Principal Software Engineer Jobs in San Jose, CA

Date Posted:

2026-06-11

Country:

United States of America

Location:

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

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 Principal Software Engineer with specialization in Development, Security, and Operations (DevSecOps) 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. 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 challenges 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 based out of our San Jose, CA location. To learn more about AST please, :

Applied Signal Technology: WHO WE ARE

What You Will Do:

• Drive and manage the AST’s DevSecOps development environment, tooling, and process workflows.

• Coach, mentor, and enable engineering teams to adopt and utilize AST’s DevSecOps ecosystem and workflows.

• Oversee the installation, configuration, and maintenance of enterprise DevSecOps applications, including:

• Application and plugin installations/deployments, upgrades, patches, and configurations.

• System migrations and cross-application integrations.

• User provisioning, access management, and permissions.

• Provide project and technical user support, including:

• Project onboarding and custom support requests.

• Day-to-day troubleshooting, documentation of best practices, and template creation.

• Collaborate closely with project managers, engineering leadership, and development teams within the Engineering organization.

• Travel up to 25% to other AST locations and customer sites within the U.S.

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

• Experience managing and/or supporting the following enterprise applications:

  • Atlassian Jira/Confluence

  • Gitlab

  • Cloudbees CI (Jenkins)

  • Artifact repositories (JFrog Artifactory, Sonatype Nexus Repository, Pulp)

  • Software Supply Chain Security tools (JFrog Xray, Sonatype Lifecycle, Black Duck)

  • Container and Orchestration tools (Docker, Podman, Kubernetes, Helm)

  • Secrets management tools (AWS Secrets Manager, GitGuardian)

• Experience with managing and developing CI/CD pipelines

• Experience with scripting languages (Python, Go, Groovy, Bash, Perl, etc.)

• Experience with Linux System Administration and Red Hat (or compatible variants) based distributions (RHEL, Fedora, CentOS, Rocky)

• Experience with virtualization technology (KVM, VMWare, Hyper-V)

• Ability to work collaboratively within multi-disciplinary teams

• Ability to obtain a U.S. government issued Top Secret SCI (TS/SCI) security clearance with polygraph is required after start.

• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Qualifications We Prefer:

• Experience managing/supporting and/or developing with any of the following:

  • Infrastructure as Code tools (Terraform, Ansible, Puppet, Salt)

  • Observability dashboard tools (Datadog, Splunk, Grafana, Kibana)

• Possess professional certifications in DevOps/DevSecOps and/or CI/CD areas:

  • Containers and Orchestration (CKS, CKA, CKAD, DCA)

  • AWS Certified DevOps Engineer – Professional, AWS Certified Security Specialty

  • Red Hat Certified Engineer (RHCE), Linux Foundation Certified Engineer (LFCE), or equivalent advanced Linux credential

  • CompTIA Security+

  • GitLab Certified CI/CD Associate, GitLab Certified Security Specialist

• Strong foundation in Agile software development

• Cross-platform development, focusing on RHEL (CentOS / Rocky) 8+ and Windows

• Compliance familiarity key U.S. government cybersecurity regulations and standards such as NIST SP 800-171, FIPS, and/or DFARS/CMMC

• Familiarity with or basic understanding of telecommunications systems concepts and/or signal processing

• 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 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!

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 customer succeeds 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. 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.

#AST

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 118,300 USD - 224,900 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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