New

Senior Software Engineer

Modern Technology Solutions, Inc.
401(k)
United States, Virginia, Chantilly
Feb 12, 2026
Modern Technology Solutions, Inc. (MTSI) is seeking an experienced Senior Software Engineer with experience in backend and database technologies to join our team in Chantilly, VA. We are a small, but highly empowered team where every team member is directly responsible for the success of our mission. In your role, you will be responsible for designing, implementing, and maintaining the backend data services of a project using an agile development model. Key Responsibilities: * Design, implement, and maintain data ingestion and ETL pipelines. * Analyze new data sources and integrate them into our data pipeline. * Collaborate with other engineers to ensure successful integration of data infrastructure with existing systems. Required Qualifications: * Bachelor's degree in computer science, data science, engineering, math, statistics, or related field. * Minimum of 7 years of experience in software engineering and data engineering. * Proficiency in at least one or more high-level programming languages (e.g., Java, Python, C/C++). * Experience working with Linux-based servers and systems. * Experience with at least one modern database (e.g., PostgreSQL) * Ability to work both independently and in a collaborative team environment. * Excellent verbal and written communication skills. Desired Qualifications: Active TS/SCI. Experience with Azure cloud services. * Experience with containerizing applications using Docker and deploying them to a container orchestration platform (e.g., Kubernetes). * Experience with PostgreSQL. * Experience with monitoring, logging, and dashboard tools (e.g., Prometheus, Grafana, Elasticsearch, Kibana). * Experience with CI/CD tools (e.g., Helm, Harbor, ArgoCD, Jenkins). * Experience with Agile methodologies. Desired Certification: * Current certification compliant with DoD 8570 IAT level 3 (CompTIA Security+) Required Clearance: * U.S. Citizenship is required for this position #LI-AC1 #LI-Onsite Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security. Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 100% Employee Owned: We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year. Great Benefits - Most Full-Time Staff Are Eligible for: Starting PTO accrual of 20 days PTO/year + 10 holidays/year Flexible schedules 6% 401k match with immediate vesting up to $9k annually Semi-annual bonus eligibility (July and December) Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account Up to $10,000 in annual educational reimbursement Other company funded benefits, like life and disability insurance Optional zero deductible Blue Cross/Blue Shield health insurance plan Track Record of Success: We have grown every year since our founding in 1993. Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide. For more information about MTSI, please visit www.mtsi-va.com MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.