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Client Server

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158 jobs

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158 jobs Posted Sort

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

Machine Learning Engineer MLOps Python LLM AWS

A senior Machine Learning Engineer role at a London SaaS FinTech whose capital-markets tools serve investment banks and research providers. The hire takes hands-on technical ownership of complex systems, working with MLOps, Python, LLMs and AWS, with WFH flexibility and pay up to £90k.

AWS Fintech LLM Machine Learning MLOps +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

Client Server Limited

Lead Data Engineer GCP BigQuery DBT

RemoteEuropeLead

Lead a squad of data engineers at a global FinTech/CFD trading company in Kraków, delivering batch and real-time Kafka data pipelines on GCP. Core stack: BigQuery, dbt, SQL, Python, with Medallion architecture, data contracts, observability and people management.

Analytics BigQuery Data Governance Data Pipelines Data Quality +9 skills

up to 35K PLN / mo

Backend Software Engineer C++ Python - Trading

A backend engineer builds and optimizes data-driven systems in C++ and Python that power systematic trading strategies, collaborating with senior engineers and quantitative researchers in a Linux environment at a tech-led trading firm.

C++ Linux Python

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

Client Server Limited

Backend Software Engineer C++ Python - Trading

UKFull-timeLead

Hands-on backend engineer at a systematic trading firm in London, designing, implementing and optimising C++ and Python components that power proprietary, data-driven trading strategies, collaborating with experienced engineers and quantitative researchers. Office-based Monday-Friday near St James Park; salary up to £125k.

C++ Linux Python

90K – 125K £

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

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

Client Server Limited

Python Software Engineer Conversational AI

RemoteUKFull-time

Python Software Engineer Conversational AI London, Greater London | £80k - £90k per year Python Software Engineer / Developer (Conversational AI) Remote UK to £90k Are you a backend focussed Python Software Engineer…

Agentic AI AI AWS Conversational AI Infrastructure as Code +4 skills

Backend Software Engineer C++ Python - Trading

Backend Software Engineer / Developer (C++ Python) London / WFH to £125k Are you a bright, ambitious technologist with strong C++ and Python skills combined with a good understanding of the trade lifecycle? You could…

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

Overview In this Lead Software Engineer role, you’ll stay hands-on while guiding a technical team to build a complex SaaS calculation platform for cyber security insurance. You’ll shape architecture, define…

Azure CI/CD Cybersecurity Databricks Design Patterns +7 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