151 to 175 of 201 API Design Jobs in the UK

with wealth management platforms such as FNZ, Avaloq, SimCorp, or similar systems Knowledge of financial markets, investment products, and portfolio construction principles Familiarity with API design and integration patterns in financial services Experience with user research methodologies and customer journey mapping Understanding of modern web technologies and their ...

software engineering, debugging, testing and production deployment skills. Experience integrating AI capabilities into applications, including LLMs, RAG or agentic workflows in production. Understanding of API design, authentication, authorisation, SSO/OAuth2 and enterprise integration patterns. Ability to work with imperfect requirements, investigate real business problems and adapt solutions ...

Client as required Experience: 10+ years in enterprise integration Role summary You will be the Espire face of the Client account. You lead integration design and delivery on Azure APIM, own the relationship with LUs programme team and the Salesforce SI (Creation), and coordinate the offshore team. The role … hands-on and client-facing and needs someone confident in a politically complex university environment. Responsibilities Lead integration design, build and delivery across all in-scope systems (Student management system, Unit4, Kinetics Kx, Moodle and others) on Azure APIM. Be the primary Espire point of contact and run stakeholder ...

DescriptionAs our AI practice scales, we are seeking an experienced AI Architect/Engineer to act as the senior technical authority shaping how we design and deliver next-generation AI solutions. This is a role for someone who has moved beyond building individual models to architecting entire systems: agentic … ambiguous business problems into robust, deployable architectures. As engagements mature, you will provide the technical oversight that keeps delivery teams aligned to the original design intent. Your influence will be felt in pre-sales conversations, solution blueprints, and the technical standards that define how our practice builds. This ...

Cloud and Order Management capabilities to support our clients retail and service operations. You will define technical standards, ensure best practices, and guide the design of integrated solutions that enhance customer experience and operational efficiency. Success in this role means delivering secure, scalable, and high-performing platforms that enable … solutions, ensuring alignment with enterprise standards. Collaborating with business and technical teams to translate requirements into scalable, secure, and high-performing solutions. Leading technical design sessions and providing guidance to development teams on best practices and integration patterns. Defining and maintaining architectural documentation, including data models, integration diagrams ...

their systems.As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack … have experience in software testing and high-reliability qualification, as well as software engineering and software project management practices.The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills ...

stand-ups ensure that our engineers stay connected and aligned. As a Principal Engineer, you’ll play a visible, strategic role in driving system design and architecture decisions, mentoring team members, and helping our teams deliver high-quality solutions at scale for one of the UK's most used … least one of these platforms (Swift, Xcode, and Instruments for iOS; Kotlin, Jetpack, Android Studio for Android). Strong understanding of unit testing, RESTful API design, and a commitment to refactoring and regression test automation. Experience mentoring and coaching engineers, with a proven ability to share technical expertise ...

todayDrive the evolution of the platform toward a modular, agentic-ready architecture - opening the platform to AI agents, decomposing the stack into clean API surfaces, and building the infrastructure that retailers and partners can build on top ofChampion AI-native ways of working within engineering itself - agentic coding tools … commercial teams, and the marketTechnical DepthStrong grounding in modern software architecture - multi-tenanted, cloud-native distributed systems, reliable transaction processing patterns for mobile applications, API design, platform decomposition, and event-driven patternsA genuine, well-formed point of view on agentic commerce and what AI agents mean for physical ...

over how the platform evolves and will be given the opportunity to be involved in all aspects of the systems you work on, from API design and back-end architecture, through to deployment and supporting systems in production. Skills: • C#, .NET, PostgreSQL, React • AWS (S3, RDS, OpenSearch) • GraphQL ...

modern app architectures like Unidirectional Data Flow, Dependency Injection, Structured Concurrency with Kotlin Coroutines, amongst others Desire to write testable code Understanding of REST API design Strong product mindset and passion for user experience, with a focus on prioritising work that addresses user needs and making data-driven ...

modern app architectures like Unidirectional Data Flow, Dependency Injection, Structured Concurrency with Kotlin Coroutines, amongst others Desire to write testable code Understanding of REST API design Strong product mindset and passion for user experience, with a focus on prioritising work that addresses user needs and making data-driven ...

modern app architectures like Unidirectional Data Flow, Dependency Injection, Structured Concurrency with Kotlin Coroutines, amongst others Desire to write testable code Understanding of REST API design Strong product mindset and passion for user experience, with a focus on prioritising work that addresses user needs and making data-driven ...

systems, or Engineering Extensive hands-on experience (10+ years) in software engineering within modern digital environments. Demonstrated expertise with cloud-native architectures, distributed systems, API design, and modern frameworks. Deep understanding of DevOps, CI/CD pipelines, and environment automation. Strong diagnostic and problem-solving skills for complex ...

users, test market fit and balance fast iteration with sound technical foundations. Deliver end-to-end solutions across the stack, from backend architecture and API design through to frontend polish, putting useful products in the hands of global users. Build clean, maintainable software from ambiguous executive direction, with ...

critical changes, setting the standard for quality, performance, and maintainability.Provide hands‐on expertise in Java‐based systems, including concurrency, performance tuning, memory management, and API design.Non‐Functional Ownership & System PerformanceTake a leading role in defining, implementing, and validating non‐functional requirements, including system latency, throughput, scalability, and reliability.Drive solutions ...

changes, setting the standard for quality, performance, and maintainability. Provide hands‐on expertise in Java‐based systems, including concurrency, performance tuning, memory management, and API design. Non‐Functional Ownership & System PerformanceTake a leading role in defining, implementing, and validating non‐functional requirements, including system latency, throughput, scalability, and reliability. ...

agent usage and outcomes so we know what improves throughput and quality and what just burns tokens. Treat cost, model choice, and reliability as design concerns.Make build-vs-buy calls. Evaluate models, vendors, and open-source tools against our needs, and choose the path that gets engineers the most … leverage.Lead through influence. Write the design docs, lead technical discussions across teams, and mentor engineers across the org as they adopt agentic workflows.What You'll BringDirect experience driving agentic developer experience efforts. You've driven an initiative that changed how an engineering organization builds software with AI agents. ...

edge-to-cloud data flows using MQTT, CoAP, and related technologies. Build robust solutions capable of handling real-time and high-volume sensor streams. Design Modern APIs and ServicesDevelop secure, scalable REST and gRPC services using FastAPI, Flask, and Node.js. Implement authentication, authorization, observability, testing, and performance monitoring. Ensure … reliability, maintainability, and best-practice API design. Deliver Digital Twin ExperiencesIntegrate real-time operational data with advanced 3D and 4D visualizations. Work with OpenUSD, NVIDIA Omniverse, and Unreal Engine technologies. Create interactive digital environments that represent assets and processes over time. Integrate AI and Machine LearningEmbed AI/ ...

Account users. Collaboration is key to how we operate across the business in this role, and you will work alongside product, design, and analytics teams to create the best tools for our users, helping them manage their cross-currency needs with ease whilst shaping our Account offering. Being … build consistent experiences across our clients native applications and the web and enable features with a customer centric focus. Collaborate closely with product, design (UI), analytics, and other teams across the company to deliver impactful experiences to our client users as part of a cross-functional team. Take responsibility ...

/3Strong C#NET WebAPIDocument oriented databases (MongoDB, DocumentDB or others)GraphQL experience (Frontend/backend)Strong React/TypeScriptSingle Page ApplicationBDD/TDDESTful API design and developmentKnowledge and experience with Git and GithubCloud experience will be gained as they are currently running a massive migration and development project … packages in the market, all inclusive. My client is based in Bath.net core, ASP.NET MVC, razor, c#, sql, mvc, .net, javascript, greenfield, , data, analytics, api, jquery ...

core business systems. This is a hands-on development role working closely with other Developers, Business Analysts, Testers and Product Owners to design, build and support high-quality, maintainable software. In particular: Designing and developing robust Modern .Net (C#) and Angular solutions that support critical business processes Building well … knowing how to manage those risks. SKILLS REQUIRED You will be comfortable working in a collaborative development team, understanding business requirements, contributing to technical design decisions and delivering well-structured code that is reliable, maintainable and easy to support. You will be able to demonstrate: Strong commercial experience with ...

translate analytical requirements into scalable, maintainable software. Guide architecture, code reviews and engineering standards. What you'll bringStrong production Python and backend engineering experience. API design, cloud services and containerised workloads. Job orchestration, message queues and SQL integration. CI/CD, monitoring, security and production troubleshooting. An understanding ...

Developer to join a specialist engineering team delivering secure, mission-critical technology for UK National Security customers. The role offers the chance to design, develop, deploy and maintain cloud-native applications and services on Amazon Web Services (AWS), supporting systems that contribute to the UK's national security … takes ownership of the full software delivery lifecycle and wants to apply their technical skills to work with a meaningful national impact. Key Responsibilities Design, develop, deploy and maintain cloud-based applications and services using AWS. Build secure, scalable and resilient cloud solutions that support critical National Security customer ...

settlement infrastructure, merchant-facing experiences, and developer-first toolkits, you will own the end-to-end product lifecycle—from long-term strategy and architectural design to global roadmap execution. In this role, you will bridge our online payments-for-platforms suite (enabling marketplaces and SaaS platforms to collect, route … card-present ecosystems (POS/SoftPOS, EMV/NFC standards, terminal management).Proven ability to engage deeply with engineering on complex architectural discussions covering API design, distributed ledgers, high-throughput transaction processing, and hardware/software interfaces. Exceptional analytical rigor with a track record of structuring complex ecosystem ...

Significant impact on a function and/or the business through making decisions that determine technical approaches and strategies for the area. Position Objective: Design, build and extend backtesting infrastructure that drive production code paths with historical data. This is in the context of automated market-making models … skills in preferably Rust although C++ and Java would be considered. KDB, Python, SQLExtensive experience in messaging and data serialization technologies, market data processing, API design, latency optimization, code testing, build and deployment toolsExperience handling large volumes of disparate data sources, including integration and normalizationExperience in taking ownership ...