Software Engineer Full Stack Senior

• This position is contingent upon contract award.
• This position is eligible for a $500 ZelTech Non-Employee Referral fee. Contact ZelTech Recruiters for questions concerning this matter.
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Location

Charlottesville or McLean, VA

Job Summary

The Software Engineer – Full Stack Senior analyzes, designs, develops, and delivers complex full-stack software solutions supporting enterprise, customer-facing, and mission-critical systems. This role applies advanced technical expertise across front-end, back-end, data, and cloud environments, while providing technical leadership and guidance to development teams. The position supports applications deployed in local, networked, cloud-based, and internet environments.

Responsibilities

• Analyze, design, program, debug, and modify advanced software enhancements and new full-stack software products.
• Lead and support full-stack software architecture and design across front-end, back-end, data-layer, and service-oriented components.
• Develop, maintain, and enhance software used in commercial and end-user applications, including materials management, financial management, HRIS, mobile, and desktop application products.
• Write high-quality, maintainable code using modern programming languages, frameworks, and technologies.
• Perform code reviews and provide technical direction to ensure quality, security, performance, and scalability.
• Complete programming tasks, conduct unit, integration, and system testing, and perform advanced troubleshooting and debugging.
• Design and implement APIs, integrations, and services supporting distributed and cloud-based systems.
• Lead requirements analysis efforts, collaborating with users, stakeholders, and customers to define system capabilities and required modifications.
• Translate business and operational requirements into effective, scalable technical solutions.
• Develop and maintain technical documentation, including system designs, installation procedures, and maintenance guidelines.
• Ensure solutions comply with applicable laws, standards, policies, and established software development best practices.
• Support integration of software solutions into existing or legacy systems.
• Provide technical leadership, mentorship, and guidance to junior and mid-level engineers.
• May lead technical tasks, features, projects, or teams through design, development, and delivery.
• Coordinate with cross‑functional teams to ensure successful software delivery and lifecycle support.

Requirements

• Must be a US citizen.
• Bachelor’s degree (B.A./B.S.) in Computer Science, Software Engineering, Information Technology, or a related discipline.
• Current TS/SCI security clearance.
• Minimum 8 years’ experience.
• Senior‑level professional experience in full-stack software development.
• Strong experience developing, testing, debugging, and maintaining complex software systems.
• Experience working in local, networked, cloud-based, and internet environments.
• Proficiency with modern programming languages, frameworks, and development tools.
• Experience gathering and translating user and system requirements into technical designs.
• Demonstrated ability to provide technical leadership and drive software solutions to completion.
• Successful background and drug screening check.

Preferred Requirements

• Current TS/SCI with CI Poly.
• Experience developing enterprise-scale or mission-critical applications.
• Experience with cloud-native architectures and distributed systems.
• Experience mentoring developers or leading technical teams.
• Experience supporting secure, compliance-driven environments.

Physical Demands or Work Environment

The work environment characteristics and physical demands described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• The majority of the time is spent in an office setting.
• Occasionally lift and/or move up to 25 pounds.
• Specific vision abilities required include close vision, distance vision, color vision and ability to adjust focus.
• Collaborative, cross-functional development environment.
• Regular interaction with customers, end users, and technical stakeholders.
• Requires strong analytical skills, independent judgment, and the ability to manage multiple priorities in a fast-paced environment.

About ZelTech

Founded in 1988 by Ret. Col. Jack L. Ezzell Jr., Zel Technologies is a trusted leader in national security, providing comprehensive research, development, engineering, and operational support to the Department of Defense, the Intelligence Community, and federal agencies. Originally focused on leveraging operational and software expertise to improve time-critical targeting capabilities for the military, the company advanced its capabilities to provide scientific and HUMINT expertise for CBRNE collection and analysis. In the wake of 9/11, Zel Technologies rapidly expanded its capabilities to provide turnkey ISR support services to US Special Operations Forces (SOF), as well as advanced technical & operational intelligence, physical & data science, and engineering support services to the greater Intelligence and SOF Communities supporting global counterterrorism and CWMD operations.

Today, Zel Technologies remains at the forefront of intelligence missions, advancing CWMD and global counterterrorism efforts, while also addressing emerging threats posed by near-peer adversaries. Our team remains committed to delivering adaptive, innovative, and cost-effective solutions across multiple domains, in alignment with the mission priorities of the U.S. Government and its partner nations.

Our Mission

Through our commitment to innovation and quality, our skilled teams deliver robust, technology driven solutions and insights that empower our customers to overcome complex challenges and achieve their mission objectives.

Our Workforce

ZelTech team members represent a wide range of backgrounds, skills, experience, and personalities bound together by common objectives and mutual respect. You will join a caring community of professionals, including many military veterans who challenge and support each other in seeking the right solutions to important matters.

Benefits

• Medical, Dental and Vision Insurance
• 401k immediate vesting with company match
• Flexible Spending Accounts
• Health Savings Account with company contributions
• Employee Assistance Program (EAP)
• Bonuses for performance
• Voluntary life/accidental death & dismemberment
• Educational assistance and special training programs
• Voluntary benefits (accidental, critical illness, whole life)
• Group life insurance (Company paid)
• Short-term and Long-term Disability Insurance (Company paid)
• Paid Time Off (PTO), Holiday Leave, Jury Duty, and Military Leave
• Health and fitness reimbursement
• Referral bonuses
• Employee discounts on various services and products

Equal Opportunities

ZelTech is an equal opportunity employer and does not discriminate based on race, color, religion, creed, sex, age, sexual orientation, national origin, disability, marital status, military status, genetic predisposition, or any other basis protected by