Senior Software Engineer

KBR, Inc.
El Segundo, California, United StatesFull-time$126,900–$158,600Posted Sep 18, 2026

About the role

Title:

Senior Software Engineer

Belong. Connect. Grow. with KBR!

KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting our national security.

KBR (formerly LinQuest) is the prime contractor on the MSEIT contract. You will join a systems engineering team defining the next generation of space communication systems supporting US Space Force (USSF) satellite communications. You will support Systems Engineering & Integration (SE&I) activities in a multidisciplinary and collaborative environment. You will interface and collaborate with SE&I team members, contractors, government civilians and members of the USSF. You will lead and support several working groups responsible for leading technical discussion, resolve and identify risk, requirement gaps, developing briefings, writing, and tracking action items, and authoring meeting minutes.

The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the US Space Force’s Space Systems Center (SSC). We support the Space Force’s acquisition of state-of-the-art satellite communications systems, providing global secure, survivable, and protected communications for our nation’s warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.

Why Join Us?

Innovative Projects: KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.

Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.

Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense.

Key Responsibilities:

Design, engineer, analyze, and develop software prototypes and/or applications as part of a multi-disciplinary team.

Engage with stakeholders to better define the problem space and vision to determine capabilities and priorities.

Participate in the complete software development lifecycle: user story creation, design, development, automated testing, and operational support.

Design and develop new features to meet evolving end-user requirements.

Work with complex algorithms to deliver optimized solutions for the end user.

Determine software maintainability and overall adherence to user requirements on department standards.

Drive continuous improvement through process and tooling recommendations.

Mentor team members by sharing innovative ideas and industry best practices.

Work Environment:

Location: On-site

Travel Requirements: Minimal

Working Hours: Standard

Qualifications:

Required:

Security Clearance: Ability to obtain and maintain a Secret clearance is required for this position

Experience and Education: Bachelor’s degree in engineering or computer science, or related technical degree

5+ years of software development, including architecture, object-oriented design, coding, and testing, with strong understanding of the software development life cycle.

Strong experience in one or more of the following: Python, Java, or Go.

Experience with Javascript fameworks such as Angular or React.

Experience designing, developing, and deploying web applications using microservices architecture.

Experience designing, developing, and optimizing relational database solutions using PostgreSQL, MySQL, or similar technologies.

Experience working with CI/CD pipelines and software delivery processes using GitLab/GitHub or equivalent technologies.

Excellent problem-solving skills.

Strong passion for conducting research, tackling complex problems, and continuously learning and adopting new technologies.

Organization capability with ability to handle competing priorities.

Strong interpersonal skills, communication (oral and written), and presentation skills.

Proficient in Microsoft Office products (Office, Word, Excel, PowerPoint)

Desired:

Active Secret or higher clearance

Master’s degree in engineering or computer science, or related technical degree

Experience with Docker, AWS and / or Azure, and Kubernetes for containerization and orchestration.

Experience building secure software solutions within DoD or Federal environments.

Experience supporting mission-critical operational systems.

Experience optimizing application performance, scalability, and resiliency.

INCOSE certification, such as CSEP or ESEP

Basic Compensation: $126,900 to $158,600 in El Segundo, CA

The offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.

Ready to Make a Difference? If you’re excited about making a significant impact in the field of space defense and working on projects that matter, we encourage you to apply and join our team.

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.

Responsibilities

  • Design, engineer, analyze, and develop software prototypes and/or applications as part of a multi-disciplinary team.
  • Engage with stakeholders to better define the problem space and vision to determine capabilities and priorities.
  • Participate in the complete software development lifecycle: user story creation, design, development, automated testing, and operational support.
  • Design and develop new features to meet evolving end-user requirements.
  • Work with complex algorithms to deliver optimized solutions for the end user.
  • Determine software maintainability and overall adherence to user requirements on department standards.
  • Drive continuous improvement through process and tooling recommendations.
  • Mentor team members by sharing innovative ideas and industry best practices.

Qualifications

  • Ability to obtain and maintain a Secret clearance is required for this position.
  • Bachelor’s degree in engineering or computer science, or related technical degree.
  • 5+ years of software development, including architecture, object-oriented design, coding, and testing.
  • Strong experience in one or more of the following: Python, Java, or Go.
  • Experience with Javascript frameworks such as Angular or React.
  • Experience designing, developing, and deploying web applications using microservices architecture.
  • Experience designing, developing, and optimizing relational database solutions using PostgreSQL, MySQL, or similar technologies.
  • Experience working with CI/CD pipelines and software delivery processes using GitLab/GitHub or equivalent technologies.

Skills mentioned

PythonReactMicroservicesPostgreSQLCI/CDGitDockerKubernetesAWSSoftware Testing

About KBR, Inc.

At KBR, we deliver science, technology and engineering solutions that are helping governments and companies around the world take on the great challenges of our time. Follow @KBRCareers for opportunities, updates and a closer look at how We do things that matter.

IT Services and IT Consulting10,001+ employeesHouston, Texas

H-1B sponsorship history

Historical employer filing data was found for KBR, Inc.. The employer record includes 77 historical certified applications. This is employer-level history, not a guarantee that this role currently offers sponsorship.