Senior Software Engineer – Front-end Developer

Location: US-CA-SAN JOSE-826 ~ 200 Holger Way ~ BLDG 826

Date Posted

2026-10-27

Country

United States of America

Location

US-CA-SAN JOSE-826 ~ 200 Holger Way ~ BLDG 826

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

TS/SCI with Polygraph

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.

Applied Signal Technology (AST) is seeking a Senior Software Engineer with specialization in front-end development who strives for excellence and has passion to be part of a team that strengthens our nation and improves the security of our world.

AST provides trusted strategic and tactical SIGINT solutions that secure the interests of the U.S. and its partners. AST’s work in areas such as high-capacity broadband communications, signal processing and analysis, tactical SIGINT, and wireless communications continually challenge our extraordinary engineers to resolve problems and make the world a safer place. AST’s work environment is passionate, highly collaborative and provides engineers with the freedom to strengthen and expand their skills, explore new and creative ideas, and work closely with our nation’s finest service members all while embracing integrity, innovation, and work-life balance.

This is an ONSITE position at the San Jose, CA location.

To learn more about AST, please click the link below.

Applied Signal Technology: WHO WE ARE

What You Will Do

• Apply your front-end development expertise to help create complex, innovative, and mission‑critical signals intelligence solutions. Key responsibilities include:
• Contribute to the requirements definition, design, development, and testing of software, including new features and enhancements to existing applications and systems.
• Collaborate closely with project managers, engineers, and cross‑functional teams to deliver high‑quality software capabilities.
• Follow established development practices and processes to ensure proper configuration management and maintainability of software products.
• Support the continual improvement of the software development environment, including DevOps practices, tools, and workflows within Engineering.

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.
• Extensive experience developing in modern programming languages such as Python, Java, or C++ within a Linux environment.
• Strong experience building complex web applications using the Angular framework and related technologies (TypeScript, JavaScript, DevExtreme, Cytoscape, Leaflet, etc.).
• Working knowledge and proficiency in integrating with back‑end server‑side technologies, including application servers and databases such as Neo4j, PostgreSQL, and InfluxDB, as well as RESTful or similar web services.
• Proficiency with common data formats such as JSON and XML.
• Ability to obtain and maintain a U.S. government issued Top Secret SCI (TS/SCI) security clearance. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer

Experience with microservices architecture, distributed systems, containerized deployments, and modern cloud technologies.

Experience with RESTful APIs, messaging technologies such as Kafka or RabbitMQ, and event‑driven architectures.

Experience with Agile/Scrum methodologies, DevOps practices, and test automation frameworks or tools.

Proficiency with one or more scripting languages (Python, JavaScript, Bash, Perl, etc.).

Experience using configuration management and defect‑tracking tools (e.g., Git, JIRA).

Experience maintaining and working with complex build processes (e.g., Makefiles, CMake).

Working knowledge of telecommunications systems concepts, computer network models, and protocol suites such as OSI, SS7, TCP/IP, and UMTS, including routing protocols (EIGRP, IS‑IS, OSPF, BGP).

Familiarity with telecommunications network infrastructure (routers, switches, etc.) and with network reconnaissance tools and techniques.

Active and transferable U.S. government issued Top Secret SCI (TS/SCI) security clearance with Poly.

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:

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.

Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader.

Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role.

Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility.

Requires advanced knowledge of work area typically obtained through advanced education combined with experience. May have practical knowledge of project

management. Practical to substantial knowledge of RTX projects, programs or systems with the ability to make enhancements and leverage in daily work.

Typically requires: A University Degree or equivalent experience and minimum 5 years prior relevant experience, or An Advanced Degree in a related field and minimum 3 years experience

Engineering/Other Technical Positions: Typically requires a degree in Science,Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations.

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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