Principal Embedded Software Test Lead Engineer (Onsite)

Principal Embedded Software Test Lead – Onsite role, U.S. Citizen required, Secret clearance (active). Location: Richardson, TX. Date posted: 2026-05-26. Responsibilities Develop software test plans, procedures, and standards in line with program requirements. Conduct performance, stress, regression, and fault tolerance testing for embedded applications. Define and own the overall software verification strategy for embedded systems. Assess risks and determine test coverage to ensure system safety, performance, and compliance. Lead software verification and qualification efforts in alignment with rigorous program and contractual requirements. Lead integration and validation efforts across complex embedded systems, ensuring functionality, stability, and compliance throughout all development phases. Assign and track tasks for the software test team, ensuring on-time delivery aligned with program schedule. Serve as technical authority on embedded software methodologies, tools, and frameworks. Provide guidance to software test engineers. Mentor and coach early-career and mid-level engineers. Coordinate with cross-functional teams, including systems, hardware, quality, and program management, to ensure cohesive execution and timely issue resolution. Design and implement automated test scripts. Perform debugging and root cause analysis. Lead audits and certification reviews. Act as primary liaison between the software test team and higher-level program leadership. Present test readiness reviews, verification status, and risk assessments to leadership, customers, and certification bodies. Learning Opportunities Knowledge within the Strategic Nuclear Deterrence domain. Applying fault injection, robustness testing, and stress testing in safety and mission-critical systems. Implementation of independence in testing (IV&V) for Design Assurance Levels. Mastery of DO-178C and other defense software assurance standards. Developing automation frameworks integrated with secure CI/CD pipelines in restricted environments. Critical thinking under high-stakes environments. Qualifications Experience with real-time operating systems (RTOS), including development, debugging, and performance optimization of embedded software applications. Experience leading, designing, and executing end-to-end test campaigns, including integration, system-level, and formal qualification testing. Experience supporting aerospace, defense, or nuclear command-and-control systems governed by standards such as DO-178C, MIL-STD-498, or equivalent. Previous professional experience with structured development lifecycles, test methodologies, requirements analysis, and change/configuration management in compliance-driven environments. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an advanced degree and minimum 5 years of experience. Active and transferable Secret U.S. government issued security clearance is required prior to start date. Preferred Qualifications Exposure to Earned Value Management (EVM) and understanding of how test progress integrates into broader program performance metrics. Background in hardware-software integration, hardware-in-the-loop (HIL) testing, or working within real-time embedded environments. Familiarity with test automation frameworks, test management suites, defect tracking tools, and requirements management platforms. Foundational understanding of Model-Based Systems Engineering (MBSE) practices and tools, including exposure to architecture models and interface control documents. Benefits Medical, dental, and vision insurance. Three weeks of vacation for newly hired employees. Generous 401(k) plan, with employer matching and separate retirement contribution, including a Lifetime Income Strategy option. Tuition reimbursement program. Student loan repayment program. Life insurance and disability coverage. Optional coverage (pet, home and auto, additional life, accident, critical illness, group legal, ID theft protection). Birth, adoption, parental leave benefits. Ovia Health, fertility, and family planning. Adoption Assistance. Autism Benefit. Employee Assistance Plan including up to 10 free counseling sessions. Healthy You Incentives, wellness rewards program. Doctor on Demand, virtual doctor visits. Bright Horizons, child and elder care services. Teladoc Medical Experts, second opinion program. Relocation assistance. Salary USD 107,500 – 204,500 per year. Equal Employment Opportunity RTX 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, age, disability, or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified individuals with a disability and protected veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. #J-18808-Ljbffr