Everforth ECS is seeking a Senior Software Developer (Top Secret Cleared) to work in our Washington, DC office. Please Note: This position is contingent upon contract award.
We are seeking a cleared Senior Software Developer to design, build, test, integrate, maintain, and support secure applications and software capabilities for classified and sensitive law enforcement, national security, and criminal justice programs within the National Security Business Unit. 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
General Description of Benefits
Preferred Qualifications- 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.
Skills Required
- Active Top Secret clearance with SCI eligibility (TS/SCI preferred)
- 8+ years of software development experience
- Experience with .NET and C#
- Experience with Java and Python
- Experience with JavaScript and SQL
- Experience building and integrating APIs and database development
- Familiarity with source control and testing
- Knowledge of secure coding practices and DevSecOps concepts
- Experience with Agile delivery, documentation, release preparation, and production support
- Experience troubleshooting application issues and supporting releases
- Ability to collaborate with product owners, analysts, system engineers, cybersecurity, and operations teams
ECS Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ECS and has not been reviewed or approved by ECS.
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Healthcare Strength — ECS advertises multiple national-network medical plan options with HSA eligibility alongside dental and vision coverage. Coverage generally begins quickly and is paired with company-paid short- and long-term disability, adding stability to the health package.
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Retirement Support — A 401(k) with Safe Harbor and immediate vesting on employer contributions is emphasized, with an employer match available. Access to an employee stock purchase plan via the parent company provides an additional savings avenue.
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Parental & Family Support — Paid parental leave up to 30 days, adoption assistance, and other family-oriented leaves are highlighted. Feedback suggests these offerings add meaningful value beyond base pay for many roles.
ECS Insights
What We Do
ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries. ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications in their technologies. Headquartered in Fairfax, Virginia, ECS has more than 3,400 employees throughout the U.S. and has been recognized as a Top Workplace by The Washington Post for the last five years.
