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Software Systems Engineer at LEIDOS, INC. · Katori

Leidos has a new and exciting opportunity for a Software Engineer in our Intelligence Sector, Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits Leidos Pay and Benefits, including 4 or more weeks Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

As a software engineer you will support the full lifecycle of enterprise infrastructure solutions across mission-critical environments, including design, development, integration, operations, modernization, and sustainment activities. This role leverages Python development, GUI applications, and Bill of Materials (BOMs) integration capabilities to automate processes, enhance system performance, and improve operational visibility across mission systems. The position requires collaboration with Government stakeholders, technical teams, and senior leadership to solve complex engineering challenges while ensuring compliance with ISO/IEC 15288 systems engineering standards and delivering high-quality technical solutions in support of mission objectives.

Primary Responsibilities

Design, develop, and maintain Python-based automation tools and infrastructure solutions supporting enterprise and mission environments.
Develop and enhance GUI applications and dashboards for operational monitoring, data visualization, and system management.
Analyze system performance, operational data, and technical trends to support mission and engineering decisions.
Support BOM integration, configuration management, and infrastructure sustainment across enterprise systems.
Apply systems engineering principles throughout the system lifecycle, including requirements analysis, design, integration, testing, operations, and maintenance.
Perform technical analysis and provide recommendations for infrastructure improvements, modernization efforts, and engineering alternatives.
Collaborate with Government stakeholders and cross-functional teams to develop technical documentation, resolve system issues, and ensure quality engineering deliverables aligned with ISO/IEC 15288 standards.

Basic Qualifications:

Bachelor’s degree in Engineering, Computer Science, Information Systems, or a related technical discipline from an accredited college or university with a minimum of six (6) years of systems engineering and/or software engineering experience supporting enterprise or mission-critical environments; candidates without a Bachelor’s degree may be considered on a case-by-case basis and must possess an additional four (4) years of relevant engineering experience. Masters Degrees may count towards experience.
Experience developing Python-based automation solutions, GUI applications, and utilizing enterprise analytics or monitoring platforms to support infrastructure and mission operations
Knowledge of BOM integration, systems engineering lifecycle processes, and ISO/IEC 15288 standards, with strong analytical, troubleshooting, communication, and collaboration skills in fast-paced mission environments
Security Clearance Requirement - Active TS/SCI with Polygraph

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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:

August 17, 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 $107,900.00 - $195,050.00

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.