Backend AI Engineer
2 weeks ago
Do you want to build the infrastructure powering the next generation of AI agents? Have you scaled backend systems that drive automation at speed? Ready to join a profitable AI startup transforming how industries deploy technology? A profitable, fast-growing AI company is building the "roads" for AI agents — providing the infrastructure that lets businesses deploy and integrate automation in days, not weeks. Originally focused on solving inefficiencies in the construction sector, the company's platform is now expanding across industries, helping clients streamline complex processes with agentic AI systems. As a Senior AI Backend Engineer, you'll play a critical role in building and scaling the core platform. Working directly with the CTO and founding team, you'll design backend architecture, build data pipelines, and integrate AI/LLM components into production systems. Role Breakdown: 50% Backend Engineering: FastAPI, Flask, Node.js, CI/CD 30% Data Engineering: ETL, DBT, Airflow 20% AI/LLM Integration: LangChain, RAG pipelines, orchestration Key Responsibilities: Design and build backend services to support AI agent deployment Develop scalable data pipelines and integration layers Implement AI/LLM-powered features with LangChain and related frameworks Collaborate with the CTO and adoption engineering team to deliver production systems Contribute to architecture decisions for scalability and reliability Key Details: Salary: £80,000–£100,000 Working Model: Hybrid (2–3 days/week in Central London) Team: 10-person founding group including CTO, Head of Front-End, and adoption engineers Reporting Line: CTO Visa: Cannot sponsor Ideal Profile: 5–8 years' experience in backend or data engineering (Python) Exposure to AI/LLMs, RAG, or personal AI side projects Experience in startups or scale-ups where you've helped build or grow systems Solid education and strong coding fundamentals Comfortable working in a small, fast-moving founding team This is an opportunity to help shape the technical foundation of a company at the forefront of agentic automation — building a platform that's already profitable, scalable, and in high demand. If interested, please apply below.
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Senior AI Backend Engineer
2 weeks ago
Slough, Berkshire, United Kingdom Harnham Full timeSenior Backend Engineer | AI Infrastructure | London (Hybrid) We're partnering with a fast-growing AI infrastructure startup that's redefining how organizations deploy and scale AI technologies. Their platform enables global enterprises to implement, monitor, and continuously improve their AI and tech rollouts — giving teams true "speed-of-innovation"...
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Backend Engineer
2 weeks ago
Slough, Berkshire, United Kingdom Oliver Bernard Full timeBackend Engineer - Python, Rust Paying £90k-£140K + Equity 5 days a week onsite in Central London Oliver Bernard have partnered with a stealth AI company, founded by world-class engineers with backgrounds from top-tier Silicon Valley firms, is looking to grow its core engineering team in London. This is a rare opportunity to join a well-funded,...
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Head of AI Engineering
2 weeks ago
Slough, Berkshire, United Kingdom Bibex Full timeHead of Engineering (Founding Team) London / Remote | Full-time | Early-stage startup Bibex is building the global IP discovery platform for publishing, film/TV and beyond. We use AI to surface high-potential stories from fragmented global markets, connecting them with scouts, publishers, studios and producers. We're backed by experienced founders (Footnote...
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Backend developer
7 hours ago
Slough, Berkshire, United Kingdom Cogna Full timeit is a societal one. These companies face unique, complex challenges that typical software was never designed to solve. Our mission is to give critical industries their own AI-powered Software Factory: a way to build and deploy bespoke digital tools that solve pressing operational challenges. We're backed by leading VCs, including Notion Capital and...
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Lead Software Engineer . AI Innovation
7 hours ago
Slough, Berkshire, United Kingdom Clarivate Full timeWe are looking for a Lead Software Engineer to join our AI Engineering team in London. This is an exciting opportunity to work on cutting-edge AI-powered software, building reliable, scalable solutions that leverage Python, cloud technologies (Azure/AWS), microservices, and LLM-based applications. You will be joining a small, highly skilled engineering team,...
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Founding AI Engineer | YC Start Up
6 hours ago
Slough, Berkshire, United Kingdom Oho Group Ltd Full timeFounding Engineer – AI Startup (Onsite) Ready to build something extraordinary? This is your chance to be one of the first engineers at a high-growth AI startup that's redefining what's possible with intelligent systems. We're talking true zero-to-one engineering — shaping the product, the culture, and the company from day one. You'll work alongside an...
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Software Systems Development Engineer
8 hours ago
Slough, Berkshire, United Kingdom Symbolica AI Full timeAbout Us While others focus on scaling data-hungry neural networks, we're building AI that understands the structures of thought, not just patterns in data. Symbolica is an AI research lab pioneering the application of category theory to enable logical reasoning in machines. We're a well-resourced, nimble team of experts on a mission to bridge the gap...
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Senior AI Engineer
2 weeks ago
Slough, Berkshire, United Kingdom Saragossa Full timeDo you want to get on the AI train? This is your chance. You're going to be coming in to build out various AI solutions, specifically LLM/GenAI products that have been designed for clients. You'll be joining a team of AI Engineers who have the core AI experience, but in some cases aren't hardcore engineers who can build out the in-depth software backend....
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(Senior) AI DevOps Engineer
6 hours ago
Slough, Berkshire, United Kingdom MUFG Investor Services Full timeMUFG Investor Services is a trusted partner to many of the world’s largest public and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration, banking, payments, fund financing, foreign exchange overlay, corporate and regulatory...
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AI Engineer
7 hours ago
Slough, Berkshire, United Kingdom Oho Group Ltd Full timeAI Engineer - Elite Sports Tech - London AI Engineer needed to join a highly skilled Engineering & AI team in a rapidly growing sports tech company. Role and Responsibilities: Design, build, and deploy Large Language Model (LLM)-driven applications into production Develop retrieval-augmented generation (RAG) systems for real-time insights from performance...