Permanent FastAPI Job Vacancies

51 to 75 of 189 Permanent FastAPI Jobs

Senior AI Software Engineer

England, United Kingdom
Klaviyo Inc
evaluation. Experienced backend engineer with a strong track record of building scalable, distributed systems, especially in the service of AI agent capabilities. Proficient in Python and modern backend frameworks (FastAPI, Django preferred). Experience creating human and automated evals to ensure high AI model quality. Proficient in big data tools such as Apache Spark and Hadoop. Deep experience with asynchronous More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer - Full Stack

London Area, United Kingdom
Hybrid / WFH Options
Capsa AI
tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have experience with the following technologies (or similar): Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, LLMs, Typescript, React You enjoy diving deep into the domain, understanding the problem, and focusing on delivering value to the customer. You thrive in a fast paced More ❯
Posted:

Senior Software Engineer - Full Stack

City of London, London, United Kingdom
Hybrid / WFH Options
Capsa AI
tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have experience with the following technologies (or similar): Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, LLMs, Typescript, React You enjoy diving deep into the domain, understanding the problem, and focusing on delivering value to the customer. You thrive in a fast paced More ❯
Posted:

Senior Software Engineer - Full Stack

london, south east england, united kingdom
Hybrid / WFH Options
Capsa AI
tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have experience with the following technologies (or similar): Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, LLMs, Typescript, React You enjoy diving deep into the domain, understanding the problem, and focusing on delivering value to the customer. You thrive in a fast paced More ❯
Posted:

Senior Software Engineer - Full Stack

slough, south east england, united kingdom
Hybrid / WFH Options
Capsa AI
tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have experience with the following technologies (or similar): Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, LLMs, Typescript, React You enjoy diving deep into the domain, understanding the problem, and focusing on delivering value to the customer. You thrive in a fast paced More ❯
Posted:

Senior Software Engineer - Full Stack

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Capsa AI
tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You have experience with the following technologies (or similar): Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, LLMs, Typescript, React You enjoy diving deep into the domain, understanding the problem, and focusing on delivering value to the customer. You thrive in a fast paced More ❯
Posted:

AI Python Developer - Fully Remote

N7, Lower Holloway, Greater London, United Kingdom
Hybrid / WFH Options
Vertech Group (UK) Ltd
functionality into production systems, working closely with other developers to deliver scalable, reliable, and well-structured solutions Essential: At least 4 years’ backend development experience Strong expertise in Python (FastAPI, Flask, or Django) Good understanding of backend architecture, APIs, and cloud environments (AWS, Azure, or GCP) Experience integrating AI or LLM APIs and open-source models into live products Hands More ❯
Employment Type: Permanent
Salary: £100000 - £110000/annum + Benefits
Posted:

Software Engineer

Oxford, England, United Kingdom
Hybrid / WFH Options
Understanding Recruitment
edge tools for researchers and scientists around the world. What You’ll Do Design, build and maintain data-intensive web applications and APIs Develop scalable systems using Python (Django, FastAPI, Flask) Deploy and manage applications across on-premise and cloud environments Implement CI/CD, automated testing, and containerisation best practices Collaborate closely with R&D, operations, and scientific teams More ❯
Posted:

Software Engineer

banbury, south east england, united kingdom
Hybrid / WFH Options
Understanding Recruitment
edge tools for researchers and scientists around the world. What You’ll Do Design, build and maintain data-intensive web applications and APIs Develop scalable systems using Python (Django, FastAPI, Flask) Deploy and manage applications across on-premise and cloud environments Implement CI/CD, automated testing, and containerisation best practices Collaborate closely with R&D, operations, and scientific teams More ❯
Posted:

AI Engineer

United Kingdom
Hybrid / WFH Options
Accelero
necessary. Stay up to date with advancements in LLM fine-tuning, RAG methodologies, and vector search techniques. Essential Skills & Experience: Programming: Strong proficiency in Opensource. API Development: Experience with FastAPI, Flask (Python) OR Express.js for microservices. RAG Development: Hands-on experience building retrieval-augmented AI search solutions. LLM Fine-Tuning: Experience fine-tuning models for domain-specific performance and optimizing More ❯
Posted:

Software Engineer - Python

City of London, London, United Kingdom
Primis
and data workflows Create seamless integrations with external systems Champion AI-assisted development practices across the engineering team What You'll Do: Own backend features and API integrations (Python, FastAPI, gRPC, SQL) Adapt and extend auto-generated pipelines and front-end outputs Build connectors for APIs, files, and external systems Integrate LLM-based capabilities with robust evaluation and monitoring Champion More ❯
Posted:

Software Engineer - Python

London Area, United Kingdom
Primis
and data workflows Create seamless integrations with external systems Champion AI-assisted development practices across the engineering team What You'll Do: Own backend features and API integrations (Python, FastAPI, gRPC, SQL) Adapt and extend auto-generated pipelines and front-end outputs Build connectors for APIs, files, and external systems Integrate LLM-based capabilities with robust evaluation and monitoring Champion More ❯
Posted:

Software Engineer - Python

slough, south east england, united kingdom
Primis
and data workflows Create seamless integrations with external systems Champion AI-assisted development practices across the engineering team What You'll Do: Own backend features and API integrations (Python, FastAPI, gRPC, SQL) Adapt and extend auto-generated pipelines and front-end outputs Build connectors for APIs, files, and external systems Integrate LLM-based capabilities with robust evaluation and monitoring Champion More ❯
Posted:

Software Engineer - Python

london, south east england, united kingdom
Primis
and data workflows Create seamless integrations with external systems Champion AI-assisted development practices across the engineering team What You'll Do: Own backend features and API integrations (Python, FastAPI, gRPC, SQL) Adapt and extend auto-generated pipelines and front-end outputs Build connectors for APIs, files, and external systems Integrate LLM-based capabilities with robust evaluation and monitoring Champion More ❯
Posted:

Software Engineer - Python

london (city of london), south east england, united kingdom
Primis
and data workflows Create seamless integrations with external systems Champion AI-assisted development practices across the engineering team What You'll Do: Own backend features and API integrations (Python, FastAPI, gRPC, SQL) Adapt and extend auto-generated pipelines and front-end outputs Build connectors for APIs, files, and external systems Integrate LLM-based capabilities with robust evaluation and monitoring Champion More ❯
Posted:

Data Engineer

Central London, London, United Kingdom
Hybrid / WFH Options
Singular Recruitment
Highly desirable skills include: Domain Experience: Familiarity with the unique structure of sports data (e.g., event, tracking, scouting, video). API Development: Experience building data-centric APIs, especially with FastAPI on serverless platforms like Google App Engine . Streaming Data: Practical experience building real-time data pipelines. DevOps & MLOps: Knowledge of Infrastructure as Code (Terraform), MLOps principles, and containerization (Docker More ❯
Employment Type: Permanent, Work From Home
Salary: £70,000
Posted:

Machine Learning Engineer

London Area, United Kingdom
Hybrid / WFH Options
Higher - AI recruitment
with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully More ❯
Posted:

Machine Learning Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Higher - AI recruitment
with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully More ❯
Posted:

Machine Learning Engineer

london, south east england, united kingdom
Hybrid / WFH Options
Higher - AI recruitment
with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully More ❯
Posted:

Machine Learning Engineer

slough, south east england, united kingdom
Hybrid / WFH Options
Higher - AI recruitment
with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully More ❯
Posted:

Machine Learning Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Higher - AI recruitment
with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully More ❯
Posted:

Full Stack Engineer

London Area, United Kingdom
Hybrid / WFH Options
Higher - AI recruitment
that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid More ❯
Posted:

Full Stack Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Higher - AI recruitment
that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid More ❯
Posted:

Full Stack Engineer

london, south east england, united kingdom
Hybrid / WFH Options
Higher - AI recruitment
that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid More ❯
Posted:

Full Stack Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Higher - AI recruitment
that frequently gets deployed to users Strong understanding of product development and navigating large codebases Located in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support Min. 3 months fully paid More ❯
Posted:
FastAPI
10th Percentile
£57,500
25th Percentile
£65,625
Median
£80,000
75th Percentile
£100,000
90th Percentile
£112,500