1 to 25 of 189 API Design Jobs

client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. - Salesforce & ReactNative - Salesforce, ReactNative (Web), Java, TDD, RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, SonarQube, Veracode, Jira, Confluence - Salesforce BA, ReactNative (Web), Java, TDD, RESTful … API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, Jira, Confluence - API Developer - Java, TDD, RESTful API design & build, OAS/YAML, GitLab, CI/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply now or contact ...

London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. Salesforce & ReactNative - Salesforce and .or ReactNative (Web), Java, TDD, RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, SonarQube, Veracode, Jira, Confluence Open Stack BA - Salesforce, ReactNative (Web), Java … RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, Jira, Confluence API Developer - Java, TDD, RESTful API design & build, OAS/YAML, GitLab, CI/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial services. This … development tools (e.g. Claude Code, GitHub Copilot, LLMs) Experience with MCP, AI automation, or agentic AI systems Strong understanding of microservices and API design Java/Microservices/API design/LLMs/AI/Claude Code/Copilot ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial services. This … development tools (e.g. Claude Code, GitHub Copilot, LLMs) Experience with MCP, AI automation, or agentic AI systems Strong understanding of microservices and API design Java/Microservices/API design/LLMs/AI/Claude Code/Copilot ...

possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

manage the flow of technology change proposals and ensure all documentation is complete, accurate, and processed efficiently. Collaborate closely with project teams during the design stage and support build and deployment activities where appropriate. Contribute to Request for Proposal (RFP) documentation and assess supplier responses. Work collaboratively with Technology … Technical Architect or similar technical leadership role, ideally with a track record of delivering complex projects. Strong understanding of software architecture principles, design patterns, and industry best practices. Core Technical SkillsA broad technical foundation is essential. Key technologies include: Microsoft Azure - Azure App Services, Azure Functions, Azure DevOps, Azure ...

embark on a journey along with an organization to becoming the best tech, modern luxury, and sustainable mobility company in the world. The Enterprise API portfolio is here to enable seamless new customer experiences across all our iconic brands. We are scaling our API operations and looking … teams and provide technical leadership in designing evolvable systems that can scale to meet our customer needs. Help guide development using JLR API patterns and practices. As part of the team, you will collaboratively be designing, implementing, and run API technology solutions on our platform. Drive the strategic ...

Senior Azure API Engineer Outside IR35 | £(Apply online only)/day | Remote/Hybrid UK The Role Lead the design and delivery of enterprise-grade API solutions on Azure. You'll architect scalable, secure API platforms that unlock business value from data and drive monetization opportunities. … Platform team, you'll build the critical integration layer connecting internal teams and external customers to consistent, reliable data services. What You'll Do Design and operationalise a lean, zero-trust API platform on Azure API Management Architect microservices and event-driven integration flows at scale Define ...

modernise identity, authentication, authorization, and lifecycle management across the enterprise. We're looking for a Senior IAM Application Developer skilled in cloud-native API development, identity orchestration, Pub/Sub event processing, and Terraform automation. This role sits at the heart of building scalable identity services across Google Cloud … Platform (GCP). Responsibilities: Design & develop identity lifecycle orchestration flows (provisioning, de-provisioning, adaptive authentication, etc.) Build secure RESTful APIs and backend microservices for identity, provisioning, and governance workflows Integrate APIs with authentication services for token handling, session logic, and authorization Build Pub/Sub event pipelines to automate ...

modernise identity, authentication, authorization, and lifecycle management across the enterprise. We're looking for a Senior IAM Application Developer skilled in cloud-native API development, identity orchestration, Pub/Sub event processing, and Terraform automation. This role sits at the heart of building scalable identity services across Google Cloud … Platform (GCP). Responsibilities: Design & develop identity lifecycle orchestration flows (provisioning, de-provisioning, adaptive authentication, etc.) Build secure RESTful APIs and backend microservices for identity, provisioning, and governance workflows Integrate APIs with authentication services for token handling, session logic, and authorization Build Pub/Sub event pipelines to automate ...

narrow or isolated engineering role. It requires ownership, comfort with ambiguity, and the ability to take responsibility for backend features and services from early design through to production deployment. Responsibilities Backend Development and API Design Design, build and ship scalable backend services and RESTful APIs … backend features from concept through to production release Platform Infrastructure and Performance Develop and maintain cloud infrastructure with a strong focus on Azure services Design and implement database schemas, optimise queries and ensure data integrity Build resilient, performant systems capable of handling enterprise workloads Ensure backend services are secure ...

narrow or isolated engineering role. It requires ownership, comfort with ambiguity, and the ability to take responsibility for backend features and services from early design through to production deployment. Responsibilities Backend Development and API Design Design, build and ship scalable backend services and RESTful APIs … backend features from concept through to production release Platform Infrastructure and Performance Develop and maintain cloud infrastructure with a strong focus on Azure services Design and implement database schemas, optimise queries and ensure data integrity Build resilient, performant systems capable of handling enterprise workloads Ensure backend services are secure ...

cloud-native platforms supporting mobile applications in a regulated environment. This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery. You will contribute across the full SDLC while influencing engineering standards, best practices, and technical quality. Key Responsibilities Design … continuous improvement initiatives Required Skills & Experience Strong backend development experience with Java and/or Kotlin Spring Boot, REST APIs, microservices architecture Secure API design, OAuth, authentication/authorisation AWS or cloud platform experience Event-driven systems and distributed architectures Experience working in financial services or regulated environments ...

pressure; make frame-time and latency predictable across device classes Define and monitor SDK health metrics at scale (crashes, ANRs, error rates, perf envelopes) API design and developer experience Design clear, stable, Kotlin-first public APIs (versioned, well-documented, testable) Implement best practices for networking, auth … fixes and verify via dashboards Provide concise developer-facing change notes/migration snippets to the Solutions Engineer for release notes Roadmap contribution Co-design the next generation of the Android Captur SDK for release at the end of Q2 Champion performance budgets and device-class targets during planning ...

pressure; make frame-time and latency predictable across device classes Define and monitor SDK health metrics at scale (crashes, ANRs, error rates, perf envelopes) API design and developer experience Design clear, stable, Kotlin-first public APIs (versioned, well-documented, testable) Implement best practices for networking, auth … fixes and verify via dashboards Provide concise developer-facing change notes/migration snippets to the Solutions Engineer for release notes Roadmap contribution Co-design the next generation of the Android Captur SDK for release at the end of Q2 Champion performance budgets and device-class targets during planning ...

shaping Meteor's digital future. Key Responsibilities Lead, mentor, and inspire a team of developers, fostering a culture of technical excellence and continuous improvement Design, develop, and maintain high-quality software solutions across the full stack Architect and implement systems using .NET, JavaScript, SQL, and modern frontend frameworks Oversee … API design and integrations, ensuring secure and efficient data exchange Translate business and stakeholder requirements into clear technical solutions Conduct code reviews and ensure adherence to coding, security, and quality standards Drive continuous improvement in development workflows, testing, and deployment practices Support the professional development of team members ...

Days in Office The Role Dev Sec Ops Engineer Role Overview We are seeking a highly skilled Senior Data Platform & Integration Engineer to design, develop, and optimize enterprise data solutions. The ideal candidate will have deep expertise in modern data platforms, integration technologies, and advanced analytics, including AI/… ML. Key Responsibilities Data Platform Management Design and implement solutions using Microsoft Fabric, Snowflake, CosmoDB, Databricks, MongoDB, and traditional RDBMS systems Data Replication & CDC Configure and manage Qlik Replicate and Oracle GoldenGate for real-time data synchronization Data Modeling Develop conceptual, logical, and physical models using ERStudio Integration & Messaging ...

data exchange across the bank's ecosystem, supporting core-banking operations, digital channels, payment processing, treasury, compliance, and customer experience initiatives. Key Responsibilities: Integration Design & Development • Design and implement integration services using Temenos Integration Frameworks, including: IRIS, TCIB/Infinity APIs, Transact OFS, T24 Web Services, TAFJ/… Analysis & Solutioning • Work with BAs, product owners, and vendors to understand functional requirements. • Translate business requirements into clear technical integration specifications. • Participate in architecture design and review to ensure alignment with the banks target architecture. • Evaluate feasibility and performance of integration patterns (API-led, ESB, event-driven). ...

data exchange across the bank's ecosystem, supporting core-banking operations, digital channels, payment processing, treasury, compliance, and customer experience initiatives. Key Responsibilities: Integration Design & Development • Design and implement integration services using Temenos Integration Frameworks, including: IRIS, TCIB/Infinity APIs, Transact OFS, T24 Web Services, TAFJ/… Analysis & Solutioning • Work with BAs, product owners, and vendors to understand functional requirements. • Translate business requirements into clear technical integration specifications. • Participate in architecture design and review to ensure alignment with the banks target architecture. • Evaluate feasibility and performance of integration patterns (API-led, ESB, event-driven). ...

Contract API Gateway Specialist (Software AG/webMethods/Defence) £600 per day (Outside IR35) part time 12-month contract (approx. 110 days' effort ) Full Remote | Client based in Portsmouth About the Role An excellent long-term contract opportunity for an experienced API Gateway Specialist to support … major Defence-sector programme. The successful contractor will work remotely, contributing deep technical expertise around Software AG and webMethods technologies, cloud integrations, and secure API design. Candidates with a strong background in API Gateway technologies (SAG, IBM API Gateway, webMethods) from any sector will be considered. Existing ...

maintainable code. This is an exciting opportunity to join collaborative and innovative startup with opportunities for professional growth and learning. What You’ll Do Design and develop high-throughput, low-latency APIs using Go. Build and maintain real-time data ingestion and processing pipelines. Optimise backend services for scalability … delivery. Collaborate with front-end teams to power trading consoles and dashboards. Profile and tune Go applications for performance and memory efficiency. Ensure secure API design and compliance with data privacy regulations. Contribute to architecture discussions, code reviews, and documentation. Key requirements Strong experience with Golang in production ...

maintainable code. This is an exciting opportunity to join collaborative and innovative startup with opportunities for professional growth and learning. What You'll Do Design and develop high-throughput, low-latency APIs using Go. Build and maintain real-time data ingestion and processing pipelines. Optimise backend services for scalability … delivery. Collaborate with front-end teams to power trading consoles and dashboards. Profile and tune Go applications for performance and memory efficiency. Ensure secure API design and compliance with data privacy regulations. Contribute to architecture discussions, code reviews, and documentation. Key requirements Strong experience with Golang in production ...

Role Title: Business Analyst - API Payments Umbrella rate: £350 - £385/Day Location: Knutsford Duration: 12 Months Days on site: 2-3 We are seeking a highly skilled Payments Business Analyst with strong experience in API integration and a solid understanding of the Payments domain. The ideal candidate … will act as a bridge between business stakeholders and technical teams, ensuring seamless delivery of payment solutions and API-driven integrations. Key Responsibilities * Requirements Gathering & Analysis o Collaborate with business stakeholders to understand payment workflows, transaction processing, and integration needs. o Document functional and non-functional requirements for APIs ...

API Developer - London Atrium EMEA are looking for several API Developers to support the Development teams onsite with a client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. - API Developer - Java, TDD, RESTful API design & build, OAS/…/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply now or contact Lianne to be considered for the API Developer - London role ...

intersection of knowledge graphs, real-time IoT data, and enterprise integration—building infrastructure that thousands of businesses will depend on. What You'll Own Design the framework that supports multiple partnership and customer models: Deep Embedded (white-label components), Best-of-Breed SaaS (standalone platform with APIs), Data Layer … Only (predictions via API) Evaluate architectural tradeoffs across complexity, risk, scalability, time-to-market, and value capture for each pattern Make build vs. buy decisions: direct API integrations vs. iPaaS middleware vs. embedded agents Define authentication strategies across OAuth 2.0, certificate-based auth, and federated identity for different ...