Senior .NET Engineer

RePass Cloud Pty Ltd; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

RePass Cloud Pty Ltd is seeking a senior backend engineer to own a domain end to end within a small, technically capable team. You will design and ship production-grade .NET services, APIs, and integrations for client environments, with autonomy and clear technical writing.

Responsibilities include building .NET Web APIs, shaping architecture, deploying on Azure or AWS, modelling relational data, and delivering robust integrations.

Qualifications

• Strong .NET and C# experience with production deployments.
• Solid API design fundamentals, including REST conventions, versioning, and error handling.
• Experience with relational databases such as SQL Server or PostgreSQL.
• Cloud experience, with Azure preferred.
• Clear written communication and the ability to work independently across time zones.

Responsibilities

• Design and build .NET Web APIs and backend services that meet production reliability standards.
• Contribute to cloud infrastructure and deployment decisions on Azure or AWS.
• Model relational data and optimise queries for performance and correctness.
• Build integrations with third-party systems and external APIs.
• Produce technical documentation and make architecture decisions that shape the service.

Skills

.NET

C#

REST API design

SQL/Database design

Cloud (Azure)

Communication

Tools

Docker

Kubernetes

GitHub Actions

Azure DevOps

Job description

Role overview

A senior backend role for an engineer who can own a domain end to end within a small, technically capable team. The work focuses on designing and shipping production-grade .NET services, APIs, and integrations for client environments, with a strong emphasis on autonomy and clear technical writing.

Responsibilities

• Design and build .NET Web APIs and backend services that meet production reliability standards.
• Contribute to cloud infrastructure and deployment decisions on Azure or AWS.
• Model relational data and optimise queries for performance and correctness.
• Build integrations with third-party systems and external APIs.
• Produce technical documentation and make architecture decisions that shape the service.

Requirements

• Strong .NET and C# experience with production deployments.
• Solid API design fundamentals, including REST conventions, versioning, and error handling.
• Experience with relational databases such as SQL Server or PostgreSQL.
• Cloud experience, with Azure preferred.
• Clear written communication and the ability to work independently across time zones.

Nice to have

• Experience with containerisation using Docker or Kubernetes.
• CI/CD pipeline experience with tools such as GitHub Actions or Azure DevOps.
• Prior consulting or client-facing delivery experience.