151 to 175 of 214 FastAPI Jobs in London

required) Key Responsibilities On the backend, you will design, build and maintain scalable services and RESTful/GraphQL APIs using Python with Django or FastAPI, writing clean, well-tested, production-grade code with a focus on reliability and performance. You will design and implement data models working with PostgreSQL … more years, in software engineering with a strong track record of delivering production systems. You have backend proficiency in Python with Django or FastAPI, strong frontend experience with React and TypeScript including component architecture, state management and modern tooling, and a solid understanding of relational databases, PostgreSQL preferred, covering schema ...

doing On the backend, you will design, build and maintain scalable services and RESTful/GraphQL APIs using Python with Django or FastAPI, writing clean, well-tested, production-grade code with a focus on reliability and performance. You will design and implement data models working with PostgreSQL and cloud-native … more years, in software engineering with a strong track record of delivering production systems. You have backend proficiency in Python with Django or FastAPI, strong frontend experience with React and TypeScript including component architecture, state management and modern tooling, and a solid understanding of relational databases, PostgreSQL preferred, covering schema ...

ensure OneSuite’s backend systems are scalable, reliable, secure, and performant. Responsibilities Backend Architecture & System Design Architect distributed backend services and APIs using Python, FastAPI, Node.js, or equivalent frameworks. Design modular, observable, and scalable backend components for orchestration, data services, and platform integrations. Define patterns for microservices, domain boundaries, caching … decisions across charters to ensure consistency and maintainability. Qualifications Demonstrable backend engineering experience, with architectural ownership over services or distributed systems. Expertise in Python, FastAPI, Flask, or Node.js and modern backend development patterns. Strong understanding of microservices, concurrency, async programming, and event‐driven architectures. Proficiency with SQL and NoSQL databases ...

Ersilia in London is seeking a Senior Backend Engineer to build production Python backends (FastAPI) powering AI features for professional investors. You will own APIs, design orchestration for agentic workflows, and work with PostgreSQL and ClickHouse, shipping features from sketch to live production. The team is small and highly impactful ...

moving fintech environment. You will ship web apps and automation that empower Ops—driven by data, AI, and scalable architectures. You’ll work with FastAPI, Python, and modern JS (React/Next.js), collaborating across Product, Data Science and Analytics to deliver reliable, high‐impact tooling for customer operations. #J ...

engineering team. You will help build and evolve the backend systems powering our wealth platform, designing secure, scalable APIs and internal tools using Python, FastAPI, SQLAlchemy, and related technologies. Collaborate with cross-functional teams, own complex problems, and deliver production-ready code with strong emphasis on maintainability, observability, and reliability. ...

robust systems across its core platform. You will work in a hybrid role, collaborating with product managers, data scientists, and DevOps, while leveraging Python, FastAPI, React, and cloud technologies to enable enterprise-wide AI adoption. #J-18808-Ljbffr ...

global debt markets. A Backend/Full-stack engineer is sought to design systems, build APIs, and advance data processing within our Python stack (FastAPI/Flask) on a hybrid UK-based team. You will develop backend services, contribute to a broad range of platforms and collaborate with cross-functional ...

design, develop and document a web-based Data Repository, including back-end services, APIs and front-end applications, using Python and/or JavaScript, FastAPI, SQL and time-series databases, Docker and #J-18808-Ljbffr ...

critical systems Knowledge of pose estimation, SLAM, or visual odometry Strong ability to multitask Familiarity with synthetic data generation and simulation environments Experience with FastAPI or similar backend frameworks #J-18808-Ljbffr ...

Profitable FinTech Scale-Up Hybrid (London) or remote within the UK Up to £160,000 per annum plus stock options Python | Django | FastAPI | AWS | Rust | Postgres | Event-Driven Architecture | Machine Learning Principal Engineer - We're working with a leading fintech scale-up that's transforming how small businesses access finance. ...

business problems, including model validation, performance monitoring, and communication of model limitations. Experience developing internal tools or analytical applications using frameworks such as Flask, FastAPI, or similar. Familiarity with cloud computing platforms (e.g. Google Cloud). Industry Knowledge (marketing and gaming) Understanding of game industry dynamics, including genre-specific sales ...

scaling business Knowledge of FCA compliance/Financial Services/regulated environment preferred Highly motivated to learn about Fundment’s products Technical Expertise: Python: FastAPI, Pydantic, SQLAlchemy, PyTest, Pandas, Numpy Cloud: Experience supporting production systems Security & Compliance: Familiar with secure coding and regulated environments Values Collaborative – Deliver as a team ...

obsessed with the customer, which is how we hold 4.9 on both Trustpilot and Google. The stack: TypeScript on the backend, Python and FastAPI for Jay, Next.js up front, AWS underneath, Claude Code woven through how we build. You won't have used all of it, and you'll change ...

sales startup Kular.ai We’re a 25-person, founder-heavy team (17 ex-founders) Our tech Stack Next.js + Typescript Python (FastAPI) PostgreSQL (But we’re stack agnostic – we believe the best engineers can pickup any tech stack...) And there’s also the perks.... We’re building a high-performance ...

help: Experience in platforms similar to Quartz Lead technologist experience Risk calculation projects Expert-level proficiency in Python and related frameworks ( e.g Django, Flask, FastAPI Ability to collaborate with various technology teams across the bank Benefits of working at the company: UK Private healthcare for you and your family plus ...

explain technical concepts to non-technical users in a clear, empathetic manner. Understanding of web development, with some experience using Python, React, Node, FastAPI, and MongoDB. How we show up Build for the next decade, not next quarter . Our targets are outrageous on purpose. The world's health doesn ...

rate: £400 to £450 Duration: 12 months duration Location: London, Redman Place - onsite 3 days a week. IR35: Outside IR35 Backend Engineer with strong FastAPI and microservices experience, ideally gained in cloud-native environments. Exposure to AI/GenAI products is highly desirable. Candidates should be comfortable owning technical solutions … working within Agile product teams. Experience with PostgreSQL, Docker, GitHub Actions, and modern backend engineering practices is essential. Essential Skills Strong Python development experience (FastAPI, Pydantic, SQLAlchemy, Pytest). Experience with PostgreSQL, Docker, Git/GitHub, GitHub Actions, and microservices. Knowledge of Pandas, NumPy, OpenTelemetry, and cloud-native development. Strong ...

LLMs, RAG, agents and model APIs. Take AI ideas from rapid prototypes through to reliable production systems. Work across Python, React/TypeScript, Django, FastAPI, PostgreSQL and AWS. Improve architecture, engineering standards and delivery practices. Work closely with product, business and engineering stakeholders to solve complex problems. Mentor and support … engineers through pairing, reviews and technical guidance. Make pragmatic decisions around scalability, security, reliability and maintainability. Technology Python | React | TypeScript | Django | FastAPI | PostgreSQL | AWS | Docker | REST APIs | CI/CD | Git AI experience across LLMs, RAG, agentic workflows, embeddings, prompt design or model evaluation is particularly valuable. What Theyre Looking ...

controls across the enterprise. Working with engineers, AI specialists, and operations partners, you will design, test, and deploy AI-powered platforms using Python, FastAPI, AWS, and MLflow, while focusing on reliability, security, and operational readiness. #J-18808-Ljbffr ...

write production-grade code, solve distributed systems challenges, and collaborate with cross-functional teams. The ideal candidate has expertise in Python and frameworks like FastAPI or Node.js, as well as CI/CD experience. This role supports hybrid working, offering excellent benefits including wellness days and flexible working arrangements. #J ...

will upskill data-literate backend engineers, act as the team's data expert, and drive scalable, reusable data pipelines and APIs using Django/FastAPI where appropriate. You'll maintain and evolve the data warehouse with Databricks, champion DataOps practices, and ensure robust, globally scalable data applications across #J ...

Backend Developer to lead technical projects and enhance its web applications. This role requires strong expertise in Python, experience with frameworks like Flask and FastAPI, and the ability to deliver APIs effectively. The ideal candidate will collaborate with various teams, mentor junior staff, and contribute to the automation and improvement ...

mechanics across equities, rates, FX, and commodities Advanced programming and quantitative development skills, with demonstrable proficiency inPython(NumPy, Pandas, SciPy, API frameworks such as FastAPI/Flask) andVBA/Excelfor rapid prototyping, automation, and analytics; working knowledge of C++, SQL, or other quantitative development languages is highly advantageous for platform ...

Virtual Personas Delivery of the Product roadmap Managing a team consisting of a range of skillsets and experience Full stack development, across Python/FastAPI services and React/TypeScript front ends Continuously improving the team's processes for iterative development, including embedding automated testing and CI quality gates into … encouraging our developers Conducting regular 121's, setting objectives and assisting with tailored development plans Our engineering environment includes technologies such as Python (FastAPI), LangChain/LangGraph for multi-agent LLM orchestration, React/TypeScript, PostgreSQL, MongoDB, Redis, Azure (App Service, Container Registry, Blob Storage), Docker, GitHub Actions, and modern ...