Software Developer

Leidos; San Antonio (TX); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos seeks a software developer to join a dynamic environment supporting operations, data analysis, and data visualization tools. The role covers front- and back-end work, requirements elicitation, design, development, troubleshooting, and ongoing enhancements, with a focus on complex data-driven problems.

On-site presence at Joint Base San Antonio is required, and candidates must hold an active DoD Secret clearance with the ability to obtain TS/SCI.

Qualifications

• BS with 4+ years of relevant experience or MS with 2+ years
• Proficiency in Java, C#/.NET
• Proficiency in Python
• Proficiency in JavaScript frameworks (React.js/Node.js/Next.js)
• Experience with MySQL and MongoDB
• Experience with Windows and Linux
• Experience with Subversion and Git
• UI/UX design experience
• Experience with geospatial data software
• Active DoD Secret clearance or ability to obtain TS/SCI

Responsibilities

• Collaborate with SMEs and stakeholders to deliver support for applications
• Provide maintenance and troubleshooting for enterprise apps
• Diagnose and resolve software issues and performance problems
• Respond to user inquiries and service requests promptly
• Research technical issues to identify root causes and solutions
• Manage multiple requests with prioritization per SLAs
• Follow change management for updates and fixes
• Perform debugging and minor bug fixes
• Monitor performance and identify improvement opportunities
• Provide on-call support as needed

Skills

Java/C# .NET

Python

JavaScript frameworks

MySQL

MongoDB

Windows & Linux

Git & Subversion

UI/UX design

Geospatial data

Education

BS in CS or related field

MS in CS (optional)

Tools

Git

Subversion

Docker

Kubernetes

ActiveMQ

Cloud/IaaS

ETL

Job description

Description

LEIDOS seeks a software developer for work in a dynamic environment supporting operations, data analysis, and data visualization tools. The candidate will work closely with the customer and product users to solve complex data-driven problems throughout the entire software development lifecycle of both existing and new applications. The ideal candidate has the capacity to work both front and back-end portions of a software environment. The candidate will participate in software requirements elicitation, design and development, troubleshooting, system backup/restore, and software enhancements. The candidate is expected to analyze and solve complex use case problems and adhere to well established software design and development principles. A strong candidate will be a self-starter and energized by the capability to learn and implement new skills across both software engineering and user domains.

Candidates who do not currently possess an active TS/SCI will not be considered.

On-Site Requirement:
The position requires on-site presence at Joint Base San Antonio.

Key Responsibilities

• Collaborate directly with Subject Matter Experts (SMEs) and client stakeholders to deliver high-quality technical and application support for multiple utility company applications.
• Provide technical support, maintenance, and troubleshooting for enterprise-level applications, including Commercial Off-the-Shelf (COTS) solutions.
• Investigate, diagnose, and resolve software issues, application errors, and system performance problems.
• Respond to user inquiries, service requests, and trouble tickets in a timely and professional manner.
• Research and analyze technical issues to identify root causes and implement effective solutions.
• Manage and prioritize multiple support requests and open issues based on urgency, business impact, and established service-level expectations.
• Follow established change management processes and best practices when implementing application updates, fixes, and proposed solutions.
• Perform application debugging, troubleshooting, and minor bug fixes to maintain system functionality and reliability.
• Monitor application and internal system performance, proactively identifying potential issues and opportunities for improvement.
• Collaborate with technical teams to elevate and resolve complex application issues while minimizing business disruptions.
• Provide on-call technical support as needed to ensure application availability and operational continuity

Basic Qualifications

• Requires BS and 4+ years of prior relevant experience or Masters with 2+ years of prior relevant experience, additional years of experience will be accepted in lieu of a degree.
• Demonstrated experience in an object-oriented language such as Java, C#/.NET
• Demonstrated experience in Python
• Demonstrated experience with JavaScript frameworks (e.g. React.js/Node.js/Next.js)
• Experience working with relational (e.g., MySQL) and non-relational (e.g., MongoDB) databases
• Experience with Windows and Linux operating system environments
• Experience with code repositories, such as Subversion and Git
• Experience with UI/UX design and best practices, able to translate requirements into a clean and functional interface
• Experience developing software for large sets of Geospatial data
• Troubleshoot and problem solve both technical and non-technical issues
• Able to research and adapt to unfamiliar technologies
• Must have an active DoD Secret clearance with the ability to obtain a Top Secret /SCI.

Preferred Qualifications

• Understanding of cloud infrastructure and services (e.g., IaaS)
• Understanding of various data formats, such as CSV, JSON, XML, etc.
• Experience with ETL processes
• Experience handling big data sets
• Experience with containerization (e.g., Docker and Kubernetes)
• Experience with ActiveMQ

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:

October 30, 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 $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline onlyand 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

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Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.