Finance, Retail & Energy sectors. Budget: 55k + full benefits + fully remote Primary requirements: Must be eligible for SC Clearance Backend Development: Experience in building microservices using Python with FastAPI, Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python More ❯
remote or hybrid) Primary requirements: Must be eligible for SC Clearance Leadership: Experience in leading projects and people management Backend Development: Experience in building microservices using either Python with FastAPI, Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python More ❯
City of London, Greater London, UK Hybrid / WFH Options
X4 Technology
Commodities) 8+ years of software engineering experience, with 4-6 years of professional Python development Strong experience building RESTful APIs and working with frameworks such as Django, Flask, or FastAPI Familiarity with containerisation (Docker), CI/CD pipelines, and infrastructure-as-code tools Exposure to cloud platforms (preferably AWS or Azure) and data engineering workflows Proficiency in relational and non More ❯
to join an exciting robotics start-up, building intelligent automation systems that bridge hardware, AI, and the cloud. In this role, youll develop high-performance backend services using Python (FastAPI, Flask, or Django) and build modern, responsive web interfaces in React . Youll collaborate with robotics and AI teams to integrate real-time data, deploy smart features, and deliver seamless More ❯
actually using the product - and relish in receiving their feedback. A strong communicator is needed here. The tech: You will be competent in the following technical areas: -Python (incl. FastAPI and/or Django) and other backend languages (Rust, Ruby, Go etc.) -Frontend (React, Typescript) -APIs (design, development and standards) -Database (design, performance optimisation and for scale) -Infrastructure (CI/ More ❯
workflows (like Cursor agent mode) into our daily engineering, creating guardrails, and helping others ship high-quality code faster. What youll 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. More ❯
City of London, Greater London, UK Hybrid / WFH Options
Cogna
workflows (like Cursor agent mode) into our daily engineering, creating guardrails, and helping others ship high-quality code faster. What youll 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. More ❯
supply chain, to marketing & sales for domestic markets in the UK, and further abroad internationally. Skills And Experience Required Python experience Be great to have a web framework Flask, FastAPI, Django, etc Data manipulation with Pandas/numpy SQL Server This role is great for; Python Engineers early in their Career that want access to a great learning culture and More ❯
Senior Backend Engineer Join a profitable FinTech Scale-Up Up to 100,000 Remote working once a month onsite in London Python, PostgreSQL FastAPI, Django Were partnered with a leading FinTech scale-up who are transforming how small businesses access finance to grow and scale. The business is backed by a strong track record and with an ambitious mission, theyve More ❯
Python Developer will design and implement high-performance, secure services in the Business Layer, enabling personalised, AI-driven citizen services. Responsibilities Develop and maintain APIs and services using Python, FastAPI/Django/Flask, and modern cloud tooling. Build secure and performant integrations between the Business Layer and other systems. Design and optimise data pipelines and transformation logic for large … of daily interactions. Collaborate within agile teams alongside product owners, architects, and engineers. Essential Skills Proven Python development experience in production. Strong knowledge of RESTful APIs and asynchronous frameworks (FastAPI, AsyncIO, etc.). Experience with cloud environments (AWS Lambda, API Gateway, Serverless). Solid understanding of SQL/NoSQL databases and caching technologies (Redis, DynamoDB, PostgreSQL). Active UK Security More ❯
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 ❯
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 ❯
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 ❯
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 ❯
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 ❯
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 ❯
City of London, Greater London, UK Hybrid / WFH Options
Ada Meher
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 ❯
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 ❯
Altrincham, Greater Manchester, UK Hybrid / WFH Options
Ada Meher
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 ❯
Leigh, Greater Manchester, UK Hybrid / WFH Options
Ada Meher
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 ❯
Bolton, Greater Manchester, UK Hybrid / WFH Options
Ada Meher
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 ❯
Ashton-Under-Lyne, Greater Manchester, UK Hybrid / WFH Options
Ada Meher
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 ❯
a collaborative development team solving real-world problems, building scalable solutions from prototype to production, and contributing directly to the companys growth milestones. Key Responsibilities Backend APIs (Python/FastAPI) : Build secure, scalable services powering AI features and data retrieval. RAG & Vector Search : Design and iterate retrieval pipelines using chunking, embeddings, hybrid search, and feedback loops. LLM Integration : Work with … to technical strategy. Innovation : Explore and recommend new tools and frameworks for full-stack and AI development. Experience: 5+ years of full-stack development experience. Strong proficiency in Python (FastAPI) and React/Next.js. Experience with RAG systems, vector databases (pgvector, FAISS, Weaviate), and hybrid search. Deep understanding of chunking, indexing, reranking, and evaluation metrics. Solid experience with SQL and More ❯
