51 to 75 of 85 API Design Jobs in England

evolve our stack and make constant improvements. Required Skills/Experience Strong C# development experience Experience with both .NET Core and .NET Web API Experience of building Microservices in .Net Core Experience using Message Based Architectures Experience using both SQL & NoSQL technologies Experience of API design Cloud ...

division. This position falls under our Cross Border line of business and is located in London. In this role, you will contribute to the design and development of our eMoney and FX payment systems. You will report directly to the Engineering Manager and collaborate closely with Product, Design … will set you up for success by providing: Assigned workspace or home office setup Company-issued equipment Role Responsibilities Provide significant contribution to the design, development, and maintenance of secure and scalable payment systems. Collaborate with engineering managers, designers, and product teams to gather and analyse requirements, implement technical ...

features-you will be building impactful, user-facing applications from day one. Working closely with the founding team, you will help architect robust APIs, design intuitive frontend interfaces, and integrate cutting-edge AI/ML models into our core product. Qualifications & Experience Essential: 0-2 years of hands … projects). Education: A degree in Computer Science, Information Technology, or a related discipline. Core Fundamentals: A solid grounding in web development fundamentals, REST API design, and secure coding practices. Frontend: Proficiency in React and TypeScript, with a clear sense of how to build maintainable component hierarchies. Backend ...

career in solution architecture and is looking to deepen their expertise in enterprise integration. You will work alongside senior architects and delivery teams to design and shape integration solutions for clients, with a focus on quality, scalability, and best practice. Responsibilities: Support the design and documentation … technical requirements into clear architecture. Contribute to discovery and requirements-gathering workshops, working with clients and stakeholders to understand their integration needs. Produce solution design documentation including architecture diagrams, data flow maps, and integration specifications. Work closely with development teams to ensure solutions are built in line with ...

distributed video recording systems and advanced reporting/analytics applications. In this role, you will be deeply involved in hands‐on development, architectural design, and cross‐studio collaboration to advance our internal ecosystem. Key Responsibilities Design & Implementation: Architect and develop robust backend solutions to meet the fast‐paced … challenges of global game development. Technical Leadership: Contribute to the team’s software design guidelines, coding standards, and architectural blueprints. Global Collaboration: Partner and collaborate with other Rockstar technology teams across our worldwide studios. Continuous Innovation: Develop a deep understanding of existing systems while researching and adopting new technologies ...

client data will be sourced, validated, and integrated into Mondra, leveraging where possible our existing Import and Export APIs and identifying where custom API development may be required for fulfil Mondra’s data requirements. You will also contribute to the client contracting process, ensuring technical commitments are clearly defined … including mapping data sources, transformation logic, and validation processes. Identify the client’s BI requirements, and define data export strategies (preferably via existing Mondra API). Identify the authentication/authorisation capabilities of the client, and promote the integration with Mondra’s Identity Provider via Single Sign On. Leverage ...

product mission by partnering with stakeholders to define strategy, technical architecture, product roadmap, and execution plans. Champion high code quality, scalable and resilient system design, and customer focus across the team. Lead by example, fostering a culture of innovation and ownership. Participate in on‐call rotation every four weeks. … teams of 6+ individual contributors, delivering major product milestones. Experience building scalable, distributed systems in public or private cloud environments. Strong knowledge of REST, API design patterns, and microservices. Experience managing full‐stack development teams (UI and backend services). Familiarity with container orchestration, deployment models, modern ...

their career in Solution Architecture or is ready to transition from Business Analysis or Integration Developmen t into a role where you'll help design innovative enterprise integration solutions for a diverse client base. Working alongside experienced Solution Architects and delivery teams, you'll gain valuable exposure to enterprise … integration projects while developing your expertise in solution design, architecture best practices, and modern iPaaS technologies. This is a fantastic opportunity for someone who enjoys combining technical knowledge with business engagement and wants to develop into a senior architecture role. Key Responsibilities Support the design and documentation ...

role, with strong backend expertise in Typescript and Node and front capability in React Proficiency in SQL, Redux, cloud services (AWS or GCP), RESTful API design and GraphQL Strong analytical skills with the ability to design, optimise, and troubleshoot complex UIs Excellent communication and leadership skills; ability ...

LangChain or LangGraph (agent memory, tool calling, state management) Dagster in production (assets, sensors, partitions) or equivalent pipeline orchestration Strong backend fundamentals including API design, async programming, and database modelling You've built systems that had to work reliably at scale, not just pass a demo Experience 5+ ...

Data & ML Pipelines: Model data for strict auditability, versioning, and efficient querying, feeding structured datasets directly into downstream machine learning models. Empower Internal Teams: Design and implement intuitive, responsive web interfaces that allow non-technical stakeholders (Legal, Operations, Trust & Safety) to author and manage content policies with robust approval … services using Java, Kotlin, or Go . Modern Frontend Skills: Hands-on experience building clean, intuitive internal tooling using React and TypeScript . System Design & Integrity: Deep understanding of API design, backward compatibility, and data modeling for complex, versioned systems where stability is critical. Data Savvy: Experience ...

products (e.g., Concierge an agentic AI workflow tool, Prism a Mercer knowledge fabric for scheme data, and similar initiatives), from problem framing and design through build, release, and support. Translate risk advisory/consulting needs into clear technical requirements, user stories, and solution designs; partner with stakeholders through … Proven experience as a Tech Lead/Lead Engineer delivering production software, including hands-on coding and code review ownership. Strong backend engineering skills (API design, data modelling, performance) and experience building secure, role-based applications. Experience working directly with business stakeholders in a financial firm, with ...

improving APIs that support critical platform functionality Investigating production issues and tracing problems across distributed systems Working with product and engineering teams to design scalable solutions Improving reliability, observability and performance across existing services Reviewing code, sharing knowledge and helping raise engineering standards across the team Tackling real-world … APIs used by customers or internal teams Other Skills Needed: Solid backend engineering experience in C#, Java, or Go, with a strong grasp of API design and architecture. Hands-on experience managing and debugging production systems across cloud and self-managed infrastructure. Proven ability to navigate complex third ...

develop new features, enhance existing systems, and ensure our platform remains stable and efficient. Your deep understanding of Rails architecture, PostgreSQL optimisation, and API design will be essential as you contribute to ongoing development projects. If you enjoy collaborating in Agile/Scrum environments, value clean code ...

evolution of core Ruby on Rails operational platforms. Optimise PostgreSQL performance and Sidekiq background job efficiency. Manage secure third-party integrations and RESTful API design. Partner with Platform teams on AWS and CI/CD reliability. The Person: Deep experience with Ruby on Rails and OOP. Expert in PostgreSQL ...

Autogen, Google ADK). Architecting RAG pipelines, vector database integrations, and prompt management strategies. Building guardrail frameworks to prevent hallucinations, injection and bias. Designing API-first and event-driven architectures. Influencing enterprise roadmaps, governance forums and technical standards. Partnering with senior engineers, value streams, and product stakeholders. What … bring Expertise in Azure AI, AWS Bedrock or Google Vertex. Strong experience with LLM evaluation/MES frameworks. Deep knowledge of integration security, API design and cloud-native patterns. Experience delivering solutions in regulated environments (desirable). Naturally proactive, consultative and comfortable influencing at senior levels. TPBN1_UKTJ ...

Title: Python Fast API Developer - Onsite in Bristol 2/3 days per week Job Description This role focuses on designing and developing robust Python-based backend applications and services, with a strong emphasis on REST API design and implementation using FastAPI. You will work with Pydantic … code. The position requires close collaboration with a diverse team to deliver scalable, reliable solutions and to continuously improve development and release processes. Responsibilities Design and develop Python-based applications and backend services. Build, document, and maintain REST APIs using FastAPI, ensuring secure and reliable integrations. Develop and maintain ...

ENGINEER Leading Investment House| London | Contract Role THE ROLE Design and build core AI platform components for a leading buy-side investor. You'll own the LLM gateway, MCP connector layer, observability tooling, and privacy proxy translating business use cases into governed, production-ready AI systems . WHAT … Design and maintain LLM gateway, MCP connector layer, observability, and privacy proxy Develop MCP connectors across data sources (M365, Salesforce, Kensho, Moody's, internal systems) Build AI-powered tools and workflows for business teams Integrate Databricks/Unity Catalog as data foundation for AI features Write clear specifications before ...

skilled developers. Essential skills & experience Strong technical understanding of business platforms Strong knowledge of .NET/SQL & Oracle Solid experience with enterprise integration patterns, API design, asynchronous messaging and data synchronisation Proven experience providing technical leadership across onshore and offshore teams, including line management responsibility Track record … live service Strong ability to review designs, identify risks and ensure solutions meet clear quality standards Good understanding of DevOps, CI/CD, secure design and modern delivery practices Experience working in blended delivery environments including permanent teams, contractors and System Integrators Core responsibilities Define and maintain engineering standards ...

contract Solution Architect for a 3 month project (Outside IR35.) You will work closely with senior stakeholders and the wider team to provide architecture design and the integration approach between front end and backend systems. You will provide technical leadership and guidance throughout the project lifecycle, ensuring solutions … solutions. Strong background in front and backend technologies for system integration. Strong understanding of cloud platforms (AWS, Azure, Google Cloud) Experience with microservices architecture, API design, and integration patterns. Experience with DevOps practices and tools. Please apply now to be considered for this role. ...

production AI/ML feature development Understanding of anomaly detection or predictive analytics Proficiency in Python and TypeScript/JavaScript Experience with REST API design and MCP integration patterns Knowledge of MLOps practices Understanding of graph-based dependency or impact analysis (desirable) Experience with AI features in compliance ...

Data platforms - Fabric, Snowflake, CosmoDB, DataBricks, MongoDB, RDBMS Data replication/CDC - Qlik Replicate, Oracle Golden Gate Data modeling - ERStudio Message-oriented data movement API design and access Data Analytics and AL/ML - AzureML Data virtualization Streaming data Data integration and ETL/ELT Tools - Matillion, Alteryx … NoSQL data stores, methods, and approaches (star and snowflake, dimensional modelling and third normal form) Experience with data security and data access controls and design Deep understanding of SoX, GDPR and Regulatory/CNI control environments In-depth experience in providing resolution to an extensive range of complicated data ...

Central London (Hybrid, 3 days in-office) Engagement: Contract with potential to convert to permanent Rate: Competitive The Role: You will join a critical API team responsible for high-throughput backend services and real-time payment routing decisions. This is foundational infrastructure where your work directly affects payment acceptance … complex services in production. Production-level expertise in Go and/or Java. Experience building or maintaining high-volume, low-latency distributed systems. Strong API design skills. Hands-on experience with AWS cloud-native deployment. A systems-thinking approach to performance, correctness, and failure modes under load. Background ...

Central London (Hybrid, 3 days in-office) Engagement: Contract with potential to convert to permanent Rate: Competitive The Role: You will join a critical API team responsible for high-throughput backend services and real-time payment routing decisions. This is foundational infrastructure where your work directly affects payment acceptance … complex services in production. Production-level expertise in Go and/or Java. Experience building or maintaining high-volume, low-latency distributed systems. Strong API design skills. Hands-on experience with AWS cloud-native deployment. A systems-thinking approach to performance, correctness, and failure modes under load. Background ...

7+ MVC-based frameworks (Laravel, Yii or Symfony) MySQL Version control (Git) HTML5, CSS3, JavaScript Strong communicator (both written and verbal) Bootstrap (client-side) API design/development AWS Docker The role is paying up to £50,000 (DOE) + benefits & will be hybrid with 3 days ...