Software Engineer, Full Stack Developer, .NET Developer

Overview

The Mission Applications Group at Oak Ridge National Laboratory is seeking a mid‑level Software Engineer to join our team. This role involves developing and maintaining web and/or desktop applications using a Microsoft technology stack and contributing to projects that impact areas such as nuclear energy, space exploration, and global security.

• Develop and maintain web and/or desktop applications, primarily using a Microsoft technology stack.
• Lead and collaborate on efforts to analyze and understand complex requirements.
• Work effectively as part of a team and independently.
• Build productive working relationships with individuals and organizations.
• Communicate clearly and effectively with technical and non‑technical stakeholders.
• Exercise creative and analytical thinking with diverse multidisciplinary groups.

• BS degree in computer programming or related field and at least seven years of relevant experience, or an equivalent combination of education and experience.
• Experience with full‑stack development.
• In‑depth understanding of software development and the ability to write performant, maintainable code, primarily in the OOP paradigm.
• Excellent verbal and written communication skills.
• Proficiency with application lifecycle management tools (preferably Git and Azure Dev Ops).

Experience with:

• C# (strongly preferred)
• Front‑end web application frameworks, preferably React and/or Blazor (strongly preferred)
• SQL Server and T‑SQL (strongly preferred)
• Web Services
• Windows desktop and mobile application development
• AI coding assistants and plug‑ins
• Incorporating LLMs in custom software solutions
• Custom software‑to‑device communications
• Cloud‑based infrastructure (particularly with Microsoft Azure)
• Power BI
• Agile methodology practices

• This position requires the ability to obtain and maintain a clearance from the Department of Energy.
• As a Workplace Substance Abuse Policy (WSAP) testing designated position, it requires passing a pre‑placement drug test and participation in an ongoing random drug testing program.

ORNL offers competitive pay and benefits programs, including medical and retirement plans, flexible work hours, on‑site fitness, banking, and cafeteria facilities. Additional benefits include a Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT‑Battelle is an E‑Verify employer.