Agile Senior Software Developer Jobs (NOW HIRING)

The Senior Software Developer will serve as a senior technical contributor responsible for full-lifecycle software development, database and API integration, Agile delivery, secure coding, production support, release preparation, documentation, and modernization of mission-focused applications.The Senior Software Developer will design, build, test, maintain, and support secure applications and software capabilities for classified and sensitive mission environments supporting law enforcement, national security, and criminal justice programs. This role will work closely with product owners, business analysts, testers, system engineers, cybersecurity staff, and operations teams to deliver mission-focused software solutions. The Senior Software Developer will also mentor team members and support National Security Business Unit growth by identifying new application features, workflow enhancements, integration opportunities, technical debt reduction areas, and automation ideas that align with mission needs.

Responsibilities * Design, develop, test, integrate, document, and maintain secure software applications. * Build application features, APIs, interfaces, database components, scripts, and reporting capabilities. * Participate in Agile ceremonies, backlog refinement, sprint planning, demos, and retrospectives.

* Support test planning, release preparation, production deployment, troubleshooting, and defect resolution. * Ensure application changes are secure, maintainable, properly documented, and aligned with change management practices. * Collaborate with product owners, analysts, testers, system engineers, cybersecurity staff, and operations teams.

* Mentor developers, testers, and application support personnel on coding, troubleshooting, documentation, and release support. * Identify opportunities for application modernization, workflow improvement, integration, automation, and technical debt reduction. Salary Range: $145,000-$155,000 Required Skills * Active Top Secret clearance with SCI eligibility; TS/SCI preferred.

* 8+ years of software development experience. * Experience with .NET, C#, Java, Python, JavaScript, SQL, APIs, database development, source control, and testing. * Knowledge of secure coding, Agile delivery, DevSecOps concepts, documentation, and production support.

* Experience troubleshooting application issues and supporting releases. * Ability to collaborate across technical, security, operations, and mission teams. Desired Skills * Agile/Scrum, SAFe, DevSecOps, secure coding, cloud, database, or related certification.

* Experience with SQL Server, Oracle, PostgreSQL, SharePoint, Azure DevOps, Git, case management, content management, or reporting platforms. * Experience supporting classified, law enforcement, national security, criminal justice, defense, or intelligence environments. * Experience mentoring developers and contributing to solutioning, modernization, or account growth.

ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. is the federal segment of , a $4B global organization with over 10,000 employees.

Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.

We value: * Attracting and developing top talent and high-performing teams * Fostering a culture that is engaging, accountable, and mission-driven Meet the challenge. Make a difference with Everforth ECS!