Date posted
Commute time
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Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
Locations
- The City, City (EC4)
- Holborn
- The City, City (EC3)
- Datchet Common
- Euston
- Frimley
- Ireland
- Shoreditch
- Southwark
- Thames View Industrial Park
- City of London
- Reading
- Central London
- West End
- Northampton
- South East London
- Cheltenham
- East London
- Milton Keynes
- Southampton
- London
- Berkshire
- Surrey
- Hampshire
- Oxfordshire
- Northamptonshire
- Buckinghamshire
- Gloucestershire
- Hertfordshire
- Bedfordshire
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- Midlands
- South West
22 Contract API jobs in Henley-On-Thames + 20 miles
221 exact matches jobs are outside your preferred location
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Mainframe (where relevant): z/OS, CICS, IMS, VSAM, JCL, Control-M, rehost/refactor/API enablement.
Mainframe (where relevant): z/OS, CICS, IMS, VSAM, JCL, Control-M, rehost/refactor/API enablement.
Strong background in software architecture, microservices, and API design.
Strong background in software architecture, microservices, and API design.
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Strong application security background (OWASP Top 10, API security).
Strong application security background (OWASP Top 10, API security).
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Experience in API and BDD testing
Experience in API and BDD testing
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Ideal candidates will have a good background in Java and Python, along with a strong understanding of APIs (REST API, XML). * Api
Ideal candidates will have a good background in Java and Python, along with a strong understanding of APIs (REST API, XML). * Api
PREMIUM
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Large Language API's (from 2021) * Assisting with the maintenance and iteration of a FastAPI-based web API hosted on AWS.
Large Language API's (from 2021) * Assisting with the maintenance and iteration of a FastAPI-based web API hosted on AWS.
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Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization).
Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization).
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Global Claims, IT Solutions Leader
Global Claims, IT Solutions Leader
MARSH CORPORATE SERVICES LIMITED
The City, EC3R 5BU
Discretionary Bonus, Pension Scheme & Private Healthcare
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
NEWPREMIUM
Experience with AWS, Kubernetes, Service Mesh, API gateways, and API Security (authentication and authorization).
Experience with AWS, Kubernetes, Service Mesh, API gateways, and API Security (authentication and authorization).
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Lead all phases of the testing lifecycle, focusing on comprehensive coverage across functional and non-functional testing (e.g., performance, load), encompassing Data, API, and UI layers.
Lead all phases of the testing lifecycle, focusing on comprehensive coverage across functional and non-functional testing (e.g., performance, load), encompassing Data, API, and UI layers.
PREMIUM
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iPaaS Platform & Integration Engineer
iPaaS Platform & Integration Engineer
Informed Recruitment Limited
MK3, Milton Keynes, MK3 6EB
£50000 - £65000 per annum + Excellent Benefits
API & Web Services - REST/RESTFul, SOAP, XML, JSON
API & Web Services - REST/RESTFul, SOAP, XML, JSON
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Senior Technical Business Analyst
Senior Technical Business Analyst
REC SOLUTIONS LIMITED
The City, EC4
Competitive base salary plus bonus and benefits
Technical documentation Produce and maintain detailed technical and functional documentation, including API specifications, configuration workflows, and integration guides. * Proven ability to produce and maintain high-quality technical documentation and API specifications suitable for both engineering and client consumption.
Technical documentation Produce and maintain detailed technical and functional documentation, including API specifications, configuration workflows, and integration guides. * Proven ability to produce and maintain high-quality technical documentation and API specifications suitable for both engineering and client consumption.
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Familiarity with API Security, Container Security, AWS Cloud Security
Familiarity with API Security, Container Security, AWS Cloud Security
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Agility core practices, Agility core practices, Analytics, API and platform design, Business Analysis, Cloud Platforms, Coaching, Communication, Configuration management and release, Continuous deployment and release, Data Structures and Algorithms (Inactive), Digital Project Management, Documentation and knowledge sharing, Facilitation, Information Security, iOS and Android development, Mentoring, Metrics definition and instrumentation, NoSql data modelling, Relational Data Modelling, Risk Management, Scripting, Service operations and resiliency, Software Design and Development, Source control and code management {+ 4 more}
Agility core practices, Agility core practices, Analytics, API and platform design, Business Analysis, Cloud Platforms, Coaching, Communication, Configuration management and release, Continuous deployment and release, Data Structures and Algorithms (Inactive), Digital Project Management, Documentation and knowledge sharing, Facilitation, Information Security, iOS and Android development, Mentoring, Metrics definition and instrumentation, NoSql data modelling, Relational Data Modelling, Risk Management, Scripting, Service operations and resiliency, Software Design and Development, Source control and code management {+ 4 more}
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We employ a micro front-end (MFE) architecture on the web, and agentic workflows with API-first services behind it, to integrate risk insights seamlessly across workflows and surfaces. * Design, develop, and operate secure, scalable APIs/microservices in Python (FastAPI) or Java (Spring Boot), following API-first principles * Experience building and consuming APIs; strong grasp of REST/gRPC and API
We employ a micro front-end (MFE) architecture on the web, and agentic workflows with API-first services behind it, to integrate risk insights seamlessly across workflows and surfaces. * Design, develop, and operate secure, scalable APIs/microservices in Python (FastAPI) or Java (Spring Boot), following API-first principles * Experience building and consuming APIs; strong grasp of REST/gRPC and API
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Job title: Lead Integration Developer - Location: London, UK - Job type: Contract (Inside IR35) About the Role As a Lead Integration Developer, you will be responsible for designing, developing, and maintaining integration solutions across various platforms, including Guidewire InsuranceSuite and other core systems. You will lead a team of developers, collaborate with stakeholders, and ensure the delivery of integration projects that meet business and technical requirements. What will you do? * Lead the design and implementation of integration solutions using APIs, web services, and messaging systems. * Collaborate with business analysts and architects to define integration requirements and strategies. * Develop and maintain integration components using technologies such as Java, REST/JSON, XML, and Enterprise Messaging Systems.
Job title: Lead Integration Developer - Location: London, UK - Job type: Contract (Inside IR35) About the Role As a Lead Integration Developer, you will be responsible for designing, developing, and maintaining integration solutions across various platforms, including Guidewire InsuranceSuite and other core systems. You will lead a team of developers, collaborate with stakeholders, and ensure the delivery of integration projects that meet business and technical requirements. What will you do? * Lead the design and implementation of integration solutions using APIs, web services, and messaging systems. * Collaborate with business analysts and architects to define integration requirements and strategies. * Develop and maintain integration components using technologies such as Java, REST/JSON, XML, and Enterprise Messaging Systems.
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Location: Esher (two days WFH) Must have Right to Work in the UK (cannot provide sponsorship) This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power Apps,
Location: Esher (two days WFH) Must have Right to Work in the UK (cannot provide sponsorship) This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power Apps,
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Location: London - Hybrid (2-3 days in office per week) Contract Duration: 6 months - Day Rate: £382.50 (Inside IR35) About the Role - We work on providing new models, tradable insights, distinctive data sets, and agile technology solutions that empower analysts and support commercial decision-making. We provide direct technology support worldwide, combining IT expertise with practical analytics experience, including data science methods, statistics, numerical algorithms, derivative pricing, and optimisation. You will deliver practical technology solutions while supporting strategic initiatives such as modern data repositories, data ontologies, analytical toolkits, visualisation technologies, and cloud computing. You will work closely with analysts across energy and commodities markets to craft and build solutions to complex business problems in a multifaceted commerc
Location: London - Hybrid (2-3 days in office per week) Contract Duration: 6 months - Day Rate: £382.50 (Inside IR35) About the Role - We work on providing new models, tradable insights, distinctive data sets, and agile technology solutions that empower analysts and support commercial decision-making. We provide direct technology support worldwide, combining IT expertise with practical analytics experience, including data science methods, statistics, numerical algorithms, derivative pricing, and optimisation. You will deliver practical technology solutions while supporting strategic initiatives such as modern data repositories, data ontologies, analytical toolkits, visualisation technologies, and cloud computing. You will work closely with analysts across energy and commodities markets to craft and build solutions to complex business problems in a multifaceted commerc
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we are hiring forTechnical Data Architect - location: Central London - Type : Permanent - Hybrid role (2-3 days from client location) We are seeking a highly skilled TechnicalData Architect- with expertise in Databricks, PySpark, and modern data engineering practices. The ideal candidate will lead the design, development, and optimization of scalable data pipelines, while ensuring data accuracy, consistency, and performance across the enterprise Lakehouse platform. This role requires strong leadership, technical depth, and the ability to collaborate with cross-functional teams. Key Responsibilities - Lead the design, development, and maintenance of scalable, high-performance data pipelines on Databricks. Architect and implement data ingestion, transformation, and integration workflows using PySpark, SQL, and Delta Lake.
we are hiring forTechnical Data Architect - location: Central London - Type : Permanent - Hybrid role (2-3 days from client location) We are seeking a highly skilled TechnicalData Architect- with expertise in Databricks, PySpark, and modern data engineering practices. The ideal candidate will lead the design, development, and optimization of scalable data pipelines, while ensuring data accuracy, consistency, and performance across the enterprise Lakehouse platform. This role requires strong leadership, technical depth, and the ability to collaborate with cross-functional teams. Key Responsibilities - Lead the design, development, and maintenance of scalable, high-performance data pipelines on Databricks. Architect and implement data ingestion, transformation, and integration workflows using PySpark, SQL, and Delta Lake.
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Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. 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? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. 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? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
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Up to £640 per day (Inside IR35) London / Remote - 6 months - My client is an instantly recognisable consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Lead Java Developer within the public sector * Active Security Clearance (SC) * Java (8/11/17+): Expert-level programming and deep understanding of the language and its core libraries * Spring Boot: Expert in building RESTful APIs and microservices * AWS: Strong experience with core AWS services (EC2, S3, Lambda, IAM, etc.) * Kafka / Messaging Systems: Expertise in building event-driven architectures * SQL: Strong experience with relational databases and query optimization * REST / JSON APIs: Designing, developing, and consuming scalable APIs * Docker: Proficiency in containerizing applications for local and cloud environments
Up to £640 per day (Inside IR35) London / Remote - 6 months - My client is an instantly recognisable consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Lead Java Developer within the public sector * Active Security Clearance (SC) * Java (8/11/17+): Expert-level programming and deep understanding of the language and its core libraries * Spring Boot: Expert in building RESTful APIs and microservices * AWS: Strong experience with core AWS services (EC2, S3, Lambda, IAM, etc.) * Kafka / Messaging Systems: Expertise in building event-driven architectures * SQL: Strong experience with relational databases and query optimization * REST / JSON APIs: Designing, developing, and consuming scalable APIs * Docker: Proficiency in containerizing applications for local and cloud environments
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Position: Backend Engineer - Location: Remote (UK) Work Type: Contract - Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
Position: Backend Engineer - Location: Remote (UK) Work Type: Contract - Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
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Azure Cloud Engineer
Azure Cloud Engineer
MS Talent Ltd
CM23, Bishop's Stortford
£45000 - £52000 per annum, Benefits + Bonus
An Azure Cloud Engineer (Azure, Azure Infrastructure, Azure Front Door, Azure Networking) is needed to manage a critical Azure-hosted platform used by 1,200+ users. Youll be responsible for optimising performance, cost, and reliability across a large-scale Azure environment. * Experience managing Azure Infrastructure * Hands-on with Azure Networking Azure Front Door, firewalls, APIs * Azure backups and performance tuning * Confident monitoring and optimising Azure environments * Focused on service resilience and improving Azure Infrastructure - As the Azure Cloud Engineer, youll be part of a team responsible for an Azure estate, ensuring it runs smoothly, securely, and cost-effectively. Daily tasks include monitoring system performance, Azure optimisation, and acting as a point of escalation, and supporting development teams on Azure Networking and Azure Front Door pr
An Azure Cloud Engineer (Azure, Azure Infrastructure, Azure Front Door, Azure Networking) is needed to manage a critical Azure-hosted platform used by 1,200+ users. Youll be responsible for optimising performance, cost, and reliability across a large-scale Azure environment. * Experience managing Azure Infrastructure * Hands-on with Azure Networking Azure Front Door, firewalls, APIs * Azure backups and performance tuning * Confident monitoring and optimising Azure environments * Focused on service resilience and improving Azure Infrastructure - As the Azure Cloud Engineer, youll be part of a team responsible for an Azure estate, ensuring it runs smoothly, securely, and cost-effectively. Daily tasks include monitoring system performance, Azure optimisation, and acting as a point of escalation, and supporting development teams on Azure Networking and Azure Front Door pr
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Location: Hybrid Working London Office/Remote - Reporting to: Engineering Manager - We are seeking innovative Linux Systems Engineer to help shape the next generation of secure endpoint solutions. This role is open to both experienced engineers ready to tackle complex challenges and mid-level engineers eager to learn, grow, and innovate. You will work at the intersection of Linux internals, networking, virtualisation, and security, building solutions for high-profile clients. The work you do will contribute to endpoint technologies that will set the direction for the next decadejust as todays established solutions set the standard a decade ago. * Linux OS Development: Design, develop, and maintain Linux-based operating systems with a strong emphasis on security, performance, and reliability. * System & Security Engineering: Work with Linux distributions, kernel-level
Location: Hybrid Working London Office/Remote - Reporting to: Engineering Manager - We are seeking innovative Linux Systems Engineer to help shape the next generation of secure endpoint solutions. This role is open to both experienced engineers ready to tackle complex challenges and mid-level engineers eager to learn, grow, and innovate. You will work at the intersection of Linux internals, networking, virtualisation, and security, building solutions for high-profile clients. The work you do will contribute to endpoint technologies that will set the direction for the next decadejust as todays established solutions set the standard a decade ago. * Linux OS Development: Design, develop, and maintain Linux-based operating systems with a strong emphasis on security, performance, and reliability. * System & Security Engineering: Work with Linux distributions, kernel-level
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Our Purpose - Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary - Overview - We are looking for a software engineer to join an award winning team with a proven track record of combining data science techniques with an intimate knowledge of payments data to aid Financial Institutions in their fight against money laundering and fraud. Headquartered in The City of London, we craft bespoke services that help our clien
Our Purpose - Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary - Overview - We are looking for a software engineer to join an award winning team with a proven track record of combining data science techniques with an intimate knowledge of payments data to aid Financial Institutions in their fight against money laundering and fraud. Headquartered in The City of London, we craft bespoke services that help our clien
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Related Jobs
Locations
- The City, City (EC4)
- Holborn
- The City, City (EC3)
- Datchet Common
- Euston
- Frimley
- Ireland
- Shoreditch
- Southwark
- Thames View Industrial Park
- City of London
- Reading
- Central London
- West End
- Northampton
- South East London
- Cheltenham
- East London
- Milton Keynes
- Southampton
- London
- Berkshire
- Surrey
- Hampshire
- Oxfordshire
- Northamptonshire
- Buckinghamshire
- Gloucestershire
- Hertfordshire
- Bedfordshire
- South East
- East Midlands
- Midlands
- South West