Junior – Mid .NET Software Developer
Location: Hybrid/onsite in Bethesda, MD – onsite 2-3 days
All candidates MUST:
Be local to the DC Metro area AND
have the ability to obtain and maintain a Public Trust Clearance
We are seeking a Jr/Mid level .NET Software Developer to join our task force supporting the Government Health and Safety Solutions Operation in Bethesda, MD. This role supports mission-critical federal health enterprise systems and provides the opportunity to work on modern, scalable solutions in both on-prem and Azure cloud environments.
Position Overview
The selected candidate will research, design, develop, and maintain enterprise applications for our Leidos clients using Microsoft .NET technologies and Azure cloud services. This role involves full lifecycle development in an Agile environment, following secure development practices and modern DevSecOps methodologies.
Responsibilities
- Design, develop, test, and maintain scalable, secure, and maintainable enterprise applications
- Develop .NET applications on Microsoft Azure, including Azure Functions, Web APIs, and Logic Apps
- Write clean, defect-free code following software engineering best practices (code reuse, refactoring, CI/CD, secure coding, TDD)
- Support software configuration management and understand software component interfaces and dependencies
- Build and maintain CI/CD pipelines using GitHub Actions, DevSecOps, and the Azure platform
- Collaborate with customers, analysts, architects, DBAs, operations, and testers in an Agile Scrum environment
- Contribute proactively to software quality, continuous improvement, and cloud modernization initiatives
- Gain and apply working knowledge of Azure AI Foundry and Copilot Studio to support intelligent and AI-enabled application capabilities
Key Technical Responsibilities
- Design and develop applications using ASP.NET MVC, .NET Core, REST, XML
- Develop C# applications using Microsoft Visual Studio and ORM frameworks
- Build Windows console applications using object-oriented principles
- Develop and maintain SQL Server, MySQL database scripts using SQL and T-SQL
- Design and develop responsive web user interfaces using HTML5, JavaScript, Bootstrap, jQuery
- Design and develop graphs and charts using Telerik UI and third-party components
- Design and implement Web Services, WCF, and Web APIs
- Implement middleware and application-level security and authentication
- Develop reports and dashboards using Power BI and SSRS
Required Education Experience & Skills
- Bachelor’s degree in Computer Science, Information Technology, or a related discipline
- 2-4 years of relevant professional experience
- Strong experience with C#, ASP.NET MVC, .NET Core, ADO.NET, Entity Framework
- Experience developing RESTful and SOAP-based web services
- Experience developing .NET applications in Microsoft Azure
- Hands-on experience with Azure Functions, Web APIs, and Logic Apps
- Experience building enterprise-scale applications using databases, Windows services, and web services
- Strong understanding of object-oriented design and C# console application development
- Front-end experience with HTML5, CSS3, JavaScript, Bootstrap, jQuery, AJAX
- Experience with Telerik UI or similar third-party UI frameworks
- Strong experience with SQL Server, T-SQL, stored procedures, and functions
- Experience creating reports and dashboards using Power BI and SSRS
- Proficiency with Git and modern source control practices
- Familiarity with Azure DevSecOps and cloud security best practices
- Working knowledge of Azure AI Foundry and Copilot Studio, or willingness to learn
- Ability to multitask and thrive in a fast-paced, dynamic environment
- Strong verbal and written communication skills
Preferred Qualifications
- Experience working in federal or healthcare environments
- Microsoft Certified: DevOps Engineer Expert
- Azure certifications are a plus
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:January 30, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
