Company · 77 open roles
Careers at Client Server
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77 positions at Client Server
Technical Product Manager, Platform Engineering
Client Server·Cheapside 80, Newell Green
<p><b>Salary: £100,000 - 100,000 per year</b></p> <b>Requirements:</b> <ul><li>Experienced Product Manager with a strong technical background and understanding of software development</li><li>Comfortable collaborating in a team using agentic and human-led software develop…
Senior Java Developer – Spring Boot TDD
Client Server·Cheapside 80, Manchester
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong backend software engineering skills and experience</li><li>Strong Java and Spring Boot development experience</li><li>Technical or team leadership experience, including mentoring and coach…
Backend Software Engineer C#/.NET AWS
Client Server·Cheapside 80, Bracknell
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong experience developing backend services with C# and .NET Core</li><li>Experience building production APIs</li><li>Good SQL skills</li><li>Experience with system design, software architectur…
Python Cyber Security Software Engineer
Client Server·Cheapside 80, London
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Advanced Python and backend software engineering experience</li><li>Advanced problem-solving and critical-thinking skills</li><li>Interest in learning and adopting new technologies</li><li>Experi…
Software Engineer Python Django SQL FinTech
Client Server·Cheapside 80, Fitzrovia
<p><b>Salary: £80,000 - 80,000 per year</b></p> <b>Requirements:</b> <ul><li>We require a BSc degree in a STEM discipline from a top tier university.</li><li>We require strong Python coding skills, including Django experience.</li><li>We require a good understanding of AP…
Platform Engineer Azure IaC C# .NET
Client Server·Cheapside 80, Newell Green
<p><b>Salary: £100,000 - 100,000 per year</b></p> <b>Requirements:</b> <ul><li>Were looking for an experienced Platform Engineer with experience in SaaS product environments.</li><li>You have strong infrastructure-as-code experience, ideally with OpenTofu and/or Terraform…
Software Developer / Team Lead C# .NET
Client Server·Cheapside 80, Newell Green
<p><b>Salary: £95,000 - 95,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong experience providing technical or team leadership within a software engineering team</li><li>Strong backend development skills with C# .NET; experience with other object-oriented languages…
C++ Software Engineer - Front Office Trading
Client Server·Cheapside 80, London
<p><b>Salary: £100,000 - 100,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong C++ backend development experience</li><li>Experience working with traders in Front Office trading environments</li><li>Excellent communication and stakeholder management skills</li><li>…
Mobile Developer C++ Swift - Cyber Security
Client Server·V7 Saxon Gate, Milton
<p><b>Salary: £80,000 - 80,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong C++ development skills combined with Swift and macOS experience</li><li>Comfortable working autonomously and making technical decisions while collaborating effectively within a team</li><l…
Staff Engineer Full Stack - Energy Trading
Client Server·Cheapside 80, Manchester
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Product-focused Software Engineer experience</li><li>Strong technical problem-solving skills</li><li>Experience working with Full Stack TypeScript, Node, React, and AWS</li></ul> <b>Responsib…
TypeScript Developer Cyber Security
Client Server·Market Hill, Cambridge
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>We are looking for a backend-focused TypeScript Developer.</li></ul> <b>Responsibilities:</b> <ul><li>We will help develop next-generation software that protects organisations from increa…
Red Team Operator Cyber Security
Client Server·Full Remote
<p><b>Salary: £80,000 - 80,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong experience in a similar Red Team / Offensive Security role</li><li>Up to date with emerging adversary tradecraft, tooling and TTPs relevant to red team operations</li><li>Advanced problem …
Software Engineering Manager / Team Lead
Client Server·Cheapside 80, Newell Green
<p><b>Salary: £95,000 - 95,000 per year</b></p> <b>Requirements:</b> <ul><li>Experience leading multi-disciplinary Agile, product engineering teams delivering complex, maintainable and commercially valuable software solutions</li><li>Hands-on engineering background, ideal…
Python Developer
Client Server·V7 Saxon Gate, Milton
<p><b>Salary: £65,000 - 65,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong Python backend software engineering experience</li><li>Advanced problem-solving and critical thinking skills</li><li>Willingness to learn and pick up new technologies</li><li>Experience wi…
Software Engineer C++ Swift MacOS
Client Server·V7 Saxon Gate, Milton
<p><b>Salary: £80,000 - 80,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong C++ development skills combined with Swift and macOS experience</li><li>Comfortable working autonomously and making technical decisions, while collaborating effectively within a team</li><…
Senior C# Developer .Net Core FinTech
Client Server·Clarence Street, Shieldfield
<p><b>Salary: £100,000 - 100,000 per year</b></p> <b>Requirements:</b> <ul><li>We require a minimum 2.1 BSc in Computer Science or a similar technical discipline from a top-tier or Russell Group university, supported by A-level grades of A or above.</li><li>We are looking…
Application Security Engineer JavaScript
Client Server·The Mall, The City
<p><b>Salary: £80,000 - 80,000 per year</b></p> <b>Requirements:</b> <ul><li>We have strong experience in web application security and offensive security testing.</li><li>We have hands-on expertise in penetration testing and reverse engineering.</li><li>We have a deep und…
Software Engineer Java API Kafka AWS
Client Server·Cheapside 80, London
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong Java server-side development experience</li><li>Good knowledge of messaging, including Kafka experience</li><li>AWS experience</li><li>Good knowledge of SQL, ideally PostgreSQL</li><li>Exp…
JavaScript Developer Angular Tech for Good
Client Server·Cheapside 80, London
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>We are looking for someone with front end experience in JavaScript and modern Angular; we use Angular 21.</li><li>We need experience with relational databases and SQL query writing.</li><li>We ne…
Lead Software Engineer C#.Net
Client Server·Cheapside 80, Reigate
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Expertise with C# .NET Core backend software development on large, scalable systems with complexity</li><li>Strong technical leadership experience, taking ownership of features rather than managi…
Full Stack Engineer C#.Net Agentic AI
Client Server·Cheapside 80, Reigate
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong full stack development experience with C# .Net and modern front end technologies such as JavaScript or TypeScript</li><li>Experience building cloud-based SaaS applications</li><li>Hands-on…
Senior Backend Developer Node.js TypeScript
Client Server·Warwick Street 104, Deritend
<p><b>Salary: £80,000 - 80,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong backend software engineering experience with Node.js and TypeScript</li><li>Experience with Kafka and event-driven architectures</li><li>Good knowledge of microservices, RESTful APIs, and …
Principal Java Developer
Client Server·Cheapside 80, London
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Experience within a financial services or Fintech environment</li><li>Strong Java development skills, including multi-threading and concurrency</li><li>Experience with Spring Boot and microservic…
Senior AI Engineer - Finance
Client Server·Cheapside 80, London
<p><b>Salary: £40,000 - 70,000 per year</b></p> <b>Requirements:</b> <ul><li>Strong senior-level software engineering experience with Python and TypeScript</li><li>Genuine enthusiasm for AI and interest in applying it in a real-world financial setting</li><li>Experience i…