10 of 10 Contract API Design Jobs

Senior Java Backend Developer - API & Microservices Modernisation Location: Telford - minimum 2 days per month onsite, remaining time remote Contract Length: 12 months Rate: £550 per day IR35: Inside IR35 Start Date: Candidates must be available to start w/c 4 January 2027 Client: Central Government The Role … microservices, with a strong focus on scalability, resilience, maintainability and integration with existing systems. Essential Skills Java - Strong backend development experience. Spring Boot - RESTful API and microservices development. Microservices Design - Experience designing scalable, resilient and loosely coupled microservices, including service-to-service communication. API Design - Strong ...

strong software engineering background who can turn complex requirements into clear designs and practical development tasks. Working alongside established delivery squads, you will design and assure technical solutions, resolve complex integration challenges and translate architecture into actionable engineering work and shape solutions across interconnected platforms and external services. Your … work will span API design, systems integration, platform enhancements and technical migrations, taking solutions from initial design through assurance and into implementation. Skills and Experience: Proven Solution Architecture experience combined with a strong software engineering background. Expertise in API design, system integration and cloud-based ...

scale. This role combines backend engineering, cloud-native development and iOS framework development, giving engineers the opportunity to work across Go microservices, Kubernetes infrastructure, API platforms and reusable iOS SDKs. On the job responsibilities Designing and developing REST and gRPC APIs used by digital products. Building scalable microservices using … across the wider business. Supporting engineering best practice, code quality and technical standards. Key Skills Backend Development Golang (Go) REST APIs gRPC Microservices architecture API design and versioning iOS Development Swift iOS Frameworks SDK Development Swift Package Manager Mobile security and accessibility Cloud & Platform Engineering Kubernetes Docker Helm ...

modern agentic tools (e.g., Claude, Cursor) directly into your daily development, testing, and architecture workflows. Modern Swift & Architecture: Deep expertise in modern Swift, Cocoa design patterns, robust API design, and modular platform architecture. System Integration: Solid understanding of end-to-end client-server architecture, networking protocols … mobile-to-backend communication. Quality & Scalability: Proven track record of designing shared components where backward compatibility, API stability, and documentation are primary considerations. Collaborative Mindset: Strong communication skills with an ability to translate legal/policy guidelines into technical requirements, prioritizing team outcomes over individual focus. Nice to Have ...

join the team redesigning their client portal. This is a hands-on role for an experienced mid-level or senior Python engineer. You will design and build the APIs and backend workflows behind new portal features and own your work through to production. You will work in a collaborative … designing maintainable REST APIs, with solid data modelling and relational database practice Good knowledge of authentication, authorisation, single sign-on patterns and secure API design A testing mindset and experience working with CI/CD Confidence diagnosing application, database and performance issues in live environments An understanding ...

Processing, and Cash & FX. You'll act as the technical authority within delivery teams, driving architecture strategy, governance, and engineering best practice. Key Responsibilities Design modern microservices and event-driven architectures using technologies such as Kafka, REST APIs and cloud platforms. Lead architecture governance, technical reviews, non-functional requirements … Processing Strong software engineering background in Java, Spring Boot, Oracle and SQL databases. Proven experience with: Microservices architecture Event-driven systems (Kafka, MQ, Solace) API design and integration AWS and/or Snowflake Knowledge of SWIFT MT, ISO 20022 and post-trade processing workflows. Experience operating within enterprise ...

strong software engineering background who enjoys building robust, scalable solutions across both backend and frontend technologies. Essential Skills Strong Python development experience FastAPI, API design, middleware, and asynchronous development patterns Pydantic and schema validation PostgreSQL database design, migrations, and query optimisation React and TypeScript Authentication and authorisation ...

Java and Spring Boot Deploy and support services on AWS (e.g. ECS/EKS, Lambda, RDS, DynamoDB, SQS/SNS) Own services from design through to production support Maintain CI/CD pipelines and infrastructure as code (Terraform, CloudFormation or CDK) Review code and contribute to architecture decisions Essential … skills: Commercial experience with Java 21 and Spring Boot Building and running applications on AWS Microservices and API design Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people ...

with substantial hands-on responsibility rather than purely architectural oversight. Strong backend and database skills . Production experience with TypeScript/JavaScript and Node.js , API design, asynchronous programming, SQL and relational data modelling. Evidence of performance improvement. Practical experience profiling applications, diagnosing bottlenecks and reducing ...

partners across product, legal, policy, and design. What We're Looking For 8+ years of professional iOS development experience with modern Swift and Cocoa design patterns. Agentic workflow adoption: Hands-on experience integrating tools like Cursor and Claude into daily engineering. Platform & API design: Proven track record ...