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Client Server

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80 jobs

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80 jobs Posted Sort

Senior Software Engineer Python TypeScript AI

Senior Software Engineer role at a global games software house in Manchester (with WFH options), building and enhancing AI-powered products used by ~700,000 live users. Day to day involves developing scalable applications with strong Python and TypeScript skills; salary up to £80,000.

AI Python TypeScript

Senior Python Developer - Cyber Security

New HybridUKSenior

Senior Python Developer building a new Greenfield, AI-powered security product in an R&D team in London (hybrid). Day-to-day involves rapid backend prototyping and structured delivery primarily in Python, with some Rust, TypeScript, C++, and cloud (AWS/Azure/GCP) work.

AI AWS Azure C++ GCP +4 skills

Senior Software Engineer Python TypeScript AI

Senior Software Engineer in Manchester (with WFH) at a global games software house, building and enhancing AI-powered products used by 700,000 live users. Day to day you work at the intersection of software engineering and AI, turning prototypes into production features using Python and TypeScript, earning up to £80k.

AI Python TypeScript

Client Server Limited

Senior Full-Stack Tech Lead – Ruby/TS/React, B2B SaaS, Remote

New HybridUKLead

Senior full-stack engineer / technical lead owning technical strategy and architecture for developer ecosystems, centered on API and SDK design. Day to day: driving the full development lifecycle with Ruby, TypeScript and React, mentoring engineers, reviewing contributions, and collaborating with the developer community. Hybrid London/remote, package to £130k.

API React Ruby TypeScript

Client Server Limited

Full Stack Engineer / Technical Lead B2B Saas

Technical lead role at a B2B SaaS provider of serverless real-time infrastructure that processes billions of messages daily. You'd own technical strategy and architecture for developer ecosystems, define API/SDK design standards, lead cross-team initiatives, and mentor engineers. Core stack: Ruby, TypeScript, React; mostly remote with monthly meetups at a North London office.

AI API Automation Design Patterns iOS +8 skills

Client Server Limited

Senior Full-Stack Engineer – Remote UK, AI‑Driven Fintech

Staff-level full-stack engineer owning the architecture of a real-time energy trading platform, staying hands-on building scalable systems with TypeScript, Node.js, React and AWS, collaborating across teams and influencing product decisions while using AI-assisted development practices. UK-based role.

AI AWS Node.js React TypeScript

Client Server Limited

Senior Python Backend Engineer - AI Security (Hybrid UK)

Senior Python backend engineer joining an R&D team in London to build a greenfield project in AI security, working hybrid with two office days per week. The role is primarily Python backend, with occasional work in Rust, TypeScript, or C++.

C++ Python Rust TypeScript

Client Server Limited

Lead Backend Engineer: Architect APIs & Microservices

Lead Backend Engineer at Client Server Limited in Newcastle upon Tyne, designing and implementing APIs and microservices, managing secure server environments, and providing architectural leadership while liaising with clients. Core stack: C#, .NET, Python, TypeScript, and REST APIs in a consultancy setting.

API C# .NET Microservices Python +2 skills

Client Server Limited

Backend Software Engineer Python - Technologist

Backend Software Engineer joining the R&D team of a cybersecurity firm that uses AI to defend against AI-based attacks, building a new greenfield product. Mostly backend Python with some Rust/TypeScript/C++ and cloud (AWS/Azure/GCP); hybrid role based in the Cambridge office two days a week. Salary to £80k plus bonus.

AI AWS Azure C++ Cybersecurity +5 skills

Client Server Limited

Backend Software Engineer Python R&D

Backend Python engineer in the R&D team of a Cambridge cybersecurity firm building a greenfield product to combat AI-based security attacks. Day to day is rapid prototyping and platform development, mainly in Python with exposure to Rust and cloud platforms, hybrid from the Cambridge office twice a week.

AI AWS Azure C++ Cybersecurity +5 skills

Client Server Limited

Senior Python Backend Engineer - AI Cybersecurity

Build a greenfield AI-driven cybersecurity product at Client Server Limited: as Senior Python Backend Engineer you will rapidly prototype ideas, tackle complex problems, and deliver robust backend services using Python and cloud platforms, ideally with some Rust, TypeScript, or C++ exposure.

AI Cloud C++ Cybersecurity Prototyping +3 skills

Client Server Limited

Remote Python Backend Engineer — AI & LLM Systems

Backend engineer building production-grade Python backend services and AI/LLM workflows that power conversational AI, working with AWS, TypeScript, Node.js, and asynchronous Python. Remote-first within the UK with flexible hours and monthly team meetups.

AI AWS Conversational AI Node.js Python +1 skills

Client Server Limited

python developer in cybersecurity

A Python backend developer in London building a greenfield cybersecurity product that defends against AI-based attacks. Day to day involves rapid prototyping, structured platform development, and solving complex problems using Python, cloud platforms (AWS/Azure/GCP), and some Rust, TypeScript, or C++.

AI AWS Azure C++ Cybersecurity +4 skills

Client Server Limited

Senior Python Developer - Cyber Security

Senior Python Developer joining the R&D team of a cybersecurity technology business in London (hybrid, twice a week in office) to build a new Greenfield product combating AI-based attacks — mostly backend Python work plus Rust and other emerging technologies. Salary £75k–£85k plus bonus and benefits.

AI AWS Azure C++ Cybersecurity +5 skills

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

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

React Developer Senior / Lead

Hands-on Lead React Developer owning the frontend of a core product at a scale-up: leading front-end architecture, integrating APIs and real-time data, setting tooling and build pipelines, and mentoring junior developers. Core stack: React, JavaScript/TypeScript, Redux/Context API. London-based with hybrid/remote flexibility; salary up to 90k plus potential equity.

API JavaScript React Redux TypeScript

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

Client Server Limited

Backend Engineer TypeScript – Remote/WFH Cyber Security

Builds and owns TypeScript backend services for a cybersecurity company's customer portal, taking features from rapid prototype to production-ready systems with a security focus. Hybrid role: two days per week in the Cambridge office, the rest working from home.

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