Senior Software Engineer - Algorithms Software (Onsite)

Date Posted: 2026-06-10 Country: United States of America Location: US-TX-PLANO-465 ~ 465 Independence Pkwy ~ INDEPENDENCE Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: Secret - Current Security Clearance Status: Active and existing security clearance required on day 1 At RTX, the world 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. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. The Software organization develops software applications, including integration and test on missiles, launchers, radars, naval systems, fire control and other complex systems. Our precision software and firmware integrate operating systems, device drivers, networking, and control software to bring together sensor, guidance, and flight control processing features to complete the mission. The Software org is made up of several Centers located across the country, responsible for all aspects of the software development lifecycle. Our 4000+ software engineers design, develop, and build innovative solutions for our customers. Join our fast-paced agile teams on the leading edge of technology. As an Algorithms Senior Software Engineer, your role will encompass a wide range of responsibilities – from implementing system-level architecture updates to optimizing low-level code to maximize performance efficiency. This position is for a Software Engineer who has professional experience in the development and implementation of algorithm software for both large-scale HPC environments and highly optimized and performant real-time applications. What You Will Do Work alongside scientists (physicists, mathematicians, signal processing experts, and more) to understand algorithm goals and limitations. Optimize software for performance, including parallel processing and leveraging GPUs and other processing accelerators. Utilize expertise in mathematics and physics to achieve optimal performance. Evolve algorithms originating in Python and MATLAB into optimized C, C++, and CUDA code. Model and test new algorithms in high-performance computing (HPC) environments. Scale processing implementations to run extensive tests and simulations using hundreds to thousands of processing cores. Architect, design, implement, test, and debug integrated real-time software within heterogenous systems. Work within a cross-discipline team to define, refine, and improve product concept, implementation, testability, and guaranteed, measurable quality. Contribute to proposals as well as preliminary and critical design reviews. Opportunity to travel for customer collaboration. Contributing to proposals as well as preliminary and critical design reviews. While in the process of obtaining DoD Top Secret clearance, you will utilize your Secret clearance to support meaningful unclassified and collateral tasks. This job is onsite in Plano, TX; applicants must be in the area or willing to relocate to it. Qualifications You Must Have Typically requires a Bachelor’s degree in Computer Science, Engineering or other STEM related field and a minimum of 5 years of relevant experience. Experience in developing, testing, and integrating real-time software applications written in C, C++ or closely related software languages. Development experience on Linux-based systems. Active and transferable Secret U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer Established background in mathematics and signal processing concepts. Ability to quickly understand and navigate complex systems and established code bases. Experience with product development utilizing the Scrum techniques of the Agile software development process. Hands-on experience with Git for version control and Gitlab/Jira for repository and issue management. Experience working with massively parallel code streams. Experience with optimized CUDA programming for Nvidia accelerators. Prior work in HPC environments. Experience with MATLAB, Python, and other analysis tools. Active and transferable U.S. government issued Top Secret security clearance. What We Offer Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Relocation Offered Based On Eligibility Learn More & Apply Now! Please consider the following role type definition as you apply for 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. Clearance Information: This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: Location Information: This position is onsite at our campus in beautiful Plano, TX. We Are RTX 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 86,800 USD - 165,200 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 RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.