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        5 Permanent API jobs in St James, South West London + 20 miles

        Integration Developer

        Develop
        City of London, London
        £55000.00 - £70000.00 per annum
        A strong emphasis is placed on creating scalable, testable integration pipelines with effective error management, high availability, and full lifecycle testing to ensure robust API interactions and telemetry tracking. o Integration and API testing * Develop and manage SQL Server databases used for API-driven integrations and data pipeline control * Produce clear and thorough documentation for integration flows, deployment configurations, testing processes, and operational support manuals * Create interactive dashboards to monitor API traffic and support reconciliation and business insight requirements
        A strong emphasis is placed on creating scalable, testable integration pipelines with effective error management, high availability, and full lifecycle testing to ensure robust API interactions and telemetry tracking. o Integration and API testing * Develop and manage SQL Server databases used for API-driven integrations and data pipeline control * Produce clear and thorough documentation for integration flows, deployment configurations, testing processes, and operational support manuals * Create interactive dashboards to monitor API traffic and support reconciliation and business insight requirements
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        NEW

        Non-Functional Testing Engineer

        McGregor Boyall Associates Limited
        E1, East London
        £75000 - £850000 per annum + + Additional Benefits
        I'm supporting a client of mine in their search for a Non-Functional Testing Specialist to help define, shape, and manage their Non-Functional test requirements. *Please note that although Performance Testing is part of the role, this is a full-fledged Non-Functional Test Engineer role, covering Performance, Disaster Recovery, Microservices, Resilience, Alerting, Security & Monitoring.* As a specialist in non-functional testing, you will play a key role in supporting Product Owners by helping to define, refine, and manage non-functional test requirements. Collaborating closely with technical experts and analysts, you will convert these requirements into a comprehensive test strategy. You will also be responsible for ensuring that planning, preparation, and execution of the tests are carried out effectively and on schedule, in close coordination with the Infrastructure
        I'm supporting a client of mine in their search for a Non-Functional Testing Specialist to help define, shape, and manage their Non-Functional test requirements. *Please note that although Performance Testing is part of the role, this is a full-fledged Non-Functional Test Engineer role, covering Performance, Disaster Recovery, Microservices, Resilience, Alerting, Security & Monitoring.* As a specialist in non-functional testing, you will play a key role in supporting Product Owners by helping to define, refine, and manage non-functional test requirements. Collaborating closely with technical experts and analysts, you will convert these requirements into a comprehensive test strategy. You will also be responsible for ensuring that planning, preparation, and execution of the tests are carried out effectively and on schedule, in close coordination with the Infrastructure
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        NEW
        Espire Infolabs is hiring for MS Power Platform Engineer for London, UK location. Job Title: MS Power Platform Engineer - Job Type: Permanent - Job Location: London (3 Days/week onsite) We are seeking a skilled Power Platform Engineer with deep insurance industry expertise to design, develop, and implement automation solutions using Microsoft Power Platform technologies. The successful candidate will serve as a technical expert in Power Automate and broader Power Platform capabilities while effectively managing stakeholder relationships and driving digital transformation initiatives within the insurance and re-insurance domain. Key Responsibilities - Technical Development * Design and develop complex automation workflows using Power Automate (formerly Microsoft Flow) * Microsoft Copilot Studio * Build custom applications using Power Apps to meet specific business requ
        Espire Infolabs is hiring for MS Power Platform Engineer for London, UK location. Job Title: MS Power Platform Engineer - Job Type: Permanent - Job Location: London (3 Days/week onsite) We are seeking a skilled Power Platform Engineer with deep insurance industry expertise to design, develop, and implement automation solutions using Microsoft Power Platform technologies. The successful candidate will serve as a technical expert in Power Automate and broader Power Platform capabilities while effectively managing stakeholder relationships and driving digital transformation initiatives within the insurance and re-insurance domain. Key Responsibilities - Technical Development * Design and develop complex automation workflows using Power Automate (formerly Microsoft Flow) * Microsoft Copilot Studio * Build custom applications using Power Apps to meet specific business requ
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        NEWFEATURED

        9 exact matches jobs are outside your preferred location

        Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
        Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
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        NEWFEATURED
        Deliver front-end excellence: Build fast, responsive web apps using Vite, React Query, Context API, and CSS frameworks. * Design for scale: Lead on API design, performance optimisation, and secure, cloud-ready architectures.
        Deliver front-end excellence: Build fast, responsive web apps using Vite, React Query, Context API, and CSS frameworks. * Design for scale: Lead on API design, performance optimisation, and secure, cloud-ready architectures.
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        NEW
        Deliver high-quality, responsive web and mobile apps, leveraging modern frameworks such as Vite, React Query, Context API, and CSS libraries.
        Deliver high-quality, responsive web and mobile apps, leveraging modern frameworks such as Vite, React Query, Context API, and CSS libraries.
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        NEW

        Lead Android Engineer

        Halian Technology Limited
        London
        From £82,000 to £92,000 per annum
        Halian Technology are searching for an Lead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
        Halian Technology are searching for an Lead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
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        NEW
        Title: Laboratory Systems Specialist - Location: Slough - Visa and Relocation support is offered with this role. Today, Lonza is a global leader in life sciences operating across five continents. While we work in science, theres no magic formula to how we do it. Our greatest scientific solution is talented people working together, devising ideas that help businesses to help people. In exchange, we let our people own their careers. Their ideas, big and small, genuinely improve the world. And thats the kind of work we want to be part of. The role of a Laboratory Systems Specialist is to lead the development and implementation of robust Lab/digital infrastructure within our R&D laboratories for the UK and US locations. This is pivotal in enabling efficient, automated data exchange between laboratory instruments and enterprise informatics systems such as Electronic Lab no
        Title: Laboratory Systems Specialist - Location: Slough - Visa and Relocation support is offered with this role. Today, Lonza is a global leader in life sciences operating across five continents. While we work in science, theres no magic formula to how we do it. Our greatest scientific solution is talented people working together, devising ideas that help businesses to help people. In exchange, we let our people own their careers. Their ideas, big and small, genuinely improve the world. And thats the kind of work we want to be part of. The role of a Laboratory Systems Specialist is to lead the development and implementation of robust Lab/digital infrastructure within our R&D laboratories for the UK and US locations. This is pivotal in enabling efficient, automated data exchange between laboratory instruments and enterprise informatics systems such as Electronic Lab no
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        NEW

        These jobs might also interest you

        This role requires a highly skilled, hands-on Lead Integration Engineer with significant experience in AWS, Python, and integration platforms. The successful candidate will provide both technical and thought leadership, driving integration initiatives in a complex and evolving environment. * Scope, design, and build integrations across third-party platforms leveraging AWS infrastructure * Collaborate with Data and Infrastructure teams to translate requirements into robust technical solutions that align with the overall integration architecture * Produce and maintain clear documentation of integration flows * Strong experience with RESTful API integrations * Proven understanding of integration ETL/ELT concepts - Contra
        This role requires a highly skilled, hands-on Lead Integration Engineer with significant experience in AWS, Python, and integration platforms. The successful candidate will provide both technical and thought leadership, driving integration initiatives in a complex and evolving environment. * Scope, design, and build integrations across third-party platforms leveraging AWS infrastructure * Collaborate with Data and Infrastructure teams to translate requirements into robust technical solutions that align with the overall integration architecture * Produce and maintain clear documentation of integration flows * Strong experience with RESTful API integrations * Proven understanding of integration ETL/ELT concepts - Contra
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        Position: AI Engineer / AI Agent / Backend AI Engineer We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. * Work on cutting-edge AI innovation - Location: Remote - Work Type: Contract - You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encour
        Position: AI Engineer / AI Agent / Backend AI Engineer We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. * Work on cutting-edge AI innovation - Location: Remote - Work Type: Contract - You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encour
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        NEWFEATURED

        Solutions Engineer

        Anson Mccade
        EC2, City of London, EC2V 6AA
        Competitive + benefits
        This is a fantastic opportunity for an experienced engineer with a cloud-first mindset who thrives on creating innovative prototypes and scalable solutions. Do you want to design and deliver solutions using the latest cloud services, AI, and emerging technologies to solve real-world challenges? * Supporting the delivery of group-wide digital initiatives, including in-house Generative AI solutions. * Building reusable playbooks, architectures, and templates to accelerate solution delivery across companies. * Partnering with stakeholders to translate business needs into technical solutions that are secure, scalable, and maintainable. * Strong understanding of solution architecture principles (scalability, security, performance). £50,000 to 60,000 GBP -
        This is a fantastic opportunity for an experienced engineer with a cloud-first mindset who thrives on creating innovative prototypes and scalable solutions. Do you want to design and deliver solutions using the latest cloud services, AI, and emerging technologies to solve real-world challenges? * Supporting the delivery of group-wide digital initiatives, including in-house Generative AI solutions. * Building reusable playbooks, architectures, and templates to accelerate solution delivery across companies. * Partnering with stakeholders to translate business needs into technical solutions that are secure, scalable, and maintainable. * Strong understanding of solution architecture principles (scalability, security, performance). £50,000 to 60,000 GBP -
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        PREMIUM

        AI Solutions Engineer

        McGregor Boyall Associates Limited
        EC1, City of London
        Negotiable
        McGregor Boyall have partnered with a Logistics company who are seeking support to identify, design, and create AI-driven solutions that can drive operational efficiency and foster innovation across their organization. * Identifying and prioritizing high-impact AI use cases across departments * Designing and deploying AI agents and tools to automate tasks and optimize internal workflows. * Integrating AI capabilities with existing systems and platforms. * Leveraging proprietary and external data to develop, train, and fine-tune user-generated AI models. * Ensuring all solutions meet rigorous standards for data privacy, security, and compliance. * improving solutions based on real-world usage and feedback. * Build and deploy AI-powered workflows - This is a contract role - negotiable day rate. * Python or JavaScript * Knowledge of automation platforms * Strong experien
        McGregor Boyall have partnered with a Logistics company who are seeking support to identify, design, and create AI-driven solutions that can drive operational efficiency and foster innovation across their organization. * Identifying and prioritizing high-impact AI use cases across departments * Designing and deploying AI agents and tools to automate tasks and optimize internal workflows. * Integrating AI capabilities with existing systems and platforms. * Leveraging proprietary and external data to develop, train, and fine-tune user-generated AI models. * Ensuring all solutions meet rigorous standards for data privacy, security, and compliance. * improving solutions based on real-world usage and feedback. * Build and deploy AI-powered workflows - This is a contract role - negotiable day rate. * Python or JavaScript * Knowledge of automation platforms * Strong experien
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        Work as part of evolving multi-disciplinary teams which may include Software Engineers, Enterprise Technology Engineers, Designers, SecOps, and Product owners to deliver value through the application of specialist skills - We are looking for an Endur Technology Engineer who is an experienced Endur practitioner with a deep level of application and trading expertise. Technology IT&S Group - You will bring knowledge of commodity trading and the use of ERTM systems to manage activity and be familiar with both the business application of these technologies and the broad concepts behind Agile technology delivery and DevOps. You can improve your skills through continuous learning of new technologies, trends & methods, applying knowledge gain
        Work as part of evolving multi-disciplinary teams which may include Software Engineers, Enterprise Technology Engineers, Designers, SecOps, and Product owners to deliver value through the application of specialist skills - We are looking for an Endur Technology Engineer who is an experienced Endur practitioner with a deep level of application and trading expertise. Technology IT&S Group - You will bring knowledge of commodity trading and the use of ERTM systems to manage activity and be familiar with both the business application of these technologies and the broad concepts behind Agile technology delivery and DevOps. You can improve your skills through continuous learning of new technologies, trends & methods, applying knowledge gain
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        Espire Infolabs is hiring for Senior .Net Developer for London, UK location. Role : Dot Net Developer/Lead - Location: London, UK(3 Days/week onsite) Desired Industry Experience: 7+ years - Relevant Experience: .Net Core, Azure functions, Azure Functions, Microservice Architecture. Proven experience as a .NET Core Developer with expertise in Microsoft Azure. Proficiency in C# and .NET Core for server-side development. Excellent Coding skills and best practices - Strong experience of Azure services, including but not limited to Azure App Service, Azure Functions, Azure SQL Database, and Azure DevOps. Experience with containerization technologies (e.g., Docker) and orchestration (e.g., Kubernetes) is a plus. Familiarity with cloud security best practices and compliance requirements. Knowledge of database systems, MS SQL, and NoSQL databases. Experience with version cont
        Espire Infolabs is hiring for Senior .Net Developer for London, UK location. Role : Dot Net Developer/Lead - Location: London, UK(3 Days/week onsite) Desired Industry Experience: 7+ years - Relevant Experience: .Net Core, Azure functions, Azure Functions, Microservice Architecture. Proven experience as a .NET Core Developer with expertise in Microsoft Azure. Proficiency in C# and .NET Core for server-side development. Excellent Coding skills and best practices - Strong experience of Azure services, including but not limited to Azure App Service, Azure Functions, Azure SQL Database, and Azure DevOps. Experience with containerization technologies (e.g., Docker) and orchestration (e.g., Kubernetes) is a plus. Familiarity with cloud security best practices and compliance requirements. Knowledge of database systems, MS SQL, and NoSQL databases. Experience with version cont
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        NVIDIA is looking for an expert software engineer to help us deliver CUDA-X libraries across the NVIDIA CPU and GPU ecosystem. If you're a creative and autonomous engineer with a real passion for technology, we want to hear from you! For over a decade, NVIDIA's accelerated computing platform has revolutionized HPC and AI with applications ranging from COVID-19 research to autonomous machines. Did you know that our team develops the GPU/CPU-accelerated mathematical libraries that make all of this possible? The hardware and software accelerated computing ecosystem is constantly evolving, including shifts towards hybrid backends, deep integration with high-level languages and ecosystems (such as Python, Numpy, JAX, MLIR), and optimization at runtime for maximum flexibility and performance. Our libraries follow CUDA Everywhere approach to
        NVIDIA is looking for an expert software engineer to help us deliver CUDA-X libraries across the NVIDIA CPU and GPU ecosystem. If you're a creative and autonomous engineer with a real passion for technology, we want to hear from you! For over a decade, NVIDIA's accelerated computing platform has revolutionized HPC and AI with applications ranging from COVID-19 research to autonomous machines. Did you know that our team develops the GPU/CPU-accelerated mathematical libraries that make all of this possible? The hardware and software accelerated computing ecosystem is constantly evolving, including shifts towards hybrid backends, deep integration with high-level languages and ecosystems (such as Python, Numpy, JAX, MLIR), and optimization at runtime for maximum flexibility and performance. Our libraries follow CUDA Everywhere approach to
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        Network Infrastructure Automation Engineer X3 with strong skills in network automation and ideally expereince of migrating networks from Cisco to Aruba, is needed to support our higher education client drive forward the automation of their network automation, which is the largest across the UK higher education sector. * Network infrastructure automation using DevOps practices. * Strong hands-on experience with: Terraform, Ansible, or similar IaC tools CI/CD tools (e.g., Jenkins, GitLab CI, Azure DevOps) AND Cloud platforms (AWS, Azure, or GCP) The scope will be to design, implement and test the automation of Network Infrastructure development which enables a scalable, secure, automated and resilient network service across our clients network estate. * Technical lead of infrastructure-as-code (IaC), automation, deployment, configuration, management and scaling.
        Network Infrastructure Automation Engineer X3 with strong skills in network automation and ideally expereince of migrating networks from Cisco to Aruba, is needed to support our higher education client drive forward the automation of their network automation, which is the largest across the UK higher education sector. * Network infrastructure automation using DevOps practices. * Strong hands-on experience with: Terraform, Ansible, or similar IaC tools CI/CD tools (e.g., Jenkins, GitLab CI, Azure DevOps) AND Cloud platforms (AWS, Azure, or GCP) The scope will be to design, implement and test the automation of Network Infrastructure development which enables a scalable, secure, automated and resilient network service across our clients network estate. * Technical lead of infrastructure-as-code (IaC), automation, deployment, configuration, management and scaling.
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        PSA Engineer - ADMS S6

        Stackstudio Digital Ltd.
        London
        From £500 to £550 per day
        Role/Job Title: PSA Engineer - ADMS S6 - We are seeking an experienced and hands-on PSA Engineer - ADMS S6, responsible for advanced Power Systems Application software development and successful delivery of assigned functions to meet corporate project/product commitments. Work Location: UK - Role Type: Contracting (Permanent/Fixed Term/Contracting) Mode of Working: Hybrid / Office-based - If Hybrid, Days in Office: Depends on customer - The Role - The responsibilities include working with Electric Utilities, ISOs (Independent System Operators), and Transmission System Operators (TSOs) on functional software specifications, designing, coding, testing, integration, application tuning, and delivery. Your Responsibilities - 1. Proficient in Electric Transmission EMS / SCADA / Implementation - 2. Preferable hands-on experience of implement
        Role/Job Title: PSA Engineer - ADMS S6 - We are seeking an experienced and hands-on PSA Engineer - ADMS S6, responsible for advanced Power Systems Application software development and successful delivery of assigned functions to meet corporate project/product commitments. Work Location: UK - Role Type: Contracting (Permanent/Fixed Term/Contracting) Mode of Working: Hybrid / Office-based - If Hybrid, Days in Office: Depends on customer - The Role - The responsibilities include working with Electric Utilities, ISOs (Independent System Operators), and Transmission System Operators (TSOs) on functional software specifications, designing, coding, testing, integration, application tuning, and delivery. Your Responsibilities - 1. Proficient in Electric Transmission EMS / SCADA / Implementation - 2. Preferable hands-on experience of implement
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        The Product Test and Diagnosis team requires more expertise and experience in the area of board / PCBA hardware test as part of our mission to deliver the high quality manufacturing test solutions that our advanced technology products require. * Experience in manufacturing test of advanced electronic systems - A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore enjoys a culture of continuous learning and constant innovation. The role requires close interaction with the hardware design team and other parts of the PTD team in order to define and develop appropriate test solutions using techniques such as boundary scan and embedded functional test. The Product
        The Product Test and Diagnosis team requires more expertise and experience in the area of board / PCBA hardware test as part of our mission to deliver the high quality manufacturing test solutions that our advanced technology products require. * Experience in manufacturing test of advanced electronic systems - A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore enjoys a culture of continuous learning and constant innovation. The role requires close interaction with the hardware design team and other parts of the PTD team in order to define and develop appropriate test solutions using techniques such as boundary scan and embedded functional test. The Product
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        Sales Engineer

        THE IDOLS GROUP LIMITED
        London
        £80000 - £100000 per annum
        Data Idols are working with a fast-growing technology organisation to hire a Sales Engineer. As a Sales Engineer, you'll operate at the crossroads of data engineering, analytics, and stakeholder engagement. Salary: £80,000 - £100,000 - This is a highly collaborative, client-facing role focused on delivering impactful, data-driven solutions to real-world business challenges. The Opportunity - You'll be embedded directly into client teams, helping to scope business needs, define solution architecture, and implement scalable data products that deliver measurable value. This role offers the chance to bridge technical expertise with commercial outcomes, perfect for someone who enjoys designing and deploying solutions while partnering closely with both technical and non-technical stakeholders. If you thrive in dynamic environments and enjoy
        Data Idols are working with a fast-growing technology organisation to hire a Sales Engineer. As a Sales Engineer, you'll operate at the crossroads of data engineering, analytics, and stakeholder engagement. Salary: £80,000 - £100,000 - This is a highly collaborative, client-facing role focused on delivering impactful, data-driven solutions to real-world business challenges. The Opportunity - You'll be embedded directly into client teams, helping to scope business needs, define solution architecture, and implement scalable data products that deliver measurable value. This role offers the chance to bridge technical expertise with commercial outcomes, perfect for someone who enjoys designing and deploying solutions while partnering closely with both technical and non-technical stakeholders. If you thrive in dynamic environments and enjoy
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        Frequently Asked Questions

        How many permanent API jobs are there in St James, South West London?
        There are 5 permanent API jobs within 20 miles of St James, South West London available on JustEngineers right now.

        What other similar jobs are there to permanent API jobs in St James, South West London?
        As well as permanent API jobs in St James, South West London, you can find permanent Engineering, Software Development, Electrical Engineering, amongst many others.