Protium is hiring Senior Backend C#/.NET Engineers to join our team in Cape Town.

We’re looking for senior backend engineers who can help us design, build, and ship production-grade APIs, services, integrations, and backend systems using C#, .NET, SQL Server, and Microsoft/Azure technologies.

This is a Cape Town-based hybrid role, with in-person office days typically 2–3 times per week at our Claremont office.

You’ll work on high-quality, API-driven systems where clean architecture, maintainability, performance, security, scalability, operational reliability, and long-term supportability matter.

As a senior engineer, you’ll be expected to take ownership of meaningful areas of delivery, shape technical approaches, make sensible trade-offs, guide implementation, support other developers, and help maintain strong engineering standards across the team.

What you’ll work on:

• Designing, building, and maintaining production‑grade APIs and ...