,225, depending on experience Duration of Contract : 15 months Hours per week : 35 hours per week (Full time) Location: Sutton/Chelsea. This role is eligible for hybrid working Closing Date: 24 August 2025 Job Details About the Role We are seeking a Oracle Fusion Test Analyst to join our Stratus QA/Test Team and contribute to various aspects of testing activities including test planning, designing, execution, documenting and reporting outcomes to ensure successful delivery of Stratus Oracle Fusion Applications. The modules we are implementing includes (Finance, HCM, Procurement, EPM, etc.) which will enable ICR to run their business successfully at Go-Live.
Key Information Salary: £48,925 - £59,225, depending on experience Duration of Contract : 15 months Hours per week : 35 hours per week (Full time) Location: Sutton/Chelsea. This role is eligible for hybrid working Closing Date: 24 August 2025 Job Details About the Role We are seeking a Oracle Fusion Test Analyst to join our Stratus QA/Test Team and contribute to various aspects of testing activities including test planning, designing, execution, documenting and reporting outcomes to ensure successful delivery of Stratus Oracle Fusion Applications. The modules we are implementing includes (Finance, HCM, Procurement, EPM, etc.) which will enable ICR to run their business successfully at Go-Live.
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Role & Responsibilities Role Overview As a Junior Backend Engineer at Grabyo; you will have exposure to the backend APIs and services that power the core of the Grabyo Platform. Some days, you might be part of the team behind key features like building markers in the Live clipping or AI-powered highlights workflows. Other days, you could contribute to evolving our architecture as we advance towards a scalable, microservices-based platform. Java, Spring, Go, Node.js, NoSQL, serverless architectures, microservices, Terraform, AWS SAM, DynamoDB, media processing, Terraform, AWS Lambda these are a few of the state-of-the-art techs you will be working with To make sure you keep growing your knowledge around tech, we provide you with professional development opportunities like Hackathons, development budget and pair programming days to improve our automated testing culture.
Role & Responsibilities Role Overview As a Junior Backend Engineer at Grabyo; you will have exposure to the backend APIs and services that power the core of the Grabyo Platform. Some days, you might be part of the team behind key features like building markers in the Live clipping or AI-powered highlights workflows. Other days, you could contribute to evolving our architecture as we advance towards a scalable, microservices-based platform. Java, Spring, Go, Node.js, NoSQL, serverless architectures, microservices, Terraform, AWS SAM, DynamoDB, media processing, Terraform, AWS Lambda these are a few of the state-of-the-art techs you will be working with To make sure you keep growing your knowledge around tech, we provide you with professional development opportunities like Hackathons, development budget and pair programming days to improve our automated testing culture.
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Tech Soft 3D, the global leader in 3D software development toolkits , is seeking a HubSpot Systems Manager. As a HubSpot Systems Manager , you will support and enhance our use of HubSpot across both Sales and Marketing teams. As a software company with B2B and B2C operations, we rely on HubSpot to drive automation , CRM integrity , and integrated customer engagement . This role will own the technical configuration of HubSpot and ensure seamless alignment between systems, processes, and users. The role often involves strategic planning, training, and ongoing support to help our teams achieve their business goals through HubSpot. The role will connect with a diverse group of individuals and will build positive business relationships by providing regular project status updates.
Tech Soft 3D, the global leader in 3D software development toolkits , is seeking a HubSpot Systems Manager. As a HubSpot Systems Manager , you will support and enhance our use of HubSpot across both Sales and Marketing teams. As a software company with B2B and B2C operations, we rely on HubSpot to drive automation , CRM integrity , and integrated customer engagement . This role will own the technical configuration of HubSpot and ensure seamless alignment between systems, processes, and users. The role often involves strategic planning, training, and ongoing support to help our teams achieve their business goals through HubSpot. The role will connect with a diverse group of individuals and will build positive business relationships by providing regular project status updates.
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Company Description At Frasers Group were rethinking retail. Through digital innovation and unique store experiences, were serving our consumers with the worlds best sports, premium and luxury brands globally. As a leader in the industry, were elevating the retail experience for our consumers through our collection of established brands, including Sports Direct, FLANNELS, USC, Frasers, and GAME. Why join us? Our vision - we are building the worlds most admired and compelling brand ecosystem Our purpose we are elevating the lives of the many with access to the worlds best brands and experiences At Frasers Group, we fear less and do more. Our people are forward thinkers who are driven to operate outside of their comfort zone to change the future of retail, embracing challenges along the way. The potential to elevate your career is massive, the experience unrivalled.
Company Description At Frasers Group were rethinking retail. Through digital innovation and unique store experiences, were serving our consumers with the worlds best sports, premium and luxury brands globally. As a leader in the industry, were elevating the retail experience for our consumers through our collection of established brands, including Sports Direct, FLANNELS, USC, Frasers, and GAME. Why join us? Our vision - we are building the worlds most admired and compelling brand ecosystem Our purpose we are elevating the lives of the many with access to the worlds best brands and experiences At Frasers Group, we fear less and do more. Our people are forward thinkers who are driven to operate outside of their comfort zone to change the future of retail, embracing challenges along the way. The potential to elevate your career is massive, the experience unrivalled.
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Simpson Associates transforms raw data into actionable insights that drive positive change. Our Microsoft data expertise, our specialist sector knowledge, plus our innovative and trusted advice and guidance are just some of the reasons clients choose to work with us. Our mission is to help purpose-led organisations from within the public and private sectors to harness data as a lever for change and enable them to realise business value more quickly. We provide the full range of services to support organisations on their data transformation journey. From advisory support and data strategy, to developing Data & AI solutions, right through to providing a range of managed services.
Simpson Associates transforms raw data into actionable insights that drive positive change. Our Microsoft data expertise, our specialist sector knowledge, plus our innovative and trusted advice and guidance are just some of the reasons clients choose to work with us. Our mission is to help purpose-led organisations from within the public and private sectors to harness data as a lever for change and enable them to realise business value more quickly. We provide the full range of services to support organisations on their data transformation journey. From advisory support and data strategy, to developing Data & AI solutions, right through to providing a range of managed services.
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The Senior Backend Engineer is responsible for building and maintaining the server-side systems that power DRESTs luxury mobile game and supporting platform. This role plays a critical part in the performance, reliability, and scalability of our backend architecture, ensuring smooth operation of our live services and enabling feature delivery across the organisation. As a hands-on contributor, the Senior Backend Engineer designs, implements, and optimises backend services, collaborating closely with client, DevOps, and data teams. Reporting to the Lead Backend Engineer, you will also support technical planning and mentor other engineers, helping to shape the future of backend engineering at DREST. What you will be accountable for
The Senior Backend Engineer is responsible for building and maintaining the server-side systems that power DRESTs luxury mobile game and supporting platform. This role plays a critical part in the performance, reliability, and scalability of our backend architecture, ensuring smooth operation of our live services and enabling feature delivery across the organisation. As a hands-on contributor, the Senior Backend Engineer designs, implements, and optimises backend services, collaborating closely with client, DevOps, and data teams. Reporting to the Lead Backend Engineer, you will also support technical planning and mentor other engineers, helping to shape the future of backend engineering at DREST. What you will be accountable for
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Job Opportunity: Technical Product Manager Developer Experience Are you passionate about empowering developers and building seamless technical experiences? Do you thrive at the intersection of emerging AI capabilities and world-class platform design? Join us as a Technical Product Manager and help shape the future of developer experience in our AI-led transformation. About Us: Thomas is a global leader in the world of People science, and we are embarking on an exciting journey to become a cutting-edge, AI-powered product organization. As part of our transformation, we are reimagining our products and product experience to stay ahead in a dynamic and fast-evolving market. Our environment is challenging, fast-paced, and full of opportunities to make a real impact.
Job Opportunity: Technical Product Manager Developer Experience Are you passionate about empowering developers and building seamless technical experiences? Do you thrive at the intersection of emerging AI capabilities and world-class platform design? Join us as a Technical Product Manager and help shape the future of developer experience in our AI-led transformation. About Us: Thomas is a global leader in the world of People science, and we are embarking on an exciting journey to become a cutting-edge, AI-powered product organization. As part of our transformation, we are reimagining our products and product experience to stay ahead in a dynamic and fast-evolving market. Our environment is challenging, fast-paced, and full of opportunities to make a real impact.
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Contract Duration: Until 31 March 2026 (likely extension) Location: London - client site or supplier-managed low-side site for OGD DV holders Inside IR35: Rate TBC * MUST have Community DV or OGD DV (current/valid) * SFIA Level: 4-6 This position is for a high profile government client. As a Software Engineer, you'll design, develop, and maintain secure, scalable software systems. Your role will involve translating technical requirements into robust software, with strong security, compliance, and performance standards. * Design, develop, and iterate secure, scalable software applications * Integrate Palantir Foundry with existing products and services, both on-premise and in the cloud * Collaborate with stakeholders to refine requirements and deliver high-quality software * Ensure compliance with security and operational protocols
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Senior Backend Engineer London - Hybrid (1x day a week) Salary: Up to £80k DOE About Us Our client is a Insurtech Unicorn looking to expand their engineering team. With the opportunity to work on existing products which have generated millions in revenue to something new changing the landscape of the insurance world, this is the perfect opportunity for a results driven and growth focused Senior engineer looking to start an ambitious business. The Role We're looking for a Backend Engineer with strong Python skills and experience building scalable cloud-based microservices, ideally with FastAPI. You'll work in a cross-functional team delivering reliable, performant services that power our core insurance platform. What You'll Do * Design, build, and maintain Python microservices (FastAPI) in production * Own features end-to-end: design, build, test, deploy, monitor
Senior Backend Engineer London - Hybrid (1x day a week) Salary: Up to £80k DOE About Us Our client is a Insurtech Unicorn looking to expand their engineering team. With the opportunity to work on existing products which have generated millions in revenue to something new changing the landscape of the insurance world, this is the perfect opportunity for a results driven and growth focused Senior engineer looking to start an ambitious business. The Role We're looking for a Backend Engineer with strong Python skills and experience building scalable cloud-based microservices, ideally with FastAPI. You'll work in a cross-functional team delivering reliable, performant services that power our core insurance platform. What You'll Do * Design, build, and maintain Python microservices (FastAPI) in production * Own features end-to-end: design, build, test, deploy, monitor