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        4 Permanent API jobs in City of London + 20 miles

        QA Automation Engineer

        Euro Car Parks
        W1, Central London
        Unspecified
        Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
        Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
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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) * Build custom applications using Power Apps to meet specific business requirements
        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) * Build custom applications using Power Apps to meet specific business requirements
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        NEWFEATURED
        5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
        5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
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        NEW

        7 exact matches jobs are outside your preferred location

        Hawkrose is delighted to announce we are hiring for the role of Senior Software Developer. In this role, the successful candidate will be responsible for the delivery of exciting projects and products across our Civil Aviation, Defence and Public Sector industry verticals. The successful candidate will be given the autonomy to set their own direction of work, and will work closely with the Head of Development to establish best practice across the Hawkrose development function. The role requires a mixture of home and office working with the expectation that the successful candidate will manage their own time and location to best deliver for our customers. Required Skills - The successful candidate will be a full stack software engineer with experience of enterprise grade software development and an agile development environment.
        Hawkrose is delighted to announce we are hiring for the role of Senior Software Developer. In this role, the successful candidate will be responsible for the delivery of exciting projects and products across our Civil Aviation, Defence and Public Sector industry verticals. The successful candidate will be given the autonomy to set their own direction of work, and will work closely with the Head of Development to establish best practice across the Hawkrose development function. The role requires a mixture of home and office working with the expectation that the successful candidate will manage their own time and location to best deliver for our customers. Required Skills - The successful candidate will be a full stack software engineer with experience of enterprise grade software development and an agile development environment.
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        Please note that relevant training, guidance, and advice will be given. This document lists the responsibilities you will encompass in your daily role. Company purpose statement: To use the best technology to better connect people. Company Profile - We are an award-winning technology services company based in Bedford. Established in 2006, we have an outstanding growth record, fantastic clients, and an excellent working environment. Committed to delivering high-touch Technology services to the property sector, specifically skyscrapers, our aim is to provide the highest levels of service coupled with a great working environment. Were hiring an experienced Smart Systems Manager to lead the delivery, integration, and optimisation of smart technologies across multiple client properties. You will act as the central point of contact for all things smartfrom IoT sensors and a
        Please note that relevant training, guidance, and advice will be given. This document lists the responsibilities you will encompass in your daily role. Company purpose statement: To use the best technology to better connect people. Company Profile - We are an award-winning technology services company based in Bedford. Established in 2006, we have an outstanding growth record, fantastic clients, and an excellent working environment. Committed to delivering high-touch Technology services to the property sector, specifically skyscrapers, our aim is to provide the highest levels of service coupled with a great working environment. Were hiring an experienced Smart Systems Manager to lead the delivery, integration, and optimisation of smart technologies across multiple client properties. You will act as the central point of contact for all things smartfrom IoT sensors and a
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        We are seeking a proactive and customer-focused Service Desk Analyst to join our Service Management team. In this role, you will deliver prompt and professional solutions for customer requests and be the first point of contact for our internal and external users, providing essential technical support. You will receive, triage, and resolve a wide range of IT-related incidents and service requests, ensuring a smooth and efficient user experience. Your ability to communicate effectively, diagnose issues, and escalate appropriately will be crucial to your success. Provide first-line support to users, attempting to resolve issues at Level 1. Diagnose and troubleshoot hardware, software, and network issues. Escalate complex incidents to Level 2 and 3 support teams, providing detailed information. Track and monitor incidents, ensuring timely resolution and communication with
        We are seeking a proactive and customer-focused Service Desk Analyst to join our Service Management team. In this role, you will deliver prompt and professional solutions for customer requests and be the first point of contact for our internal and external users, providing essential technical support. You will receive, triage, and resolve a wide range of IT-related incidents and service requests, ensuring a smooth and efficient user experience. Your ability to communicate effectively, diagnose issues, and escalate appropriately will be crucial to your success. Provide first-line support to users, attempting to resolve issues at Level 1. Diagnose and troubleshoot hardware, software, and network issues. Escalate complex incidents to Level 2 and 3 support teams, providing detailed information. Track and monitor incidents, ensuring timely resolution and communication with
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        These jobs might also interest you

        Job Summary: We are seeking an experienced Technical Consultant with deep expertise in Loan IQ and related technologies to join our team. The ideal candidate will have extensive experience in wholesale lending, data integration, and business intelligence, with a proven track record of technical solution delivery. * Loan IQ Expertise:Provide technical consultancy and support for Loan IQ implementations, upgrades, and migrations. * Technical Solution Delivery:Design and implement architecture for real-time and end-of-day interfaces around Loan IQ, including front office integration, secondary loan trading, and agency deal booking. * Training and Development:Conduct technical training sessions for project teams and end-users. * Technical Support:Provide technical SME support for new designs and enhancements. * Technical Skills:Proficiency in Loan IQ versions 5.5 to 7.5,
        Job Summary: We are seeking an experienced Technical Consultant with deep expertise in Loan IQ and related technologies to join our team. The ideal candidate will have extensive experience in wholesale lending, data integration, and business intelligence, with a proven track record of technical solution delivery. * Loan IQ Expertise:Provide technical consultancy and support for Loan IQ implementations, upgrades, and migrations. * Technical Solution Delivery:Design and implement architecture for real-time and end-of-day interfaces around Loan IQ, including front office integration, secondary loan trading, and agency deal booking. * Training and Development:Conduct technical training sessions for project teams and end-users. * Technical Support:Provide technical SME support for new designs and enhancements. * Technical Skills:Proficiency in Loan IQ versions 5.5 to 7.5,
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        PREMIUM
        Were looking for a Principal AI Engineer who combines deep technical expertise with the ability to set direction, influence stakeholders, and shape the future of AI engineering across the enterprise. As a Principal AI Engineer, you will serve as both a hands-on technical leader and a strategic partner driving architectural choices, aligning with business and technology stakeholders, and ensuring that our AI systems are secure, reliable, and scalable. Our AI Acceleration organisation is building high-impact AI-powered applications that deliver measurable business value at speed. This is a role for leaders who thrive at the intersection of disciplined engineering, AI innovation, and organizational influence. You will wo
        Were looking for a Principal AI Engineer who combines deep technical expertise with the ability to set direction, influence stakeholders, and shape the future of AI engineering across the enterprise. As a Principal AI Engineer, you will serve as both a hands-on technical leader and a strategic partner driving architectural choices, aligning with business and technology stakeholders, and ensuring that our AI systems are secure, reliable, and scalable. Our AI Acceleration organisation is building high-impact AI-powered applications that deliver measurable business value at speed. This is a role for leaders who thrive at the intersection of disciplined engineering, AI innovation, and organizational influence. You will wo
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        Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. * Relevant software development experience, with strong expertise in .NET (C#) And ideally VB.NET - Contract - 6 Months - East Sussex - Hybrid model (3 days p/w on site) £375 - 425 p/d (outside IR35) Key Roles * Participate in migration of legacy systems built in C#, VB.NET, Angular, using SQL Server technologies. * Maintaining applications, ensuring reliability, maintainability, and evolution. * Act as a liaison between the development team and internal business stakeholders. * Implementation of modern architectures: micro services, containerised services, and serverless cloud-native components in AWS. * Diagnose and resolve complex support issues. * Collaborate with Business Anal
        Our client an industry leading private sector business located in East Sussex is looking for a full stack .Net developer. * Relevant software development experience, with strong expertise in .NET (C#) And ideally VB.NET - Contract - 6 Months - East Sussex - Hybrid model (3 days p/w on site) £375 - 425 p/d (outside IR35) Key Roles * Participate in migration of legacy systems built in C#, VB.NET, Angular, using SQL Server technologies. * Maintaining applications, ensuring reliability, maintainability, and evolution. * Act as a liaison between the development team and internal business stakeholders. * Implementation of modern architectures: micro services, containerised services, and serverless cloud-native components in AWS. * Diagnose and resolve complex support issues. * Collaborate with Business Anal
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        FEATURED
        Were looking for a Principal Python Engineer for a leading and scaling Telco business. * Leading the design and development of robust, scalable Python applications * Collaborating with product managers, engineers, and stakeholders to deliver high-quality solutions * Mentoring and supporting engineers, helping raise the overall technical bar * Extensive experience building complex applications in Python This is a chance to combine hands-on coding with technical leadership. * Setting technical direction and best practices for the engineering team * Driving innovation, architecture decisions, and adoption of modern engineering practices * Strong knowledge of modern frameworks (e.g., Django, FastAPI, Flask) * Experience with cloud platforms (AWS, GCP, or Azure) and scalab
        Were looking for a Principal Python Engineer for a leading and scaling Telco business. * Leading the design and development of robust, scalable Python applications * Collaborating with product managers, engineers, and stakeholders to deliver high-quality solutions * Mentoring and supporting engineers, helping raise the overall technical bar * Extensive experience building complex applications in Python This is a chance to combine hands-on coding with technical leadership. * Setting technical direction and best practices for the engineering team * Driving innovation, architecture decisions, and adoption of modern engineering practices * Strong knowledge of modern frameworks (e.g., Django, FastAPI, Flask) * Experience with cloud platforms (AWS, GCP, or Azure) and scalab
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        NEW

        Python Engineer

        McGregor Boyall Associates Limited
        EH1, Edinburgh
        Negotiable
        We're looking for an experienced Python Engineer with a strong understanding of AI/ML/ AWS, and commercial expertise in deploying AI systems using state-of-the-art machine learning libraries, cloud infrastructure, and modern Python-based tooling. * Strong Python 3.9+ skills with deep understanding of OOP, async/await, and debugging - 6-month contract (extensions highly likely) £480-£520 per day Outside ir35 - Remote contract * Building production-grade AI systems using LLMs, Object Detection, and OCR * Leveraging frameworks like Hugging Face Transformers, PyTorch, YOLO, OpenCV, and Pillow * Designing and deploying AI services via FastAPI, AWS Lambda, EKS/ECS, and S3 * Creating scalable data pipelines with Pandas, NumPy, SQLAlchemy, and Airflow * Supporting real-time model inference, edge deployments, and API integrati
        We're looking for an experienced Python Engineer with a strong understanding of AI/ML/ AWS, and commercial expertise in deploying AI systems using state-of-the-art machine learning libraries, cloud infrastructure, and modern Python-based tooling. * Strong Python 3.9+ skills with deep understanding of OOP, async/await, and debugging - 6-month contract (extensions highly likely) £480-£520 per day Outside ir35 - Remote contract * Building production-grade AI systems using LLMs, Object Detection, and OCR * Leveraging frameworks like Hugging Face Transformers, PyTorch, YOLO, OpenCV, and Pillow * Designing and deploying AI services via FastAPI, AWS Lambda, EKS/ECS, and S3 * Creating scalable data pipelines with Pandas, NumPy, SQLAlchemy, and Airflow * Supporting real-time model inference, edge deployments, and API integrati
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        NEW

        Fullstack .Net Developer

        Hays
        London
        £500.0 - £545.0 per day + Up to £545pd Umbrella
        I am currently working with a global engineering client who are actively seeking a Fullstack .Net Developer on a long-term contract basis. What you'll need to succeed * 10+ years' .Net Development experience, ideally in a large-scale organisation. * Strong fullstack experience with Razor, Blazor, & Javascript. * Strong experience with Azure Cloud Services. * Good understanding of DevOps best practices. * Experience with on-premises SQL services. What you'll get in return * Up to £545pd in-scope (Umbrella). * Initial 6-month contract with extensions. * Flexible hybrid working. What you need to do now - 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 caree
        I am currently working with a global engineering client who are actively seeking a Fullstack .Net Developer on a long-term contract basis. What you'll need to succeed * 10+ years' .Net Development experience, ideally in a large-scale organisation. * Strong fullstack experience with Razor, Blazor, & Javascript. * Strong experience with Azure Cloud Services. * Good understanding of DevOps best practices. * Experience with on-premises SQL services. What you'll get in return * Up to £545pd in-scope (Umbrella). * Initial 6-month contract with extensions. * Flexible hybrid working. What you need to do now - 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 caree
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        NEW
        Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - £475 a day Outside IR35. Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - Outside IR35 - £475 a day - My client has an urgent need for a senior full stack AI Engineer this is outside IR35, 100% remote working and contract will be initially 6 months but likely to extend this is paying £475 a day * LLM applications: LangChain, Pydantic-AI (similar frameworks), RAG systems, MCP servers * backend (Python / FastAPI) leveraging a Python-based framework for LLMs and AI-agent (pydanti
        Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - £475 a day Outside IR35. Senior full stack AI Engineer - Remote - AI - LLM - Typescript - react - Python - AWS - Outside IR35 - £475 a day - My client has an urgent need for a senior full stack AI Engineer this is outside IR35, 100% remote working and contract will be initially 6 months but likely to extend this is paying £475 a day * LLM applications: LangChain, Pydantic-AI (similar frameworks), RAG systems, MCP servers * backend (Python / FastAPI) leveraging a Python-based framework for LLMs and AI-agent (pydanti
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        They are looking for a Senior Software Engineer with strong Python expertise to join a high-impact programme, developing solutions that address complex operational challenges. If you're a Python engineer ready to step into a senior role, this could be the right move for you. Our client is a specialist technology consultancy delivering bespoke software and data solutions to government, defence, and critical national infrastructure sectors. * Design, develop, and test high-quality software solutions. * Proven commercial experience with Python and modern cloud technologies (AWS experience is a strong advantage). This is an opportunity to join a forward-looking team delivering software th
        They are looking for a Senior Software Engineer with strong Python expertise to join a high-impact programme, developing solutions that address complex operational challenges. If you're a Python engineer ready to step into a senior role, this could be the right move for you. Our client is a specialist technology consultancy delivering bespoke software and data solutions to government, defence, and critical national infrastructure sectors. * Design, develop, and test high-quality software solutions. * Proven commercial experience with Python and modern cloud technologies (AWS experience is a strong advantage). This is an opportunity to join a forward-looking team delivering software th
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        PREMIUM

        Software Engineer

        cer Financial
        EC2M, City of London
        From £900 to £1,000 per annum
        They are seeking a Software Engineer to work with them on a contract. * Scrum/agile methodology (Product owner and/or Scrum master), or ability to deliver software on short cycles - City of London - Hybrid (3/2 split) Contract £900 - £1000 per day (Via Umbrella) cer Financial are working alongside an international bank, who are based in the City of London. * Hands-on Full Stack development using React as front end and Java 21 as the primary language for back end * Work with other teams including Front office risk teams, trading desk, Quants, and DevOps to build state of the art front to back pricing and risk solutions, * Focus on non-functional requirements from the start increasing maintainability and reliability. * Continuous improvement of the development and release environment, tooling, and processes. * Work closely with the oper
        They are seeking a Software Engineer to work with them on a contract. * Scrum/agile methodology (Product owner and/or Scrum master), or ability to deliver software on short cycles - City of London - Hybrid (3/2 split) Contract £900 - £1000 per day (Via Umbrella) cer Financial are working alongside an international bank, who are based in the City of London. * Hands-on Full Stack development using React as front end and Java 21 as the primary language for back end * Work with other teams including Front office risk teams, trading desk, Quants, and DevOps to build state of the art front to back pricing and risk solutions, * Focus on non-functional requirements from the start increasing maintainability and reliability. * Continuous improvement of the development and release environment, tooling, and processes. * Work closely with the oper
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        FEATURED
        As a Senior Full stack Engineer for the SDK team, you will join a talented and collaborative team dedicated to building resilient, scalable, and delightful systems and experiences for our customers. * Collaborate closely with product designers, product managers, and engineers to deliver end-to-end experiences that delight customers. * Guide and mentor engineers, helping them manage technical debt, plan refactors, and improve engineering practices. * A strong ability to design and build for scalability, reliability, and performance across the stack. * Minimum 4 years of professional experience in software engineering, with significant exposure to both backend and frontend development. * Demonstrated ability to design and implement scalable, secure, and high-performing systems across th
        As a Senior Full stack Engineer for the SDK team, you will join a talented and collaborative team dedicated to building resilient, scalable, and delightful systems and experiences for our customers. * Collaborate closely with product designers, product managers, and engineers to deliver end-to-end experiences that delight customers. * Guide and mentor engineers, helping them manage technical debt, plan refactors, and improve engineering practices. * A strong ability to design and build for scalability, reliability, and performance across the stack. * Minimum 4 years of professional experience in software engineering, with significant exposure to both backend and frontend development. * Demonstrated ability to design and implement scalable, secure, and high-performing systems across th
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        NEW

        Software Engineer - Full Stack

        Anson Mccade
        South East
        GBP 70,035.00 per year;GBP 700.00 per week;GBP 70,000.00 per year;GBP
        As a Full Stack Software Engineer, you'll work closely with law enforcement customers to design, build, and maintain secure applications and services. * Design, develop, and maintain secure full-stack applications using modern frameworks and cloud-native technologies. They deliver secure, mission-critical software solutions that help protect the UK and its interests. With a strong focus on innovation, collaboration, and agility, they empower engineers to solve complex challenges in high-trust environments. * Collaborate with cross-functional teams and end-users to understand mission needs and translate them into scalable software solutions. This is a unique opportunity to contribute to national security through cutting-edge software engineering. ££700
        As a Full Stack Software Engineer, you'll work closely with law enforcement customers to design, build, and maintain secure applications and services. * Design, develop, and maintain secure full-stack applications using modern frameworks and cloud-native technologies. They deliver secure, mission-critical software solutions that help protect the UK and its interests. With a strong focus on innovation, collaboration, and agility, they empower engineers to solve complex challenges in high-trust environments. * Collaborate with cross-functional teams and end-users to understand mission needs and translate them into scalable software solutions. This is a unique opportunity to contribute to national security through cutting-edge software engineering. ££700
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        Contract Role: Azure AI Developer (.NET) They are seeking an experienced Azure AI Developer with a .NET background to join on an initial 6-month contract. * Strong experience as a .NET Developer (C#). * Design and develop AI-driven solutions within Azure, integrating with core .NET applications. * Leverage Azure AI services (AI Search, Azure OpenAI, Cognitive Services, Document Intelligence, etc.) to deliver intelligent automation. o Azure AI Search - We are supporting a leading data-first London Market insurer who are investing heavily in AI to streamline manual processes across the business. This role will focus on building out
        Contract Role: Azure AI Developer (.NET) They are seeking an experienced Azure AI Developer with a .NET background to join on an initial 6-month contract. * Strong experience as a .NET Developer (C#). * Design and develop AI-driven solutions within Azure, integrating with core .NET applications. * Leverage Azure AI services (AI Search, Azure OpenAI, Cognitive Services, Document Intelligence, etc.) to deliver intelligent automation. o Azure AI Search - We are supporting a leading data-first London Market insurer who are investing heavily in AI to streamline manual processes across the business. This role will focus on building out
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        Senior Software Developer

        Spectrum It Recruitment Limited
        EC1, City of London
        £100000 - £120000 per annum
        The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. You will be given the opportunity to work with the some of the latest technologies possible and will be expected to produce excellent code for our clients in house software applications and trading platform. Many projects are greenfield projects and allow you to make your own mark on the development process early on. Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe. This role is within the sports trading industry so any candidate applying should either have an interest in the industry, or experience
        The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. You will be given the opportunity to work with the some of the latest technologies possible and will be expected to produce excellent code for our clients in house software applications and trading platform. Many projects are greenfield projects and allow you to make your own mark on the development process early on. Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe. This role is within the sports trading industry so any candidate applying should either have an interest in the industry, or experience
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        We are looking for a Senior Backend Engineer to join our Algo & MLOps team. You will collaborate closely with Data Scientists, Backend and Data Engineers to lead major initiatives end-to-end ensuring that our ML infrastructure and services supporting model predictions adhere to our requirements of latency, reliability and scale. - Collaborate closely with data scientists, MLOps and backend engineers to build and manage infrastructure and services for training and deployment of a diverse set of ML and NLP models - We are the leader in human-centric cybersecurity. Half a million customers, including 87 of the Fortune 100, rely on Proofpoint to protect their organizations. Were driven by a mission to stay ahead of bad actors and safeguard the digital world. Join us in our pursuit to defe
        We are looking for a Senior Backend Engineer to join our Algo & MLOps team. You will collaborate closely with Data Scientists, Backend and Data Engineers to lead major initiatives end-to-end ensuring that our ML infrastructure and services supporting model predictions adhere to our requirements of latency, reliability and scale. - Collaborate closely with data scientists, MLOps and backend engineers to build and manage infrastructure and services for training and deployment of a diverse set of ML and NLP models - We are the leader in human-centric cybersecurity. Half a million customers, including 87 of the Fortune 100, rely on Proofpoint to protect their organizations. Were driven by a mission to stay ahead of bad actors and safeguard the digital world. Join us in our pursuit to defe
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        show more

        What is the average salary for API in City of London?

        Average salary per year
        £82,499

        The average salary for a API in City of London is £82,499. API in City of London salaries range from £64,999 to £92,499.

        Frequently Asked Questions

        How many permanent API jobs are there in City of London?
        There are 4 permanent API jobs within 20 miles of City of London available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in City of London?
        As well as permanent API jobs in City of London, you can find permanent IT, Software Development, Architecture, amongst many others.