Software Architecture Engineering

Are you a highly skilled Software Engineer ready to tackle complex technical challenges that directly support our nation’s intelligence mission? Leidos is seeking an accomplished Software Engineer Subject Matter Expert (SME) to join the Chinook Program supporting our Intelligence Community customer.
This is an exciting opportunity to bring your software engineering expertise to a high-impact mission where innovation, technical excellence, and teamwork make a real difference. You will work alongside talented engineers, architects, mission experts, and government stakeholders to develop and deliver secure, scalable, and modern software capabilities that support critical national security objectives.
As a Software Engineer SME, you won’t simply be writing code, you’ll help shape technical solutions, influence architecture, solve challenging engineering problems, and elevate the capabilities of the team around you. We are looking for a hands-on technical leader who thrives in a collaborative environment and is excited about applying modern software engineering practices to meaningful mission challenges.
In this role you will provide hands-on technical leadership across the full software development lifecycle, designing, developing, integrating, testing, deploying, and maintaining mission-critical applications and services. The SME will serve as a senior technical authority within the development team, helping establish sound engineering practices, resolve complex technical challenges, mentor other engineers, and collaborate closely with government and contractor stakeholders.
Serve as the senior technical SME and technical advisor for mission applications under the Chinook program.
Design, develop, integrate, test, deploy, and maintain modern web applications and backend services.
Develop scalable, maintainable, and secure software across both front-end and back-end tiers.
Translate mission and technical requirements into robust software architecture and implementation plans.
Provide technical leadership in software design, architecture, coding standards, code reviews, and engineering best practices.
Develop and maintain RESTful APIs, microservices, data services, and system integrations.
Build responsive and user-focused front-end interfaces using modern web development frameworks
Design and optimize database schemas, queries, data-access layers, and data-processing workflows.
Troubleshoot complex application, integration, performance, and production issues.
Support automated testing, continuous integration/continuous delivery (CI/CD), and DevSecOps practices.
Contribute to containerized and cloud-enabled application environments as applicable to the program.
Participate in Agile/Scrum ceremonies, sprint planning, backlog refinement, demonstrations, and technical working sessions.
Mentor junior and mid-level software engineers and promote consistent engineering practices across the team.
Identify opportunities to improve application performance, reliability, security, scalability, and maintainability.
US citizenship is required per contract.
Bachelor's degree in Computer Science, Software Engineering, or related field and 12-15 years of prior relevant experience or Master’s with 10-13 years of prior relevant experience.
Web: HTML, CSS, JSON, and REST APIs
Object-oriented Programming: Python, Java, and JavaScript
Advanced Programming: Front-end and Back-end Frameworks: React, Angular, Vue.js, jQuery, Spring Boot, Django, Node.js, Flask, or Svelte.
Cloud Development:
Multi-cloud architectures: AWS, IBM, Google, Azure, and Oracle.
Specific AWS Services: S3, SQS, SNS, EC2, CloudFormation and RDS

Relational Database: MySQL, PostgreSQL, or SQL Server
NoSQL Database: Operating System: Windows, Linux
Proficiency with AWS (C2S/GovCloud) and Infrastructure-as-Code (Terraform, CloudFormation).
Established experience building and deploying containerized services (Docker/Kubernetes).
In depth knowledge of Agile/Scrum practices and tools (JIRA, Confluence)
Solid understanding of customer specific data types and standards, such as OGC WMS/WFS, NSG, and GEOINT workflows.
Frontend Web Development: UI/UX
Prior experience supporting Intelligence Community mission systems.
Experience with observability, logging, monitoring, and application performance management.
Advanced certifications such as AWS Certified Developer or Solutions Architect, CISSP, SAFe Agile or similar.
#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.
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. 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. Securing Your Data
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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.