NET Developer

NET Developer

Location: 5 days onsite in Redmond, Washington (relocation is fine)

Must-Have Skills

1) C# /.NET Development (6+ years)

• Strong, hands-on experience developing production systems using C# across.NET Framework and modern.NET (.NET Core /.NET 6+).
• Proven experience working on large or legacy codebases, including refactoring, modernizing projects, and improving code quality.
• Experience with SDK-style project migrations, NuGet package upgrades, and .NET runtime/framework upgrades.
• Ability to write maintainable, testable code and troubleshoot complex issues in service-oriented systems.

2) Cloud Services (4+ years)

• Hands-on experience building, deploying, and operating services in a cloud environment.
• Experience developing and maintaining RESTful Web APIs hosted in the cloud.
• Practical experience with cloud environments, including subscriptions, resource groups, and service configuration.
• Familiarity with cloud-based CI/CD workflows and platform upgrades impacting live services.

3) Infrastructure as Code & DevOps Foundations (3+ years)

• Strong experience defining and maintaining infrastructure using Infrastructure as Code (IaC) tools (e.g., ARM templates, Bicep, or Terraform).
• Experience upgrading or migrating build and deployment pipelines (Azure DevOps or equivalent).
• Understanding of infrastructure modernization efforts such as pipeline migrations, environment isolation, and platform compliance requirements.
• Proven ability to improve developer productivity by strengthening build reliability, test pipelines, and automation.

Typical Day in the Role

• Design, develop, implement, test, and maintain business and computer applications software or specialized utility programs.
• Work on modernization of services, code base, and infrastructure, focusing on tasks related to business logic.
• Specific tasks include migrating project definitions to new standards, cleaning up source code warnings, upgrading NuGet packages, and modernizing old services to use updated authentication and authorization methods.
• Additional work may involve build pipeline migrations and infrastructure-level improvements, with a strong emphasis on C# and cloud experience, covering both.NET Framework and.NET Core.
• Gather and analyze system requirements, document specifications, and develop software solutions to meet client needs.
• Analyze and review enhancement requests and specifications.
• Implement system software and customize to client requirements.
• Prepare detailed software specifications and test plans.
• Code new programs to client's specifications and create test data for testing.
• Modify existing programs to new standards and conduct unit testing of developed programs.
• Create migration packages for system testing, user testing, and implementation.
• Provide quality assurance reviews.
• Perform post-implementation validation of software and resolve any bugs found during testing.

Candidate Requirements

• Must have strong technical skills in C#,.NET, cloud services, and Infrastructure as Code.
• Excessive job hopping (e.g., changing jobs every month over the past two years) is considered a red flag.
• Prior experience with large-scale enterprise systems is preferred.

Best vs. Average Candidate

• Experience splitting or migrating workloads to new repositories or isolated environments to reduce operational overhead.
• Exposure to large or legacy enterprise systems undergoing modernization.
• Experience improving test tooling or developer experience beyond pure feature delivery.
• Experience working in Agile/Scrum teams with two-week sprints.
• Ability to work independently on scoped technical initiatives while collaborating via code reviews and design discussions.
• Strong communication skills for working with full-time engineers, other vendors, and partner teams.
• Solid foundation in computer science, with strong competencies in data structures, algorithms, and software design.
• Large systems software design and development experience.
• Experience performing in-depth troubleshooting and unit testing with both new and legacy production systems.

Core Technical Skills

• C# and.NET: Strong hands-on experience across.NET Framework and modern.NET (Core /.NET 6+).
• Cloud Application Development: Building and maintaining services in cloud environments, including hosted services and backend components.
• Infrastructure as Code: Hands-on experience defining and maintaining cloud infrastructure using IaC tools (ARM templates, Bicep, Terraform).
• Build, CI/CD, and Code Hygiene: Improving build pipelines, upgrading workflows, and ensuring code quality and maintainability.
• Testing and Reliability: Improving end-to-end test coverage, diagnosing workflow issues, and implementing test automation.
• Security Best Practices: Removing legacy authentication mechanisms and implementing secure identity and access patterns.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, or related field required.
• 8+ years of experience in software engineering.