51 to 75 of 152 Permanent FastAPI Jobs

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100 openings

Hiring Organisation
Braintrust
Location
Seattle, Washington, United States
Employment Type
Permanent
Salary
USD Annual
must meet all the requirements in order to be considered for this project: 5 years of professional experience with Python. Strong experience with FastAPI , pytest , and async/await . Hands-on experience with Docker , PostgreSQL , and CI/CD pipelines. Proven experience writing and maintaining automated tests (not just ...

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100 openings

Hiring Organisation
Braintrust
Location
Bellville, Texas, United States
Employment Type
Permanent
Salary
USD Annual
must meet all the requirements in order to be considered for this project: 5 years of professional experience with Python. Strong experience with FastAPI , pytest , and async/await . Hands-on experience with Docker , PostgreSQL , and CI/CD pipelines. Proven experience writing and maintaining automated tests (not just ...

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100 openings

Hiring Organisation
Braintrust
Location
Boston, Massachusetts, United States
Employment Type
Permanent
Salary
USD Annual
must meet all the requirements in order to be considered for this project: 5 years of professional experience with Python. Strong experience with FastAPI , pytest , and async/await . Hands-on experience with Docker , PostgreSQL , and CI/CD pipelines. Proven experience writing and maintaining automated tests (not just ...

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100 openings

Hiring Organisation
Braintrust
Location
New York, United States
Employment Type
Permanent
Salary
USD Annual
must meet all the requirements in order to be considered for this project: 5 years of professional experience with Python. Strong experience with FastAPI , pytest , and async/await . Hands-on experience with Docker , PostgreSQL , and CI/CD pipelines. Proven experience writing and maintaining automated tests (not just ...

GenAI Full-Stack Engineer — Build POCs & Scale Solutions

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
GenAI-focused full-stack developer to build and scale GenAI POCs into production-grade applications. You will design and implement backend microservices in Python (FastAPI) or TS (Express), craft responsive UIs in React/TypeScript, and leverage LangChain ecosystems to empower clients with AI-driven capabilities. You will also work ...

Python Developer

Hiring Organisation
McGregor Boyall Associates Limited
Location
London, United Kingdom
Employment Type
Permanent
developing automation systems for trade processing workflows, creating custom data visualization tools, and architecting web applications using Flask/Django/FastAPI stacks. You'll have autonomy to drive technical decisions while collaborating with C-suite stakeholders to solve complex financial data challenges. We need someone who understands ...

Senior Software Engineer

Hiring Organisation
Tria
Location
Bristol, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum
have the freedom to experiment, innovate, and make a direct impact. The Tech You'll Use: Their backend is predominately Python (Django & FastAPI) with JavaScript front end (bonus points if you're a Vue pro!), you'll be pulling from a SQL Database and predominately Docker K8's DevOps ...

Senior Full Stack Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Interested in building software that directly impacts how businesses operate. Preferred Experience 5+ years of software engineering work experience. Experienced in Typescript, Python, React, FastAPI, Django, Flask, and AWS. Strong experience designing distributed systems and scalable applications. Experience owning production systems and making architectural decisions. Familiarity with cloud infrastructure, APIs ...

Senior Data Scientist

Hiring Organisation
Sirius Analysis Limited
Location
Portsmouth, England, United Kingdom
into technical requirements and development objectives. Python expertise covering standard data science libraries (NumPy, pandas, matplotlib, Scikit-learn, PyTorch, etc...), web frameworks (Flask or FastAPI) and visualisation (Dash, Plotly, & Streamlit). Proficient in SQL. Working with unstructured data Building customer and stakeholder relationships. Supporting and leading authoring of technical reports ...

Principal LIMS Developer- Java & Sapio

Hiring Organisation
HTC Global Services Inc
Location
United States
Employment Type
Permanent
Salary
USD Annual
development experience with Spring and Spring Boot. Strong hands-on experience with SAPIO LIMS and/or LabVantage. Experience with Python (Flask, Django, or FastAPI). Proven experience leading LIMS implementations, upgrades, or modernization programs. Experience in healthcare, clinical laboratory, diagnostics, pharmaceutical, or biotechnology environments. Expertise in REST APIs, microservices ...

AWS Generative AI Engineer

Hiring Organisation
CYNET SYSTEMS
Location
Charlotte, North Carolina, United States
Employment Type
Permanent
Salary
USD 50 Annual
vector databases, AI agents and agentic workflows, finetuning and model evaluation, responsible AI, and AI governance. Proficiency in Python. Experience with LangChain, LangGraph, LlamaIndex, FastAPI, REST APIs, and SDK integrations. Experience integrating structured and unstructured data sources. Knowledge of embeddings, semantic search, knowledge bases, and document ingestion pipelines. Responsibilities: Design ...

Lead Software Engineer

Hiring Organisation
Pike + Bambridge | Vehicle Leasing
Location
United Kingdom
strong grasp of front-end tech, database management, and the ability to choose the “right tool for the job.” Backend & Infra: Node.JS, Python, FastAPI, REST APIs, GraphQL, Vercel, AWS, CI/CD, PostHog. Frontend: React, Next.JS, TypeScript, Tailwind CSS, Shadcn/ui, Storybook, PlateJS, SlateJS. AI/LLM Expertise : Hands ...

GenAI-Driven Senior Software Engineer (Java/Python)

Hiring Organisation
Jobleads-UK
Location
Belfast City District, Northern Ireland, United Kingdom
Python) to help shape next‐gen financial software. You will engage in full‐stack development, leverage Spring Boot/Core and Flask/FastAPI, and build cloud‐native solutions with modern JS frameworks. You will also explore Gen‐AI concepts, APIs, and scalable architectures while mentoring mid‐level staff ...

Senior Product Engineer, £100k + benefits

Hiring Organisation
Morson Edge
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
customer value, not just implementation) Evidence of iterative delivery (MVPs, feedback loops, prioritisation) Ability to work with ambiguity and challenge requirements Tech: Python, TypeScript FastAPI, Django, Vue MongoDB, PostgreSQL Kubernetes GCP The money is good too – up to £100k plus benefits including bonus, share options and private healthcare. ...

Senior Software Engineer - Python/Web, office based - London

Hiring Organisation
Tech Talent ID
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 - 85,000 Annual
software solutions, providing technical guidance to a small team, ideally offering experience across. Solid Python web development in a B2B product setting Django FastAPI/Flask beneficial AWS DevOps Agile Please note, this role requires Full Time attendance in their central London office - please only apply if that is something ...

Founding AI Platform Engineer

Hiring Organisation
MBN Solutions
Location
City of London, London, United Kingdom
with the founding team — fast decisions, no bureaucracy What we're looking for: ✅ 5+ years building production software ✅ Strong full-stack chops (Python/FastAPI + React/TypeScript or equivalent) ✅ Solid SQL & data modelling instincts — comfortable in data-heavy B2B products ✅ Bonus: experience with agentic/LLM-powered products ...

Backend Developer

Hiring Organisation
First Choice Staff
Location
Feltham, London, United Kingdom
Employment Type
Permanent
Salary
£40,000
covering architecture, processes, and code Essential Skills and Experience Solid proficiency in Python, JavaScript, and SQL Strong understanding of back-end frameworks (e.g. Flask, FastAPI, Node.js or similar) Experience working with cloud platforms (e.g. DigitalOcean, AWS, or Azure) Experience developing or maintaining RPA solutions Ability to work independently, managing ...

Python Developer

Hiring Organisation
Spencer Rose Ltd
Location
Watford, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 75,000 Annual
event-driven systems. Proven experience building API-first services, with a focus on performance, reliability, and maintainability. Python Back End development, primarily using FastAPI and modern API patterns. Strong understanding of RESTful API design, schema validation, and OpenAPI/Swagger. Experience working with messaging and eventing platforms such as Kafka ...

Python Software Engineer

Hiring Organisation
Spencer Rose Ltd
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
driven systems. \n Proven experience building API-first services, with a focus on performance, reliability, and maintainability. \n Python Back End development, primarily using FastAPI and modern API patterns. \n Strong understanding of RESTful API design, schema validation, and OpenAPI/Swagger. \n Experience working with messaging and eventing platforms ...

Founding Engineer

Hiring Organisation
SR2
Location
Cambridge, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum
Founding Engineer | Cambridge | Hybrid | £70,000-£80,000 + Equity Tech stack: Python (FastAPI) - the bread & butter! React & TypeScript PostgreSQL Azure Docker AI/LLMs Some startups are trying to make meetings 3% more efficient. This one is tackling a problem that affects millions of people every day, even ...

Senior Backend Engineer | AI Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
teams to understand their needs and provide scalable platform solutions. Continuously improve developer experience and platform adoption across the organization. Tech Stack: Backend Python FastAPI Agent Development Kit (ADK) Datastores PostgreSQL BigQuery Firestore Infrastructure Google Cloud Platform (GCP) RabbitMQ Terraform Monitoring & Observability Grafana Prometheus Langfuse incident.io Sentry What to Expect ...

AI & ML Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
tooling, contributing ideas and recommendations for continuous improvement. Who you will work with Data and AI Team About you Strong Python engineering skills (FastAPI, testing, typing) and experience with cloud‐native development (GCP preferred). Hands‐on experience with GCP Vertex AI (model endpoints, pipelines, embeddings, vector search) or equivalent ...

Senior ML Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Hands‐on experience with LLM and agent frameworks and agentic reasoning patterns. Practical understanding of Model Context Protocol (MCP), including server and tool patterns. FastAPI and REST API design and implementation experience. Experience with prompt engineering and RAG‐based architectures. Containerisation and Kubernetes‐based deployment experience. Ability to work across ...

Backend Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
engine: scheduling, execution, state, retries, concurrency and cancellation, the machinery that decides what runs, when, and what happens when it doesn't. Python and FastAPI on AWS, shipped to production multiple times a day Design for load that isn't smooth: capacity, back-pressure and isolation for a system whose ...

Staff Back End Engineer - Finance Technology

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
hard problems, raising the bar in code review, and unblocking teammates day-to-day Bonus: Extensive experience with Python web frameworks (Django/FastAPI/Flask/Starlette/Ninja). A background in high-logic or high-scale fields like Fintech, Gaming, Healthcare Tech, Logistics, Security/Cryptography ...