wants to make a tangible impact. As a Lead Backend Engineer, you'll take ownership of designing and scaling cloud-native backend systems. You'll work primarily with Python (FastAPI) and play a key role in shaping the architecture of microservices that support millions of users. Beyond hands-on development, you'll provide technical leadership, mentor team members, and influence … service-oriented architecture. Champion the use of AI and automation to enhance productivity across the team. What experience do I need: Strong background building and scaling Python-based systems (FastAPI, Flask, or Django REST). Proven leadership experience in a development environment Solid expertise in microservices, APIs, messaging patterns, and distributed systems. Proficient with cloud platforms (AWS, GCP, Azure) and More ❯
ends to robust APIs and databases that drive real business operations. You’ll work across our stack — TypeScript, Next.js, React.js, Node.js, MySQL/PostgreSQL, and occasionally PHP or Python (FastAPI) — delivering complete internal systems that automate, optimise, and scale company workflows. You’ll also have the chance to experiment with AI integrations, including services such as OpenAI, ElevenLabs, Whisper, and … system architecture, scalability, and automation discussions. Ensure code quality, maintainability, and security best practices. Core Technologies Languages: TypeScript, JavaScript (ES6+), PHP, Python Frameworks: React.js, Next.js, Node.js (Express or similar), FastAPI Databases: MySQL, PostgreSQL Front-End: HTML5, CSS3, TailwindCSS or equivalent Version Control: Git Preferred/Desirable Skills Familiarity with AI and automation services such as OpenAI, ElevenLabs, Whisper, Anthropic. Experience More ❯
Full Stack Web Developer Norwich, UK On-site £30,000 k p.a. depending on experience - negotiable for the right person! Full-time, Permanent Monday-Thursday 9am -6:15pm and 1 Friday a month. About the Role My client are looking More ❯
end-users to find impactful solutions. What we're looking for Solid experience with Python in a web application context . You have some experience with web frameworks like FastAPI , Django or Flask , we use FastAPI . Experience with Javascript/Typescript and a modern JS framework such as React , Angular or Vue.js . We generally use React & NextJS Strong More ❯
Write clean, maintainable code and contribute to system design discussions Help improve the performance and scalability of our job search and application engine Our Stack Auto-Apply: Playwright, Python, FastAPI, Meilisearch Main web backend: Laravel (PHP), Vue.js Requirements Strong backend development skills (Python or PHP experience preferred) Comfortable working with APIs, integrations, and external systems Familiarity with Playwright or browser More ❯
Senior Python Developer to drive the design and development of scalable, high-quality software solutions for our Leeds based client. What You'll Do: Lead development using Python, Flask, FastAPI, or Django Collaborate with front-end teams (Vue.js/React, HTML, CSS) Optimise SQL databases and manage cloud infrastructure (AWS, Terraform) Implement serverless architectures and Docker containers Mentor junior developers … and champion best practices What You Bring: 5+ years of Python development experience Web frameworks experience like Flask, FastAPI, Django Strong SQL skills Strong grasp of front-end tech, cloud services, and CI/CD Agile mindset with excellent problem-solving and leadership skills Bonus Points For: ORM experience, advanced AWS knowledge, and design pattern expertise Ready to make an More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
Senior Software Engineer/Developer (Python FastAPI Data) London to £90k Are you a data centric Software Engineer with strong Python and SQL skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly growing Cybersecurity insurance markets. … days per year Season ticket loan Employee Assistance Programme Impactful role with great career progression Apply now to find out more about this Senior Software Engineer/Developer (Python FastAPI Data) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people More ❯
and data infrastructure. You'll work closely with data engineers, AI specialists, and frontend developers to deliver robust, production-quality software. Key Responsibilities: Build and maintain Python web applications (FastAPI preferred) Integrate AI/ML components with backend, data, and compute infrastructure Deliver clean, well-documented code following best practices Implement automated testing frameworks and CI/CD workflows Monitor … and improve performance metrics across deployed tools Collaborate with technical teams to develop end-to-end data pipelines YOUR SKILLS AND EXPERIENCE Essential: Proven Python backend development experience (FastAPI, Flask, or similar) Strong cloud experience (GCP preferred) and understanding of core web app infrastructure Skilled in automated testing (pytest) and modern DevOps tools (Git/GitHub, CI/CD) Experience More ❯
and data infrastructure. You'll work closely with data engineers, AI specialists, and frontend developers to deliver robust, production-quality software. Key Responsibilities: Build and maintain Python web applications (FastAPI preferred) Integrate AI/ML components with backend, data, and compute infrastructure Deliver clean, well-documented code following best practices Implement automated testing frameworks and CI/CD workflows Monitor … and improve performance metrics across deployed tools Collaborate with technical teams to develop end-to-end data pipelines YOUR SKILLS AND EXPERIENCE Essential: Proven Python backend development experience (FastAPI, Flask, or similar) Strong cloud experience (GCP preferred) and understanding of core web app infrastructure Skilled in automated testing (pytest) and modern DevOps tools (Git/GitHub, CI/CD) Experience More ❯
play a part in shaping the technical vision of this business and work on their product from an early stage. What you'll work on: Backend APIs (Python/FastAPI): Build and maintain secure, high-performance services that drive AI features and data access at scale. RAG & vector search: Design and improve retrieval pipelines (embeddings, chunking, hybrid search, ranking, feedback … pgvector, FAISS, Weaviate, Elasticsearch k-NN), embeddings, and hybrid search methods. Practical knowledge of chunking strategies, indexing, precision/recall trade-offs, reranking, and evaluation techniques. Proficient in Python (FastAPI) and React/Next.js . Solid experience with both SQL and NoSQL databases (Postgres, DynamoDB, etc.). Exposure to LLMs, embeddings, and vector search APIs . Strong understanding of data More ❯
Software Engineer - Python/FastAPI/React/Functional programming/Typescript Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 Company: VC back Startup About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution at a time, this … brilliant minds from Cambridge, MIT, and Google across Software Engineering, Data Science, Theoretical Physics, and Computational Geometry. Opportunities: Frontend or Backend Tech Stack within the engineering environment: Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker Frontend: React, TypeScript, Vite Infrastructure: GitHub Actions, GCP, Kubernetes (optional) Paradigms: Functional programming, async APIs, event-driven architecture Responsibilities Build and maintain backend services using FastAPI and … moving, early-stage product Requirements Bachelor's degree in Computer Science 2+ years of experience building web applications in a production environment Strong experience with Python and API frameworks (FastAPI, Flask, etc.) Proficiency with React and TypeScript Comfort or interest in functional programming principles and clean code architecture A genuine interest in engineering and the physical world Ability to thrive More ❯
Principal Accountabilities Develop backend systems using Python, FastAPI, and related frameworks Manage data with SQL Alchemy, working across PostgreSQL, CosmosDB, and Redis Build scalable cloud solutions using Azure PaaS services (App Services, Function Apps, API Management, etc.) Design and implement RESTful APIs and microservices architecture using Swagger and Postman Handle distributed task processing with Celery Apply TDD principles using PyTest … onboarding Collaborate with cross-functional teams to align on technical goals Foster a culture of innovation and continuous improvement Technical Skills Python Expertise: Strong proficiency in Python, especially with FastAPI, SQL Alchemy, and Celery. Azure PaaS: Hands-on experience with Azure services like App Services, Function Apps, API Management, Service Bus, Storage, Key Vaults, Azure SQL, and Cosmos DB. API More ❯
roadmap and translate requirements into technical delivery. Technical Excellence Set standards for code quality, testing, and secure-by-design practices. Guide teams in modern software engineering practices across Python, FastAPI, Docker, Kubernetes, Ansible, Bash, Ruby, JavaScript , and related technologies. Provide architectural oversight on distributed systems, APIs, and integrations with GPU/HPC infrastructure. Maintain expertise in emerging technologies including Generative … similar). Proven track record of leading distributed engineering teams in Cloud, AI, or HPC-related environments . Hands-on experience in one or more of the following: Python, FastAPI, Kubernetes, CI/CD pipelines, Ansible, Docker, Bash, Ruby, JavaScript . Experience delivering customer-facing platforms and APIs at scale. Strong understanding of cloud architecture (IaaS/PaaS), GPU compute More ❯
Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python-based cloud microservices (FastAPI preferred), contributing to the architecture of resilient, high-performance systems, and collaborating with a cross-functional team to deliver features at pace. This is a hands-on engineering position with … plenty of scope to influence technical direction, improve processes, and grow your expertise in distributed systems. What will I be doing: Design, develop, and maintain Python microservices (FastAPI) running in production. Take ownership of features end-to-end, from design to deployment and monitoring. Write high-quality, testable code with a focus on scalability and resilience. Collaborate closely with engineers … product managers, and designers to deliver quickly. Contribute to evolving architecture, tooling, and CI/CD practices. What experience do I need: Strong background in Python development (FastAPI, Flask, or Django). Good knowledge of microservices, APIs, and cloud-based infrastructure. Experience with SQL and NoSQL databases, Git, and CI/CD workflows. Solid engineering fundamentals - data structures, OOP, debugging More ❯
Technical Lead (Python) | £70,000 - £90,000 | Leeds (hybrid)| Tech-for-Good | AWS | Flask/FastAPI/Django Locations: Leeds - 2 days a week on-site Salary Expectations: £70,000 - £90,000 (DOE) Are you an experienced Python Engineer ready to take ownership of technical direction while staying fully hands-on We’re partnered with a purpose-led organisation using … codebase while influencing architecture, mentoring others and driving best practices across the stack.What you’ll be doing Designing and developing new features and backend services using Python with Flask, FastAPI or Django Collaborating closely with frontend engineers working in React or Vue to build seamless, user-first experiences Owning infrastructure decisions across AWS, Terraform and Docker Setting the standard for … for a chat to learn more about how you could help shape something meaningful. Technical Lead (Python) | £70,000 - £90,000 | Leeds (hybrid)| Tech-for-Good | AWS | Flask/FastAPI/Django More ❯
Birmingham, West Midlands, United Kingdom Hybrid / WFH Options
SF Recruitment (Tech)
experience in most of the following: - Strong commercial python development experience - Experience working on business transaction projects (pension, banking, accounting, payments, back-office processing etc) - Framework experience - Flask,Django, FastAPI etc - Solid MySQL skills - Experience working in a fast-paced financial services/accounting - Azure cloud exposure - Strong communication and stakeholder engagement skills - Any experience integrating automation solutions into existing … development and progressing quickly in this market leading company please apply now. Python Developer London, Birmingham, Manchester, Leeds, Bristol (long term remote working) Python, Flask ,Azure, MySQL, API, Django, FastAPI, accounting, financial services More ❯
Claude, Gemini) to workflows and internal tools Fine-tune or prompt models for tasks like: NCR root cause suggestions Supplier performance classification Delivery risk flagging Deploy lightweight APIs using FastAPI or Flask (GCP Cloud Run + Docker) Experience Required: Direct, hands-on experience with GCP (BigQuery, Vertex AI, Cloud Run) Strong SQL complex querying Python for analytics, backend logic, and … model prototyping Familiarity with LLM APIs , prompt engineering , embeddings , and traditional ML (e.g. XGBoost , scikit-learn ) Comfortable deploying tools using Docker , Flask/FastAPI , and GCP services Ability to work independently and iterate quickly toward high-quality outcomes Full-stack data capability, from pipelines to dashboards to AI-powered APIs Hands-on, impact-driven, and solution-oriented approach Experience applying More ❯
/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 2–4+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/… orchestration; MCP servers for integrations. Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). AI Models & APIs: Claude (Anthropic), Gemini (Google); Amazon Nova Canvas (vision), Deepgram More ❯
/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 2–4+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/… orchestration; MCP servers for integrations. Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). AI Models & APIs: Claude (Anthropic), Gemini (Google); Amazon Nova Canvas (vision), Deepgram More ❯
/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 2–4+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/… orchestration; MCP servers for integrations. Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). AI Models & APIs: Claude (Anthropic), Gemini (Google); Amazon Nova Canvas (vision), Deepgram More ❯
london (city of london), south east england, united kingdom
Affinity Labs
/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 2–4+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/… orchestration; MCP servers for integrations. Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). AI Models & APIs: Claude (Anthropic), Gemini (Google); Amazon Nova Canvas (vision), Deepgram More ❯
/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 2–4+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/… orchestration; MCP servers for integrations. Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). AI Models & APIs: Claude (Anthropic), Gemini (Google); Amazon Nova Canvas (vision), Deepgram More ❯
Become a core member of the company and execute on ambitious milestones, taking ownership of projects. Work closely with the leadership team within a highly collaborative company culture. Own the design and implementation of infrastructure for reliable and highly performant More ❯
assembled a world-class team of AI engineers, data scientists, and system architects — now expanding as we scale our suite of agentic AI and architectural tools built on LangChain, FastAPI , and multi-agent reasoning frameworks . Our mission is to redefine how intelligent systems operate — creating scalable, autonomous toolchains that can reason, plan, and execute across complex real-world environments. … just prototypes. What You’ll Work On 🔹 Building agentic AI orchestration frameworks and autonomous toolchains. 🔹 Integrating multimodal reasoning systems with live data pipelines. 🔹 Designing scalable microservice and backend architectures (FastAPI, Docker, etc.). 🔹 Working with state-of-the-art LLMs and reasoning stacks (LangChain, OpenAI, Anthropic, Ollama). 🔹 Contributing to systems moving toward IPO-scale commercialisation. What We Offer 💠 Equity … Hybrid and flexible working options (UK/Europe). What You Bring 🔹 Strong Python development skills. 🔹 Experience integrating LLMs or working with multi-agent systems. 🔹 Familiarity with backend frameworks (FastAPI, Flask, or Django). 🔹 Understanding of scalable architectures and distributed systems. 🔹 Curiosity, autonomy, and a builder’s mindset. 📩 Apply now: Send your CV to sales@adema.ai More ❯
