Software Integration and Test Engineer- Senior

Looking for an opportunity to make an impact?

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

Your greatest work is ahead!

Leidos' Defense Systems is seeking a talented Software Integration and Test Engineer to join a multidisciplinary team to create unique solutions to complex engineering challenges in our Huntsville, AL location. The ideal candidate will thrive in a learning environment that encourages leadership and technical growth.

The Senior-Level Software Integration and Test Engineer will join a highly skilled, multidisciplinary team delivering software solutions across multiple DoD programs. A successful candidate will be analytical and detail-oriented, with a strong ability to define, assess, and execute test strategies. This role focuses on the integration and testing of large-scale software systems, including the development and execution of test procedures and clear communication of results to drive product validation and improvement. The team member will analyze, validate, and trace requirements to verification activities and lead execution across system integration, regression testing, and requirements verification. The role may include leading a team responsible for systems engineering, integration, and testing; therefore, the candidate must be able to provide technical guidance and direction in these areas.

If this sounds like the kind of environment where you can thrive, keep reading!

Leidos Defense Systems Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world's toughest security challenges for customers with "can't fail" missions. To explore and learn more, click here!

You will love this job if you:

• Enjoy working with a diverse set of stakeholders
• Like breaking things or finding the limits of product design
• Thrive on problem solving and debugging complex issues
• Enjoy writing scripts while also getting hands-on with hardware to assemble and integrate systems
• Take an analytical approach to problem solving and data organization
• Enjoy mentoring others and sharing best practices and approaches

Are you ready to make an impact? Share your resume with us today!

Primary Responsibilities

• System level electrical architecture and design
• Create and review block diagrams and electrical system requirements
• Create and review cable specifications and cable drawings
• Parts selection and derating activities
• New hardware design verification testing
• Support system level integration activities

Basic Qualifications

• Have a Bachelor's degree in Engineering (or equivalent) from an ABET-accredited university with at least 12 years of experience in a highly technical role OR a Master's degree in Engineering (or equivalent) from an ABET-accredited university with at least 10 years of experience in a highly technical role
• Highly technical software and system test experience
• Ability to work in an in-person lab environment
• Experience developing and executing test plans and procedures, including documenting detailed test evidence and results
• Experience identifying, tracking, and managing software defects and inconsistencies
• Proven ability to collaborate closely with software engineers and cross-disciplinary engineering teams
• Experience analyzing test failures and recommending issue criticality based on system and mission impacts and risk
• Familiarity with system development processes, including systems engineering, software safety, requirements traceability, and software verification and validation
• Experience developing and maintaining requirements traceability matrices (RTMs)
• Strong troubleshooting mindset with a motivation to solve complex problems
• Experience mentoring peers and junior engineers on testing best practices and approaches
• Residency in, or willingness to relocate to, the North Alabama area for on-site work

Preferred Qualifications

• Experience working in Agile and Scrum-based development environments
• Experience testing complex system of systems architectures
• Experience detailing and using test metrics to track execution progress and quality
• Experience with test automation frameworks and tools
• Working knowledge of IP networking and packet-level analysis using tools such as Wireshark
• Developing test automation using Python or a comparable scripting language
• Customer interaction and engagement in a technical environment
• Decomposing high-level requirements into software test architecture and executable procedures
• Leading software test teams of varying size and complexity
• Experience operating with Scaled Agile Framework, including serving in leadership roles such as Product Owner and/or Scrum Master

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:
February 5, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $116,350.00 - $210,325.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.