Sr Software Engineer - Tactical Communications (Onsite)

Date Posted: 2026-09-01 Country: United States of America Location: US-IA-CEDAR RAPIDS-137 ~ 855 35Th St NE ~ BLDG 137 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense. At Collins Aerospace, we don’t just build technology—we engineer mission success. Our Resilient Connectivity Products software teams are on the front lines of innovation, designing and delivering cutting-edge embedded communication solutions that keep military forces around the world safe, connected, and informed—no matter the environment. We’re looking for a Senior Software Engineer who’s ready to make an impact. In this role, you won’t just write code, you’ll help shape the future of secure communications. From software-defined radios and advanced networking to state-of-the-art cryptographic systems, your work will drive critical real-time communications that enable pilots and soldiers to securely share voice, video, and data when it matters most. Here, you’ll collaborate with top-tier engineers and industry experts, leveraging advanced technologies to push the boundaries of what’s possible. Whether you're building trusted systems or breaking ground on new innovations, your contributions will directly support mission-critical operations across the globe. If you're passionate about solving complex challenges, excited by the idea of working on systems that truly matter and driven to grow alongside some of the brightest minds in the field—we want you on our team. Join Collins Aerospace Mission Systems and help us connect the battlespace of tomorrow! What You Will Do YOU will design and develop cutting-edge embedded software, networking and communication products in C/C++ and Rust YOU will drive project success by directly contributing to requirements, implementation, test development, and certification YOU will lead initiatives and small teams YOU will guide your team: supporting cost, schedule and technical performance What You Will Learn YOU will gain technical leadership experience and mentorship opportunities to develop talent for yourself and your peers YOU will collaborate with experts in the software discipline, obtaining hands-on experience with new and innovative technologies  YOU will engage with a multidisciplinary team to develop a cross-functional skillset YOU will become a subject matter expert on your projects and programs  Qualifications You Must Have YOU will become a subject matter expert on your projects and programs  U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Experience in the full software development lifecycle  Experience with embedded software development Experience in Python and C/C++ Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience Qualifications We Prefer Active U.S. Department of Defense Clearance Experience with Linux development environments Experience with Git or other version control systems  Experience with networking and communications protocols Experience with Rust programming language Experience with multithreading and containerization Comfortable working in Agile/Scrum environments  What We Offer: 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   And more!   Relocation Eligibility Eligible for relocation Learn More & Apply Now! Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critic