Remote Net Core Developer Jobs in Ashburn, VA (NOW HIRING)

Our capabilities in cybersecurity, network architecture, reverse engineering, software and hardware development uniquely enable us to support sensitive missions for the U.S. military and federal agency partners. Meet HII’s Mission Technologies Division Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe.

Mission Technologies is leading the next evolution of national defense – the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that’s right for you.

Apply today. We look forward to meeting you. To learn more about Mission Technologies, click here for a short video: https://vimeo.com/732533072 Job Description Join the growing Warfare Systems Business Group at HII-Mission Technologies!

We are seeking a mid-level .Net Core Developer (Software Engineer 3) to support the Defense Security Cooperation Agency (DSCA), Office of the CIO. In this role, you will design, develop, and maintain robust, scalable web applications and backend services using .NET Core/C# technologies. You will contribute to modernizing enterprise systems, integrating with data platforms, and implementing automation solutions to enhance efficiency, transparency, and mission effectiveness in security cooperation operations.

Familiarity with Robotic Process Automation (RPA) using UiPath is highly preferred. Essential Job Responsibilities Designs, develops, documents, tests and debugs applications software and systems that contain logical and mathematical solutions. Conducts multidisciplinary research and collaborates with equipment designers and/or hardware engineers in the planning, design, development, and utilization of electronic data processing systems for product and commercial software.

Determines computer user needs; analyzes system capabilities to resolve problems on program intent, output requirements, input data acquisition, programming techniques and controls; prepares operating instructions; designs and develops compilers and assemblers, utility programs, and operating systems. Ensures software standards are met. Develop, test, and maintain high-quality backend applications and RESTful APIs using .NET Core / .NET 6+, C#, Entity Framework Core, and related technologies.

Build responsive and secure web applications, microservices, and integration layers that support enterprise data flows and mission-critical systems. Design and implement clean, maintainable code following SOLID principles, dependency injection, and modern architectural patterns (e.g., Clean Architecture or CQRS). Collaborate with cross-functional teams (frontend developers, data architects, product owners, and stakeholders) to translate business requirements into technical solutions.

Integrate .NET Core applications with UiPath Robotic Process Automation (RPA) solutions to automate repetitive business processes, improve efficiency, and reduce manual workloads. Develop and maintain automation workflows, reusable components, and integration points between .NET systems and UiPath Orchestrator. Perform unit testing, integration testing, and support QA activities to ensure high code quality and system reliability.

Troubleshoot, debug, and resolve application issues; provide ongoing support and enhancements for deployed solutions. Participate in Agile ceremonies (sprints, PI planning, code reviews) and contribute to DevSecOps practices in a collaborative team environment. Performs additional duties as assigned or required to advance mission goals.

Minimum Qualifications Strong proficiency in C#, .NET Core / .NET 6+, ASP.NET Core, and RESTful API development. Experience with relational databases (SQL Server), Entity Framework Core, and ORM concepts. Solid understanding of software development best practices, version control (Git), and CI/CD pipelines.

Experience with the agile software lifecycle. Ability to work independently while thriving in collaborative team settings. Self-motivated initiator with strong problem-solving skills and a proactive approach.

Clearance: Must possess and maintain an active Secret clearance. Remote-eligible position; must align with Eastern Time Zone core business hours, 0900-1500ET, where you are active, online, and available. Software Engineer II 2 years relevant experience with Bachelors in related field; 0 years experience with Masters in related field; or High School Diploma or equivalent and 6 years relevant experience.

Software Engineer III 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD in related field; or High School Diploma or equivalent and 9 years relevant experience. Software Engineer IV 9 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; 4 years relevant experience with PhD in related field; or High School Diploma or equivalent and 13 years relevant experience. Preferred Requirements Hands-on experience with UiPath for Robotic Process Automation (RPA), including workflow development, Orchestrator integration, and .NET custom activities.

Familiarity with modern frontend technologies (React, Angular, or Blazor) for full-stack contributions. Experience with cloud platforms (Azure Government or AWS GovCloud), containerization (Docker), and orchestration (Kubernetes). Knowledge of secure coding practices, authentication/authorization (OAuth, OpenID Connect), and DoD compliance requirements (RMF, FedRAMP).

Experience working in DoD or federal government environments, particularly supporting security cooperation or financial management systems. UiPath certifications (e.g., UiPath Automation Developer Associate or Professional) are a strong plus. Experience in SAFe Agile environments, including participation in PI planning, Scrum/Kanban ceremonies, and DevSecOps practices.

Physical Requirements Ability to remain in a stationary position for prolonged periods while working at a computer. Ability to operate a keyboard, mouse, and standard office equipment to perform analytical tasks. Must be able to effectively communicate in virtual meetings, briefings, and secure collaboration environments.

Ability to review, analyze, and interpret digital data for extended periods with attention to detail and accuracy. Occasional light lifting of documents or equipment up to 10 lbs, if needed for home-office setup. Must maintain a home work environment that meets company and government security requirements (e.g., controlled space for handling sensitive or FOUO information, if applicable).

Must be able to work assigned East Coast core business hours to support program and customer requirements. This is a full‑time remote role. Team members are expected to be online, available, and responsive during their scheduled work hours to support collaboration and customer needs.

To be successful in this remote position, employees should: Have a reliable, high‑speed internet connection and a secure, distraction‑free workspace. Stay connected through company communication tools and respond in a timely manner. Attend required virtual meetings, trainings, and check-ins.

Communicate proactively about workload, availability, or schedule changes. Remote employees are expected to maintain the same professionalism, productivity, and engagement as on‑site team members. HII is more than a job - it’s an opportunity to build a new future.

We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application. Why HII We build the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber.

Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals. Recognized as one of America’s top large company employers, we are a values and ethics driven organization that puts people’s safety and well-being first. Regardless of your role or where you serve, at HII, you’ll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career.

Together we are working to ensure a future where everyone can be free and thrive. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law. Do You Need Assistance?

If you need a reasonable accommodation for any part of the employment process, please send an e-mail to buildyourcareer@hii-co.com and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case-by-case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address.

Additionally, you may also call 1-844-849-8463 for assistance. Press #3 for HII Mission Technologies.