Principal Systems Engineer

Salary: $106000 - 202000 per year Requirements: We require a STEM degree and at least 8 years of relevant professional experience. We require hands-on software application development experience using Python or a similar programming language. We require active and transferable U.S. government security clearance before the start date. We require U.S. citizenship, as only U.S. citizens are eligible to obtain a security clearance. We require the ability to obtain an interim U.S. government security clearance before the start date. We require experience working with IP networks and software engineering in a systems-focused environment. We prefer experience with Patriot or a comparable defense program covering design, development, integration, verification, and sustainment. We prefer experience with VoIP communications design, configuration, and integration, and IP networking certifications such as CCNA or CCNP are a plus. We prefer experience designing, configuring, and integrating cyber-secure communications solutions. We prefer experience deploying software on cyber-hardened Linux operating systems. We prefer experience creating automated tests for both hardware and software. We prefer strong technical leadership, collaboration, and problem-solving capabilities. Responsibilities: We perform hands-on development and testing in lab environments using communications hardware. We develop, validate, troubleshoot, and support communications systems and related products throughout the lifecycle. We design and refine IP communications network architectures to satisfy Patriot system requirements. We build configurations and device settings across a broad range of communications hardware. We create orchestration and automation solutions to streamline software management of communications systems and connected devices. We develop software in Python. We provide ongoing technical support for Patriot Communication Systems worldwide. We mentor new team members and help grow team knowledge. We provide technical direction to a small engineering team supporting communications software application development for Patriot programs. Technologies: Hardware Support Linux Network Python Security Flow More: We are RTX, the worlds largest aerospace and defense company, and through Meridian Softworks we bring more than 100 years of engineering expertise to help protect freedoms and deter aggression. Our Systems Engineering and Test Capabilities Directorate is the hub for mission systems integration, and our Land Warfare and Missile Defense Systems team is seeking a Principal Systems Engineer to help design and support world-class air and missile defense communications solutions. This onsite role is based in Andover, Massachusetts, and includes relocation assistance, competitive compensation, and a broad benefits package that may include medical, dental, vision, retirement matching, paid time off, parental leave, and more. We value Safety, Trust, Respect, Accountability, Collaboration, and Innovation, and we may ask candidates to complete selected interview steps in person as part of our secure hiring process. last updated 28 week of 2026