Senior Mission / Systems Engineer (ONSITE)

Location: US-CA-ANAHEIM-406 ~ 160 N Riverview Dr ~ BLDG 406, Ste 150 Date Posted: 2026-03-17 Security Clearance: TS/SCI with Polygraph. Active and existing clearance required on day 1. Citizenship: U.S. citizenship required. Only U.S. citizens are eligible for a security clearance. Position Type: Onsite. This role is primarily on‑site, with flexibility at hiring manager discretion. Applied Signal Technology (AST) is seeking a Senior Mission / Systems Engineer who strives for excellence and has a passion to be part of a team that strengthens our nation and improves the security of our world. What You Will Do Work with experienced R&D members on system development and deployments for the protection of our country. Generate briefings and present material to team members, customers, and AST Management as necessary. Be an integral part of a team that makes decisions and generates ideas that push products above and beyond. Travel up to 25%. Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience. 5 years of practical experience in Systems Engineering including design, development and testing of custom hardware and software systems of high complexity. Experience interacting with development teams to resolve discrepancies and issues. Experience identifying, analyzing, and resolving problems in all phases of the system lifecycle. Experience with Systems Integration, test execution, and test results documentation. Experience with Linux and/or Linux variants. Experience problem solving and debugging. Experience recognizing areas of improvement or customer needs and relaying them to senior staff as business development possibilities. Experience working with customers, end users, hardware design teams, and software design teams. Ability to work weekends and nights periodically to support integration and testing efforts. Active and transferable Top Secret SCI (TS/SCI) security clearance with polygraph required prior to start date. U.S. citizenship required. Qualifications We Prefer Experience with Fiber Optics, RF or Telecommunications standards and processing techniques. Experience with Design, Development, Integration and Test of complex Communication systems. Experience developing high‑speed processing hardware or complex control software. Experience developing training courses and training others. Understanding of telecommunications systems concepts and signal processing fundamentals. Experience with scripting languages, such as Python or Bash. Experience in generating test scripts to automate integration. Experience formalizing, developing, and writing requirements, plans, and procedures based on customer discussions, briefings, interactions, and statements of work. Experience developing system level designs, high level control and data interfaces. Experience with bid and proposal activities related to system development. 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. Eligible for relocation. And More! The salary range for this role is 95,500 USD – 181,700 USD. The range is a good faith estimate representative of all experience levels. 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 on 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. 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. Learn More & Apply Now! For more information, visit Applied Signal Technology: WHO WE ARE. 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. Onsite Hiring Process As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend selected 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. Equal Opportunity Employer 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. #J-18808-Ljbffr Collins Aerospace