/

Search jobs right inside Claude, ChatGPT or Cursor. Connect freehire over MCP — free, no account needed to search.

Connect MCP to your agent →

Client Server

Jobs Hiring Closed Discussion

53 jobs

Posted Sort

53 jobs Posted Sort

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

Full Stack Engineer .Net JavaScript - Sports Betting

Full Stack Engineer / Developer (C# .Net Core JavaScript) St Albans / WFH to £100k Are you an ambitious Full Stack Engineer looking to apply your technical skills in a fast paced environment where technology, data and…

C# .NET JavaScript

Senior Full Stack Engineer Vue C# .Net

A senior, hands-on full-stack engineer role at a global financial services company, helping rebuild its international corporate payments platform using Vue on the front end and C#/.NET on the back end. Based in Bracknell with a WFH option, salary up to £85,000.

Full Stack Developer .Net Core AWS React

Likely evergreen 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 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

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

Senior C#/.NET API Engineer — Full-Stack, Remote/WFH

Client Server Limited is seeking a senior C# Developer to own features end-to-end across API design, backend services and front-end delivery. You'll work on a global payments platform in the Corporate Payments…

API Api Design AWS C# SQL +1 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

Senior C# .NET Full-Stack Engineer – Remote

Senior full-stack engineer owning features end-to-end (API, backend, frontend) with C# .NET and Vue.js for an international payments platform, including architecture ownership and collaboration with Product, Design and Compliance. Mostly work-from-home with twice-weekly presence in the Bracknell office (hybrid).

API C# .NET Vue

Client Server Limited

Senior C# .NET API Engineer – Full-Stack, Remote

Senior C# engineer owning features end-to-end: designing scalable .NET APIs and backend services, building Vue.js frontend components, and driving architectural decisions while mentoring others and modernising legacy systems. Remote-friendly, with office presence twice weekly in Bracknell.

API C# .NET Vue

Client Server Limited

Lead Full Stack Engineer TypeScript Python API

Lead Full Stack Engineer at a profitable London private equity firm, working at the intersection of tech, data, strategy and investment — leading data diligence and shaping tech/data strategy for portfolio companies. Day to day spans TypeScript and Python development, cloud data platforms (AWS/Azure/GCP) and agentic AI, hybrid with three days a week in the London office.

Agentic AI AI Analytics API AWS +5 skills

100K – 125K £

Client Server Limited

Lead Full Stack Engineer (TypeScript + Python) – Hybrid London

Lead a full stack engineering effort in London, blending hands-on TypeScript and Python API development with strategic leadership of data transformation across a private equity portfolio. Hybrid role with London office presence.

API Python TypeScript

Senior Full Stack Engineer - Start-up

Open 15d On-siteUKSenior

Overview As one of the UK’s first engineers, you will own the architecture and drive end-to-end product delivery in a fast-growing sports tech start-up. You’ll build consumer-facing features from ground up, shaping…

AI API React Rust TypeScript

Client Server Limited

Full-Stack Developer, Sports Tech & End-to-End AI

HireHi, a sports technology company at the intersection of sports, data, digital insights and betting, seeks a lead software engineer in Greater London. You will shape architecture, build products from scratch, and own…

Client Server Limited

full stack developer for sports technology

Full-stack developer at a London-based sports technology company working across US sports (NFL, NBA, baseball, hockey) and betting. You'll shape architecture, build products from the ground up with TypeScript and React, own features end to end through production, and advise the team on using AI in development.

AI API React Rust TypeScript

Full Stack Engineer / Technical Lead B2B SaaS

Open 19d UKLead

Senior hands-on lead role owning the technical strategy and architecture for a real-time infrastructure company's developer ecosystem: designing APIs and SDKs, expanding client libraries, guiding open-source collaboration and mentoring engineers. Core stack is Ruby, TypeScript and React, with openness to AI tooling like Claude and Cursor.

AI API Automation Design Patterns iOS +5 skills

Client Server Limited

Mid-Level Full-Stack Engineer — Hybrid (£110k + Bonuses)

Open 22d HybridUKMiddle

Client Server Limited is seeking a mid-level Software Engineer to join a technology-driven trading company in a hybrid role based in St Albans. You will design and implement features for Payments and client systems…

AWS C# .NET Microservices

Senior Full Stack Engineer C# Vue.js

Open 22d UKSenior

Overview In questa role you will own and deliver features end-to-end across the tech stack for an international payments platform within a global financial services group. You’ll design scalable backend services in C#…

API AWS CI/CD C# Distributed Systems +13 skills

Client Server Limited

Full Stack Engineer: .NET/JS in Sports Tech (Hybrid)

Open 22d HybridUK

Client Server Limited is recruiting a Full Stack Engineer in St Albans (hybrid, two days WFH per week) for a fast-paced sports tech business, paying up to £100k. Day to day you deliver backend and frontend features across a microservices ecosystem using C# .NET Core, JavaScript/TypeScript, Angular, AWS, Kubernetes and Kafka.

Angular AWS C# .NET JavaScript +4 skills

Client Server Limited

Full Stack Engineer .Net JavaScript - Sports Betting

Open 22d HybridUK

Full stack engineer building platforms used to analyse and trade on global sports markets: designing features across a microservices ecosystem with C# .NET Core on the backend and JavaScript/TypeScript with Angular on the frontend, using AWS, Kubernetes and Kafka. Office-based in St Albans with 2 days WFH per week; salary up to £100k.

Angular AWS Cloud C# Design Patterns +9 skills