Principal Software Engineer

Position Title: Principal Software Engineer Location: Remote with travel to customer sites Clearance Requirement: Top Secret/SCI required Employment Type: Full-Time Research Innovations, Inc. (RII) is breaking through the big, slow, status quo with transformative technology that fundamentally changes and improves the world. We develop cutting-edge software for all levels of the government and military. Using agile development practices and user-centered design, we create innovative software solutions for complex real-world problems. We are looking for a committed Principal Software Engineer to join the MAX Electromagnetic Warfare (EW) product team within our Tactical Command & Control line of business. You will help build the EW and spectrum operations capabilities of the MAX platform — modeling complex electromagnetic environments, integrating physics-based propagation models, and turning messy real-world data into workflows warfighters actually use. Get s#it done. This position requires an active US Top Secret/SCI clearance. WHAT YOU WILL BE DOING Design and develop EW and electromagnetic spectrum operations capabilities for the MAX platform, from data model to user-facing workflow Model complex operational domains in code: design schemas and data models that unify disparate, messy data sources into coherent, trustworthy representations Integrate and validate physics-based RF propagation models, terrain and clutter data, and third-party services via APIs Build and maintain integrations with external C2 systems, sensor feeds, and telemetry sources Develop with modern AI-assisted and agentic coding workflows: shape the problem, author and review detailed implementation plans, direct AI coding agents, and own the quality and correctness of what ships Collaborate through plan reviews and merge requests in a highly collaborative, no-egos team culture Demo working software to customers, translate their feedback into priorities, and iterate quickly Support deployment of the product across cloud, on-premises, and edge/DDIL environments Contribute to software design and test documentation, and mentor teammates in your areas of depth Continuously challenge yourself to become a better software developer WHAT YOU HAVE DONE BS degree in a related technical field and 5+ years of relevant professional experience (an advanced technical degree may substitute for a portion of the experience) Modeled complex real-world domains in software: schema and data model design, entity resolution across disparate sources, and API-based data integration Professional experience in Python, C#, Java, or similar languages, and with SQL-based persistence solutions Experience integrating data from third-party applications and services via REST APIs Hands-on experience with AI-assisted or agentic software development, including reviewing and verifying AI-generated work Disciplined testing practices: unit testing, test-driven development, and validation of your own work Experience working in containers (Docker) and familiarity with Kubernetes-based deployment Experience demoing software to customers and translating user needs into technical requirements Ability to multitask, self-assign work, and function in a dynamic, fast-paced development environment Experience mentoring other developers Excellent verbal and written skills EVEN BETTER Experience with electromagnetic spectrum operations: spectrum management, RF propagation modeling, link analysis, or EW planning workflows Experience supporting DoD customers, including on-site engagement with program offices or operational units Familiarity with terrain, elevation, and land cover data sources (DTED, GMTED, LiDAR-derived datasets) Experience with data across classification levels, cross-domain solutions, and build-low/ship-high development Experience with Tactical Assault Kit (TAK) or integrating with platforms such as Palantir via OSDK/APIs Experience with edge and DDIL deployment environments #LI-TC1 At RII, we believe that diversity in our workforce is critical to our success. We strive to hire great people from a wide variety of backgrounds, not just because it’s the right thing to do, but because it makes us stronger. We work to help your intellectual passions and creativity thrive. It’s one of our core values: Let your geek flag fly. We also offer all employees comprehensive benefits including: flexible work schedules, health insurance coverage, paid time off, 401k with a company match, paid parental leave, access to wellness programs and much more. You get this all from day one, and all paid for by RII. It’s all part of another of our core values: Stay human. It’s why our comfortable and colorful offices such as our headquarters, include a community game room, pantry, massage chair, and an escape room, among other amenities. It’s why we have community ambassadors and regular community events. Research Innovations Incorporated is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other characteristic protected by applicable law.