C# Developer / Technical Lead

Client Server Limited; Bracknell; Hybrid; GBP 80,000 - 95,000; Full time

Job summary

Client Server Limited is seeking a C# Developer / Technical Lead to drive architecture, delivery and production support for a global financial services platform. You will remain hands-on while leading a squad, owning API design and technical decisions, and guiding code quality.

You will mentor engineers, foster collaboration with Product Managers on roadmaps, and champion AI tools across the SDLC. The role offers hybrid work with Bracknell office collaboration twice weekly.

Qualifications

• Strong technical/team leadership within a software engineering team.
• Backend development with C# .Net; distribution and microservices experience.
• Experience designing APIs, system architecture and code quality standards.
• Frontend exposure with Vue.js, React or Angular and SQL proficiency.
• Experience with AWS services (SQS, DynamoDB, S3, ECS, Lambda) is a plus.

Responsibilities

• Lead the squad across architecture, development, delivery and production operations while remaining hands-on.
• Own system architecture, API design, technical decisions and code quality.
• Collaborate with Product Managers on roadmaps, delivery plans and priorities.
• Provide mentoring, 1-2-1s and feedback to engineers and drive continuous improvement.
• Champion AI/agentic coding tools across the SDLC and drive process improvements.

Skills

Technical leadership

C# / .Net

SQL

AWS

Distributed systems

Vue.js

React

Angular

GitHub Actions

AI tools

Tools

Claude Code

Cursor

Copilot

GitHub Actions

Job description

Bracknell, Berkshire | £80k - £95k per year

C# Developer / Technical Lead (C# .Net SQL AWS) Lead Bracknell / WFH to £95k

Are you a skilled C# Developer with strong technical / team leadership experience?

You could be joining a global financial services company as they rebuild the international payments platform, working within the Corporate Payments division.

As a C# Developer / Technical Lead you'll lead your Squad across architecture, development, delivery and production operations whilst remaining hands-on, writing production code and tackling the most technically complex problems. You'll own system architecture, API design, technical decisions, design reviews and code quality and partner with Product Managers on roadmaps, delivery plans and priorities.

Providing technical leadership, mentoring, 1-2-1s and feedback you'll help to develop the engineers within the team, ensuring continuous improvement and setting standards for how the team builds, tests and ships. You'll champion AI and agentic coding tools across the software development lifecycle, driving process improvements and modern techniques.

This is ideal for a senior engineer who wants to lead from the front - combining technical ownership, hands-on development and genuine responsibility for the growth of the team.

Location / WFH:

You can work from home most of the time, joining colleagues in the Bracknell office twice a week.

About you:

• You have strong experience providing technical / team leadership within a software engineering team
• You have strong backend development skills with C# .Net (would also consider other OO languages)
• You have strong system design experience, particularly distributed systems and microservices
• You have frontend experience with Vue.js, React or modern Angular
• You have a good knowledge of SQL and relational databases
• You have production experience with AWS, ideally including SQS, DynamoDB, S3, ECS and Lambda
• You have experience owning CI/CD and release processes, such as GitHub Actions
• You have hands-on experience with Claude Code, Cursor, Copilot or similar agentic tools, with a clear view on effective AI adoption
• You're collaborative and pragmatic with great communication skills, with the ability to explain technical decisions to both engineering and business stakeholders
• A background in payments, FX or another regulated industry would be of benefit

What's in it for you:

• Salary to £95k + bonus
• 23 days holiday, rising to 28 + your birthday off
• Pension, Life Assurance, Income Protection, Critical Illness Cover