Full Stack Software Engineer (.NET / React / PostgreSQL)

Full Stack Software Engineer (.NET / React / PostgreSQL)

Koniag IT Systems, LLC, a Koniag Government Services company, is seeking experienced Full Stack Software Engineer (.NET / React / PostgreSQL) with a TS/SCI security clearance to support KITS and our government customer in Washington, DC.

The selected candidates will join an Agile development team responsible for modernizing mission-critical federal applications supporting records management, document review, FOIA workflows, case management, and electronic records processing. The team is developing a modern enterprise platform utilizing React,.NET and PostgreSQL stack.

This is an opportunity to work on a high-visibility federal modernization effort and help replace legacy systems with scalable, modern architecture.

Essential Functions, Responsibilities & Duties may include, but are not limited to:

• Design, develop, test, and maintain enterprise web applications using React and.NET
• Develop RESTful APIs and backend services
• Design and implement PostgreSQL database structures, queries, and data access layers
• Participate in Agile ceremonies including sprint planning, daily standups, backlog grooming, and retrospectives
• Collaborate with Business Analysts, Product Owners, Architects, Test Engineers, and DevSecOps personnel
• Develop and maintain automated unit, integration, and regression tests
• Support CI/CD pipeline implementation and deployment automation
• Participate in code reviews and contribute to software quality initiatives
• Troubleshoot and resolve software defects and performance issues
• Create technical documentation and support system demonstrations

Required Qualifications:

• Bachelor's degree in Computer Science, Information Systems, Engineering, or related field or equivalent experience with High School Diploma
• 6+ years of software development experience
• Strong experience developing applications using C# and.NET
• Strong experience developing modern user interfaces using React
• Experience with PostgreSQL, Oracle or other enterprise relational databases
• Experience developing REST APIs and service-oriented architectures
• Experience using Git and modern source control practices
• Experience working within Agile/Scrum teams
• Strong written and verbal communication skills
• Active TS/SCI clearance required
• U.S. Citizenship required

Preferred Qualifications:

• Experience supporting federal government customers
• Experience with Oracle Database
• Experience with CI/CD tools and DevSecOps practices
• Experience implementing role-based security models
• Experience with enterprise workflow or case management systems
• Experience with document management, records management, FOIA, or related business processes

Desired Technical Skills:

• React
• TypeScript
• C#
• .NET 8+
• PostgreSQL
• REST APIs
• GitHub
• GitHub Actions
• Docker
• Agile / Scrum
• Automated Testing
• DevSecOps

Our Equal Employment Opportunity Policy

The company is an equal opportunity employer. The company shall not discriminate against any employee or applicant because of race, color, religion, creed, ethnicity, sex, sexual orientation, gender or gender identity (except where gender is a bona fide occupational qualification), national origin or ancestry, age, disability, citizenship, military/veteran status, marital status, genetic information or any other characteristic protected by applicable federal, state, or local law. We are committed to equal employment opportunity in all decisions related to employment, promotion, wages, benefits, and all other privileges, terms, and conditions of employment.

The company is dedicated to seeking all qualified applicants. If you require an accommodation to navigate or apply for a position on our website, please get in touch with Heaven Wood via e-mail at View email address on click.appcast.io or by calling View phone number on click.appcast.io to request accommodations.