Senior .NET Engineer - Scale E-commerce APIs (Hybrid)

Arc IT Recruitment Limited; Eastbourne; Hybrid; GBP 63,000 - 77,000; Full time

Benefits offered by this job

Bonus

Benefits

Job summary

Arc IT Recruitment Limited is seeking a Senior .NET Developer for Brighton with a hybrid work arrangement. The role focuses on building fast, reliable APIs at scale within an international e-commerce context.

You will own services end-to-end, from design to production, in a multi-disciplinary team that ships updates multiple times daily using CI/CD practices. The position offers a £70,000 base with bonus and benefits.

Qualifications

• Strong commercial C# .NET Back End experience.
• SQL Server/T-SQL, including query tuning, indexing and execution plans.
• High-traffic E-commerce or transactional systems.
• Cloud experience, ideally AWS.
• Strong RESTful API design: versioning, idempotency, caching, OpenAPI/Swagger.
• Production ownership: monitoring and profiling .NET apps (Datadog, New Relic, CloudWatch).
• Daily use of AI coding tools (Claude Code, Copilot, Cursor), with the judgement to own what they produce.
• Good engineering habits: code review, automated testing, small and frequent releases.

Responsibilities

• You'll work on a business-critical part of the platform.
• You'll build, measure and tune services running in the cloud and at the edge, owning them from design through to production.
• You'll be part of a multi-disciplinary team releasing several times a day through CI/CD.

Skills

C# .NET Back End

SQL Server / T-SQL

Cloud AWS

RESTful API design

CI/CD

AI coding tools

Code reviews & automated testing

Monitoring & profiling

Education

CS degree

Tools

Datadog

New Relic

CloudWatch

Job description

Arc IT Recruitment Limited is seeking a Senior .NET Developer for Brighton with a hybrid work arrangement. The role focuses on building fast, reliable APIs at scale within an international e-commerce context.

You will own services end-to-end, from design to production, in a multi-disciplinary team that ships updates multiple times daily using CI/CD practices. The position offers a £70,000 base with bonus and benefits.