Senior Software Engineer - ATS (Onsite)

Date Posted:

2026-08-05



Country:

United States of America



Location:

US-CA-FULLERTON-676 ~ 1801 Hughes Dr ~ BLDG 676



Position Role Type:

Onsite



U.S. Citizen, U.S. Person, or Immigration Status Requirements:

U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.



Security Clearance Type:

None/Not Required



Security Clearance Status:

Not Required

Our Connected Aviation group has an exciting opportunity for a Senior Software Engineer to join our Air Traffic Systems (ATS) team. This is a chance to be part of an elite team of Software Engineers supporting the development and maintenance of the safety-of-life Wide-Area Augmentation System (WAAS) developed by the FAA for civil aviation. WAAS is the cornerstone of the FAA’s satellite navigation roadmap, transitioning from ground-based navigation to satellite-based navigation. As a Senior Software Engineer, you will play a crucial role in the design, development, integration, and verification of both operational and non-operational/test software. This position offers a unique opportunity to contribute to a critical system that enhances the safety and efficiency of aviation.

What You Will Do:

• You will perform and support software development to design, develop, and test software for processing, analyzing, and presenting high-capacity data collected from safety-critical, real-time, satellite-based systems.
• You will work with the software and leadership team to support cost and schedule objectives.
• You will support formal and informal software integration and test activities.
• You will support software qualification testing to meet DO-178B standards for requirements-based verification and robustness testing.
• You will update software process documentation and work instructions to meet DO-178B standards and company processes.
• You will update documentation related to test, verification, and design activities. - You will work with the software team and interface with other disciplines as needed to meet program milestones.
• You will support the collection and generation of software metrics for management and engineering reviews.
• You will lead and identify process improvement opportunities.
• You will support software process audits and engineering reviews.

What You Will Learn:

• You will gain expertise in designing and implementing innovative solutions to advance software tools to process large volumes of complex performance data collected from real-time safety-critical systems in satellite-based air traffic systems, impacting civil aviation domestically and internationally.
• You will acquire comprehensive knowledge of the product life cycle of safety-critical systems from initial design to deployment within a dynamic and innovative team environment.
• You will develop skills essential for shaping the future of aviation technology, contributing directly to advancements in civil aviation globally.

Qualifications You Must Have:

• 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
• Must have a minimum of 5 years of experience in the Software Engineering field, specifically in a UNIX/Linux-based environment, with expertise in C Programming, structured programming, and the full software development lifecycle.
• Must have prior experience in software testing, including Unit Test, Integration Test, and System Test, along with proficiency in source code debugging using various debuggers.
• Must have prior experience in source code configuration management systems such as ClearCase, ClearQuest, Jira, and BitBucket/Git.
• U.S. citizenship is required - Only U.S. citizens are authorized to access information under these programs/contracts.
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Qualifications We Prefer:

• Prior experience with C99 dialect of C, Python, SQL, Matlab, bash/ksh/Perl scripting.
• Prior experience with Red Hat Enterprise Linux (RHEL), especially kernel development.
• Prior WAAS Experience and/or familiarity with WAAS processes and procedures.
• Prior experience with web application development using HTML, CSS, JQuery, C#, PHP, Json, VBScript, JavaScript, Angular.
• Prior knowledge of safety critical software requirements/DO-178B standards.
• Prior experience with cyber security implementation.

What We Offer:

Some of our competitive benefits package includes: 

• Flexible work weeks: 9/80A, 5/40; Flexible work Hours:  Core hours, Modified time

• Medical, dental, and vision insurance

• Three weeks of PTO 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! 

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. 

Avionics delivers advanced cockpit displays, vision systems, and comprehensive digital solutions for global government, commercial and business aviation customers. We provide connectivity and managed data services to ensure safety and seamless communication for passengers, crews, and militaries, from aircraft and airports to air traffic management. Join us in creating solutions that connect the world, one flight at a time. Start your application today.

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 95,500 USD - 181,700 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.

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