C# developer job description

About the role
We are hiring a Mid-Level C# Engineer to build and maintain production .NET services used by external customers and internal teams. You will work in a remote engineering team, contribute to feature delivery, and improve existing code with guidance from senior engineers.

What you'll do
- Build APIs and background services using C#, .NET 9/10, ASP.NET Core, and EF Core.
- Write maintainable application code, unit tests, and integration tests.
- Debug production issues using logs, metrics, traces, and database queries.
- Participate in code reviews and technical planning.
- Improve performance, validation, error handling, and reliability in existing services.
- Collaborate with product, QA, and platform engineers to ship changes safely.

What you'll bring
- Professional experience building C# applications in a production environment.
- Working knowledge of ASP.NET Core, dependency injection, async/await, REST APIs, and SQL.
- Ability to reason about trade-offs and ask for help early.
- Care for readable code, tests, and clear communication in a remote setting.

Nice to have
- Experience with Azure or AWS, Docker, OpenTelemetry, message queues, or CI/CD pipelines.
- Familiarity with frontend integration, security basics, or legacy .NET modernization.

About the role
We are hiring a Senior C# Engineer to own important .NET services from design through operation. You will make technical decisions, mentor engineers, and improve the reliability, security, and maintainability of systems that support customer-facing workflows.

What you'll do
- Design and implement ASP.NET Core APIs, workers, and data access layers using modern C# and .NET 10.
- Lead technical discovery for ambiguous features and break work into safe delivery steps.
- Review designs and pull requests with attention to correctness, operability, and long-term cost.
- Improve observability, incident response, performance, and deployment safety.
- Model data with EF Core and SQL while handling concurrency, transactions, and migrations.
- Mentor mid-level engineers through pairing, feedback, and practical examples.

What you'll bring
- Strong production experience with C#, ASP.NET Core, EF Core or Dapper, and relational databases.
- Sound judgment around service boundaries, asynchronous processing, caching, and resilience.
- Ability to debug complex issues across application code, infrastructure, and data.
- Clear written communication and comfort working across product and engineering teams.

Nice to have
- Experience with distributed tracing, Kubernetes, Azure Service Bus, Kafka, Redis, or identity platforms.
- Background modernizing .NET Framework applications or evolving modular monoliths.

About the role
We are hiring a Lead C# Engineer to guide the technical direction of a remote .NET team. You will stay hands-on while setting standards, shaping architecture, and helping engineers make decisions that balance delivery, reliability, and maintainability.

What you'll do
- Lead design for major C#/.NET systems, including APIs, workers, integrations, and data flows.
- Define engineering practices for testing, observability, code review, security, and incident response.
- Partner with product and leadership to turn business goals into technical plans and milestones.
- Coach engineers through design reviews, pairing, feedback, and career development input.
- Identify architectural risks, simplify legacy areas, and plan incremental modernization.
- Represent the team in cross-functional technical discussions and vendor or platform decisions.

What you'll bring
- Deep experience delivering and operating production systems with C#, ASP.NET Core, and SQL.
- Strong architectural judgment across modular monoliths, distributed systems, messaging, and cloud platforms.
- Proven ability to raise team quality without creating unnecessary process.
- Calm leadership during incidents, ambiguity, and competing priorities.
- Excellent written communication for remote collaboration and decision records.

Nice to have
- Experience with Azure or AWS architecture, identity and access management, OpenTelemetry, Kubernetes, or regulated environments.
- Prior responsibility for technical roadmaps or multi-team platform initiatives.