Senior Software Engineer (Onsite)

Job ID: 01856780Posted: Posted 30+ Days AgoStart Date: 2026-08-05Location: US-CO-AURORA-S76 ~ 16430 E Hughes Dr ~ BLDG S76Country: United States of AmericaTime Type: Full timeDate Posted:2026-08-05 Country:United States of America Location:US-CO-AURORA-S76 ~ 16430 E Hughes Dr ~ BLDG S76 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: TS/SCI - Current Security Clearance Status: Active and existing security clearance required on day 1Raytheon Company, Managed By Collins Aerospace.Position contingent upon contract awardCollins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market. Collins is seeking Engineers to be part of an engineering team for the AF DCGS High Band Mission Applications Software (HBMAS) Sustainment and Development program. Under this effort, RTX Collins personnel will oversee/perform software development and sustainment for cloud-enabled systems that ingest, tag, and audit data sets, while maintaining security, integrity, and availability of data.  The team, working with our customers and users, will focus on developing and fielding operationally relevant system capabilities in the most effective and efficient manner.  The team will apply best practices across the engineering continuum, with a focus on improved software quality and process efficiency.  This candidate must have an active TS/SCI security clearance. Travel to customer CONUS & OCONUS sites as required, but no more than 25%. This position is an onsite role in Aurora, CO and is contingent on contract award.What You Will Do​Design, develop, test, deliver, and maintain software for cutting-edge defense systemsWork with talented teams of engineers, architects, and leaders in an Agile environment.What You Will Learn​A breadth of advanced software technologies and techniques including multi-tiered architectures, AWS web services, and microservice software design.Modern DevSecOps and Continuous Integration/Continuous Delivery techniques.Software lifecycle practices for large-scale defense projects.Qualifications You Must Have Experience developing object-oriented software using Java and other Object-Oriented languagesActive and transferable Top Secret U.S. government issued security clearance with SCI eligibility is required prior to start date. 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​Experience with Agile developmentExposure to cloud platforms (AWS, Azure, or similar) and managed service integrationWhat 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. ​May be eligible for relocation assistanceAnd more!  ​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 critical part to play in ensuring our customers succeed today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. ​*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 possibilities. 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. Employee Referral Eligible#MISENGAs 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