FastAPI Jobs in London

26 to 50 of 326 FastAPI Jobs in London

Senior Backend Engineer

London, England, United Kingdom
Hybrid / WFH Options
causaLens
and meeting quality standards. Your remit will include multiple aspects of our multi-service platform, from AuthN to Data Integration and flow orchestration. The broader application stack includes Python, FastAPI, Postgres, Github, Kubernetes, Helm, Terraform, AWS, GCP, Azure and other technologies. A day in the life of the role: Collaborate closely with product managers, team leads and other senior engineers More ❯
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Senior Tools Software Engineer Engineering London

London, United Kingdom
Hybrid / WFH Options
Croud
in secure software development and adherence to best practices (e.g., SOLID principles). Hands-on experience with Python frameworks for building RESTful APIs, such as Django/DRF or FastAPI . Clear and effective communication skills tailored to technical and non-technical audiences. Highly Desirable: Experience with Generative AI and LLMs for delivering advanced solutions Familiarity with diverse database types More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Octopus Legacy
We’re Octopus Legacy: one of the fastest growing tech companies in the country, part of the UK’s most exciting and best-trusted group (you may have heard of some of our sister companies...) and we have a mission. More ❯
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Software Engineer, Enterprise Engineering London, UK

London, United Kingdom
Scale AI, Inc
for Scale's GenAI Platform, enabling businesses to build, deploy, and manage AI-driven agents with robust backend capabilities. Implement scalable APIs and services in Python, leveraging frameworks like FastAPI, to support real-time AI applications and large-scale data processing. Build and maintain full stack web applications using modern frameworks and technologies Next.js, React, TypeScript, and Tailwind. Integrate AI … Ideally, You Have: 5+ years of experience developing backend or full-stack applications, with a strong emphasis on backend engineering. Strong proficiency in Python and backend frameworks such as FastAPI or Flask. Familiarity with frontend technologies (Next.js, React, TypeScript, Tailwind) with an eye for building polished, user-friendly interfaces. Experience making trade-offs between speed and quality in fast-paced More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer, Enterprise

London, England, United Kingdom
Scale AI
for Scale’s GenAI Platform, enabling businesses to build, deploy, and manage AI-driven agents with robust backend capabilities. Implement scalable APIs and services in Python, leveraging frameworks like FastAPI, to support real-time AI applications and large-scale data processing. Build and maintain full stack web applications using modern frameworks and technologies Next.js, React, TypeScript, and Tailwind. Integrate AI … Ideally, You Have: 2+ years of experience developing backend or full-stack applications, with a strong emphasis on backend engineering. Strong proficiency in Python and backend frameworks such as FastAPI or Flask. Familiarity with frontend technologies (Next.js, React, TypeScript, Tailwind) with an eye for building polished, user-friendly interfaces. Experience making trade-offs between speed and quality in fast-paced More ❯
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Senior Python Developer, Backend Developer, Flask

London, United Kingdom
Experis UK
community, contributing to knowledge-sharing initiatives and events. Share your expertise to motivate and mentor your team. Required Skills: Proven experience designing and building REST APIs (ideally with Flask, FastAPI, or similar frameworks). Expertise in designing architectures that meet scalability, reliability, and security goals. Strong problem-solving skills, particularly in product development. Solid understanding of backend best practices, coding More ❯
Employment Type: Permanent
Salary: £90,000
Posted:

Senior Software Engineer– Energy & Resources Analytics Platform

London, England, United Kingdom
Baringa Partners
Be familiar with modern engineering tools (Git, CI/CD), cloud technologies (Azure, AWS), and Infrastructure as Code (Terraform, Pulumi). Experience with various frameworks (React, Angular, Vue, Blazor, FastAPI, Spring Boot, Django, .NET). Confident in architectural decisions and justifying technology choices. Excellent at communicating complex concepts to technical and non-technical audiences. Experienced with agile methodologies (Scrum/ More ❯
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Senior Software Engineer - Energy & Resources Analytics Platform

London, United Kingdom
Baringa Partners LLP
CI/CD), cloud platforms (Azure, AWS), and Infrastructure as Code (Terraform, Pulumi). Familiarity with various frameworks across front-end and back-end stacks (React, Angular, Vue, Blazor, FastAPI, Spring Boot, Django, .NET). Experience designing and justifying architectural choices. Ability to communicate complex concepts clearly to both technical and non-technical audiences. Experience with agile methodologies (Scrum/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Fullstack Engineer

London, England, United Kingdom
Liberty Global
to create a market-leading, scalable, and secure platform. Key responsibilities: Full Stack Development: Develop scalable and secure applications using React.js and TypeScript on the frontend and Python with FastAPI on the backend. Design and implement reusable, modular code for both client and server-side components. API & Microservices Design: Define and build RESTful APIs and microservices using FastAPI that are … by prioritizing customer needs and feedback throughout the development process. Demonstrate enthusiasm, resilience, and a can-do approach to tackling challenges and driving success. Skills & Abilities: Expertise in Python , FastAPI , SQLAlchemy , and React.js . Proficiency with containerization tools like Docker and infrastructure-as-code tools such as Terraform . Familiarity with OCPP/OCPI protocol integration . Experience designing scalable More ❯
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Hedge Fund Trading - Contract Python Developer - Futures, FX, Credit, PnL, Data eng, AWS, Javascript

London, United Kingdom
Scope AT Limited
A passion for learning new skills, including financial concepts and trading workflows. Candidate background - Python development, including: - Scientific libraries (eg, Pandas, Polars, NumPy, SciPy). - Web technologies (eg, Flask, FastAPI). - Data engineering experience. - Familiarity with cloud infrastructure (eg, AWS). Nice-to-Have - JavaScript UI frameworks (eg, React, Vue, Angular). - Docker and Kubernetes. - Previous experience in investment banking More ❯
Employment Type: Contract
Rate: GBP Annual
Posted:

Senior Python Developer, GCP

City of London, London, United Kingdom
Experis
community, contributing to knowledge-sharing initiatives and events. Share your expertise to motivate and mentor your team. Required Skills: Proven experience designing and building REST APIs (ideally with Flask, FastAPI, or similar frameworks). Expertise in designing architectures that meet scalability, reliability, and security goals. Strong problem-solving skills, particularly in product development. Solid understanding of backend best practices, coding More ❯
Posted:

Senior Python Developer, GCP

London Area, United Kingdom
Experis
community, contributing to knowledge-sharing initiatives and events. Share your expertise to motivate and mentor your team. Required Skills: Proven experience designing and building REST APIs (ideally with Flask, FastAPI, or similar frameworks). Expertise in designing architectures that meet scalability, reliability, and security goals. Strong problem-solving skills, particularly in product development. Solid understanding of backend best practices, coding More ❯
Posted:

Full Stack Engineer

London Area, United Kingdom
UMATR
Agile, startup-paced environment with a cross-functional team What We’re Looking For 3+ years of hands-on professional experience in full-stack development Strong experience with Python (FastAPI or similar frameworks preferred) Proficiency with modern frontend technologies— React , Next.js , or similar Previous hands-on experience building with AI, or a strong interest and mindset for learning and growing More ❯
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Full Stack Engineer

City of London, London, United Kingdom
UMATR
Agile, startup-paced environment with a cross-functional team What We’re Looking For 3+ years of hands-on professional experience in full-stack development Strong experience with Python (FastAPI or similar frameworks preferred) Proficiency with modern frontend technologies— React , Next.js , or similar Previous hands-on experience building with AI, or a strong interest and mindset for learning and growing More ❯
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Full-Stack Python Developer, Crisis Simulation Systems

Greater London, England, United Kingdom
Hybrid / WFH Options
Anadyr Horizon
flexibility, we’re looking for someone who can fully integrate into our engineering team during European working hours . What You Bring 2+ years Python experience with web frameworks (FastAPI preferred) React proficiency with modern JavaScript/TypeScript AWS experience: EC2, S3, VPC, Lambda, plus deployment automation PostgreSQL expertise with performance optimization Git workflows and CI/CD pipelines EU More ❯
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ML Engineer

London, England, United Kingdom
RAPP
measurement frameworks Experience with data pipelines from sources like RedShift, SQLServer, Salesforce, Adobe Analytics Experience with AWS, Citrix, Databricks, Airflow, PySpark, web scraping, A/B testing, MLFlow, Dash, FastAPI, NLP, Computer Vision, GenAI, feature engineering Key attributes Attention to detail, curiosity, proactivity Strong communication skills About RAPP We foster an inclusive workplace valuing diversity and individual differences. We support More ❯
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Software Engineer - Go & Python, Ruby or C#

London, England, United Kingdom
Corsearch
s most valuable brands. Tech Stack You'll Work With We're not precious about tools, but here's what we’re currently using: Languages & Frameworks: Go, Python, Django, FastAPI, Node.js, React, TypeScript, RxJS Monitoring: OTel, Coralogix Responsibilities and Duties Collaborate with Product Managers to define and deliver on quarterly objectives Build, improve, and maintain distributed microservices and modern web More ❯
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AI ML Lead Software Engineer - Chief Data & Analytics Office

Westminster Abbey, England, United Kingdom
J.P. MORGAN-1
field 6+ years of experience as a backend or AI/ML software engineer Proficiency in Python with deep experience in building distributed and containerized services (e.g., Flask/FastAPI, Docker, Kubernetes) Strong understanding of ML deployment workflows, feature engineering, and serving architectures Experience building and deploying APIs and ML inference services in production Familiarity with ML model management, versioning More ❯
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Data Engineer

London, England, United Kingdom
Kharon
experience using Docker, Kubernetes, and implementing CI/CD pipelines for data workflows Proficient in designing, developing, and maintaining RESTful APIs for data services using Python frameworks such as FastAPI, Flask, or Django. Kharon is a highly disruptive and incredibly innovative organization that navigates risk at the intersection of global security threats + international commerce. What does that mean? Great More ❯
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Software Engineer– Energy & Resources Analytics Platform

London, England, United Kingdom
Hybrid / WFH Options
Baringa Partners
AWS) and IaC ( Terraform, Pulumi) You have worked using one or more frameworks across the breadth of a technology stack ( React/Angular/Vue/Blazor frontend etc, FastAPI/Spring Boot/Django/.Net backend etc) You have an understanding of different architectural approaches, and are confident in discussing the pros and cons of different technology and More ❯
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LLM Suite Engineering - Senior Associate Software Engineer III

London, England, United Kingdom
J.P. MORGAN
Job Description Join JPMorganChase, a global leader in financial services, as we revolutionize our operations with artificial intelligence and machine learning. As a Software Engineer III at JPMorgan Chase within the AIML and Data Platforms (AMDP) team, you will be More ❯
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LLM Suite Engineering - Senior Associate Software Engineer III

London, England, United Kingdom
JPMorgan Chase & Co
This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Job Description Join JPMorganChase, a global leader in financial services, as we revolutionize our operations with artificial intelligence and machine More ❯
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Python Quant Developer

London, England, United Kingdom
Jefferies
The position is for a Quant Developer (Python) who will be part of Quant Development Technology team, directly supporting the Front Office Algorithmic Trading offering ofa leading Financial Services firm. The work assignments will include playing a lead role in More ❯
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Senior Software Engineer – API & ML Infrastructure

London, England, United Kingdom
SoCode Recruitment
from backend APIs to deployment and scaling. This role sits at the intersection of MLOps, cloud-native architecture, and distributed systems. What You’ll Do Build scalable APIs with FastAPI (or similar), Python, and modern web tooling Design and maintain ML model serving infrastructure Collaborate with ML engineers on training and deployment workflows Own deployment: Kubernetes, Terraform, CI/CD … React or similar Drive best practices in system design, performance, and reliability What We’re Looking For 5+ years of software engineering experience Strong backend skills — Python, REST APIs, FastAPI Proven experience scaling cloud-native systems (AWS, microservices, IaC) Kubernetes + Terraform expertise in production environments Solid understanding of ML deployment (e.g. PyTorch, TensorFlow, JAX) Frontend skills with React/ More ❯
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FastAPI
London
10th Percentile
£65,000
25th Percentile
£75,000
Median
£80,000
75th Percentile
£87,500
90th Percentile
£97,500