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96 jobs

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96 jobs Posted Sort

Lead Full Stack Engineer TypeScript Python API

Lead engineer driving data and technology strategy across a private equity portfolio: running data diligence, maturing portfolio companies' data capabilities and delivering data projects that support value creation. Core tech is TypeScript and Python for API development, with cloud (AWS, Azure, GCP) and AI/agentic programming.

Agentic AI AI Analytics API Api Design +7 skills

Senior Python Developer - Cyber Security

Senior Python developer role at a cybersecurity technology company that uses AI to protect clients globally. Day-to-day involves backend engineering on complex systems, based in London or working from home, with a salary of up to £85,000.

AI Cybersecurity Python

Backend Software Engineer Python - Technologist

Backend software engineer joining a Cambridge-based cybersecurity company that uses AI to protect clients worldwide from advanced cyber threats. The role focuses on backend development in Python, with Rust and C++ also central to the stack; salary up to £80k.

AI C++ Cybersecurity Python Rust

Client Server Limited

Backend Developer Golang Node Pub / Sub

Backend Developer building the core real-time messaging platform of a high-growth tech company, designing scalable pub/sub and distributed systems in Go or Node.js. Mostly remote with monthly meetups at a dog-friendly North London office, plus work on low-latency messaging and AI communication infrastructure.

AI Cloud Distributed Systems Event Driven Architecture Go +5 skills

Java Developer AI Claude - FinTech

Hands-on backend Java role at a scaling FinTech in Newcastle, modernising a C++ trading system into a scalable, high-performance real-time Java platform for Front Office traders. Involves architectural ownership and use of AI-assisted tools like Claude; salary up to £120k plus bonus.

AI C++ Fintech Java Multithreading

Python Software Engineer Conversational AI

A remote, hands-on engineer role designing and building production-grade AI systems and backend services for a conversational AI platform. Day to day you work with Python, LLMs, AWS, TypeScript, Node.js and infrastructure as code, owning technical decisions and evolving the architecture.

AI AWS Conversational AI Infrastructure as Code LLM +3 skills

Senior Python Developer - Cyber Security

A Senior Python Developer / Backend Software Engineer builds backend systems at a cybersecurity company in London that uses AI to defend clients worldwide from advanced cyber threats. Day to day: Python backend development on complex systems, with hybrid/WFH options and a salary up to £85,000.

AI Cybersecurity Python

Founding Software Engineer Python - Start-Up

Founding full-stack engineer at an early-stage AI start-up building compliance and operational-efficiency technology for the NHS and other regulated industries. You own Python/TypeScript development end to end — architecture, FastAPI backend services, React frontend, and Azure CI/CD — working hybrid from London and Cambridge.

Agentic AI AI API Azure CI/CD +10 skills

Backend Software Engineer Python R&D

Backend Software Engineer (Python, R&D) for a cybersecurity technology company that uses AI to protect clients globally from advanced cyber threats. The role involves problem solving on complex backend systems and pays up to £85k, based in London/Cambridge with work-from-home flexibility.

AI Cybersecurity

Client Server Limited

Python Backend Engineer – AI Security R&D (Cambridge)

A Python backend engineer joins the R&D team in Cambridge to build a new greenfield product that combats AI-based security threats, delivering complex backend systems through rapid prototyping and iterative development, mainly in Python with exposure to Rust and TypeScript, in a hybrid work arrangement.

AI Prototyping Python Rust TypeScript

Client Server Limited

Backend Developer Typescript - Cyber Security

Backend Developer designing and building TypeScript backend services for the customer portal at a leading cyber security technology company in Cambridge (hybrid, 2 days/week in office), protecting organisations from AI-driven cyber threats. Stack includes TypeScript and Kubernetes, with Python/Rust desirable.

AI Containerization Cybersecurity Kubernetes Python +2 skills

Client Server Limited

Python Software Engineer Agentic Ai

A Python engineer builds backend code and APIs focused on agentic AI — developing, integrating and deploying intelligent agents powered by LLMs like Claude and ChatGPT, with prompt engineering, CI/CD and ideally AWS and Neo4j. London-based with work-from-home one day a week, salary up to £65k plus bonus and EMI share options.

Agentic AI Agile AI Ai Enablement API +10 skills

Client Server Limited

Backend Software Engineer Python R&D

Backend Software Engineer in an R&D team at a cybersecurity technology business, building a Greenfield product to combat AI-based attacks. Day to day is rapid prototyping and iterative development, mainly in backend Python with some Rust and other emerging technologies; hybrid role based in London (2 office days/week), salary up to £85k plus bonus.

AI AWS Azure C++ Cybersecurity +5 skills

Backend Software Engineer Python R&D

Join an R&D team building a greenfield backend product that counters AI-based security threats. The role is primarily Python (with Rust/exposure to other languages), spanning rapid prototyping, architecture, and deploying/scaling on cloud platforms (AWS/Azure/GCP). London-based with WFH.

AI AWS Azure Cloud C++ +5 skills

Senior Software Engineer C# Python AI

Salary: £40,000 - 70,000 per year Requirements Strong backend software engineering skills with C# and/or Python Strong knowledge of Computer Science fundamentals, including OOP, multithreading, design patterns, and…

Agile AI Angular AWS Azure +14 skills

Senior Java Developer – Spring Boot TDD

Salary: £40,000 - 70,000 per year Requirements: Strong backend software engineering skills and experience Strong Java and Spring Boot development experience Technical or team leadership experience, including mentoring…

Agentic AI AI AWS Cloud Design Patterns +9 skills

Client Server Limited

Python Cyber Security Software Engineer

Salary: £40,000 - 70,000 per year Requirements Advanced Python and backend software engineering experience Advanced problem-solving and critical-thinking skills Interest in learning and adopting new technologies…

AI AWS Azure Cloud C++ +6 skills

Python Software Engineer Agentic AI

Overview In this role you will design and deliver backend solutions and AI-enabled workflows that empower intelligent agents. You’ll work with a cross-functional team to implement robust APIs and prompt-driven systems…

Agentic AI Agile AI API AWS +9 skills

Python Software Engineer Cyber Security

Overview In this Python Software Engineer role, you will help build a Greenfield AI cybersecurity product within the R&D team. You’ll mainly develop backend services in Python while evaluating Rust and other…

AI AWS Azure C++ Cybersecurity +4 skills

Client Server Limited

Python Software Engineer Cyber Security

Python Software Engineer / Developer London / WFH to GBP80k Do you have strong backend Python software development experience? You could be progressing your career at the world's most advanced cybersecurity…

AI Cybersecurity Python