1 to 25 of 74 API Design Jobs

Kong API Gateway Specialist

Location
United Kingdom
Summary We are seeking an experienced Kong API Gateway Specialist to lead the development, implementation, and governance of our enterprise API ecosystem. This role will be responsible for establishing API governance standards, designing and managing API lifecycle processes, and driving the adoption of best practices across … integration and middleware platforms. The ideal candidate will possess deep expertise in Kong API Gateway, API management, security, integration architecture, and governance frameworks. They will work closely with enterprise architects, development teams, security teams, and business stakeholders to ensure APIs are secure, scalable, reusable, and aligned with organisational ...

Solutions Architect (Software Implementation)

Hiring Organisation
Project44
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
Overview In this role you will guide post-contract integrations for customers, turning business needs into scalable technical architectures. You'll lead API-focused design, own implementation documents, and serve as the technical point of contact throughout the lifecycle. Collaborating with engineering, product, and support, you'll ensure … successful go-lives and high customer satisfaction. The position sits within the Customer Experience team, offering visible impact across platforms and processes. Verantwoordelijkheden Lead API solution design for customer implementations Create and own Implementation Design Documents (IDDs) covering architecture, API flows, data mappings, dependencies, assumptions ...

iOS Lead Engineer

Hiring Organisation
Vinted
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
Overview In this Lead iOS Engineer role, you guide the technical direction of Vinted's design system, focusing on reusable UI, scalable architecture, and AI-ready patterns. You own the iOS component library, drive modularity and long-term platform health, and collaborate across disciplines to ship consistent experiences. … paid annual leave Newest MacBook models EAP and mental health support team-building events home office budget for furniture Verantwoordelijkheden Own architecture and design decisions for the shared iOS component library and design-system tooling Push components toward greater composability and flexibility for broader screen coverage Make ...

Senior Backend Engineer (Java)

Hiring Organisation
Randstad Technologies Recruitment
Location
Manchester, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day Inside IR35 via Umbrella
Location: Manchester, UK (Hybrid - 2 days/week on-site) Role Type: Contract About the Role We are seeking a Senior Backend Engineer to design, build, and scale resilient, high-performance distributed systems. This role is ideal for a pragmatic developer who thrives in fast-paced Agile environments, excels … work cross-functionally with product managers, frontend engineers, and platform teams while elevating code quality and mentoring fellow engineers. Core Responsibilities Architecture & API Design: Build and maintain scalable, fault-tolerant backend microservices and REST APIs. Technical Leadership: Lead medium-to-large engineering initiatives, participate in design reviews ...

Senior Platform Engineer

Hiring Organisation
WTW
Location
Reigate, Surrey, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
technical input, guidance and leadership to the team (including code quality, best practices, processes, some aspects of release management, etc.). Assist in the design and documenting of solutions meeting functional and non-functional requirements. Lead by example getting directly involved in the day-to-day delivery of work … control plane engineering Practical experience designing and developing management and controlplane capabilities for line of business or SaaS applications, including stack/environment management, API design for platform services, and developer/operator UX. Experience working with or designing Azure stamp-based or scale-unit architectures, including multi ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90000/annum
integration layer behind a new generation of AI-powered products. This is a genuinely full-stack engineering role, combining production-grade backend development, API design, AI integrations and frontend engineering. You'll work across the full application lifecycle, designing the services and interfaces that connect AI capabilities … products customers and colleagues use every day. You'll play a key role in building MCP integrations, agent-to-agent connectivity and robust API services, while also developing responsive, accessible interfaces in React and TypeScript. What you'll be doing Own the application and integration layer of AI products ...

Technical Solution Architect

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
architecture of a ledger-based post-trade platform. You'll start hands-on as a senior engineer, and take on increasing ownership of system design, technical direction, and solution architecture as you grow into the role. Why This Role You'll have real influence in a small, high-calibre … genuine voice in product and architectural decisions. Expect a fast learning curve across technology, regulation, and market structure. What You'll Do Architecture & System Design Design secure, scalable distributed systems for regulated environments Define and evolve system architecture, APIs, and integration patterns Apply sound software design patterns ...

Integration Lead

Hiring Organisation
StepChange Debt Charity
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Ready to shape the future of our integration capability and become the technical authority behind enterprise-wide connectivity? Want to lead the design and delivery of scalable, secure, cloud-first integrations that power real business impact? Excited by the challenge of modernising legacy systems while driving best-practice engineering … architecture evolution and collaborate across teams to enable seamless, future-ready connectivity. What will you be doing? As a technical authority in integration and API design, youll set the standards that shape how our systems connectdefining integration patterns, ensuring architectural consistency and driving secure, scalable solutions across ...

Staff Product Manager, GTPN

Hiring Organisation
Airwallex
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
Overview As Staff Product Manager for GTPN, you drive strategy, roadmap, and execution for our customer-facing API platform. You work with engineering, sales, and leadership to deliver scalable, secure APIs that enable global treasury and payments experiences. This high-impact role shapes the future of our API … driven financial infrastructure and requires cross-functional collaboration and data-driven decision making. You will mentor peers and stay ahead of payments and API trends, with a clear impact on customers and partners. Based in San Francisco, you'll join a fast-paced, collaborative team building solutions at scale. ...

Java Backend Developer

Hiring Organisation
Monks
Location
Hilversum, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
world outcomes. Verantwoordelijkheden Develop and maintain high-performance Java server-side logic Collaborate with frontend developers to integrate client-facing features with backend services Design and implement APIs and RESTful services Set up, maintain, and optimize databases Improve performance, scalability, and security Identify and fix bugs and performance bottlenecks … best practices Participate in code reviews and uphold coding standards Collaborate with QA, DevOps, and Product Management to deliver robust applications Maintain technical and API documentation Belangrijkste vereisten Dutch citizenship and fluency in Dutch Bachelor's degree in Computer Science or Information Technology (or equivalent experience) Proven Java development ...

Applied Value Engineer

Hiring Organisation
Celonis
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
value engineering experience (2+ years) Domain knowledge in core business processes and industries (e.g., supply chain, finance) Software/Data Engineering skills: Python, API design, SQL, data integration, ML/AI libraries Experience with agentic AI systems, LLM orchestration, RAG, tool use, prompt engineering Production ML/LLMOps … English; Dutch preferred but not essential Master's Degree in relevant fields or equivalent work experience Executive communication Cross-functional collaboration Strategic storytelling Python API design ...

Senior Software Engineer

Hiring Organisation
Pinnacle Technical Resources
Location
Mc Lean, Virginia, United States
Employment Type
Permanent
Salary
USD 90 Hourly
Virginia Duration: Contract (Possible contract to Hire) Job ID: 179091 Job Overview: We are seeking an experienced and highly skilled Senior Software Engineer to design, build, and support scalable Multifamily application platforms and cloud-native services. This role focuses on hands-on engineering across Java-based microservices, event-driven … MongoDB, AMQ, Kubernetes, AWS, CI/CD automation, and production-grade backend capabilities that are secure, resilient, observable, and aligned with business needs. Responsibilities: Design, develop, test, deploy, and support backend application capabilities, including Java-based microservices, REST APIs, event-driven distributed services, and AMQ-based messaging integrations. Apply ...

Full Stack Developer - Intermediate

Hiring Organisation
Pinnacle Technical Resources
Location
Plano, Texas, United States
Employment Type
Permanent
Salary
USD 125 Hourly
stack development, a strong understanding of Agile methodologies, and expertise in modern programming languages and frameworks. This role requires a proactive individual who can design, develop, test, deploy, and maintain software solutions while ensuring high performance, scalability, and security. Responsibilities: Develop and maintain full-stack applications using Java, Spring … Framework/Spring Boot, JavaScript/TypeScript, ReactJS, and Next.js. Design and implement microservices and RESTful APIs with a focus on secure API practices. Work with both SQL and NoSQL databases, including data modeling, query optimization, and performance tuning. Implement CI/CD pipelines using tools like Jenkins ...

Senior Python Developer

Hiring Organisation
Tech 4
Location
City of London, London, United Kingdom
Employment Type
Permanent
play a key part in driving the adoption of AI across engineering, leveraging emerging technologies and embedding AI-native workflows to improve how they design, build, and deliver software. This role is predominantly hands-on, with around 2030% of time on technical leadership: architecture, mentoring, and shaping … generated code to our standards for security, reliability, and cost-efficiency (FinOps). These are first-class concerns in agentic pipelines, not afterthoughts. Design, build, and operate software across our platform, applying the same rigour to AI-augmented work as to anything else you ship. Embed deeply with Product ...

Senior Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Knutsford, Cheshire, North West, United Kingdom
Employment Type
Permanent
enterprise adoption. Contributing to event standards, patterns, and best practices, enabling teams across the organisation to build confidently on the platform. Making considered design choices that balance scalability, resilience, security, and developer experience. Close collaboration with product, architecture, and engineering teams to align platform capabilities with business and regulatory … infrastructure as code, and deployment pipelines. Hands-on experience working with cloud technologies such as AWS, Terraform, CI/CD tooling, and Kubernetes to design, build, and deploy reliable, cloud-native applications. Working knowledge of other cloud platforms, such as Azure and GCP. Some other highly valued skills ...

Senior Software Architect - C#/.NET & Distributed Systems

Hiring Organisation
Computer Futures
Location
West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
market-leading Warehouse Control System platform. This position will suit a hands-on architect who enjoys working across the full software lifecycle, from solution design and architecture through to technical leadership, customer engagement and delivery. You'll help shape the future direction of a highly scalable warehouse automation platform … scalable and capable of supporting increasingly sophisticated automation technologies. Key Responsibilities Own and define application, integration, deployment and data architecture across the WCS platform. Design scalable, resilient and maintainable software solutions using modern Microsoft technologies. Collaborate with engineering teams to establish architectural standards, development frameworks and technical governance. Lead ...

Senior Software Architect - C#/.NET & Distributed Systems

Hiring Organisation
Computer Futures
Location
United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 100,000 Annual
market-leading Warehouse Control System platform. This position will suit a hands-on architect who enjoys working across the full software lifecycle, from solution design and architecture through to technical leadership, customer engagement and delivery. You'll help shape the future direction of a highly scalable warehouse automation platform … scalable and capable of supporting increasingly sophisticated automation technologies. Key Responsibilities Own and define application, integration, deployment and data architecture across the WCS platform. Design scalable, resilient and maintainable software solutions using modern Microsoft technologies. Collaborate with engineering teams to establish architectural standards, development frameworks and technical governance. Lead ...

Chief Technology Officer

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
lead the next phase of our technology transformation journey to create great products and services for the organisation. Main Responsibilities Responsible for the overall design and solution architectureinvolvinglargedata. Lead and maintain key design decisions and existing solution architecture documents. Demonstrate a Product delivery mindset, and drive capabilities … existing eCommerce and data infrastructure for scalability and expansion. Skills: Detailed knowledge and previous experience with AI and Claude. Strong understanding of architecture, discovery, design and delivery of Enterprise, Cloud and Security technologies, preferably in a Microsoft technology stack. C# .NET Core, REST API Design and Development ...

Lead Python Full-Stack Engineer

Hiring Organisation
EPAM Systems
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
cross-functional teams to drive delivery and technical decisions. A meaningful hook is the opportunity to influence AI-driven product development at scale. Verantwoordelijkheden Design, develop, and optimize Python-based backend services using FastAPI or Django Build responsive frontend interfaces with React.js and TypeScript Develop and integrate RESTful/… OpenAI, Azure OpenAI) or LangChain Knowledge of Microsoft Azure cloud services and CI/CD workflows using GitHub Actions Solid understanding of microservices, REST API design and container orchestration (Docker, Kubernetes) Experience building RAG pipelines for AI/ML use cases Strong knowledge of SQL/NoSQL databases ...

Integration Developer - Technical Lead

Hiring Organisation
MORGAN PHILIPS UK LIMITED
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
data services, and cloud platforms. You will own end-to-end integration architecture, champion modern engineering standards, and guide engineers through best practices in API design, cloud-native development, and scalable integration patterns. This is a hands-on leadership role, ideal for someone who enjoys coding, problem-solving … steering technical direction while mentoring engineers and collaborating with product, data, and platform teams. What You'll Be Doing Lead the design, development, and delivery of integration solutions across a diverse technology ecosystem Develop secure, scalable APIs, services, and messaging-based integrations Champion best practices in engineering, DevOps, automation ...

Blockchain Engineer

Hiring Organisation
Ubique Systems UK Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Minimum Qualifications 5+ years of experience in software engineering, solution design, or architecture roles Strong stakeholder management experience across business and technology domains Strong analytical and problem-solving capabilities Experience working in Agile organizations Bachelor's degree in Computer Engineering, Software Engineering, or a related discipline Fluent English communication … messaging technologies SQL and NoSQL databases Containerization (Docker) Kubernetes CI/CD pipelines Git-based development workflows Good understanding of: Distributed systems System integration API design Scalability patterns Roles and Responsibilities Backend Engineering Design and develop enterprise-grade Back End services using Java. Build APIs and microservices ...

Senior Integration Architect

Hiring Organisation
TXP
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700/day
teams, you will help shape the future integration strategy while ensuring high-quality, scalable, and maintainable solutions are delivered across the programme. Key Responsibilities Design and deliver integration solutions, migrating services from legacy platforms to modern strategic integration platforms. Define API specifications and integration patterns, including the transformation … legacy SOAP services into modern RESTful APIs. Apply API-first and domain-driven integration approaches to support reuse, resilience, and long-term maintainability. Contribute to end-to-end solution design, ensuring alignment with wider enterprise architecture principles and transformation objectives. Promote modern engineering practices including automated testing ...

Full Stack Developer

Hiring Organisation
MJA (London) Ltd
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
consumers, topics, partitions and consumer groups Cloud: AWS application deployment and support DevOps: CI/CD pipeline implementation and automation Containers: Docker APIs: RESTful API design and development using C# with Open API standard Source Control: GitHub and Azure DevOps Production Engineering: Troubleshooting, monitoring, logging and performance … optimization Highly Desirable Amazon MSK or managed Kafka experience AWS EKS/ECS Terraform/AWS CloudFormation AWS Lambda, API Gateway, SQS, SNS and EventBridge Redis and distributed caching CloudWatch, ELK/OpenSearch, Datadog, Prometheus, Grafana or Splunk OAuth 2.0/JWT and API security AWS certification Experience ...

Full Stack Developer

Hiring Organisation
MJA (London) Ltd
Location
EC3, Broad Street, Greater London, United Kingdom
Employment Type
Contract
consumers, topics, partitions and consumer groups Cloud: AWS application deployment and support DevOps: CI/CD pipeline implementation and automation Containers: Docker APIs: RESTful API design and development using C# with Open API standard Source Control: GitHub and Azure DevOps Production Engineering: Troubleshooting, monitoring, logging and performance … optimization Highly Desirable Amazon MSK or managed Kafka experience AWS EKS/ECS Terraform/AWS CloudFormation AWS Lambda, API Gateway, SQS, SNS and EventBridge Redis and distributed caching CloudWatch, ELK/OpenSearch, Datadog, Prometheus, Grafana or Splunk OAuth 2.0/JWT and API security AWS certification Experience ...

Solutions Architect

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
Ireland providing specialist services to a wide range of blue-chip clients. The role We are seeking technical polyglots who enjoy both technical architectural design, hands-on coding and peer reviews, though also like the idea of the equally important social/client-facing aspect of the role. … development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority (TDA) for delivery of technical stories and produce technical documentation artefacts to support the delivery process. Main Responsibilities Duties will include: The design ...