Senior .NET Software Engineer

Salary: $150,000 - 150,000 per year Requirements:

• We are looking for 7 or more years of professional software engineering experience delivering production systems.
• We need strong backend development experience with C#, .NET, and modern .NET frameworks.
• We want experience modernizing legacy applications or incrementally improving older systems.
• We require strong SQL database experience, including SQL Server or comparable relational databases.
• We are seeking experience designing and building RESTful APIs and integration layers.
• We value experience with third-party API integrations and data ingestion from multiple sources.
• We expect experience writing unit and integration tests and working within CI/CD delivery practices.
• We prefer experience working in Agile or Scrum environments with cross-functional teams.
• We need strong communication skills and the ability to explain technical decisions clearly.
• We are looking for someone who can operate as a senior individual contributor and mentor other engineers.

• We design, build, test, and deploy backend services and APIs using C#, .NET, and modern engineering practices.
• We support modernization efforts by helping rewrite legacy systems into modern .NET architecture.
• We develop scalable API and integration patterns for data ingestion across multiple internal and third-party sources.
• We work with SQL Server and related database technologies to build reliable, data-centric applications.
• We translate product requirements and architecture guidance into maintainable, production-ready software.
• We author technical design documentation and participate in design reviews for significant changes.
• We build resilient integrations with clear contracts, versioning strategies, error handling, logging, and observability.
• We write clean, testable code and contribute to unit, integration, and end-to-end testing practices.
• We participate in code reviews focused on performance, maintainability, resiliency, and secure coding.
• We troubleshoot production issues, support root-cause analysis, and improve application reliability.
• We partner with product, architecture, QA, DevOps, and engineering peers in Agile delivery cycles.
• We mentor junior and mid-level engineers while helping raise engineering standards across the team.

• API
• Backend
• C#
• CI/CD
• DevOps
• Support
• React
• SQL
• UX UI Design
• ASP.NET
• AI
• AWS
• Azure
• Cloud
• Cosmos DB

More:

We are partnering with a national wealth management technology organization to hire a Senior Software Engineer focused on backend .NET development, API design, and modernization of core platform applications. This role is part of a new engineering team based in Tempe and is one of the most senior individual contributor positions locally. The immediate focus is modernizing legacy applications, including rewriting older systems into modern .NET. This is a backend-heavy role centered on C#, .NET, SQL databases, API design, and integrations across multiple data sources and third-party systems. There may be some front-end exposure, but most React work is handled by dedicated front-end developers, so the strongest fit will be someone with deeper backend engineering experience than UI development. The role is based in Tempe and requires onsite presence four days per week. Compensation includes a base salary of up to $150,000 depending on experience, a 10% bonus opportunity, a 401(k) with employer match, and generous PTO. Additional benefits may include medical, dental, and vision coverage.

last updated 39 week of 2026