Senior Software Engineer with Security Clearance

Title: Senior Software Engineer Duration: Full-time Location: On-site St. Louis, Missouri Required Clearance: Active Top Secret/SCI Clearance DLS Engineering is seeking a Senior Software Engineer for a full-time position in St. Louis, Missouri. This is an on-site position. This role requires strong full-stack Python experience, with a focus on API development, Kubernetes deployment, and modern DevOps practices to accelerate delivery. The Senior Software Engineer will work with an existing code base learning it quickly, manipulating it for adjacent use cases, and implementing new features that advance mission capabilities. A background in geospatial systems, imagery acquisition, and geometry is a significant plus. Why this role is a great next step for your career: This position supports an exciting modernization initiative providing enterprise architectural, engineering, operations and sustainment, modification, and testing of geospatial-intelligence core services. This utilizes secure cloud environments, and a modern agile development methodology making data accessible, discoverable, and deliverable. St. Louis offers a low cost of living, vibrant cultural scene, and abundance of free attractions and outdoor spaces. It offers a mix of big-city amenities and smaller-town charm, with unique neighborhoods, diverse food options, professional sports teams, and a growing technology sector. A day in the life: - Create, maintain and/or improve the software code, with duties to design and update software databases - Technical delivery across many areas of software development including: assessments and evaluations, designing and engineering, agile development, Continuous Integration (CI)/Continuous Delivery (CD)/pipeline configuration and utilization, application development, front end development, server side development, API development, testing, security and accreditation, system integration, operations and sustainment, and documentation/template development and maintenance. When I read the below it sounds like me: - Active Top Secret/SCI Clearance Required Knowledge: - Possesses senior knowledge and senior hands-on experience in developing, implementing and leading software programs. - Astute ability in writing test scripts, and test-driven development in an agile software development environment, where built-in automated test procedures are paramount and continuous integration of software and continuous delivery of software. Required Education: - Master’s degree in Computer Science, Engineering, Mathematics, or a related technical field with 8 years of software engineering experience - OR Bachelor’s degree in a similar field with 10 years of software engineering experience. - OR 12 years of software engineering experience Required Experience: - Full-stack Python development - Building and maintaining APIs (ex. FastAPI) - Kubernetes and DevOps practices to support rapid deployment and sustainment - Proven ability to work with pre-existing code bases, understand them quickly, and adapt functionality for new use cases. - Web services architecture, design, and development. - Working in secure cloud environments (e.g., AWS GovCloud, C2S) About DLS Engineering: DLS is an engineering firm with 30 years of Federal Government contracting experience. Our small business efficiencies coupled with a commitment to excellence allow us to provide reliable solutions with integrity for our nation's most critical defense and national security priorities. Other information: - We offer a competitive salary and a 401k program with company match. - We offer a comprehensive benefits package including health, vision, dental, life, and disability insurance. - We offer a generous paid time off package. - If accommodation is needed with the application and / or the interview process for applicants with disabilities, please contact Human Resources at 757-494-5151. - DLS is an E-Verify company. - DLS is an equal employment opportunity employer. Qualified applicants will receive consideration without regard to age, race, religion, sex (pregnancy, sexual orientation, gender identity), national origin, or disability. We encourage all qualified applicants to apply. If you believe you have been discriminated against, please contact Barbara Ellison. You also have the right to file a charge of discrimination with the equal employment opportunity commission. - Must be able pass a government background check, which will be completed before employment.

Location: Saint Louis, Missouri, US

Posted Date: 11/17/2025