Senior Systems Engineer (onsite)

Position Overview We are seeking an experienced Senior System Engineer to work onsite in St.Petersburg, FL. The role requires an active U.S. Secret security clearance and U.S. citizenship. What You Will Do The Senior Systems Engineer within the Systems Excellence Department contributes through all phases of the product development lifecycle (systems and software requirements, system architecture and design, software integration and test, simulation and test, integration and test, verification and sell‑off) within an interdisciplinary process that ensures the customer and warfighter needs are satisfied. Responsibilities include: Lead and support requirements development, system‑level designs, and system‑level models using Model‑Based Systems Engineering (MBSE) principles. Develop and manage testable requirements and associated verification approaches, ensuring traceability through the entire engineering lifecycle. Perform system architecture development, subsystem design, and detailed component/system analysis to ensure alignment with customer needs and technical performance. Execute integration and test activities in‑house or at site locations, including hardware/software integration, troubleshooting, and operational testing. Develop and execute robust verification and validation plans, including automated test execution and data analysis using tools like Python, MATLAB, and other scripting languages. Apply systems and software modeling and simulation tools to support design trade‑offs, performance analysis, and risk mitigation. Utilize DOORS to manage the complete life cycle of requirements, including Engineering Change Proposals (ECPs), Change Notices (CNs), and traceability to tests and verification results. Attend and contribute to internal and external Configuration Control Boards (CCBs) to ensure effective configuration management. Collaborate with Program and Customer Leadership, as well as cross‑functional teams, to define and achieve program objectives. Drive innovative approaches to problem‑solving, including the use of DevSecOps pipelines, Agile methodologies, and model‑based approaches for design and test. Qualifications You Must Have Proven experience in the full system lifecycle, including requirements development, system design, integration, verification, and validation. Hands‑on experience in the operation, test, and troubleshooting of software on target hardware and/or complex military systems. Experience with Agile development, including project estimating, reporting, and backlog management. Proficiency in using requirements management tools, such as DOORS, for linking requirements to design, test, and verification artifacts. Experience with MBSE tools such as Rhapsody, Cameo, or MagicDraw for system modeling and simulation. Strong data analysis skills, including interpretation of results, identification of corrective actions, and monitoring of Key Performance Indicators (KPIs) or Technical Performance Measures (TPMs). Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5years of relevant experience, or an Advanced Degree in a related field with a minimum of 3years of experience. Active and transferable U.S. government‑issued Secret security clearance required prior to start date. Qualifications We Prefer Experience in the operation, integration, and troubleshooting of naval systems or other complex defense systems. Demonstrated ability to develop and execute integration, verification, and validation planning documentation, including test plans, procedures, and reports. Proficiency in programming (e.g., C/C++, Python) and familiarity with Linux operating systems, DevSecOps pipelines, and Test‑Driven Development (TDD) or Behavior‑Driven Development (BDD) methodologies. Experience with automated test scripting and automated data analysis to streamline verification and validation processes. What We Offer Sign‑on Bonus Eligible Medical, dental, and vision insurance Three weeks of vacation for newly hired employees Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option Tuition reimbursement program Student Loan Repayment Program Life insurance and disability coverage Optional coverages you can buy (pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, 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 may be provided And more! Equal Opportunity Employer 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 Section503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. #J-18808-Ljbffr