1 to 25 of 226 API Design Jobs in London

engineering execution, platform strategy, operational excellence, and talent development, ensuring teams deliver reliable, scalable, and high-quality mobile experiences. Working closely with Product, Design, Architecture, Security, Quality, and Operations partners, this leader will help shape the future of Expedia's mobile ecosystem, driving engineering best practices, modern mobile architecture … engineering teams delivering reliable, scalable native applications and shared mobile platform capabilities across multiple product domains. Set technical direction for mobile architecture, including system design, low-level design, API design, data modeling, integration patterns, and maintainable implementation practices across iOS and Android. Build and develop ...

believe in the imaginative application of art and science to create beautiful ideas, products and services. With an entrepreneurial and collaborative approach, we design and build adaptive digital products, services and experiences that capture the imagination and deliver impressive returns for our clients. We are looking for a senior … technical leadership, architecture and team guidance. You will lead the technical direction of complex client programmes across MACH architectures and production Generative AI; spanning Design to Code workflows, solution design and API contracts through to cloud infrastructure, deployment and ongoing operation. You will own architecture decisions, write ...

support to do their best work. Join us and build for travelers everywhere. Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community … loyalty, app and web experiences, and the platform capabilities underneath them. You will own technical direction and delivery for your team, drive system and API design for performance-critical, high-traffic customer-facing services, and partner closely with Product, Design, Data, Marketing, and Platform teams in small ...

best out of them and we'll look to you to apply good judgement on what lands in main. In this role, you will: Design, develop, test, deploy, and maintain reliable software services and applications that deliver measurable outcomes for customers and the business. Apply software engineering principles across … development lifecycle, including low-level system design, API design, data modelling, implementation, testing, and code review. Own technical solutions within a service or defined technical area, making sound engineering decisions that balance maintainability, scalability, reliability, and delivery. Collaborate across engineering and partner teams to define requirements, resolve ...

that build loyalty and traveler satisfaction. In this role, you will: Develop, evaluate, and improve machine learning models and algorithms for Content AI applications. Design and implement end-to-end machine learning solutions, including data preparation, feature engineering, model training, validation, deployment, monitoring, and continuous optimisation. Apply statistical analysis … technical direction. Collaborate with engineers, product managers, applied scientists, and domain experts to translate ambiguous business problems into scalable ML solutions. Contribute to system design, low-level design, API development, and data modelling for production machine learning systems. Build and operate production solutions using technologies such ...

strategic global solutions. Leverage your advanced architecture capabilities and collaborate with colleagues across the organization to drive best‐in‐class outcomes. You will design the data and API foundations that connect identity, authority, ownership, and permission to workload deployment on IaaS platforms and hypervisors. This is a senior … individual contributor role, focused on rigorous data modeling, software and API design, and identity architectures in a large, regulated financial environment. You will define canonical models and service contracts, ensure designs meet regulatory and control requirements, and partner closely with platform, engineering, and development teams. Job responsibilities Defines ...

Stack Senior Developer who combines strong hands‐on engineering expertise with end‐to‐end technical delivery leadership. You will lead engineering teams, shape solution design, make pragmatic technology decisions and remain close enough to the code to assure quality and unblock delivery. In this highly visible role, you will … strategy and solution shaping through engineering delivery, transition to live service and ongoing optimisation In our team, you will: Engineering and architecture Lead the design and hands‐on development of enterprise applications using C#, .NET, ASP.NET Core, Web APIs and modern distributed application patterns. Design responsive, accessible front ...

every layout or content adjustment. In this role, you will: Develop React-based user interfaces and backend capabilities. Build, integrate, and contribute to API design decisions. Own features from understanding requirements through delivery, with support from teammates and product management. Collaborate with product management, backend and domain service … rollout of server-driven UI, enabling card layouts to be updated through configuration. Migrate traffic from legacy systems to the new platform. Apply API design considerations, including additional calls, traffic management, and error handling. Deliver reliable software with a rigorous development approach and a high quality bar. Experience ...

team works with top tier global financial institutions and major tech companies to offer Wise products and services directly to their customers. Through our API , we help partners to architect and build integrations to our world class-leading international finance products, which in turn improves Wise Platform by increasing … improve turnaround times. Designing and developing innovative new features that expand the functionality of Wise's services and exposing these features through the public API, enabling seamless integration with partner systems and empowering them to leverage the full potential of Wise's platform. Diagnosing and resolving complex technical issues ...

engineering culture, and what algo1 becomes. The Role This role reports to our Head of B2B Product, James. Working with him and our product, design, mobile, and machine-learning teams, you'll design and build the web experiences that redefine how brands and retailers serve their shoppers. … stay fully accountable for what you ship. What You’ll Own Full-stack delivery end-to-end. Own substantial features from product conversation through design, implementation, and iteration in production. Most of the weight sits in the frontend, but you go as far down the stack as the feature ...

Data, AI, and real-time decision-making we turn energy complexity into growth opportunities for our partners. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable and affordable. With teams across Europe, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan … services. You move faster than a traditional sprint by using AI to handle the "heavy lifting" of boilerplate and logic generation. Technical Asset Development: Design, build, and maintain reusable mock services in Node.js/TypeScript. You’ll implement contract-first APIs (REST/GraphQL), manage AWS deployments (API ...

DeveloperApply: London, United Kingdom: Full time: Posted 11 Days Ago: JR100464## Job Description:**Role Overview**We are seeking a Core Platform Developer to help design and build shared engineering foundations used across the firm. This role is focused on backend and platform capabilities that improve how internal teams build … patterns, and increase the reliability of internal systems. This person should be comfortable working across multiple areas of the stack, from service frameworks and API enablement to observability, governance, and developer workflows. This is a high-ownership role within a global, fast-moving engineering environment.**Key Responsibilities*** Design ...

APIs and services that handle millions of requests daily.This role offers the opportunity to work on challenging problems including distributed systems, data processing, and API design. You'll collaborate with frontend engineers, data scientists, and infrastructure teams to deliver reliable, efficient backend solutions. Key Responsibilities Develop and maintain Python … based backend services and APIs Design and implement database schemas and data models Build scalable microservices architecture Integrate with third-party services and APIs Optimize application performance and database queries Write comprehensive tests and documentation Participate in code reviews and architectural discussions Collaborate with frontend teams on API ...

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 ...

organizational readiness—not just technical implementation Translate business objectives into implementation strategies and communicate technical constraints in business language executives understand Technical Solution Design & Architecture Guidance Lead or co-lead design workshops with customer technical teams to architect end-to-end solutions: integration flows, data migration strategies, workflow … design Design integrations between Rocketlane and enterprise systems (NetSuite, Salesforce, Workday, SAP, HRMS, CRMs, data warehouses) Evaluate integration approaches and make build-vs-buy recommendations: native connectors, iPaaS platforms (Workato, Boomi), custom API development Review and validate solution designs created by Solution Architects; push back when designs ...

play a pivotal role in shaping our technical domain to power all Expedia Group’s brands and product lines. In this role, you will: Design and implement scalable, robust, and maintainable systems and services across multiple domains, with a focus on reliability and performance. Develop complex application logic, APIs … years of relevant professional experience. Strong software engineering fundamentals—data structures, and algorithms in Java or Kotlin, with familiarity across the JVM stack, system design, and distributed systems, and can understand highly complex systems, design moderately complex services, and guide integrations across teams within the business unit. Building ...

hands-on technical leadership position in the making. You will work across product management, engineering, and client-facing discussions to document and evolve the design of a distributed ledger-based post-trade platform operating within regulated financial services. You will initially contribute as our technical documentation lead while progressively … taking ownership of system-level architecture, solution design, and technical direction. This role is ideal for someone who wants to: Move from senior technical writer or senior engineer to architect; Work on real financial market infrastructure problems; Combine deep technical thinking with business context; Shape a product ...

help to build a better working world. The opportunity We are seeking a Manager, AI Architect specializing in generative AI to lead the design and delivery of GenAI solutions for our clients. This is a hands‐on delivery and technical management role: you will own the architecture … your solutions run reliably in production. You will work closely with client teams and communicate technical decisions clearly to project stakeholders. Your key responsibilities Design and Delivery of Engagements Own the architecture and technical delivery of a GenAI solution area or workstream, from design through production rollout. Lead ...

List of key deliverables/responsibilities Delivery of Complex Engagements Own the architecture and technical delivery of complex GenAI engagements or major workstreams, from design through production rollout. Lead cross-functional delivery teams (architects, engineers, data specialists) across the engagement lifecycle. Ensure solutions are enterprise-grade: scalable, secure, resilient … Architect solutions for high-value insurance use cases (claims intake automation, submission triage, document intelligence, underwriting copilots, policy Q&A, contact-center copilots). Design RAG systems at scale: chunking strategies, embeddings, vector stores, retrieval tuning, and grounding to reduce hallucination. Design multi-agent and tool-calling workflows ...

infrastructure that allows clients to launch card programs anywhere in the world through a single integration. You will be responsible for a unified Global API and SDK suite that abstracts the complexity of regional payment networks. Whether a client is launching in Europe, North America, or APAC, your product … will provide a consistent, white-label experience. You will drive both the technical \"how\" (API/SDK design) and the strategic \"where\" (global expansion and regional issuing setups). What you’ll do Unified Global API Strategy: Design and maintain a single, polymorphic API architecture ...

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future … great experience to delight our customers. Our goal is to enhance every traveler's experience and make it better! In this role, you will: Design, develop, and maintain high-throughput, low-latency distributed backend services that deliver efficient, optimal pricing solutions at scale. Implement robust caching mechanisms to enhance ...

level relationships with Restech and Supplier partners, acting as the senior technical face of Tripadvisor in those conversations. Stay genuinely hands-on: dig into API design, integration architecture, and connectivity issues directly, not just from a distance. Lead, grow and mentor a team of tech leads and engineers … changes in remit, priorities or structure. Excellent communication and management skills, with the technical credibility to match. Data/analytical mindset, ability to design and build relevant reports Practicalities This role is remote in the UK, ideally someone based in or around London You'll want to build real ...

real initiatives and develop hands-on expertise. You will collaborate with chief architects and engineers, translate requirements into technical specifications, and contribute to API design, data flows, and cloud deployment planning across AWS, Azure, and Google Cloud. #J-18808-Ljbffr ...

Build the web platforms and APIs that power Talksign's ecosystem, from developer tools to enterprise dashboards. What you'll do Design and build scalable web applications and APIs Create developer-facing tools and documentation Implement secure authentication and data management Optimize performance and reliability of backend services Contribute … 4+ years of full-stack development experience Strong proficiency in TypeScript, React, and Node.js Experience with cloud platforms (AWS, GCP, or Azure) Understanding of API design and database systems Commitment to code quality and testing Nice to have Experience with real-time communication (WebRTC, WebSockets) Knowledge of accessibility ...

/B testing, directly impacting our business results. We collaborate closely with the analytics, product, and engineering teams. In this role, you will: Design, develop, and apply machine learning solutions to real-world personalization, product, and business problems, translating ambiguous opportunities into scalable models, experiments, and production-ready capabilities. … strong attention to measurable impact. Partner closely with engineers, product, and business stakeholders to integrate machine learning solutions into services and workflows, including system design, API design, and data modelling considerations where applicable. Use strong technical judgment to select appropriate methods, validate outcomes, and improve model performance ...