New

HYBRID Software Engineer

KeyLogic Systems
United States, Tennessee, Oak Ridge
Apr 07, 2026
Title: Software Engineer Location: HYBRID Oak Ridge, TN. Y12 National Security Complex (Combination of On- and Off-Site Work) Contract Duration: 10 months (with 1 option year) About the Role KeyLogic is seeking an experienced Software Engineer to support application development efforts at the Y12 National Security Complex. This role will work in a hybrid environment, combining onsite collaboration and telework, and will operate within an Agile development framework delivering missioncritical software solutions. Responsibilities Collaborate with customers and stakeholders to gather and refine system requirements Lead and contribute to system engineering and software design activities Develop webbased applications using ASP.NET, C#, HTML5, and related technologies Design and document system architectures, including High Level Design and System Design Documents Integrate databases and APIs across multiple platforms Participate in Agile development ceremonies and iterative development cycles Execute software quality assurance and testing in accordance with approved test plans Modify and enhance applications based on testing results and customer feedback Support functionality testing and validation with responsible managers Prepare and deliver weekly status reports detailing progress and completed deliverables Produce and maintain all required technical documentation for system operations and maintenance Qualifications & Responsibilities Education & Experience Qualified candidates must meet one of the following education and experience requirements: PhD in a technical field with relevant professional experience, or Master's degree in a technical field with 2 or more years of related experience, or Bachelor's degree in a technical field with 5 or more years of related experience, or Associate's degree in a technical field with 10 or more years of related experience Candidates must demonstrate indepth knowledge and handson technical expertise in software engineering, including experience supporting complex and enterpriselevel systems. The ability to work independently while contributing to system design, development, and documentation is required. Strong collaboration skills are essential, including participation in/or leadership of technical design discussions. Seniorlevel candidates should have experience acting as a technical subject matter expert, influencing solution architecture and design decisions. Required Knowledge, Skills, and Abilities Proven experience with customer requirements gathering Strong background in system engineering and application design Handson experience with: ASP.NET and C# HTML5 web development Database interaction with webbased applications API integrations across multiple platforms User Interface (UI) design Familiarity with Agile development methodologies Experience reading and integrating authentication or identification devices (e.g., badges, tags) Experience working with ServiceNow APIs and web interfaces Deliverables Develop and maintain requirements, design, and system architecture documentation Produce highlevel and system design documents and obtain appropriate approvals Design, develop, test, and modify applications in accordance with approved test plans Perform software quality assurance activities and documentation Execute iterative development and functionality testing with stakeholders Produce weekly status reports outlining work progress and completed deliverables Deliver productionready code, along with all supporting documentation Provide complete maintenance, operations, and system documentation About KeyLogic: Supporting critical missions at the intersection of data and science, KeyLogic provides mission management, systems analysis, data analytics, digital transformation, and cybersecurity to customers in the energy, federal civilian, and defense sectors, with a 20+ year portfolio of successes supporting DOE, DOC, EPA, DOD, DHS, FBI, and other federal agencies challenged with complex missions. We help our customers solve the world's most challenging problems with unsurpassed anticipatory service. KeyLogic employs over 400 team members, including systems designers, developers, data scientists, IT and cybersecurity specialists, engineers, mission experts, program managers, and more than 70 Ph.D. scientists. This multidisciplinary team works together solving challenging problems with anticipatory service-always staying one step ahead-benefiting our customers, and ultimately helping build a better world. We are committed to the success of each customer's mission. We care enough to make their mission our mission and their success our success. We take technical service delivery to a level above our peers. Our anticipatory service is best-in-class. KeyLogic is an Equal Opportunity/Equal Access Employer. KeyLogic is committed to a policy of non-discrimination against individuals on the basis of any legally protected status. If you need a reasonable accommodation for any part of the employment process, please contact us by email at Recruiting@KeyLogic.com and let us know the nature of your request and your contact information. Request for accommodation will be considered on a case-by-case basis. Job Code: 2718