Backend Software Engineer – Hybrid (AWS, .NET, Data Platform)

Client Server; Greater London; Hybrid; GBP 28,000 - 49,000; Full time

Benefits offered by this job

25 days holiday

Pension

Private medical and dental care

Life assurance

Income protection

Gym subsidy and wellness apps

Cycle to work scheme

Stock options

Family leave and sabbaticals

Career development budget

Job summary

Client Server is hiring a Backend Software Engineer in London for a Greenfield Market Data platform built with C# and deployed to AWS. You will contribute across the full development lifecycle and provide .NET expertise in an Agile team.

Strong C#/.NET, API development, SQL and design pattern knowledge are essential. Familiarity with Terraform, CI/CD and AI tools will help drive high-throughput, low-latency solutions.

Qualifications

• Strong C# .Net skills required.

Responsibilities

• Collaborate with DevOps and Product Management within an Agile team environment.
• Work on a Greenfield Market Data platform built with C# and deployed to AWS.
• Contribute across the full development lifecycle, from requirements and design through to production.
• Provide subject matter expertise on the .Net stack.
• Take part in technical design discussions.
• Use Apache Flink with Java for large-scale data processing.
• Assess and recommend new and emerging technologies, using the best tool for the job.

Skills

C# .NET

Design patterns (SOLID, DRY, KISS)

High throughput / low latency

API development

SQL

Agentic AI tools

Mentoring juniors

Java familiarity

Tools

Terraform

CI/CD

AWS

Job description

Client Server is hiring a Backend Software Engineer in London for a Greenfield Market Data platform built with C# and deployed to AWS. You will contribute across the full development lifecycle and provide .NET expertise in an Agile team.

Strong C#/.NET, API development, SQL and design pattern knowledge are essential. Familiarity with Terraform, CI/CD and AI tools will help drive high-throughput, low-latency solutions.