Software Engineer - Full Stack

Software Engineer - Full Stack The Software Engineer – Full Stack designs, develops, integrates, tests, and sustains web-based software supporting Tech(x) customer missions. The position delivers secure, reliable applications across the user interface, application services, and data layers, working with government customers, product stakeholders, and engineering teams throughout the software development life cycle.

• Translate customer needs into software requirements, user stories, acceptance criteria, technical designs, and implementation estimates.
• Develop responsive, accessible user interfaces using HTML, CSS, JavaScript or TypeScript, and an application framework such as React, Angular, or Vue.
• Build and maintain back-end services and RESTful APIs using a project-approved stack such as C#/.NET, Java/Spring, Python, or Node.js.
• Design relational data models, implement database migrations and queries, and optimize application and database performance.
• Integrate front-end components, services, databases, identity providers, and external systems; diagnose issues across the full application stack.
• Apply secure coding practices, input validation, access controls, and secrets management; remediate software vulnerabilities with security personnel.
• Create and maintain unit, integration, and end-to-end tests; conduct code reviews and resolve defects before release.
• Use Git, automated build pipelines, and continuous integration and delivery practices to support repeatable software releases.
• Support deployment, monitoring, troubleshooting, and sustainment in development, test, and production environments.
• Document architecture, interfaces, deployment procedures, and operational guidance; communicate risks, dependencies, and progress.
• Participate in Agile planning and technical reviews; mentor team members and perform other duties as assigned.
• Demonstrated experience delivering production applications across front-end, back-end, and database layers.
• Proficiency with JavaScript or TypeScript and at least one modern front-end framework; proficiency with at least one back-end language and framework.
• Experience developing RESTful APIs, integrating services, and working with relational databases such as SQL Server or PostgreSQL.
• Working knowledge of authentication, authorization, web application security, automated testing, Git, and CI/CD pipelines.
• Ability to troubleshoot distributed application issues, evaluate technical tradeoffs, and write maintainable, well-documented code.
• Ability to work independently and collaboratively, communicate with technical and nontechnical stakeholders, and support customer priorities.
• Experience supporting defense or federal customers and developing applications in controlled or disconnected environments.
• Experience with cloud platforms, Docker, Kubernetes, infrastructure as code, and application observability.
• Experience with application accessibility, security scanning, dependency management, and remediation of security findings.
• Experience leading technical design decisions, mentoring developers, or modernizing legacy applications.

Relevant cloud developer certification, CompTIA Security+, or a certification aligned with the assigned technology stack. Current DoD Secret clearance required. Must be eligible to obtain a Top Secret clearance.

• Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, Information Technology, or a related technical field.
• 4–9 years of relevant software engineering experience, including full stack application development.
• Four additional years of directly related experience may substitute for the degree, subject to contract labor category requirements.

Aberdeen Proving Ground, Maryland. On-site. Up to 30% travel. Tech-X