Senior .NET Software Engineer

About OkWhen OkWhen builds technology that powers live, virtual, and hybrid events. Their platform supports conference management, registration, payments, mobile apps, content libraries, webinars, LMS functionality, CEU tracking, sponsor management, and operational workflows. The Outcome We’re Hiring For You will own meaningful parts of the application and consistently deliver reliable software without requiring constant supervision. You will improve system performance, reduce technical debt, and turn operational problems into simple, maintainable products. This role requires understanding the existing system, making sound technical decisions, and following work through from discovery to production. Responsibilities: — Design, build, test, deploy, and maintain production software — Develop backend services and APIs using C# and ASP.NET/.NET — Build and maintain web applications using Angular — Design, optimize, and troubleshoot SQL Server databases and queries — Maintain and extend mobile applications using .NET MAUI — Investigate and resolve production issues — Improve application reliability, performance, security, and observability — Write automated tests and maintain technical documentation — Participate in code reviews and establish engineering standards — Collaborate with product, operations, and event-production teams — Break ambiguous business problems into clear technical plans — Use AI-assisted development tools responsibly to improve speed without sacrificing quality Requirements: — 7+ years of professional software development experience — Strong commercial experience with C#, .NET, and ASP.NET Core — Strong experience with Angular and TypeScript — Advanced working knowledge of SQL Server, database design, and query optimization — Production experience with .NET MAUI or Xamarin — Experience designing and consuming REST APIs — Experience with Git, CI/CD, debugging, and automated testing — Demonstrated ability to work independently in an existing codebase — Strong written and verbal communication — Comfortable owning outcomes, not just completing assigned tasks Preferred Qualifications: — Experience with SaaS platforms — Experience with event management, registration, payments, LMS, or communications systems — Cloud experience with Azure or AWS — Experience with distributed systems, queues, integrations, or real-time applications — Experience modernizing legacy applications — Experience mentoring other developers Conditions: — Health Care Plan (Medical, Dental & Vision) — Retirement Plan (401k, IRA) — Paid Time Off (Vacation, Sick & Public Holidays) — Family Leave (Maternity, Paternity) — Training & Development — Work From Home