1 to 25 of 142 API Design Jobs in the UK

Senior API Engineer - AI Integration Team Who are we? At Bright, we've engineered cutting-edge software for accounting, payroll, tax, and practice management. We've assembled a team of top talent and stand ready to lead the industry with our superior software solutions and unparalleled customer support. We're brilliant people creating brilliant software! Join us in our … payroll, accounts and HR practices. We take the headache out of business management and provide cost effective, real solutions to accountants and business owners. The Role: As a Senior API Engineer at Bright, you'll be building API infrastructure that enables our product, third party integrations, our users and AI services to interact with our established product portfolio. … systems that automate end-to-end accounting workflows from document processing through to statutory filing to make a real impact on tens of thousands of our customers. You'll design and implement the API infrastructure that enables our product, third party integrations, our users and AI services to interact with our established product portfolio. Working with autonomy and More ❯

Staff Engineer – API Platforms About the Role We’re looking for an experienced and forward-thinking Staff Engineer (APIs) to shape the future of our integration and connectivity ecosystem. You’ll lead the evolution of our API strategy, standards, and platform enablement—helping teams design, deliver, and scale modern, secure, and maintainable APIs. This role is ideal … for someone who enjoys defining patterns that others build upon. You’ll provide hands-on technical leadership, guide architectural decisions, and drive the adoption of best practices in API lifecycle management, governance, and developer experience. Working across product, platform, and architecture teams, you’ll ensure that APIs form a reliable and reusable foundation for the organisation’s digital platforms. … What You’ll Do Technical Strategy & Leadership Define and evolve the organisation’s API vision, including standards for design, documentation, versioning, security, and lifecycle management. Establish reusable API design patterns and promote consistency across distributed teams. Drive adoption of API gateways, management tools, and developer portals (e.g., Apigee, Kong, Azure API Management). Ensure More ❯

API Engineer Who are we? At Bright, we've engineered cutting-edge software for accounting, payroll, tax, and practice management. We've assembled a team of top talent and stand ready to lead the industry with our superior software solutions and unparalleled customer support. We're brilliant people creating brilliant software! Join us in our mission to create brilliant … their payroll, accounts and HR practices. We take the headache out of business management and provide cost effective, real solutions to accountants and business owners. The Role: As an API Engineer at Bright, you'll be building API infrastructure that enables our product, third party integrations, our users and AI services to interact with our established product portfolio. … systems that automate end-to-end accounting workflows from document processing through to statutory filing to make a real impact on tens of thousands of our customers. You'll design and implement the API infrastructure that enables our product, third party integrations, our users and AI services to interact with our established product portfolio. Working with autonomy and More ❯

Solution Architect - Client-facing | TypeScript | API Design | Hybrid (2 Days Onsite in Central London) | £105,000-£110,000 + 15% Discretionary Bonus Method Resourcing is thrilled to be partnering with a global leader in the travel industry who are hiring a Client-facing Solution Architect to join a high-performing architectural team. This is a brand-new role … role that balances strong software knowledge with excellent stakeholder management and communication. What you'll be doing: Lead client-facing solution architecture discussions - mapping technical needs to platform capabilities Design and communicate system architecture diagrams, data flows, and API integrations Build prototypes and proof-of-concepts to test ideas and drive alignment Translate complex requirements into clear deliverables … for both technical and non-technical audiences Collaborate closely with internal engineering and product teams to ensure smooth handover and scalable design Skills and experience we are looking for: Strong software development background (ideally TypeScript and Node) Hands-on experience in solution architecture and API design Ability to build and communicate technical diagrams, flows, and documentation Strong More ❯

require an experienced Senior Software Engineer to lead the architecture, development and maintenance of a cross-platform Software Development Kit (SDK). The successful Senior Software Engineer will also design intuitive Graphical User Interfaces (GUIs) and integrate advanced third-party hardware drivers (USB3, CoaXPress, CameraLink). This is a senior technical role combining strategic architectural input with hands-on … Work with high-performance imaging hardware and advanced driver integrations. Attractive Package - Competitive salary, benefits, and genuine opportunities for professional growth. The Role SDK Development & Architecture Lead the architecture, design, and implementation of an SDK for internal and external developers/customers. Establish coding standards, API design guidelines, and best practices to ensure SDK usability and maintainability. … enable seamless hardware communication. Troubleshoot and optimize performance for high-throughput data interfaces. Collaborate with hardware vendors to ensure driver compatibility and long-term support. Graphical User Interface (GUI) Design & Development Design and develop intuitive basic GUIs that integrate seamlessly with the SDK for R&D debug, production QC and customer demo. Collaborate with the product teams to More ❯

require an experienced Senior Software Engineer to lead the architecture, development and maintenance of a cross-platform Software Development Kit (SDK). The successful Senior Software Engineer will also design intuitive Graphical User Interfaces (GUIs) and integrate advanced third-party hardware drivers (USB3, CoaXPress, CameraLink). This is a senior technical role combining strategic architectural input with hands-on … Work with high-performance imaging hardware and advanced driver integrations. Attractive Package - Competitive salary, benefits, and genuine opportunities for professional growth. The Role SDK Development & Architecture Lead the architecture, design, and implementation of an SDK for internal and external developers/customers. Establish coding standards, API design guidelines, and best practices to ensure SDK usability and maintainability. … enable seamless hardware communication. Troubleshoot and optimize performance for high-throughput data interfaces. Collaborate with hardware vendors to ensure driver compatibility and long-term support. Graphical User Interface (GUI) Design & Development Design and develop intuitive basic GUIs that integrate seamlessly with the SDK for R&D debug, production QC and customer demo. Collaborate with the product teams to More ❯

Solutions Architect – SC Cleared – Bristol – Contract Our client is looking to recruit an experienced Leader and Design Authority to fulfil the System Design Authority (SDA) role for a key Project. The Solutions Architect should bring leadership and governance to support the solution's development and ensure the design aligns with the strategic vision. The Solutions Architect will … in the disciplines involved in full lifecycle software and systems Engineering. In particular, you should have good experience in systems integration, with a strong emphasis on software-led integration, API design and implementation, and secure interoperability, alongside basic networking skills. What you will do: The Solutions Architect will be responsible for the end-to-end design and … implementation of a key software system. This will include analysis and design, assisting with and governing software development and hosting, and achieving successful IT health checks, testing, and deployment. About You: As an experienced Solutions Architect, you will have an outstanding range of knowledge and experience in integrating systems containing electronic, electrical, and mechanical components and sub-systems. Specific More ❯

Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. Our client is a dynamic and rapidly growing energy supplier based in Oxfordshire, committed to driving business success through smart, reliable energy solutions. Our client challenges the existing marketplace with a tech-driven, customer-focused approach and foster a culture … designing cutting-edge integrations, delivering high-quality solutions, and want to work in a company where your expertise is valued and supportedthis is the role for you. Key Responsibilities: Design, develop, and maintain API integrations between internal systems and external SaaS platforms. Collaborate with product, data, and engineering teams to identify integration requirements and deliver robust solutions. Monitor … and troubleshoot integration workflows, ensuring data consistency across platforms. Translate business requirements into technical specifications for system connectivity. Build and maintain API documentation, providing guidance on integration best practices. Ensure all integrations meet compliance, security, and performance standards. Work closely with SaaS vendors and partners to coordinate technical efforts. Key Requirements: Essential: Strong expertise in digital engineering, CMS design More ❯

on engineer who enjoys leading by example , thrives in agile environments , and is passionate about shaping engineering best practice while still contributing to the codebase. Key Responsibilities Lead the design, development, and testingof secure, scalable systems using Java with modern front-end frameworks (e.g., React) Architect and maintainAPIs, data pipelines, and cloud-native solutions(AWS, Azure, private cloud) Drive … Skills & Experience Deep expertise in Java, with strong full-stack engineering skills Proven experienceleading teams or projectsat a senior/principal level Strong knowledge ofsystem architecture, cloud solutions, and API design Familiarity withDevOps tools and automation(CI/CD, containers, IaC) Track record of deliveringsecure, production-grade systemsin agile teams Excellent stakeholder engagement, influencing, and communication skills Desirable … you. Qualifications Deep expertise in Java, with strong full-stack engineering skills Proven experienceleading teams or projectsat a senior/principal level Strong knowledge ofsystem architecture, cloud solutions, and API design Familiarity withDevOps tools and automation(CI/CD, containers, IaC) Why Is This a Great Opportunity Flexitime 37.5 hrs/week structured your way + remote options More ❯

Overview: We are seeking a technically proficient Data Analyst to join our IT Department. This role will focus on API design and systems integrations , playing a vital part in enabling data-driven decision-making and ensuring seamless data exchange across internal and external platforms. Key Responsibilities: Design, document, and maintain APIs to facilitate secure and efficient data … BI, Azure Foundry, and Fabric . Ensure data quality, compliance, and governance across all integrations. Support automation efforts by embedding APIs into existing workflows. Work closely with vendors to design solutions aligned with architectural standards and best practices. Key Skills & Experience: Proven experience in a Data Analyst or similar technical role. Strong hands-on experience with RESTful API design , documentation (Swagger/OpenAPI), and testing tools (e.g. Postman). Proficiency in SQL and scripting languages such as Python or R . Solid understanding of data modelling, ETL processes , and system integration . Experience working with Azure and Microsoft data tools including Power BI , Azure Foundry , and Fabric . Excellent communication skills and ability to engage effectively More ❯

responsibilities Build, deploy, and monitor solutions using AWS services (Lambda, APIGateway, CloudWatch, ECS, ECR, Dynamo, S3 etc.) Integrate APIs into CI/CD pipelines using Azure DevOps, Github workflows Design, deploy, and manage applications tailored to business needs, whilecustomizing platforms and overseeing the full API lifecycle using Apigee Edge and X.Drive API strategy execution, provide technical support … integrations and documentation. Key skills for this role Security & Compliance:o Implement and enforce security best practices across the platform, includingsecure coding, dependency management, and vulnerability scanning.o Ensure API security and access control using OAuth, API keys, JWT, and othermechanisms.o Monitor and remediate security vulnerabilities in third-party packages andlibraries.o Collaborate with security teams to align platform … Automate upgrade workflows using CI/CD pipelines and infrastructure-as-code tools. Infrastructure & DevOps:o Hands-on experience with Terraform and Ansible for infrastructureprovisioning and configuration management.o Design and manage Azure DevOps CI/CD pipelines for secure and efficientsoftware delivery.o Deploy microservices using AWS ECS, ECR, and Fargate, ensuring secure andscalable architecture. Development & Containerization:o More ❯

professional services organisation is looking for a technically proficient Data Analyst to join the IT Department within the Strategy & Architecture Team. This role will have a strong focus on API design and integrations between systems. This role is critical in enabling data-driven decision-making and ensuring seamless data exchange across internal systems and external platforms. Key Responsibilities … Analyse and interpret complex datasets to support IT operations and strategic initiatives. Design, document, and maintain APIs that facilitate secure and efficient integration of data between systems. Create data dictionaries that describe data structures, elements, their meanings, and relationships within a dataset or database. Create Business Glossary and describe business terms, and their definitions, ensuring they are consistent across … fields. Essential Requirements Demonstrated experience in data analysis within an IT or technical environment. Strong proficiency in SQL and Scripting languages including Python or R. Practical experience with RESTful API design, documentation (eg Swagger/OpenAPI), and testing tools (eg Postman). Working knowledge of cloud platforms (primarily Azure) and associated data services. Strong understanding of data modelling More ❯

Technology Team committed to delivering strategic technology decisions, innovative solution designs, and maintaining architecture information across the organisation. Our architecture team plays a crucial role in the assurance and design of key products, working collaboratively with multiple squads responsible for product development and liaising with key business stakeholders to ensure designs meet their needs. Responsibilities We are seeking a … This role involves shaping the strategic direction for easyJet Holidays' customer technology architecture and documenting our customer technology landscape. You will also participate in our Architecture Guild, which aligns design decisions with technology patterns, standards, and the wider enterprise technology strategy. What you'll be doing: As a Solutions Architect, you will lead the technology strategy for end-to … Customer team in technology discovery for new business ideas, providing conceptual solutions, options analysis, and guidance to realise our customer vision. Your role includes producing high-quality, comprehensive solution design artefacts that demonstrate a balance of different functional and non-functional drivers and requirements. You will provide architectural guidance to product teams and third-party vendors to ensure the More ❯

deployment. Manage infrastructure, monitor performance, and collaborate across teams to maintain scalable, secure, and resilient systems. Key role and responsibilities Build, deploy, and monitor solutions using AWS services (Lambda, API Gateway, CloudWatch, ECS, ECR, Dynamo, S3 etc.) Integrate APIs into CI/CD pipelines using Azure DevOps, Github workflows Design, deploy, and manage applications tailored to business needs … while customizing platforms and overseeing the full API lifecycle using Apigee Edge and X. Drive API strategy execution, provide technical support, and generate insights through analytics to enhance integrations and documentation. Key skills for this role Hands-on experience with infrastructure-as-code tools (e.g. Terraform, Ansible) is a must Proficiency with AWS cloud tools and architecture, including … based web applications Strong analytical and problem-solving skills Good knowledge of the Apigee platform or any APIM platform and its components Ability to generate custom analytics reports for API consumption and errors Implementation of API security and access control (OAuth, API keys, JWT, etc.) Familiarity with API design patterns, best practices, and performance optimization More ❯

deployment. Manage infrastructure, monitor performance,and collaborate across teams to maintain scalable, secure, and resilient systems. Key role and responsibilities Build, deploy, and monitor solutions using AWS services (Lambda, API Gateway, CloudWatch, ECS, ECR, Dynamo, S3 etc.) Integrate APIs into CI/CD pipelines using Azure DevOps, Github workflows Design, deploy, and manage applications tailored to business needs … while customizing platforms and overseeing the full API lifecycle using Apigee Edge and X. Drive API strategy execution, provide technical support, and generate insights through analytics to enhance integrations and documentation. Key skills for this role Hands-on experience with infrastructure-as-code tools (e.g. Terraform, Ansible) is a must Proficiency with AWS cloud tools and architecture, including … based web applications Strong analytical and problem-solving skills Good knowledge of the Apigee platform or any APIM platform and its components Ability to generate custom analytics reports for API consumption and errors Implementation of API security and access control (OAuth, API keys, JWT, etc.) Familiarity with API design patterns, best practices, and performance optimization More ❯

Senior API Technical Consultant (GraphQL Specialist) Design and build next generation of high-scale SaaS platforms. We're looking for a senior/lead engineering consultant with deep expertise in GraphQL to take a leading role in developing our robust TypeScript/Node.js backend. You will be instrumental in shaping our technical direction, driving the evolution of our … APIs, ensuring our services are resilient, scalable and secure within a cutting-edge, cloud-native environment (Helm, Kubernetes). The Deliverables Design and build sophisticated, scalable GraphQL APIs and backend services using TypeScript and Node.js. Lead the design and evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. Champion best … team to guide process improvements and make key architectural decisions. Experience Extensive production experience architecting and delivering complex applications with TypeScript and Node.js . Expert level GraphQL , including advanced API design, schema evolution, performance optimisation. Strong automated testing frameworks like Vitest and Playwright . Proficiency with modern DevOps tooling and cloud-native architecture, including Docker , Helm , Kubernetes . More ❯

award winning B2B SaaS platform that is entering the Belfast market with ambitious plans to scale our team rapidly, with over 100 hires planned through 2026. Primary Job Responsibilities Design & build future proof solutions to support growing business needs while thoroughly considering the system impact Mentor and lead our engineers to develop solutions from idea to implementation by estimating … of developing in C#, Java or other OO programming languages Minimum 7+ years of hands on experience programming on the .NET platform using C#, including ASP.NET (MVC) Expertise with Design Patterns, refactoring, OO Design and related areas Experience in Web API design principles and best practices Comfortable with database design and development Hands on experience More ❯

Software Engineer (API Development/Backend – Node.js, C#) Birmingham, West Midlands (Hybrid – 1 day onsite a week)£50-55k + BenefitsWe’re partnering with a leading enterprise software house in Birmingham that is expanding its engineering team. They’re looking for a Software Engineer with strong API and backend development experience to work on complex, high-performing … developing robust APIs that power enterprise software products. You’ll work primarily with Node.js and C#, collaborating with cross-functional teams to deliver well-architected, maintainable solutions. Key Responsibilities Design, build, and maintain RESTful APIs and backend systems. Develop high-quality, scalable code using Node.js and C#. Collaborate with product and engineering teams to define technical solutions. Ensure best … CD. Optimise performance, security, and maintainability of backend services. Support occasional front-end integration using React (desirable, not essential). Skills & Experience 4+ years’ commercial experience in backend/API development. Strong expertise in Node.js and C#. Solid understanding of REST API design and implementation. Experience with cloud computing and CI/CD pipelines. Knowledge of automated More ❯

# Mid-Level Full-Stack Engineer (React + Go)Remote - EMEA/EngineeringThe Tyk API Management platform is helping to drive the connected world and power new products and services. We're changing the way that organisations connect any number of their systems and services.Whether internal, external, public or highly encrypted systems, Tyk helps businesses drive value across the … telecoms, healthcare, or media industries (to name just a few!)If you've banked online, used an app to check the news, or perhaps even driven a connected car, API's, and by extension, Tyk, make that possible. Founded in 2015 with offices in London - UK, London - Ontario, Atlanta and Singapore, we have many thousands of users of our … a varied user base hailing from every continent - even Antarctica. Our MissionTyk is on a mission to connect every system in the world. We've started by building an API Management platform. Total flexibility, default remote, radical responsibility If this sounds like an environment that you believe could work for you then read on to find out more. The More ❯

ll join a high-performing cloud team supporting enterprise clients in designing and delivering secure, scalable integrations on AWS. You'll work across modern architectures, leveraging containerisation, event-driven design, and API-first principles to solve complex integration challenges. Key Responsibilities Architect and implement AWS integrations using EKS (Kubernetes) and Lambda . Design and manage secure REST …/GraphQL APIs via API Gateway , including authentication, throttling, and schema validation. Integrate with enterprise platforms such as SAP, Salesforce, Oracle ERP for both batch and real-time data flows. Build event-driven messaging architectures using SQS, SNS , and Step Functions . Apply best practices in Kubernetes and API security , including TLS, KMS, RBAC , and service-to-service … X-Ray , and container-level logging and alerting tools. What We're Looking For 5+ years of AWS integration experience, including secure deployments on Lambda and EKS . Strong API design and security expertise (OpenAPI, OAuth2, JWT). Proven integration experience with SAP, Salesforce, Oracle . Proficiency in Flask, FastAPI , or similar frameworks in cloud-native environments. Experience More ❯

up-within a startup-style venture backed by the strength and stability of an established business. Key Responsibilities End-to-end development of high-quality, scalable SaaS platforms from design through deployment and maintenance. Architect and implement robust backend services primarily using Python and PostgreSQL. Develop and maintain responsive, performant front-end applications with TypeScript and modern frameworks (e.g. … development productivity and platform capabilities. Provide technical mentorship and leadership to development teams, fostering best practices in coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast of emerging technologies and industry … Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimisation, and maintenance. AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding and practical application of More ❯

Senior API/PHP Developer – Fully Remote (UK) – £80,000+ Venchr is partnering with a fast-growing SaaS company that’s redefining financial management in the luxury and yachting sector. Their platform unites accounting, payments, FX, and project management into a single, powerful ecosystem — helping clients worldwide streamline complex operations with ease. They’re now seeking a Lead PHP … Developer with a strong focus on API architecture and backend systems to join their fully remote UK-based engineering team. In this role, you’ll take ownership of designing, developing, and optimizing APIs that power mission-critical services. You’ll collaborate closely with product, DevOps, and frontend teams to ensure the platform remains scalable, secure, and future-proof. Beyond … hands-on coding, you’ll play a key part in setting technical standards, mentoring other engineers, and driving forward the API and integration strategy that underpins the company’s growth. What You’ll Bring Proven experience leading backend/API development using PHP and Laravel Expertise in RESTful API design, versioning, authentication, and performance optimization Strong More ❯

Senior API/PHP Developer – Fully Remote (UK) – £80,000+ Venchr is partnering with a fast-growing SaaS company that’s redefining financial management in the luxury and yachting sector. Their platform unites accounting, payments, FX, and project management into a single, powerful ecosystem — helping clients worldwide streamline complex operations with ease. They’re now seeking a Lead PHP … Developer with a strong focus on API architecture and backend systems to join their fully remote UK-based engineering team. In this role, you’ll take ownership of designing, developing, and optimizing APIs that power mission-critical services. You’ll collaborate closely with product, DevOps, and frontend teams to ensure the platform remains scalable, secure, and future-proof. Beyond … hands-on coding, you’ll play a key part in setting technical standards, mentoring other engineers, and driving forward the API and integration strategy that underpins the company’s growth. What You’ll Bring Proven experience leading backend/API development using PHP and Laravel Expertise in RESTful API design, versioning, authentication, and performance optimization Strong More ❯

Senior API/PHP Developer – Fully Remote (UK) – £80,000+ Venchr is partnering with a fast-growing SaaS company that’s redefining financial management in the luxury and yachting sector. Their platform unites accounting, payments, FX, and project management into a single, powerful ecosystem — helping clients worldwide streamline complex operations with ease. They’re now seeking a Lead PHP … Developer with a strong focus on API architecture and backend systems to join their fully remote UK-based engineering team. In this role, you’ll take ownership of designing, developing, and optimizing APIs that power mission-critical services. You’ll collaborate closely with product, DevOps, and frontend teams to ensure the platform remains scalable, secure, and future-proof. Beyond … hands-on coding, you’ll play a key part in setting technical standards, mentoring other engineers, and driving forward the API and integration strategy that underpins the company’s growth. What You’ll Bring Proven experience leading backend/API development using PHP and Laravel Expertise in RESTful API design, versioning, authentication, and performance optimization Strong More ❯

Senior API/PHP Developer – Fully Remote (UK) – £80,000+ Venchr is partnering with a fast-growing SaaS company that’s redefining financial management in the luxury and yachting sector. Their platform unites accounting, payments, FX, and project management into a single, powerful ecosystem — helping clients worldwide streamline complex operations with ease. They’re now seeking a Lead PHP … Developer with a strong focus on API architecture and backend systems to join their fully remote UK-based engineering team. In this role, you’ll take ownership of designing, developing, and optimizing APIs that power mission-critical services. You’ll collaborate closely with product, DevOps, and frontend teams to ensure the platform remains scalable, secure, and future-proof. Beyond … hands-on coding, you’ll play a key part in setting technical standards, mentoring other engineers, and driving forward the API and integration strategy that underpins the company’s growth. What You’ll Bring Proven experience leading backend/API development using PHP and Laravel Expertise in RESTful API design, versioning, authentication, and performance optimization Strong More ❯