> Markdown version of [/jobs/ext/2721944-sr-principal-systems-engineer-stars-architecture-modernization-onsite](https://www.wearedevelopers.com/jobs/ext/2721944-sr-principal-systems-engineer-stars-architecture-modernization-onsite). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Principal Systems Engineer - STARS Architecture Modernization (Onsite) - **Company:** RTX - **Location:** Marlborough, MA, United States - **Experience:** Expert - **Salary:** $132,400.0 - $251,600.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, Computer Engineering, Distributed Systems, Enterprise Architecture Framework, Design of User Interfaces, Software Engineering, Software Requirements Analysis, Systems Modeling Language, Systems Architecture, Toolchain, DODAF - **Published:** September 4, 2026 - **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-MA-MARLBOROUGH-MA3--1001-Boston-Post-Rd--BLDG-3/Sr-Principal-Systems-Engineer---STARS-Architecture-Modernization--Onsite-_01872064 ## About the Role 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., * 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., * 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). ## Description 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. ## Related Videos - [Model Based Systems Engineering in an Agile Product Development Process](https://www.wearedevelopers.com/videos/68-model-based-systems-engineering-in-an-agile-product-development-process) - [Speeding up Web Apps performance with WebAssembly and Emscripten](https://www.wearedevelopers.com/videos/1985-speeding-up-web-apps-performance-with-webassembly-and-emscripten) - [Crew Management System for Airlines: Plan duties for pilots & flight attendants worldwide](https://www.wearedevelopers.com/videos/1444-crew-management-system-for-airlines-plan-duties-for-pilots-flight-attendants-worldwide) - [Robots are coming into the wild! 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