/

Point your AI agent at freehire and let it find you a job. A CLI and an MCP server over the whole job API — no browser.

Get the CLI →

Client Server

Jobs Hiring Closed Discussion

57 jobs

Posted Sort

57 jobs Posted Sort

Client Server Limited

Software Engineer Python AI - Renewable Energy

An in-house engineer at a rapidly scaling UK renewable energy business builds AI and conventional software for teams across development, asset management, trading and investment — taking ambiguous problems from discovery through prototyping to production. Core stack: Python, APIs, data integration, LLMs/retrieval, CI/CD; London office with 2 days WFH.

Agentic AI AI API Automation CI/CD +4 skills

90K – 120K £

Software Engineer Python AI - Renewable Energy

Design, build and run production Python software that applies AI/LLMs, APIs and data integration to real problems at a fast-scaling renewable energy company — prototyping from PoC to production and owning reliability, monitoring and security. Hybrid role based in London, salary up to £120k.

Agentic AI AI API Automation LLM +2 skills

Software Engineer Python Django SQL - FinTech

HybridUKFull-time

Builds internal platforms and applications for a scaling FinTech product serving investment management, using Python, Django and SQL. The engineer collaborates with stakeholders to translate requirements into scalable solutions and owns projects end to end in a hybrid London role.

Agentic AI AI API Django Fintech +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

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

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

Client Server Limited

London Backend Engineer (C#/.NET) - Sports Trading, Onsite + Bonus

Backend Engineer (C#/.NET) joining a sports trading team onsite in London, building robust backend systems, APIs and data flows for high-availability trading. Core stack: C#/.NET, ASP.NET, and SQL or Oracle.

API C# .NET Oracle SQL

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

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

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

react developer for live events

Lead/ senior React developer for a startup building a financial operating system for live events (payments, queue reduction). Day to day: own front-end architecture in React/TypeScript, integrate payment APIs and real-time data, mentor juniors. London office 3-4 days/week for first 6 months, then flexible.

API JavaScript React Redux TypeScript

Client Server Limited

Software Engineer Python GenAI LLM - Finance

HybridUKContract

Software Engineer Python GenAI LLM - Finance London, Greater London | £140k - £180k per year Software Engineer / Developer (Python GenAI LLM RAG) London 12 month FTC to £180k Are you a Senior Software Engineer with a…

Agentic AI API Claude Code Data Engineering Developer Experience +7 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

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

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

Client Server Limited

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

Senior C#/.NET engineer owning features end-to-end — API design, backend services, and Vue.js front-end delivery — on a global payments platform in the Corporate Payments division. Mostly work-from-home with occasional office days in Bracknell; AWS production experience is a plus.

API Api Design AWS C# SQL +1 skills