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

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

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.