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OkWhen

Senior .NET Software Engineer

OkWhen

. Design, build, test, deploy, and maintain production software .

Posted 9/17/2026full-timeRemote • United StatesSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates extensive experience in software development with a focus on C#, .NET, and ASP.NET Core, alongside strong capabilities in building and maintaining web applications using Angular and SQL Server. Proven ability to design and optimize backend services, APIs, and databases while ensuring application reliability and performance.

Highest-signal resume keywords
C#.NETASP.NET CoreAngularSQL Server

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Backend DevelopmentAPI DevelopmentDatabase DesignQuery OptimizationAutomated TestingCI/CDDebuggingREST APIsSaaS PlatformsLegacy Application Modernization
Soft Skills
Strong CommunicationIndependent WorkProblem-SolvingMentoring
Tools & Technologies
.NET MAUIGitAzureAWSAI-Assisted Development Tools
Industry Keywords
Event ManagementRegistration SystemsPaymentsLearning Management SystemsCommunications Systems

Tech Stack

Tools & technologies
AngularASP.NETAWSAzureCloudDistributed SystemsSQLTypeScript.NET

About the role

Key responsibilities & impact
  • 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
  • Own meaningful parts of the application and deliver reliable software independently
  • Improve system performance, reduce technical debt, and turn operational problems into maintainable products

Requirements

What you’ll need
  • 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
  • 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

Benefits

Comp & perks
  • 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