Mid-Level .NET/C# Developer for Federal IT Modernization

Tetra Tech; Washington (District of Columbia); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Medial, dental, vision, life insurance

401(k) with company matching

Tuition Assistance

Paid holidays and PTO

Commuter benefits

Job summary

Halvik Corp seeks an Applications Programmer (Mid-Level .NET/C# Developer) to build, modernize, and maintain web applications supporting the FHWA Office of Policy. You will work on TMAS, HPMS, PIDP, and ITIP platforms, delivering robust web apps with C#/.NET in Azure.

Role includes SDLC participation, legacy modernization, Azure PaaS migrations, automated testing with Playwright, and Azure DevOps pipelines. Contribute to national transportation policy through IT solutions.

Qualifications

• Bachelor's degree in Computer Science, Information Systems, Engineering, Business, or related field.
• 7+ years of professional IT experience, with at least 5 years in software development and applications programming.
• 5+ years developing enterprise web apps with C# and .NET; upgrading to .NET Core/10.
• 3+ years writing complex SQL; working with SQL Server or Oracle; LINQ experience.
• Proficient with Git and collaborative branching/merging strategies.
• 2+ years in Agile software development; participating in sprints and translating stories to specs.
• Knowledge of JSON/XML formats for data interchange.
• Experience with IIS v10 and Windows Server environments.
• Analytical, troubleshooting, and debugging skills; strong documentation.
• Excellent written and verbal communication with stakeholders.

Responsibilities

• Participate in all SDLC phases in an Agile environment from requirements to deployment.
• Analyze business applications and design robust, reusable software tools and subsystems.
• Maintain and expand automated testing with Playwright for regression and integration tests.
• Modernize legacy apps; upgrade to newer .NET frameworks and cloud hosting.
• Perform peer code reviews and ensure code quality, security, and design adherence.
• Collaborate with developers, DBAs, architects, and stakeholders to translate requirements into IT solutions.
• Develop and maintain technical docs including architecture, designs, and DB schemas.
• Support deployments and provide maintenance assistance outside core business hours when needed.

Skills

Seven plus years IT experience

Five plus years software development

C# & .NET expertise

LINQ data manipulation

Agile SDLC experience

JSON & XML

Strong debugging and analytical skills

Effective communication

Education

Bachelor's degree in Computer Science / Information Systems / Engineering

Tools

Git

Azure DevOps

Playwright

Blazor

Telerik UI / Telerik Reporting

Syncfusion Blazor

Azure (App Services / Functions / SQL)

SQL Server / Oracle

Job description

Halvik Corp seeks an Applications Programmer (Mid-Level .NET/C# Developer) to build, modernize, and maintain web applications supporting the FHWA Office of Policy. You will work on TMAS, HPMS, PIDP, and ITIP platforms, delivering robust web apps with C#/.NET in Azure.

Role includes SDLC participation, legacy modernization, Azure PaaS migrations, automated testing with Playwright, and Azure DevOps pipelines. Contribute to national transportation policy through IT solutions.