1 to 25 of 275 API Design Jobs in the UK excluding London

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 ❯

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 ❯

operating from 52 countries. Founded in 1976, HCL is one of India's original IT garage start-ups. For more on HCL, please visit www.hcl.com Job Title: Technical Architect – API Location: Edinburgh, UK Experience Level: 15+ years Mode of Hiring- Permanent Position Job Description- Looking for a Technical Architect that shall define, develop and maintain the Application Programming Interfaces … for specific business functional/technical areas and provide high-level roadmaps for the implementation of the robust API solutions, aligning to a common technical direction ensuring accomplishment of the roadmaps. Key Responsibilities- Design and define API architecture and standards. Collaborate with development teams to implement scalable API solutions. Ensure API security, reliability, and performance. … Establish and enforce best practices for API development. Evaluate and select appropriate technologies and tools. Document architectural decisions and API specifications. Mentor and guide software engineers on API-related topics. Review and improve existing API implementations. Work with stakeholders to gather requirements and align API strategy. Monitor API usage and optimize for scalability and 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 ❯

is welcome; join us and let's build what's next - together! We are seeking a Senior Software Engineer to join our team in Manchester! Your Impact Software Development: Design, implement, and maintain scalable, maintainable, and efficient Python-based applications, focusing on backend and full-stack development. Collaboration & Communication: Work closely with product managers, designers, and other engineers to … familiarity with CI/CD pipelines (e.g., Jenkins, GitLab CI). Testing and Debugging: Experience with testing tools like pytest, unit tests, and debugging skills to quickly resolve issues. API Design: Strong knowledge of RESTful API design and implementation; knowledge of GraphQL is a plus. Security Best Practices: Awareness of security best practices in software development. More ❯

application layer that handles massive IoT data streams, ensures millisecond latency for global supply chains, and scales seamlessly as we grow from millions to billions of tracking events. Think API performance and data processing efficiency meets cutting-edge innovation. You'll be designing highly performant and distributed services that ingest and process location and temperature data from every corner … advanced smart shipping labels. Our breakthrough technology is already transforming how companies track and manage their shipments globally, and we're just getting started. Responsibilities Core Service Architecture & Scale Design, develop, and maintain highly scalable back-end services that handle millions of concurrent data ingestion events and user requests. Architect and optimize data processing pipelines and application logic for … level traffic peaks. Performance & Reliability Build fault-tolerant, self-healing application services with comprehensive unit, integration, and performance testing. Implement advanced security best practices within the application code and API gateways for handling sensitive logistics and tracking data. Optimize service performance and database queries to achieve low-latency responses under peak loads during high-traffic periods (think Black Friday More ❯

application layer that handles massive IoT data streams, ensures millisecond latency for global supply chains, and scales seamlessly as we grow from millions to billions of tracking events. Think API performance and data processing efficiency meets cutting-edge innovation. You'll be designing highly performant and distributed services that ingest and process location and temperature data from every corner … advanced smart shipping labels. Our breakthrough technology is already transforming how companies track and manage their shipments globally, and we're just getting started. Responsibilities Core Service Architecture & Scale Design, develop, and maintain highly scalable back-end services that handle millions of concurrent data ingestion events and user requests. Architect and optimize data processing pipelines and application logic for … level traffic peaks. Performance & Reliability Build fault-tolerant, self-healing application services with comprehensive unit, integration, and performance testing. Implement advanced security best practices within the application code and API gateways for handling sensitive logistics and tracking data. Optimize service performance and database queries to achieve low-latency responses under peak loads during high-traffic periods (think Black Friday More ❯

application layer that handles massive IoT data streams, ensures millisecond latency for global supply chains, and scales seamlessly as we grow from millions to billions of tracking events. Think API performance and data processing efficiency meets cutting-edge innovation. You'll be designing highly performant and distributed services that ingest and process location and temperature data from every corner … advanced smart shipping labels. Our breakthrough technology is already transforming how companies track and manage their shipments globally, and we're just getting started. Responsibilities Core Service Architecture & Scale Design, develop, and maintain highly scalable back-end services that handle millions of concurrent data ingestion events and user requests. Architect and optimize data processing pipelines and application logic for … level traffic peaks. Performance & Reliability Build fault-tolerant, self-healing application services with comprehensive unit, integration, and performance testing. Implement advanced security best practices within the application code and API gateways for handling sensitive logistics and tracking data. Optimize service performance and database queries to achieve low-latency responses under peak loads during high-traffic periods (think Black Friday 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 ❯

Altair is an industry-recognized consulting firm and a trusted partner in digital transformation. Founded in 2015, our services span Assessment and Strategy, Technology Implementation, and Managed Services in API Management and Integration, Data Management, Digital Application Development, and Data Science and AI. We are proud to exceed industry standards for project success, thanks to our expert focus on … a six month contract-to-hire role located on-site in Reading, PA. Only applicants able to commute or willing to relocate will be considered. Key Responsibilities Lead the design, development, and deployment of APIs using Apigee Edge, Apigee X, and Apigee Hybrid , ensuring alignment with enterprise architecture standards. Architect, install, and manage the Apigee Hybrid runtime on Kubernetes … GKE, EKS, or OpenShift) , including control plane integration, networking, and security configurations. Drive capacity planning and infrastructure sizing for Apigee Hybrid clusters based on projected API traffic, availability zones, and IP/CIDR allocations. Configure and manage API policies for traffic management, transformation, caching, and advanced security (e.g., OAuth2, JWT, mTLS, threat protection). Implement and enforce API 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 ❯

between development and operations by automating workflows, optimizing CI/CD pipelines, and ensuring reliable, scalable, and secure software delivery. This role requires a deep understanding of cloud infrastructure, API management, and continuous integration and deployment practices. Candidate should be SC Cleared/SC Eligible Responsibilities Build, deploy, and monitor solutions using AWS services such as Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, and S3. Integrate APIs into CI/CD pipelines using Azure DevOps and GitHub workflows. Design, develop, and manage applications tailored to business requirements. Execute and manage the end-to-end application lifecycle using Apigee Edge and X-API strategy. Perform API strategy execution, provide technical support, and generate insights through … pipelines. Solid understanding of build and deployment methodologies for distributed systems. Experience with enterprise-grade web applications and system integration. Strong knowledge of the Apigee platform or any APM (API Management) platform and its components. Ability to generate custom analytical reports for API consumption and error tracking. Familiarity with API security and access control mechanisms (OAuth, API More ❯

between development and operations by automating workflows, optimizing CI/CD pipelines, and ensuring reliable, scalable, and secure software delivery. This role requires a deep understanding of cloud infrastructure, API management, and continuous integration and deployment practices. Candidate should be SC Cleared/SC Eligible Responsibilities Build, deploy, and monitor solutions using AWS services such as Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, and S3. Integrate APIs into CI/CD pipelines using Azure DevOps and GitHub workflows. Design, develop, and manage applications tailored to business requirements. Execute and manage the end-to-end application lifecycle using Apigee Edge and X-API strategy. Perform API strategy execution, provide technical support, and generate insights through … pipelines. Solid understanding of build and deployment methodologies for distributed systems. Experience with enterprise-grade web applications and system integration. Strong knowledge of the Apigee platform or any APM (API Management) platform and its components. Ability to generate custom analytical reports for API consumption and error tracking. Familiarity with API security and access control mechanisms (OAuth, API More ❯

between development and operations by automating workflows, optimizing CI/CD pipelines, and ensuring reliable, scalable, and secure software delivery. This role requires a deep understanding of cloud infrastructure, API management, and continuous integration and deployment practices. Candidate should be SC Cleared/SC Eligible Responsibilities Build, deploy, and monitor solutions using AWS services such as Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, and S3. Integrate APIs into CI/CD pipelines using Azure DevOps and GitHub workflows. Design, develop, and manage applications tailored to business requirements. Execute and manage the end-to-end application lifecycle using Apigee Edge and X-API strategy. Perform API strategy execution, provide technical support, and generate insights through … pipelines. Solid understanding of build and deployment methodologies for distributed systems. Experience with enterprise-grade web applications and system integration. Strong knowledge of the Apigee platform or any APM (API Management) platform and its components. Ability to generate custom analytical reports for API consumption and error tracking. Familiarity with API security and access control mechanisms (OAuth, API More ❯

If you are based in either of these locations, we do offer a hybrid working model. We’re seeking a senior technical leader to own end-to-end solution design across our new Core Services and our existing products, while supporting new ventures. You’ll translate business outcomes into scalable, secure, and operable designs for a modular, containerised, microservices … cloud, multi-ledger environment. You’ll partner closely with product, engineering leads, DevOps/SRE, and commercial stakeholders to de-risk delivery and accelerate value. Key Responsibilities: Platform & Solution Design Define target architectures, service contracts, data flows, and non-functional requirements across Core Services and product squads. Produce ADRs, reference designs, and golden paths for APIs, events, and data. … Guide engineers through discovery → design → build → rollout for complex initiatives. Technical Stewardship Champion multi-tenant patterns, API-first design, and stateless, horizontally scalable services. Ensure smooth CI/CD, observability, and operability in partnership with DevOps/SRE. Promote performance, cost, and reliability trade-offs with clear rationale. Security, Reliability & Compliance Embed security-by-design (mTLS More ❯

If you are based in either of these locations, we do offer a hybrid working model. We’re seeking a senior technical leader to own end-to-end solution design across our new Core Services and our existing products, while supporting new ventures. You’ll translate business outcomes into scalable, secure, and operable designs for a modular, containerised, microservices … cloud, multi-ledger environment. You’ll partner closely with product, engineering leads, DevOps/SRE, and commercial stakeholders to de-risk delivery and accelerate value. Key Responsibilities: Platform & Solution Design Define target architectures, service contracts, data flows, and non-functional requirements across Core Services and product squads. Produce ADRs, reference designs, and golden paths for APIs, events, and data. … Guide engineers through discovery → design → build → rollout for complex initiatives. Technical Stewardship Champion multi-tenant patterns, API-first design, and stateless, horizontally scalable services. Ensure smooth CI/CD, observability, and operability in partnership with DevOps/SRE. Promote performance, cost, and reliability trade-offs with clear rationale. Security, Reliability & Compliance Embed security-by-design (mTLS More ❯

If you are based in either of these locations, we do offer a hybrid working model. We’re seeking a senior technical leader to own end-to-end solution design across our new Core Services and our existing products, while supporting new ventures. You’ll translate business outcomes into scalable, secure, and operable designs for a modular, containerised, microservices … cloud, multi-ledger environment. You’ll partner closely with product, engineering leads, DevOps/SRE, and commercial stakeholders to de-risk delivery and accelerate value. Key Responsibilities: Platform & Solution Design Define target architectures, service contracts, data flows, and non-functional requirements across Core Services and product squads. Produce ADRs, reference designs, and golden paths for APIs, events, and data. … Guide engineers through discovery → design → build → rollout for complex initiatives. Technical Stewardship Champion multi-tenant patterns, API-first design, and stateless, horizontally scalable services. Ensure smooth CI/CD, observability, and operability in partnership with DevOps/SRE. Promote performance, cost, and reliability trade-offs with clear rationale. Security, Reliability & Compliance Embed security-by-design (mTLS 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 ❯

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 ❯

Software Engineer (API Development/Backend Node.js, C#) Birmingham, West Midlands (Hybrid 1 day onsite a week) £50-55k + Benefits Were partnering with a leading enterprise software house in Birmingham that is expanding its engineering team. Theyre looking for a Software Engineer with strong API and backend development experience to work on complex, high-performing systems … and developing robust APIs that power enterprise software products. Youll 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 ❯

POWWR are looking for an experienced Technical Lead to join our UK engineering team and help drive the design, development, and delivery of POWWR’s SaaS energy marketplace platform. In this hands-on leadership role, you’ll guide a team of engineers spanning front-end, back-end, and data disciplines, ensuring architectural integrity, engineering excellence, and continuous improvement. You … ensuring scalability, maintainability, and alignment with POWWR’s platform strategy and product vision. Lead the development of high-performance web applications using Angular, .NET, and Azure services. Oversee the design and evolution of robust API layers (GraphQL and REST), ensuring consistency, discoverability, and strong contract boundaries across services. Champion DevOps culture by embedding CI/CD pipelines, automation … team development. Drive engineering quality through code reviews, automated testing, and test-driven development (TDD) . Contribute to cross-team technical initiatives such as shared libraries, security standards, and design system evolution. Participate in agile planning, sprint reviews, and retrospectives , fostering collaboration and accountability. Ensure compliance with ISO 27001 , security best practices, and regulatory standards (e.g., GDPR). Contribute More ❯