C# Developer .Net API Full Stack

Client Server Limited; Reigate; Hybrid; GBP 77,000 - 94,000; Full time

Benefits offered by this job

Salary £85k+ bonus

23 days + birthday off

Pension

Life Assurance

Income Protection

Critical Illness Cover

Job summary

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 division, shaping architecture and driving reliability and performance.

You can work from home most of the time with occasional Bracknell office days; strong backend, API, SQL and frontend Vue.js experience are essential, with AWS production experience a major plus.

Qualifications

• Strong C# .Net backend development experience.
• API design and distributed systems knowledge.
• Proficient in SQL and relational databases.
• Frontend knowledge with Vue.js (React okay).
• Experience with production AWS CI/CD, SQS, DynamoDB, S3, ECS or Lambda advantageous.
• Good understanding of microservices and event-driven architectures.
• Confidence to take ownership and mentor others.
• Experience in payments or regulated environments is desirable.

Responsibilities

• Own features end-to-end from API/service design through to frontend delivery.
• Design scalable backend services and APIs using C# .Net; build front-end features with Vue.js.
• Own architecture decisions within your domain and drive reliability and performance.
• Collaborate with Product, Design and Compliance to take ideas to production.
• Modernise legacy services and contribute to wider architectural direction.

Skills

C# .Net

API design

Distributed systems

SQL databases

Vue.js frontend

AWS services

Microservices

Event-driven

Mentoring

Payments domain

Tools

Vue.js

React

AWS

Job description

C# Developer / Software Engineer (.Net API Full Stack) Bracknell / WFH to £85k

Do you enjoy working across the full tech stack, taking ownership and leading projects?

You could be progressing your career in a senior, hands-on C# Developer role a global financial services company as they rebuild the international payments platform, working within the Corporate Payments division.

As a C# Developer you'll own features end-to-end, from API and service design through to frontend delivery and production including designing and developing scalable backend services and APIs using C# .Net, building customer facing features across backend and the Vue.js frontend.

As a senior team member, you'll own architecture and technical decisions within your domain, collaborate closely with Product, Design and Compliance to take features from idea to production and improve reliability, observability, testing and production performance, modernising legacy services and contributing to wider architectural direction.

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 C# .Net backend development experience
• You have strong API, system design and distributed systems knowledge
• You have experience with SQL and relational databases
• You also have a good knowledge of frontend development, ideally with Vue.js experience, although React experience is also fine
• You have experience with production AWS - CI/CD, SQS, DynamoDB, S3, ECS or Lambda advantageous
• You have a good understanding of microservices and event driven architectures
• You're comfortable taking technical ownership and mentoring others
• Experience in payments, financial services or another regulated environment is desirable

What's in it for you:

• Salary to £85k + bonus
• 23 days holiday, rising to 28 + your birthday off
• Pension, Life Assurance, Income Protection, Critical Illness Cover