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Client Server

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84 jobs

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84 jobs Posted Sort

Full Stack Developer .Net Core AWS React

HybridUKFull-time

Full-stack developer building scalable, secure backend systems in C# .NET Core and working with AWS cloud infrastructure (Docker, Terraform) within an Agile team. Hybrid role based in Sunderland with 2-3 office days per week, paying up to £55k plus quarterly bonus; React featured in the role title.

Agile AWS Cloud C# Docker +3 skills

Client Server Limited

Senior Python Developer (AWS) – Hybrid, Growth Path

Senior backend developer/consultant building bespoke AWS SaaS solutions for clients in Manchester (hybrid with WFH options). Day to day is hands-on Python/FastAPI development plus cloud infrastructure work with AWS CDK and DevOps practices to deliver end-to-end cloud solutions and influence product direction.

AWS CDK Cloud DevOps FastAPI +2 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

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

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

Python Developer / Team Lead - FinTech

Hands-on Team Lead for a core banking platform at a well-funded FinTech in London: split roughly 50/50 between hands-on Python/FastAPI architecture, refactoring and feature delivery, and leading/mentoring a small team. Stack is Python with FastAPI APIs, cloud (GCP preferred), and CI/CD.

API AWS Azure CI/CD Cloud +7 skills

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

Hybrid C#/.NET Full-Stack Engineer | AWS Microservices

A C#/.NET full-stack engineer builds high-scale .NET Core backend services using AWS microservices and real-time data for sports analytics and trading platforms. This is a hybrid role near St Albans with two days per week working from home.

Analytics Cloud C# .NET

100K – 100K £

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

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

Founding Software Engineer Python - Start-up

Overview In this Founding Software Engineer role you will shape both technology and product in a fast-growing AI startup. You’ll own the design and development of cloud-native applications, spanning backend, frontend,…

Agentic AI AI API Azure CI/CD +10 skills

Lead Software Engineer Python API - Fintech

Overview As Lead Software Engineer you will steer a small tech team to deliver features, perform refactoring, and contribute to a core banking platform. You will balance architecture work with people management to…

API Api Design AWS Azure CI/CD +8 skills

Founding Software Engineer (Python) - AI for Compliance

Client Server is seeking a Founding Software Engineer (Python) in the UK to help shape core technology and product in a fast-growing AI startup. You will own the design and build of cloud-native applications, spanning…

AI Azure CI/CD Cloud Cloud Native +2 skills

Client Server Limited

Lead Software Engineer Python Api - Fintech

Lead Software Engineer / Developer London / WFH to £120k Are you a skilled a backend focussed Python technologist with team leadership experience? You could be progressing your career at a well-funded and profitable…

API AWS Azure CI/CD Cloud +7 skills

Senior Software Engineer Python AWS - Front Office

Overview In this role you will design and build high-performance trading systems and cloud infrastructure to support front, middle and back-office operations. You will collaborate with stakeholders to translate complex…

Automation AWS CI/CD Cloud Containerization +2 skills

Backend Software Engineer Python LLM

Overview In this remote-first Backend Software Engineer role, you will build and maintain production-grade AI systems and the supporting infrastructure. You’ll own technical decisions, contribute to the evolution of a…

AI AWS Cloud Conversational AI Infrastructure as Code +4 skills