151 to 175 of 235 API Design Jobs in London

role. What you build in year one shapes the product for years. KEY OUTCOMES Own the architecture of Steven.com's most complex systems, from design through production and long-term evolution Set the engineering standards, patterns, and abstractions the rest of the team builds on Architect the AI-native … core of the product: LLM-powered workflows, intelligent pipelines, and agentic systems that don't exist yet Make the final call on high-stakes design decisions and catch systemic risk before it becomes debt or downtime Mentor senior and junior engineers, raise the bar through code review and architectural ...

frontend) and Node.js (backend). Build and integrate backend services and APIs using Python with a web framework (e.g. Django, Flask, or FastAPI). Design, query, and manage relational and NoSQL databases (PostgreSQL, SQL, MongoDB). Work on machine learning tasks including object detection, model training, and deployment. Deploy … detection, model training, and deployment (not just coursework or personal projects). Cloud: Basic working knowledge of AWS. Nice to have Exposure to REST API design and integration. Familiarity with version control (Git). Understanding of basic DevOps or CI/CD concepts. Role details Job title: Junior ...

following key skills: - At least three years commercial scala programming - Strong framework experience (Akka, Play etc) - Relational database experience - PostgreSQL - MongoDB, NoSQL - RESTful API design and integration experience - Solid unit test understanding - Spec2, scalaTest etc - Experience working in a TDD/BDD driven environment - Containerization experience - Docker, Kubernetes … well-established friendly team then please apply now to be considered and for further details. Scala Developer Up to £85,000 Scala, REST Api, NoSQL, TDD/BDD, functional programming, CI/CD, Play, Akka ...

high-quality features within a cross-functional delivery team. You should have 2+ years of commercial experience in Angular or Python, with strong REST API design skills and familiarity with modern Angular versions. Experience with Docker, Kubernetes, and CI/CD is a plus. #J-18808-Ljbffr ...

lead frontend architecture in React and TypeScript, set the quality bar for components, state management, and performance. And you don't stop there. From API design to cloud infrastructure (AWS), you ship complete, polished features end to end, including AI-powered ones built on LLM APIs, prompt engineering ...

lead frontend architecture in React and TypeScript, set the quality bar for components, state management, and performance. And you don't stop there. From API design to cloud infrastructure (AWS), you ship complete, polished features end to end, including AI-powered ones built on LLM APIs, prompt engineering ...

lead frontend architecture in React and TypeScript, set the quality bar for components, state management, and performance. And you don't stop there. From API design to cloud infrastructure (AWS), you ship complete, polished features end to end, including AI-powered ones built on LLM APIs, prompt engineering ...

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+ ...

product platform. You will develop new modules and enhance the internal/client UI dashboarding toolkit, aligning with WCAG AA accessibility and a growing design system. You’ll work on API design, security considerations, and real-time UX improvements, collaborating with BAs, PMs, and cross-functional teams ...

core platform team, you will be responsible for writing clear, tested, documented code that delivers real business value. You will be involved in creating API’s that developers (both internally and externally) really want to use. We’re a small nimble team, so you’ll be expected … only internally but for 3rd party vendors and the public. Some big pieces of work at the moment include: Building and maintaining our current API, starting to move towards microservices, the launch of our Flyt platform (and all of the 3rd party Hospitality integrations that go with it) Qualifications ...

seasoned technical leaders. What matters is how you think, build, and ship. You'll take end-to-end ownership of features from architecture design to measurable impact — shipping code that directly moves revenue, retention, or product velocity. You'll design clean abstractions in ambiguous environments, evolve systems into … just how. We care about outcomes, not activity. What We're Looking For You've built and shipped real systems. You understand data modelling, API design, system trade-offs, testing, and reliability. You know how to move fast without creating chaos. You're strong in at least ...

it. In this role, you will: Own features end-to-end across the full stack (you could be leaning either frontend or backend), from API design to React interfaces to database migrations Ship real, user-facing product that reaches vets and pet owners every single day Help shape … engineering team works as we scale.. Early hires leave fingerprints here Collaborate closely with product and design, moving fast and debating well Take on real ownership and responsibility from day one: no lanes, no waiting Your background looks something like: Engineering experience in tech and product-driven environments Strong ...

each play a role in shaping Augur's product, value to customers and culture as we grow. We are looking for someone who can design and build the distributed systems, storage infrastructure, and platform primitives that underpin Augur's sensor integration product. You'll work across the full backend … surface: from stream processing and storage, to API design, data pipelines, and service architecture, in a Rust stack with Python at the platform API boundaries. You’ll be responsible for building robust, well-abstracted systems that scale with the demands of a growing integration and customer base ...

engineer who lives and breathes Laravel. You'll build APIs that process millions of Stripe transactions, optimize MySQL queries that make databases purr, and design data pipelines that never miss a beat. You'll work on real problems: handling webhook storms from Stripe, making complex analytics queries … together, learn from them, and then grab a beer. What You'll Do Build and maintain Laravel APIs powering our web and mobile apps Design MySQL schemas and write migrations that keep data integrity rock-solid Process millions of Stripe webhooks using AWS Lambda and SQS queues Optimize MySQL ...

fraction of the cost of developing these systems independently. Backed by leading venture capital investors and engineering partners, we are rapidly scaling the design, production, and deployment of the satellites, ground systems, and network infrastructure that will power Meridian's next-generation constellations. Joining Meridian means working … part of a close-knit, collaborative team that thrives in a fast-paced, innovative environment, where your work directly advances the design, development, and deployment of satellite constellations that governments and enterprises around the world will depend on for secure, resilient, and sovereign connectivity. Your Mission on the Team ...

heart of immersive, physical learning and play. You implement the game formats designed by our content team, in close partnership with our engineering and design teams. You combine our many device capabilities to make delightful, surprising experiences: Using audio, voice, display, light, haptics, and sensing of physical objects. … company to be the place where you do your best work: With autonomy, curiosity, optimism, and playfulness. What You’ll Work On Experience Design and Implementation Implement the game formats and experiences our content team designs Turn rough prototypes into robust, replayable experiences Design abstractions that allow ...

joining an established team where you’ll have the opportunity to work alongside other Junior and experienced developers, contributing to the design and development of new applications and features, and help maintain and improve existing systems. Responsibilities: Develop, test, and deploy efficient, scalable, and maintainable applications using C# … . 2 – 5 years of professional experience in backend development. Strong proficiency in C# and .NET Core (latest versions). Solid understanding of RESTful API design and integration. Familiarity with CI/CD pipelines and Git for version control and continuous integration. Excellent problem-solving and analytical skills ...

finance). Ability to speak the language of business leaders and connect operational bottlenecks to strategic AI solutions. Software/Data Engineering: Python proficiency, API design, SQL, data integration, and ML/AI libraries (PyTorch, TensorFlow, scikit-learn, XGBoost, Hugging Face Transformers). Agentic AI Systems: Hands … Earth Is Our Future—drive every decision. About Us: Celonis is the trusted platform to industrialize Enterprise AI, empowering organizations to analyze, design, and operate AI-driven processes. The Celonis Platform is powered by the Celonis Context Model, which combines process data, business knowledge, and intelligence to create ...

within Moody's compliance platform. You will partner with full-stack, ML and AI engineers, own features through the full SDLC, and contribute to API design, testing, CI/CD, and secure integrations while shaping the user-facing experience. #J-18808-Ljbffr ...

users You're excited to work with technologies such as React, NodeJS, TypeScript, React Hooks, Docker, Kubernetes Very good understanding of APIs design and platform performance. Experience with service oriented architecture. Experience with defining and upholding SLOs/KPIs. Experience with data-driven product development: analytics, A/ ...

platform that thousands of developers build on. This is a role with real scope. You'll help define what a real-time avatar API should be, the surface developers integrate against, the experience end users feel, and the commercial model that makes it a business. You'll work directly … with the engineering and research teams building the real-time avatar stack, and with the design partners already live in the beta. The problem you're solving Today, a developer who wants a lifelike, real-time avatar in their product has to stitch together a streaming pipeline, a rendering ...

latency, and reliability across distributed systems. Familiarity with Docker, Kubernetes, and gRPC will be highly beneficial. You will own end-to-end responsibilities from API design to observability and scaling, ensuring robust deployment of billions of tokens per minute for developers worldwide. #J-18808-Ljbffr ...

technologies, ideally React/Redux and Typescript A solid understanding of real-time messaging on the Web, including low level protocol and API design Exposure to the following would be advantageous: RxJS, Webpack, Storybook & Websockets Knowledge of Java would be beneficial but is not a necessity Passion … Interaction design Strong communication skills Relevant academic qualifications, including a college degree in computer science or equivalent Some knowledge and experience within the financial industry #J-18808-Ljbffr ...

efforts through incremental re-architecting - eg reducing the number of technologies that are required to support the pipeline and using managed services where appropriate. Design and develop clean functioning, testable code on the Back End, write effective APIs, develop and manage well-functioning databases and applications with security … Collaborate with the product owner, business analyst, data engineers and the wider teams to ideate software solutions Knowledge and experience Security clearance (SC-level) API design Data analysis Databases AWS suite experience Awareness of Site Reliability Engineering and support Skilled at returning services to good states in outage ...

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious … objectives. The role emphasizes secure, observable, and resilient systems, with leadership in code reviews, API design, and deployment across distributed environments. #J-18808-Ljbffr ...