Senior Software Engineer: Mission-Critical Secure Apps

Leidos LLC; Gaithersburg (MD); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave and Retirement

Job summary

Leidos in Gaithersburg, MD seeks a Senior Software Developer to design, develop, test, and deploy secure, scalable applications supporting mission operations. You’ll work with product owners, architects, DevSecOps, and developers in an Agile/Scrum environment on the Maru Program.

The role requires a TS/SCI with poly clearance, 8+ years in software, and strong OO language skills (Java, C#, Python, C++). Remote options are limited; relocation not specified.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or related field and 8–12 years of prior relevant experience.
• 8+ years of professional software development experience.
• Strong proficiency in one or more object‑oriented programming languages such as Java, C#, Python, or C++.

Responsibilities

• Design, develop, test, deploy, and maintain enterprise software applications using modern development practices.
• Collaborate with Product Owners, Scrum Masters, architects, and fellow developers to deliver high‑quality software in Agile sprints.
• Participate in sprint planning, backlog refinement, daily stand‑ups, sprint reviews, and retrospectives.
• Develop clean, maintainable, and well‑documented code following secure coding standards and best practices.
• Design and implement RESTful APIs, microservices, and distributed application architectures.
• Perform code reviews and mentor junior developers to promote engineering excellence and knowledge sharing.
• Troubleshoot complex application issues and perform root cause analysis to improve system reliability and performance.
• Develop automated unit, integration, and end‑to‑end tests to ensure software quality.
• Collaborate with DevSecOps teams to implement CI/CD pipelines and automated deployment processes.
• Optimize application performance, scalability, and security across enterprise environments.
• Participate in architecture discussions and contribute to technical roadmaps and modernization initiatives.
• Support production deployments and resolve issues in mission‑critical environments.

Skills

Java

C#

Python

C++

REST APIs

Git

Agile Scrum

SAFe

DevSecOps

Education

Bachelor’s degree in Computer Science or related field

Tools

Docker

Kubernetes

AWS

Azure

Git

SQL/NoSQL databases

Job description

Leidos in Gaithersburg, MD seeks a Senior Software Developer to design, develop, test, and deploy secure, scalable applications supporting mission operations. You’ll work with product owners, architects, DevSecOps, and developers in an Agile/Scrum environment on the Maru Program.

The role requires a TS/SCI with poly clearance, 8+ years in software, and strong OO language skills (Java, C#, Python, C++). Remote options are limited; relocation not specified.