C#/.NET Developer, Senior

Responsibilities Technica Corporation is seeking a C#/.NET Developer to join our team and support our client in Washington, DC.As a .NET Developer, you will contribute to the development, enhancement, and maintenance of web applications and services that support mission‑critical operations. You will work hands‑on with the .NET framework and associated technologies to build clean, efficient, and reliable backend components that integrate seamlessly with front‑end and cloud‑based systems. In this role, you will collaborate closely with senior developers, designers, product owners, and other team members to deliver high‑quality software solutions that follow best practices and meet customer needs. You will also support defect resolution, participate in code reviews, and continually grow your skills under the guidance and mentorship of a Senior C#/.NET Developer. Key Responsibilities:Design, develop, test, and maintain application features using C#, ASP.NET, Entity Framework, and SQL Server Modify and enhance existing application code to improve performance, functionality, and maintainability Integrate third‑party components and APIs as needed Participate in the full software development lifecycle, including planning, requirements analysis, implementation, testing, and deployment Collaborate with senior developers and architects to implement technical designs and follow established patterns and standards Write clean, scalable, and maintainable code aligned with best practices and team guidelines Conduct unit and integration testing to validate functionality and ensure code quality Troubleshoot and resolve technical issues, defects, and performance bottlenecks Use Git/GitLab for source control, branching, and code collaboration Support O&M tasks such as minor enhancements, bug fixes, and performance tuning Participate in code reviews and apply feedback from senior engineers to improve your technical proficiency Assist with remediating code and package vulnerabilities identified through scans, with senior guidanceThe position would be located at a government facility in Washington, D.C. and require work to be performed onsite. Any hybrid work schedule would require customer approval. The government has established policies for on-site vs hybrid work which varies across divisions and contracts. Where allowed, remote work must be coordinated with the team lead and/or government POC, ensuring there is zero interruption with the delivery of our services.The annual base salary range for this position is $130,000 – $145,000. Please note that the salary information is a general guideline only. Technica considers factors such as scope and responsibilities of the position, candidate's work experience, education/training, key skills, location, as well as market and business considerations when extending an offer. Requirements Required Qualifications:Active Top-Secret with SCI and CI Poly eligibilityBachelor’s degree in Computer Science or related field or equivalent education and/or experience.8+ years experience as a software developer.3–5 years of professional experience developing software using C# and the .NET framework Experience with ASP.NET, Entity Framework, and SQL Server Familiarity with architectural patterns and API styles (REST, RPC) Experience writing and executing unit tests and performing integration testing Understanding of secure coding practices and willingness to follow vulnerability remediation guidance Ability to collaborate with cross‑functional teams and translate requirements into technical tasks Strong problem‑solving skills and ability to work independently when implementing assigned tasks Desired Experience with cloud platforms (AWS or Azure) Basic understanding of DevOps practices or exposure to CI/CD pipelines (GitLab preferred) Experience working with Object‑Relational Mappers (ORMs) such as Entity Framework Knowledge of SQL or NoSQL database design principles Experience with containerization tools (Docker) Familiarity with Agile/Scrum development processes Relevant certifications in .NET development or cloud technologies. Experience working in an Agile/Scrum development environment. Strong problem-solving skills and attention to detail. Excellent communication and collaboration skills. Overview About Technica: At Technica Corporation, our goal is to provide exceptional professional services and innovative technology solutions that meet or exceed our customer’s expectations. We specialize in a wide range of advanced information technology solutions from Systems Engineering to Cyber Security, and from Software Development to Product Solutions. From our locations across the DC Metro area, Hampton, Virginia, and Huntsville, Alabama, we provide technological subject matter expertise, program management and business process knowledge as a trusted advisor in support of our Department of Defense and other Federal Agency customers. EEO EQUAL EMPLOYMENT OPPORTUNITYIt is Technica's policy to affirmatively support Equal Employment Opportunity (EEO) for all qualified individuals without regard to color, gender, religion, creed, national origin, age, race, disability, gender identity, genetic information, sexual orientation, marital status, veteran status or any other characteristic protected by law. This policy covers all aspects of the employment relationship including recruiting, hiring, compensation, assignment, promotion, transfer, training, working conditions, employment longevity, retirement, employee benefits and termination.Technica's EEO philosophy promotes equal employment opportunity throughout the organization. Any form of unlawful employee harassment based on the above mentioned characteristics is prohibited. Equal Opportunity Employer Minorities/Women/Vets/Disabled/Gender Identity/Sexual Orientation.Job SummaryType: Regular Full-TimeClearance: Top Secret with SCI eligibilityTelework Option: NoTelework Schedule: None