176 to 200 of 258 API Design Jobs in London

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 ...

Hybrid Build the AI systems our users actually experience. We're looking for a dynamic AI Engineer (5+ years) to design, build, and deploy autonomous, user-facing AI solutions - LLM-powered applications, agentic workflows, and intelligent systems that perform reliably at scale, not just in a demo. What … Degree in Computer Science (or equivalent) with strong AI/ML/NLP foundations Strong Python skills, familiarity with Java/Kotlin, and solid API design experience Hands-on experience with LangChain, LangGraph, and LLM APIs (OpenAI, Anthropic, etc.) Skilled in prompt engineering and orchestrating AI agents/ ...

regulatory burdens. We serve Tier 1 banks across Europe, North America, and Asia. We are looking for a Mid‐level Backend Engineer to help design, build, and scale our regulatory reporting platform. You’ll own features end‐to‐end — collaborating directly with product to shape requirements, and with … week. Some travel may be required. Suade is an equal opportunity employer. All qualified applicants will receive consideration for employment without bias. Responsibilities Design, build, and ship features independently, from technical design through deployment Maintain and lead the improvement of existing features within the application Write efficient, well ...

applications. Define and maintain reference architectures, principles, standards and reusable patterns while managing security, data, accessibility, operational and lifecycle risks. Chair or lead proportionate design assurance, record significant decisions and ensure exceptions, risks, technical debt and dependencies have clear owners and treatment plans. Advise leaders on architectural options, benefits … coaching architects and enhancing architecture practices within multidisciplinary environments. Highest-signal resume keywords Technical Architecture Leadership Microsoft Power Platform Expertise Cloud-Based Application Ecosystem Design Architecture Governance and Risk Management Coaching and Professional Development ATS Optimization Keywords Hard Skills Technical Direction Setting Architecture Governance Cloud Architecture API Design ...

writing readable, testable, and maintainable code. Solid programming skills in at least one backend language (Elixir, C++, Python, Ruby etc). Strong understanding in API design (RESTful or GraphQL). Good understanding in SQL. Willingness to learn new languages/technologies. These are our ideal requirements ...

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 ...

than on a purely backend squad. Strong commercial C#/.NET experience, with a solid grasp of SOLID, event‐driven architecture and DDD RESTful API design and SQL skills Cloud‐native Azure development Enough frontend fluency to review React/TypeScript work, even if you're not hands ...

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+ ...

Responsibilities Help define and deliver the future vision for attribute reputation services, driving simplification and consolidation where appropriate. Design and develop high-volume, high-availability, low-latency backend services. Enhance and optimise existing applications and services. Support incremental re-architecting initiatives to reduce technical complexity and improve maintainability. Develop … clean, testable and maintainable code using Scala and modern engineering practices. Design, build and maintain secure APIs, databases and applications. Collaborate with Product Owners, Business Analysts, Data Engineers and wider technical teams to deliver effective software solutions. Contribute to service support and operational excellence within a "build ...

strong emphasis on defining the future product and platform experience, patterns, and contribution pathways that will enable federated scale over time.ML Engineers – Responsibilities & SkillsResponsibilities\* Design and build MCP servers and tools that expose enterprise systems and workflows to AI agents.\* Implement Skills that orchestrate tools, data, and reasoning into … repeatable, governed workflows.\* Contribute to the LSEG AI Assist agentic harness, including planning, tool‐calling, and orchestration logic.\* Build secure API wrappers where backend systems lack suitable authentication or entitlement models.\* Work closely with product teams in a “build for” capacity, transferring knowledge and establishing reusable patterns.\* Shape ...

stability. Your responsibilities will be varied and impactful, offering a dynamic and challenging work environment. A fundamental aspect of this position is the design and construction of robust, scalable, and high-performing code. You will be instrumental in building the platform that opens the door to all our current … experience. You are a collaborative Software Engineer with proven professional experience in Javascript/Typescript , React , and Node.JS , you possess a strong understanding of API design , consumption, and client-side logic. You are proficient in writing unit and integration tests and have experience with NoSQL databases like Mongo ...

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 ...

Role Overview ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands‐on delivery of a desktop platform automating and streamlining trading desk workflows. This is a high‐visibility player‐coach role that may evolve to include formal people management. Role Responsibilities … output. Own the technical direction of the ICRV greenfield project, developing high‐performance, scalable, and robust solutions from first principles through to production operation. Design for hard non‐functional requirements: latency and responsiveness budgets as acceptance criteria, crash containment, least‐privilege isolation between sub‐applications. Work effectively with ...

model and tool footprint. This is a high-leverage role tackling complex systems challenges across the entire stack. Runtime, observability tooling, and framework design are three separate specialties. We are glad to hire someone with real depth in a combination of them. What You’ll Build Design … handoffs, state changes, and runtime decisions Develop clear Python APIs, libraries, and DSLs with stable extension points for tools, backends, and new execution models Design scheduling, placement, backpressure, resource accounting, sandboxing, permissions, and isolation for secure tool execution at scale Develop tooling for trajectory collection and visualisation, performance profiling ...

executes complex, multi-leg synthetic strategies on behalf of institutional clients.**Role Overview**ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high-visibility player-coach role: you will apply … output.* Own the technical direction of the ICRV greenfield project, developing high-performance, scalable, and robust solutions from first principles through to production operation.* Design for hard non-functional requirements: latency and responsiveness budgets as acceptance criteria, crash containment, least-privilege isolation between sub-applications.* Work effectively with ...

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 ...

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, build, test, and maintain reliable software components that deliver high-quality customer and business outcomes.Translate product and technical requirements into maintainable solutions, applying sound engineering … role.Experience owning and delivering features or components within a service or defined technical area.Proficiency in software development fundamentals, including coding, testing, debugging, version control, API design, data modeling, and low-level system design.Experience working with cross-functional partners to deliver, operate, and improve production software.Preferred Qualifications:Experience designing ...

team that executes complex, multi-leg synthetic strategies on behalf of institutional clients.Role OverviewICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high-visibility player-coach role: you will apply … C#/.NET (LTS): back-end services with ASP.NET Core.Experience designing and delivering event-driven, service-oriented back-end systems (message brokers, async workflows, API design) in a production trading environment.Experience building desktop applications that host web content (e.g., Electron, Tauri, or custom .NET host); comfortable with WebSocket ...

Software Engineer with senior-level expertise to architect and implement scalable, secure frontend and fullstack platforms. You will lead architecture decisions, drive design system adherence, and mentor teams across the software delivery lifecycle. The role focuses on modern frontend tech such as React/TypeScript, API design ...

focused on building a new platform that sits above its existing search technology stack. The project will involve creating a lightweight abstraction layer and API architecture that simplifies the user experience, whilst providing a foundation for future search platform evolution. This is an opportunity to work on a greenfield … quality solutions. Key responsibilities include: Designing and developing .NET Core services and APIs Building abstraction layers between front-end applications and search technologies Developing API services Working with Azure cloud services Designing and maintaining SQL databases Collaborating with senior stakeholders and engineers to refine requirements Contributing to architecture ...

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 ...

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 ...

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 ...

building an automated lab that lets AI agents run biology experiments. We're entering the era of agentic science where AI models can now design novel proteins, propose hypotheses, and iterate on experimental results. But they can't run the experiments themselves - that's still a manual, months-long … biotech today. Our automated lab is powered by a deep software + hardware stack: lab instruments worth millions of USD reverse-engineered into API-controllable hardware, dozens of devices orchestrated through complex workflows, full observability on everything that happens in the lab, processing pipelines for messy physical-world data ...

development lifecycle. You'll help establish a robust security culture as we unlock Granola for the next 100x users. In this role, you will: Design and implement security features within the Granola app to protect user data and strengthen the product's security posture Leverage AI-assisted tooling … security posture Your background looks something like: Extensive experience building production software, with hands‐on exposure to security‐sensitive work (auth, data handling, API design, encryption or similar) and a genuine interest in going deeper into application security Comfortable with secure coding practices and at least ...