Principal Software Engineer
Trinzic
Huntsville, AL · Posted October 8, 2026
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Where Huntsville, AL ranks
Where Huntsville, AL placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best cities for aerospace and defense jobs555 openings · of 67
- #2Best cities for pay after cost of living in the Southeast$164k · of 33
- #2Best cities for software and engineering jobs in the Southeast701 openings · of 65
- #3Best all-round cities for mid-career professionals in the Southeast74 / 100 · of 33
- #6Best cities for aerospace and defense pay after cost of living$151k · of 19
- #12Best all-round cities for AI careers in the Southeast61 / 100 · of 33
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
Pay compared with the market
This listing does not state pay. Across 91 open principal software engineer listings that state pay, the middle half runs $208,500 to $320,000 and the median is $275,000.
Listed pay is what employers advertise, not what people are paid.
Principal Software Engineer salaries by state · Check your own pay
How AI is used in this kind of work
Among software developers, AI is already used for some of the tasks. Measured exposure for software developers: 29% (some).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
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About the job
Title: Principal Software Engineer
At KBR, we deliver science, technology and engineering solutions to governments and companies around the world. KBR employs approximately 37,000 people worldwide with customers in more than 85 countries and operations in over 28 countries. KBR is proud to work with its customers across the globe to provide technology, value-added services, and long-term operations and maintenance services to ensure consistent delivery with predictable results.
Trinzic is the future independent company to be created through the planned spin-off of KBR's Mission Technology Solutions business, expected in January 2027. Our people work at the frontier of what is possible, delivering solutions in challenging environments and advancing some of the world's highest-priority national security and space missions.
Backed by decades of mission success, deep expertise, and trusted partnerships, Trinzic will launch as a global organization with more than 18,000 employees supporting customers around the world. Join us at a defining moment and help shape the future of a company built to tackle complex challenges and make a meaningful impact.
Candidates who join KBR's Mission Technology Solutions business before the spin-off will transition to Trinzic when the separation is complete and will not need to reapply for employment.
Program Summary
KBR’s Missile, Aviation, and Ground Systems (MAGS) division delivers mission engineering solutions for critical U.S. Army programs, specializing in aviation and ground systems, integrated air and missile defense, and threat and target systems. As a trusted partner of the U.S. Department of Defense, MAGS provides innovative, technology-driven solutions to enhance national security. With a global presence and a strong ethical framework, KBR ensures secure, effective, and mission-ready capabilities worldwide.
Job Summary
We are seeking an experienced Software Engineer to lead the architecture, development, implementation and optimization of software solutions to be integrated into a new Modeling and Simulation Lab. This individual will research and analyze new technology insertion with existing software systems, to include implementing and verifying communication capability between devices, databases, and services. Candidates require strong analytical and problem-solving skills to collaborate with multiple “in-house” and GOTS simulation and tool developers. Strong interpersonal skills will be required as you will interface directly with the Government customer conducting regular software demonstrations. Up to 15% travel for meetings and test events will be required.
The ideal candidate should be a problem-solver, resourceful, independently motivated and detail oriented, willing to travel occasionally, and work in the office when required. The position requires good time management, communication and computer skills.
Relocation: Candidate must be a resident of the North Alabama area or able to relocate to the Huntsville-North Alabama area.
REQUIRED QUALIFICATIONS:
Possess a Bachelor of Science degree in Computer Science or other STEM related fields (Engineering, Physics, Mathematics, CIS, etc.) with 10+ years of experience or a master’s degree in computer science or related STEM fields with 5+ years of experience.
Experience with the latest software development management processes and tools (Agile methods, SCRUM boards, Jira, etc.)
Experience integrating COTS/GOTS products in a software laboratory environment. Analyzing and developing APIs to enhance interoperability amongst products.
Familiarity with Army Integrated Air and Missile Defense Systems.
Working knowledge of programming languages such as Java, C, C++, MATLAB, and/or Python.
Experience with GIT, Gitlab, or DevOps (or similar) required.
Candidate must be a US Citizen.
Possess or be able to obtain and maintain a Secret Clearance.
Able to travel up to 15% of the time.
Able to work on site when required.
PREFERRED QUALIFICATIONS:
Experience with missile defense systems.
Experience in physics-based models and simulations.
Linux and Windows software development environments experience.
Ability to develop clear and concise software capabilities demonstrations and briefings and present to government customers.
Experience in software design, development, documentation, and testing of modelling and simulation software.
Familiarity with development and integration of containerized products (e.g. Docker Compose, Kubernetes, etc.)
Experience with SecDevOps and Continuous Integration/Continuous Development pipelines to include resolution of cyber vulnerabilities, bugs and technical issues.
Direct experience as a software development lead with expertise in managing challenging execution schedules.
Excellent written and verbal communication skills, strong social skills, and ability to build consensus among peers while building solid relationships with team members, leadership, and customers.
Proficiency in Microsoft Office applications with strong presentation skills and capable of briefing audiences large or small of varying technical knowledge.
Enjoy working in a dynamic, responsive, and collaborative environment, and dedicated to the success of our government customers.
Belong, Connect and Grow at KBR
At KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team’s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver – Together.
KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.