Senior Software Engineer

Leidos is hiring a Senior Software Engineer for a hybrid role supporting the Chinook program for an Intelligence Community customer. You will help deliver secure, mission-critical web and mobile applications while working in an Agile environment with hands-on engineering responsibilities and Scrum ceremony facilitation.

This position combines full-stack delivery, AWS cloud deployment, and cross-platform mobile development. You will collaborate with DevSecOps on CI/CD, Docker, monitoring, and infrastructure needs, while partnering with Product Owners and customer stakeholders to align sprint work to mission priorities.

Responsibilities

• Design, develop, test, and maintain scalable, secure web and mobile applications for mission-critical customer requirements.
• Build responsive front-end applications using Next.js, React.js, JavaScript, and CSS, and develop backend services and RESTful APIs using Python and Django.
• Develop and maintain content management solutions with Wagtail CMS, and optimize PostgreSQL for performance and data integrity.
• Support cross-platform mobile development with React Native and native iOS applications using Swift, SwiftUI, UIKit, Xcode, and Apple iOS SDKs.
• Maintain clean, reliable code through peer reviews, troubleshoot complex issues, and implement unit, integration, and automated testing.
• Develop, deploy, and maintain secure, scalable applications in Amazon Web Services (AWS).
• Collaborate with DevSecOps engineers to support CI/CD pipelines, Docker deployments, cloud infrastructure, and application monitoring.
• Troubleshoot application and infrastructure issues while ensuring performance, reliability, and compliance with customer security requirements.
• Serve as a hands-on engineer and facilitate Scrum ceremonies, including sprint planning, daily standups, backlog refinement, sprint reviews, and retrospectives.
• Partner with Product Owners, developers, and customer stakeholders to establish sprint goals, prioritize work, and support mission-aligned delivery.
• Identify and remove team-level impediments, manage technical dependencies, and address risks impacting sprint execution and delivery commitments.
• Use Jira for sprint and backlog management, GitLab for source control and collaborative development, and Rocket.Chat for customer and team communication.

Requirements

• US citizenship is required per contract.
• Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.
• Bachelor’s degree in Computer Science, Software Engineering, or related field and 8-12 years of prior relevant experience, or Master’s with 6-10 years of prior relevant experience.
• 5+ years of hands-on experience designing, developing, and maintaining modern web and mobile applications.
• Strong front-end proficiency in JavaScript, React.js, Next.js, HTML, and CSS, plus backend skills in Python and Django for RESTful APIs.
• Experience with Wagtail CMS or comparable CMS and PostgreSQL or similar relational databases.
• Experience developing cross-platform mobile apps with React Native and native iOS apps using Swift, SwiftUI, UIKit, Xcode, and iOS SDKs.
• AWS experience building, deploying, and maintaining applications, including familiarity with S3, ECS, RDS, CloudFront, and Application Load Balancers (ALB).
• Experience with Docker, Git-based source control, GitLab, and CI/CD practices.
• Familiarity with Kubernetes and container orchestration concepts for deploying, managing, and scaling applications in cloud environments.
• Proven experience in Agile/Scrum, including facilitating Scrum ceremonies, supporting sprint execution, removing impediments, and contributing hands-on development.
• Experience using Jira or comparable tools to manage backlogs, user stories, defects, and sprint progress.
• Strong understanding of secure coding, automated testing, code reviews, software integration, and full-stack troubleshooting.
• Excellent communication, problem-solving, and collaboration skills with ability to work with Product Owners, developers, and customer stakeholders.

Technologies

Next.js, React.js, JavaScript, CSS, HTML, Python, Django, Wagtail CMS, PostgreSQL, React Native, Swift, SwiftUI, UIKit, Xcode, Apple iOS SDKs, Amazon Web Services (AWS), RESTful APIs, Docker, CI/CD pipelines, Jira, GitLab, Rocket.Chat, Scrum, Git, Kubernetes, S3, ECS, RDS, CloudFront, Application Load Balancers (ALB), unit, integration, automated testing, DevSecOps, Scrum ceremonies

Benefits

• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

Preferred Qualifications

• Experience supporting software development programs within the DoD or IC.
• Certified Scrum Master (CSM), Professional Scrum Master (PSM), SAFe Scrum Master (SSM), or equivalent Agile certification.
• Experience serving as a Scrum Master or Agile technical lead, using Agile metrics to improve sprint execution, team performance, and software delivery.
• Experience mentoring developers, conducting technical reviews, and collaborating directly with government customers in mission-critical environments.
• Advanced experience with Next.js, React.js, Django REST Framework, Wagtail CMS, and PostgreSQL, including performance optimization and complex application integrations.
• Experience developing, deploying, and maintaining native iOS applications using Swift, SwiftUI, UIKit, and Xcode, including application signing, provisioning, debugging, and release management.
• Experience integrating React Native with native iOS components and developing mobile applications for both iOS and Android.
• Experience configuring and optimizing AWS ECS, S3, RDS, CloudFront, and ALB, including container orchestration, caching, security, and application performance.
• Experience with GitLab CI/CD, infrastructure-as-code tools such as Terraform or CloudFormation, and automated testing frameworks such as Playwright, Jest, or Pytest.
• Experience developing secure, accessible, high-availability public-facing applications and enterprise content management solutions.

Salary: USD 107,900 - 195,050 per year

Location: Alexandria, VA (hybrid)

Possible work locations: Gaithersburg, MD; Alexandria, VA; Chantilly, VA; Tucson, AZ