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78 Contract API jobs in Twickenham + 20 miles
249 exact matches jobs are outside your preferred location
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Location: London - 1x a month - Salary: Up to £95,000 (D.O.E) + benefits - Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily in new innovations that will shape the sector for years to come. This is an exciting opportunity for a motivated Senior Engineer who wants to grow in a high-performing, forward-thinking business. As a Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python-based cloud microservices (FastAPI preferred), contributing to the architecture of resilient, high-performance systems, and collaborating with a cross-functional team to deliver features at pace.
Location: London - 1x a month - Salary: Up to £95,000 (D.O.E) + benefits - Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily in new innovations that will shape the sector for years to come. This is an exciting opportunity for a motivated Senior Engineer who wants to grow in a high-performing, forward-thinking business. As a Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python-based cloud microservices (FastAPI preferred), contributing to the architecture of resilient, high-performance systems, and collaborating with a cross-functional team to deliver features at pace.
London (Hybrid - 5 days a month) £80,000 - £110,000 depending on experience - My client, a RegTech leader, is looking for a Machine Learning Engineer to join a growing AI/ML team working on cutting-edge NLP, search, and classification problems. This is a chance to shape and productionise ML solutions that directly impact a global user base in financial services. What You'll Do * Design, build, and productionise ML/NLP models for large-scale SaaS products and APIs * Write clear, modular, testable Python code and deploy via modern CI/CD pipelines * Improve performance and scalability of models, data ingestion, cleaning, and pipelines * Explore new ML/NLP techniques and keep the team up to date with research trends * Propose cloud architectures and ensure robust ML operations (MLOps) * Collaborate through code reviews, knowledge sharing, and documentation - What We're Lo
London (Hybrid - 5 days a month) £80,000 - £110,000 depending on experience - My client, a RegTech leader, is looking for a Machine Learning Engineer to join a growing AI/ML team working on cutting-edge NLP, search, and classification problems. This is a chance to shape and productionise ML solutions that directly impact a global user base in financial services. What You'll Do * Design, build, and productionise ML/NLP models for large-scale SaaS products and APIs * Write clear, modular, testable Python code and deploy via modern CI/CD pipelines * Improve performance and scalability of models, data ingestion, cleaning, and pipelines * Explore new ML/NLP techniques and keep the team up to date with research trends * Propose cloud architectures and ensure robust ML operations (MLOps) * Collaborate through code reviews, knowledge sharing, and documentation - What We're Lo
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Senior Frontend Engineer (Next.js / React) High-Growth SaaS | Build Elegant, User-First Products - In partnership with Robert Half Limited. We're a high-growth SaaS company scaling fast, and we're looking for a Senior Frontend Engineer to join our team. This is a chance to shape products used by thousands of customers, working with modern tools and a team that values craftsmanship, speed, and impact. Hybrid Working in the City of London, London. 3 days in the office and 2 days from home. What You'll Do * Build and scale complex, high-performing web applications with Next.js and React * Collaborate with design and product to create polished, intuitive, responsive interfaces * Drive improvements in performance, accessibility, and scalability across platforms * Contribute to architecture decisions, code reviews, and design discussions
Senior Frontend Engineer (Next.js / React) High-Growth SaaS | Build Elegant, User-First Products - In partnership with Robert Half Limited. We're a high-growth SaaS company scaling fast, and we're looking for a Senior Frontend Engineer to join our team. This is a chance to shape products used by thousands of customers, working with modern tools and a team that values craftsmanship, speed, and impact. Hybrid Working in the City of London, London. 3 days in the office and 2 days from home. What You'll Do * Build and scale complex, high-performing web applications with Next.js and React * Collaborate with design and product to create polished, intuitive, responsive interfaces * Drive improvements in performance, accessibility, and scalability across platforms * Contribute to architecture decisions, code reviews, and design discussions
Role: API Integration Engineer - We are seeking a highly skilled API Integration Engineer to join our technology team. * Design, build, and maintain API integrations for telecom OSS/BSS systems, Openreach APIs, supplier platforms, and enterprise applications. * Manage API version upgrades and partner change notifications. * Apply robust fault handling, retry logic, and back-off strategies for resilient API operations. * Design and maintain CI/CD pipelines using GitLab, Azure DevOps, and Jenkins for API and data workflow deployments. * Work closely with the Chief Enterprise & Security Officer and enterprise architects to co-develop a five-year, API-first roadmap for intelligent, context-aware systems. * Provide technical leadership and guidance on mode
Role: API Integration Engineer - We are seeking a highly skilled API Integration Engineer to join our technology team. * Design, build, and maintain API integrations for telecom OSS/BSS systems, Openreach APIs, supplier platforms, and enterprise applications. * Manage API version upgrades and partner change notifications. * Apply robust fault handling, retry logic, and back-off strategies for resilient API operations. * Design and maintain CI/CD pipelines using GitLab, Azure DevOps, and Jenkins for API and data workflow deployments. * Work closely with the Chief Enterprise & Security Officer and enterprise architects to co-develop a five-year, API-first roadmap for intelligent, context-aware systems. * Provide technical leadership and guidance on mode
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Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
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Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
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Knowledge of the following tools Cucumber Godog or other BDD tools Kubernetes Docker Rest Assured Rest or other REST API testing tools Wiremock Mountebank or other HTTP stubbing tools
Knowledge of the following tools Cucumber Godog or other BDD tools Kubernetes Docker Rest Assured Rest or other REST API testing tools Wiremock Mountebank or other HTTP stubbing tools
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Experience with some of the technologies we make use of: Groovy, Python, AWS Serverless (API Gateway, Lambdas), XML, JSON, Open API, virtualisation in general and especially Docker and its eco system, Git, NoSQL products and concepts (Dynamo, column family, etc.)
Experience with some of the technologies we make use of: Groovy, Python, AWS Serverless (API Gateway, Lambdas), XML, JSON, Open API, virtualisation in general and especially Docker and its eco system, Git, NoSQL products and concepts (Dynamo, column family, etc.)
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Hands-on experience integrating external data sources into internal systems using ETL pipelines and API-driven data exchange.
Hands-on experience integrating external data sources into internal systems using ETL pipelines and API-driven data exchange.
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Build, fine-tune, and evaluate LLM-based Q&A models using frameworks like AWS Bedrock, Langchain, HuggingFace Transformers or OpenAI API.
Build, fine-tune, and evaluate LLM-based Q&A models using frameworks like AWS Bedrock, Langchain, HuggingFace Transformers or OpenAI API.
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4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
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Experience with API design and development for both internal and external use cases
Experience with API design and development for both internal and external use cases
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Technical Architect
Technical Architect
Inspire People
London
£71590 - £85413 per annum + 29% pension + Civil Service benefits
Track record designing and delivering secure cloud solutions using AWS/Azure plus ideally API-driven architecture
Track record designing and delivering secure cloud solutions using AWS/Azure plus ideally API-driven architecture
As our API Integration Specialist, you will support and help to grow our brand universe. * Around 2-3 years in API integration domain
As our API Integration Specialist, you will support and help to grow our brand universe. * Around 2-3 years in API integration domain
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Work closely with the team to develop new features, such as better interpretation layers, enhanced data decoding, and improved API coverage for various blockchain data.
Work closely with the team to develop new features, such as better interpretation layers, enhanced data decoding, and improved API coverage for various blockchain data.
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You may also be asked to support the testing of releases for our Client API and Mobile Application. * API testing - building out automated test coverage of our RESTful Client API * Collaborate with the external contractor QA resource on specific projects (e.g. automating API testing) and as an additional resource when required
You may also be asked to support the testing of releases for our Client API and Mobile Application. * API testing - building out automated test coverage of our RESTful Client API * Collaborate with the external contractor QA resource on specific projects (e.g. automating API testing) and as an additional resource when required
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Location & Working Model: Flexible Remote or hybrid options available depending on location - Employment Type: Permanent - About TxODDS - TxODDS is a premier provider of ultra low-latency, accurate odds data, fast scores, and innovative betting solutions for the global sports betting industry. With offices in London, Chicago, and Belgrade and team members working worldwide we deliver cutting-edge technology and data products that power some of the worlds top sportsbooks. About the Role - Were looking for a Developer to join our Data Acquisition team. This role plays a key part in building and maintaining the systems that power our real-time data delivery. Youll work closely with cross-functional teams to ensure the accuracy, reliability, and speed of the data we provide to our customers. In this role, youll take ownership of key responsibilities that help drive team a
Location & Working Model: Flexible Remote or hybrid options available depending on location - Employment Type: Permanent - About TxODDS - TxODDS is a premier provider of ultra low-latency, accurate odds data, fast scores, and innovative betting solutions for the global sports betting industry. With offices in London, Chicago, and Belgrade and team members working worldwide we deliver cutting-edge technology and data products that power some of the worlds top sportsbooks. About the Role - Were looking for a Developer to join our Data Acquisition team. This role plays a key part in building and maintaining the systems that power our real-time data delivery. Youll work closely with cross-functional teams to ensure the accuracy, reliability, and speed of the data we provide to our customers. In this role, youll take ownership of key responsibilities that help drive team a
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Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
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Support customers in achieving effective and efficient SDK and API integrations with Braze
Support customers in achieving effective and efficient SDK and API integrations with Braze
Skilled in designing and building REST APIs and understanding REST API architecture
Skilled in designing and building REST APIs and understanding REST API architecture
Provide expertise in the planning, constructing and execution of test scripts from the initial stages of the project until the implementation of the product (Web, Mobile, and API)
Provide expertise in the planning, constructing and execution of test scripts from the initial stages of the project until the implementation of the product (Web, Mobile, and API)
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SharePoint CSOM API
SharePoint CSOM API
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Junior Application Security Engineer (Basingstoke, Hybrid 2 days onsite)
Junior Application Security Engineer (Basingstoke, Hybrid 2 days onsite)
Infosum Limited
Basingstoke, Hampshire
Competitive
Familiarity with common security issues (e.g., OWASP Top 10, API security basics).
Familiarity with common security issues (e.g., OWASP Top 10, API security basics).
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Knowledge of REST APIs and tools for testing API endpoints
Knowledge of REST APIs and tools for testing API endpoints
Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
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