Principal Software Engineer – Front-end Developer

RTX; San Jose (CA); On-site; USD 118,000 - 225,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks of vacation

401(k) with employer matching

Tuition reimbursement

Job summary

Applied Signal Technology (AST) seeks a Principal Software Engineer with specialization in front-end development at our San Jose, CA site. You will contribute to complex, mission-critical signals intelligence software and collaborate with cross-functional teams to deliver robust applications on onsite infrastructure.

The role requires 8+ years in STEM, strong Angular/TypeScript/JavaScript skills, and experience with Linux, RESTful services, and modern web architectures. U.S.

Qualifications

• Degree in STEM with 8+ years of experience.
• Experience with Python/Java/C++ in Linux environments.
• Angular-based web application development experience.

Responsibilities

• Apply front-end development expertise to create complex, mission-critical SIGINT software.
• Collaborate with project managers, engineers, and cross-functional teams to deliver high-quality software.
• Follow established practices for configuration management and maintainability of software products.
• Support DevOps practices and tooling within Engineering.
• Travel up to 25% domestically to other AST sites and customer locations.

Skills

Front-end development

Python

Java

C++

Education

STEM degree

Tools

Angular

TypeScript

JavaScript

DevExtreme

Cytoscape

Leaflet

Neo4j

PostgreSQL

InfluxDB

RESTful APIs

Job description

Location & Role Type

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

Employer

Applied Signal Technology (AST)

Applied Signal Technology: WHO WE ARE

Applied Signal Technology (AST) is seeking a Principal 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.

What You Will Do

Apply your front-end development expertise to help create complex, innovative, and mission‑critical signals intelligence solutions.

• 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.
• Travel: Up to 25% domestic to other AST sites and customer locations.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 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

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 illnessinsurance, group legal, ID theft protection
• Birth, adoption, parental leave benefits
• Ovia Health, fertility, and family planning
• 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
• Teliac Medical Experts, second opinion program
• Eligible for relocation And More!
• 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.

Salary

The salary range for this role is 118,300 USD - 224,900 USD. The salary range provided is a good faith estimate representative of all experience levels.

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.

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.

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.