Sr. Principal Systems Engineer - STARS Architecture Modernization (Onsite)

Date Posted: 2026-09-03 Country: United States of America Location: US-MA-MARLBOROUGH-MA3 ~ 1001 Boston Post Rd ~ BLDG 3 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract. Security Clearance Type: None/Not Required Security Clearance Status: Not Required We are seeking an experienced Senior Principal Systems Engineer to lead the definition, design, and development of a next-generation architecture for the STARS (Standard Terminal Automation Replacement System) platform. The ideal candidate will bring deep systems engineering expertise, demonstrated leadership in large-scale system architecture modernization, and advanced proficiency with Cameo Systems Modeler and model-based systems engineering (MBSE) methodologies. This role will serve as the technical architect responsible for shaping the system's long-term architectural vision, ensuring alignment with program goals, safety requirements, and future scalability needs. The candidate will collaborate closely with cross-functional engineering teams, program leadership, and external stakeholders to drive a cohesive, sustainable architectural baseline. What You Will Do: Lead the architecture development effort for the next-generation STARS system, including conceptual architecture, logical and physical architectures, and interface definitions. Develop and maintain high-quality MBSE models using Cameo to represent system behavior, structure, interfaces, constraints, and verification pathways. Perform architecture trade studies and define technical roadmaps to guide modernization efforts. Collaborate with systems engineering, software engineering, hardware engineering, integration/test, and program management to ensure architectural alignment and feasibility. Establish and enforce architectural and modeling standards, patterns, and best practices. Support requirements decomposition and allocation using MBSE techniques to ensure traceability and consistency across system artifacts. Present architectural concepts, analyses, and decision rationales to internal and external stakeholders, including leadership and customers. Mentor junior engineers in MBSE methodologies, Cameo usage, and system architecture principles. Ensure all architectural work complies with safety, regulatory, and certification requirements relevant to NAS systems. Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience 10+ years of experience in complex system architecture, systems engineering, or equivalent roles. Proven experience developing architectures for safety-critical, mission-critical, or large-scale distributed systems. Expert-level proficiency with Cameo Systems Modeler, SysML, and MBSE processes. Strong knowledge of system requirements, interface design, integration, and verification strategies. Demonstrated ability to lead architectural efforts from concept through implementation. Excellent communication, presentation, and technical leadership skills. Qualifications We Prefer: Experience with FAA systems, ATC/ATM domain, or other highly regulated environments. Familiarity with STARS or related NAS infrastructure. Experience with digital engineering pipelines, model governance, or toolchain integration. Knowledge of enterprise architecture frameworks (DoDAF, UAF). What We Offer : Some of our competitive benefits package includes:? 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 Carrot 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 ?And more!? Please ensure the role type (defined below) is appropriate for your needs before applying to this role: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form - with our customers and with each other -- propel us all higher, again and again. Apply now and be part of the team that's redefining aerospace, every day. As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. The salary range for this role is 132,400 USD - 251,600 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company's performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. 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. Privacy Policy and Terms: Click on this link ( to read the Policy and Terms Raytheon Technologies is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class. RTX