Senior Software Engineer
LeidosAbout the role
Leidos is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Engineer will work with a large team of developers, software engineers and data engineers. The successfully candidate will support continuity of our customer’s mission by helping to modernize and implement industry standards while ensuring secure, reliable, and uninterrupted availability of IT systems.
Primary Responsibilities
Experience in modernization of legacy applications (new software development)
Strong communication, design, and documentation skills
Comfort and familiarity in maintaining legacy applications
Strong time and workflow management skills
Comfort and familiarity designing and utilizing custom ETL methodology
Knowledge/experience with the development of Cloudformation scripts to generate network and application
infrastructure in a repeatable fashion
Ability to write custom scripts to install and configure code in EC2 instances
Comfort and familiarity in unit testing, peer code review, and automated testing techniques like Selenium (create, edit, maintain, execute)
Experience with Python.
Develop Java and Python applications that leverage Neo4j and Elasticsearch
Ability to Implement NodeJS PM2 for application monitoring and resiliency
Utilized SAFe agile techniques to manage workload
Leverage Amazon Web Services
Experience creating RESTful API
Willingness to mentor and teach junior developers’ community best practices in a constructive fashion
Work within the parameters of Agile & Scrum methodologies
Ability to methodically think through new and exciting challenges in a collaborative team environment in order to provide technically sound solutions
Required Skills
Active TS/SCI with Polygraph
Bachelor's degree and 8+ years of experience. Additional experience in lieu of degree.
Must have experience with Java, Springboot, Python and the Cloud / Amazon Web Services
Prior experience reading and developing solutions to customer requirements
Knowledge of Git, Jenkins, or Rundeck
Experiencing working in Command Line (RH Linux)
Desired Skills
Experience with Angular is preferred
Certification - Amazon Web Services (AWS)
Understanding and knowledge with Identity and Accessibility development practices
Experience with automation methodologies like Selenium
Experience with containerization and modular development
Familiarity with UI/UX Design
Full Stack Development
FIP
#MSBA
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 26, 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.
Responsibilities
- Experience in modernization of legacy applications
- Strong communication, design, and documentation skills
- Comfort and familiarity in maintaining legacy applications
- Strong time and workflow management skills
- Comfort and familiarity designing and utilizing custom ETL methodology
- Knowledge/experience with the development of Cloudformation scripts
- Ability to write custom scripts to install and configure code in EC2 instances
- Comfort and familiarity in unit testing, peer code review, and automated testing techniques
Qualifications
- Active TS/SCI with Polygraph
- Bachelor's degree and 8+ years of experience
- Experience with Java, Springboot, Python and the Cloud / Amazon Web Services
- Prior experience reading and developing solutions to customer requirements
- Knowledge of Git, Jenkins, or Rundeck
- Experience working in Command Line (RH Linux)
Skills mentioned
About Leidos
Leidos is an industry and technology leader serving government & 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 $17.2 billion for the fiscal year ended January 2, 2026. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead, visit careers.leidos.com for our latest opportunities.