Principal Software Engineer; Onsite

Date Posted:

Country:
United States of America

Location:

US-AL-HUNTSVILLE-401 ~ 401 Jan Davis Dr NW ~ JAN DAVIS 401

Position Role Type:
Onsite

Secret (DoD). U.S. citizenship required for clearance. Must obtain interim U.S. government issued clearance prior to start date.

A Principal Software Engineer will support one or more phases of the System Development Life Cycle (SDLC) – requirements, design, development (using C and C++), test, validation, and maintenance. This is an onsite role based in Huntsville, AL.

• Collaborate with cross-functional, agile teams to define, design, and implement new features, ensuring system integration and scalability.
• Troubleshoot, debug, and optimize existing code for performance and efficiency in complex environments.
• Write and maintain comprehensive documentation for software applications, including system architecture and design specifications.
• Participate in product reviews and ensure adherence to engineering standards and best practices.
• Stay current with industry trends and advancements in modern languages, Artificial Intelligence (AI), Dev Sec Ops , and other methodologies and technologies, especially in relation to complex systems.
• Exhibit leadership behaviors and practices and serve in leadership roles (part‑time or full‑time).
• Travel and off‑hours testing (2nd or 3rd shift) may occasionally be required.

• Agile methodology and the associated tools.
• Leadership tools associated with Proposal efforts and Earned Value (EV).
• Modern Dev Sec Ops  and Continuous Integration/Continuous Delivery techniques.
• Test‑Driven Multi‑Disciplined Capability (TDMC) Product Development methodology.
• A variety of domains such as battle management, command & control, communications, radar, missile, and/or modeling & simulation.
• Work across engineering disciplines to develop solutions to complex problems in support of defense systems.
• Use AI to increase efficiency, resulting in higher quality products, across the SDLC.

• Minimum 8 years of experience and a bachelor’s degree in STEM.
• Experience leading a small team (e.g., estimating effort, decomposing tasks, tracking and reporting progress).
• Experience developing complex systems and applications using an object‑oriented language, especially C++.
• Experience with Unix/Linux operating systems.
• Proficiency with data structures, software design principles, and coding algorithms for high‑concurrency and distributed systems.
• Experience with embedded systems, real‑time systems, or large‑scale applications.
• Experience with multithreading, memory management, and performance optimization in complex environments.
• Shell scripting experience (tcsh, csh, bash) and use of tools such as Git/Clearcase and debuggers.
• Experience with Agile or Scrum methodologies.
• Must obtain and maintain a U.S. government issued interim Secret clearance before start. U.S. citizenship required.

• Active Secret security clearance.
• Experience as a Scrum Master and/or Product Owner.
• Experience with network communication protocols and embedded real‑time OS such as VxWorks and Integrity.
• Experience with OO languages such as Java, C#, and Ada.
• Competency with Red Hat Enterprise Linux.

• Medical, dental, vision, life insurance, short‑term disability, long‑term disability, 401(k) match.
• Flexible spending accounts and flexible work schedules.
• Employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays.
• Eligibility for annual incentive compensation programs based on performance.

Salary range: 107,500 USD – 204,500 USD.

This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS) handles the clearance process. More information: https://(Use the "Apply for this Job" box below)..htm

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, 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.