201 to 225 of 627 API Integration Jobs in the UK

recognition, document processing, product development and more. You will present your findings to customers alongside sales. Technical integrations: You will work with our product team to assist with the integration of new models and ML-Ops tools into V7. Marketplace Integration: Develop and maintain the integration into major cloud marketplaces so users can more easily set up … short timeframes. You are a skilled multi-tasker and familiar with project management tools like Linear. Who you are: Experience delivering Large Language Model projects with customers, including LLM API integration, up-to-speed knowledge of foundation models, SFT (Supervised Fine-Tuning), prompt engineering, RAG (Retrieval-augmented generation) and/or measuring AI accuracy. Two years + experience More ❯

our team and drive our technology initiatives forward. Job Description As an IT Systems Developer, you will play a crucial role in our technology team, focusing on coding, system integration, and problem-solving. You will be responsible for improving current systems, enhancing architecture functionality, and creating new functions and integrations, as well as developing, maintaining, and integrating both off … and enhance architectural functionality to optimize performance. Create new functions and integrations to meet evolving business requirements. Integrate multiple systems, including using off-the-shelf integrations and creating bespoke API integrations, ensuring seamless functionality and data flow. Work with external suppliers to bring externally developed systems under your management. Propose opportunities for technology-led improvements, including opportunities to exploit … practices. Qualifications Proven experience in software development and coding (languages may include Java, Python, PHP, etc.). Strong problem-solving skills and a logical approach to challenges. Experience with API integrations and working with various software systems. Familiarity with Zoho and Dwelent code is a plus. Excellent communication skills and ability to work collaboratively in a team environment. A More ❯

the core technical skills listed below. You thrive in a collaborative environment, readily offering support and sharing knowledge with your teammates. Core technical skills: C#, .NET, .NET Core Strong API integration skills SQL Server and NoSQL databases Unit testing frameworks Messaging within a microservice architecture Agile development (Scrum experience preferred) Good to have skills: Kafka A modern front More ❯

Python experience building backend systems and data workflows – Working knowledge of SQL and NoSQL, especially Postgres – Familiarity with cloud infrastructure (AWS preferred) and modern deployment patterns – Experience with RESTful API design and integration – Experience building pipelines for large-scale data sets – A collaborative mindset and drive to solve real-world problems at scale Why You’ll Love It More ❯

it happen. Some of the technologies we use, and day-to-day tasks include developing with: Relational databases (PostgreSQL, MySQL, etc.) OpenSearch DynamoDB S3 Event-driven architectures Third-party API integration Access control and user permissions Implementing APIs used by single-page applications WebSockets Infrastructure as code (AWS CDK, Terraform, etc.) Docker AWS IoT What we’re looking More ❯

it happen. Some of the technologies we use, and day-to-day tasks include developing with: Relational databases (PostgreSQL, MySQL, etc.) OpenSearch DynamoDB S3 Event-driven architectures Third-party API integration Access control and user permissions Implementing APIs used by single-page applications WebSockets Infrastructure as code (AWS CDK, Terraform, etc.) Docker AWS IoT What we’re looking More ❯

will be responsible for full lifecycle development across greenfield and existing projects. Essential Skills C# (.NET) - backend and some frontend SQL - data handling and queries RESTful APIs - design and integration SDLC understanding - Agile or similar Unit, system, and integration testing CI/CD pipeline experience Desirable NuGet, Blazor Server, PKI Auth Migrating legacy codebases Developing shared libraries/ More ❯

will be responsible for full lifecycle development across greenfield and existing projects. Essential Skills C# (.NET) - backend and some frontend SQL - data handling and queries RESTful APIs - design and integration SDLC understanding - Agile or similar Unit, system, and integration testing CI/CD pipeline experience Desirable NuGet, Blazor Server, PKI Auth Migrating legacy codebases Developing shared libraries/ More ❯

with the Digital Transformation team to turn new ideas into reality Championing a culture of test-driven development (TDD) and clean, maintainable code Your Skills and Experience: .NET (C#) API development React.js Azure services and cloud based architecture Experience with API integrations, ideally with CRM platforms A TDD mindset and strong software engineering principles Advantegous if you’ve More ❯

with the Digital Transformation team to turn new ideas into reality Championing a culture of test-driven development (TDD) and clean, maintainable code Your Skills and Experience: .NET (C#) API development React.js Azure services and cloud based architecture Experience with API integrations, ideally with CRM platforms A TDD mindset and strong software engineering principles Advantegous if you’ve More ❯

and maintain consistent design principles across the platform Participate in Agile ceremonies including stand-ups, backlog refinement, and retrospectives Evaluate and improve the frontend architecture, including state management and API integrations Help implement real-time frontend/backend communication using WebSockets Extend and optimise the use of Nx for a frontend monorepo setup Leverage Zustand and TanStack Query for … state management libraries (e.g., Zustand) Proficiency in writing clean, testable code with solid test coverage Experience with testing frameworks such as Vitest and Playwright Familiarity with REST or GraphQL API design Ability to write high-quality CSS Independent ownership of deliverables and strong communication skills in a collaborative environment Preferred Qualifications: Experience working on financial risk management software or More ❯

and maintain consistent design principles across the platform Participate in Agile ceremonies including stand-ups, backlog refinement, and retrospectives Evaluate and improve the frontend architecture, including state management and API integrations Help implement real-time frontend/backend communication using WebSockets Extend and optimise the use of Nx for a frontend monorepo setup Leverage Zustand and TanStack Query for … state management libraries (e.g., Zustand) Proficiency in writing clean, testable code with solid test coverage Experience with testing frameworks such as Vitest and Playwright Familiarity with REST or GraphQL API design Ability to write high-quality CSS Independent ownership of deliverables and strong communication skills in a collaborative environment Preferred Qualifications: Experience working on financial risk management software or More ❯

and maintain consistent design principles across the platform Participate in Agile ceremonies including stand-ups, backlog refinement, and retrospectives Evaluate and improve the frontend architecture, including state management and API integrations Help implement real-time frontend/backend communication using WebSockets Extend and optimise the use of Nx for a frontend monorepo setup Leverage Zustand and TanStack Query for … state management libraries (e.g., Zustand) Proficiency in writing clean, testable code with solid test coverage Experience with testing frameworks such as Vitest and Playwright Familiarity with REST or GraphQL API design Ability to write high-quality CSS Independent ownership of deliverables and strong communication skills in a collaborative environment Preferred Qualifications: Experience working on financial risk management software or More ❯

and maintain consistent design principles across the platform Participate in Agile ceremonies including stand-ups, backlog refinement, and retrospectives Evaluate and improve the frontend architecture, including state management and API integrations Help implement real-time frontend/backend communication using WebSockets Extend and optimise the use of Nx for a frontend monorepo setup Leverage Zustand and TanStack Query for … state management libraries (e.g., Zustand) Proficiency in writing clean, testable code with solid test coverage Experience with testing frameworks such as Vitest and Playwright Familiarity with REST or GraphQL API design Ability to write high-quality CSS Independent ownership of deliverables and strong communication skills in a collaborative environment Preferred Qualifications: Experience working on financial risk management software or More ❯

business. The scope of the role is not exclusive to the app & website, they are responsible for a number of custom back office pieces of software and 3rd party API integrations that enable the rest of the business to operate. This also includes working closely with the Cloud Ops Team to blend the use of technology between infrastructure & website. … Extensive working knowledge of TypeScript & JavaScript knowledge. Modern CSS experience is highly desirable. Solid React experience using functions and hooks is essential. Experience with APIs using REST Application/API performance & optimisation knowledge. Experience working in a full stack environment. Knowledge of AWS services and APIs. Desire to work in a fast-paced environment & ability to adapt to fast More ❯

on building and improving internal systems that support day-to-day operations across the business. You’ll develop end-to-end solutions using C#, .NET, JavaScript, SQL Server, and API integrations. Strong communication skills are essential as you’ll work closely with the stakeholders to understand requirements and deliver clean, reliable solutions. Required Skills 2+ years' experience with .NET More ❯

Django or Flask . Deep understanding and practical usage of AWS services : Lambda (serverless functions) DynamoDB (NoSQL DB) RDS (relational DB) AppSync (GraphQL APIs) Experience with RESTful and GraphQL API design and integration. Familiarity with Agile methodologies and practices like TDD , CI/CD , pair programming . Good problem-solving skills and communication abilities. More ❯

databases. The role offers great scope for progression, technical ownership, and creative input. The ideal candidate will bring: Strong experience developing applications in .NET Solid knowledge of SQL and API integrations Comfortable working in Agile environments and writing clean, testable code A passion for continuous learning and technology innovation Experience with JavaScript Exposure to cloud platforms like Azure Package More ❯

methodologies. Experience creating and managing Scrum/Kanban boards, filters, dashboards, and reports. Skilled in Jira upgrades and Atlassian suite management (installation, migration, upgrades, patching). Experience with Jira API integrations. What We're Looking For Excellent communication and collaboration skills. Ability to work independently and proactively identify areas for improvement. Strong attention to detail and problem-solving abilities. More ❯

adversarial testing). Integrate testing into CI/CD pipelines in collaboration with MLOps and DevOps teams. Ensure compliance with AI governance, data privacy, and responsible AI standards. Validate API integrations, including authentication, rate limits, and error handling. Your Profile Proven experience as a Test Lead, preferably in GenAI or LLM-based applications. Strong understanding of LLMs, prompt engineering More ❯

anti-virus, spam and spyware solutions (Gateway and SaaS), malware/security experience Comprehensive understanding of the intelligence lifecycle, information needs, collection, organization, and priority intelligence requirements Comfortable writing API integrations and working with a variety of technologies in a dynamic customer environment - large focus on REST APIs and network connection troubleshooting Strong organizational skills with the ability to More ❯

and implement MLOps frameworks to support the deployment of statistical models as REST APIs. Refactor and optimise R code for production use, with a focus on performance, reproducibility, and API integration. Educate both statisticians and engineering teams on MLOps principles to ensure shared understanding. Working at Ascent At Ascent we promote a healthy work-life balance by offering flexibility More ❯

API Integration Technical Lead Bristol- Hybrid £85,000-£110k + bonus 10-15% About the business: Based in the heart of Bristol this FTSE 100 business work in a fast paced, agile environment. They value diversity, inclusion, and collaboration across all teams. Working in this exciting sector you'll be part of a team that is redefining the … and experiences in their sector through investing in people and technology. The Role: As part of a multi-million pound digital transformation Programme the business is seeking an experienced API Integration Technical Lead as part of a newly created centralise Integration team. As the API Integration technical lead you will manage a team of API engineers in designing, developing, and maintaining robust and scalable APIs, shaping the API architecture, and driving technical direction. API Integration Technical Lead Key Responsibilities: Lead and mentor API engineers. Define and enforce coding standards and best practices. Collaborate with cross-functional teams to define API requirements. Design scalable API architectures. Hands-on coding More ❯

JavaScript/TypeScript API Engineer Contract Length: 6 Months Location: Manchester (1 Day a week in Manchester City Centre Office) Rate: Outside IR35 £350 - £400 per day Immediate Start Join a fast-moving product consultancy delivering high-impact software for a broad mix of clients across a range of sectors. They're now looking for an experienced contractor to … support a critical project focused on API development and complex system integration. The Role: You'll be part of a small, highly cooperative engineering team working on a SaaS platform designed to streamline and automate operational workflows. The focus is on building out and refining backend APIs, integrating third-party services, and improving the overall scalability and reliability of … the system. Tech Stack: TypeScript & JavaScript Node.js with Express n8n (workflow and automation integrations) PostgreSQL Permit.io (RBAC and auth) API best practices (rate limiting, downstream HTTP integrations) GraphQL (mostly migrating from) Day-to-Day Responsibilities: Contribute to backend development and API design using TypeScript Work on system integrations using n8n and other tools Collaborate on migrating from GraphQL More ❯

JavaScript/TypeScript API Engineer Contract Length: 6 Months Location: Manchester (1 Day a week in Manchester City Centre Office) Rate: Outside IR35 £350 - £400 per day *Immediate Start* Join a fast-moving product consultancy delivering high-impact software for a broad mix of clients across a range of sectors. They're now looking for an experienced contractor to … support a critical project focused on API development and complex system integration. The Role: You'll be part of a small, highly cooperative engineering team working on a SaaS platform designed to streamline and automate operational workflows. The focus is on building out and refining backend APIs, integrating third-party services, and improving the overall scalability and reliability of … the system. Tech Stack: TypeScript & JavaScript Node.js with Express n8n (workflow and automation integrations) PostgreSQL Permit.io (RBAC and auth) API best practices (rate limiting, downstream HTTP integrations) GraphQL (mostly migrating from) Day-to-Day Responsibilities: Contribute to backend development and API design using TypeScript Work on system integrations using n8n and other tools Collaborate on migrating from GraphQL More ❯