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Full Stack Developer - Software Developer Expert

Company:
Cornerstone Defense
Location:
Herndon, VA
Posted:
February 11, 2026
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Description:

Location: Herndon, Virginia

Type: Contract

Job #3924 *Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Company Overview:

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense.

Benefits Overview :

Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *

Required Education, Experience, & Skills

We are seeking an experienced Full Stack Developer to join our technology-based program supporting a key government customer. As a Full Stack Developer, you will play a critical role in designing, developing, and deploying sophisticated enterprise computing infrastructure, including web applications, network infrastructure, and cloud services. This is a fast-paced, challenging, and rewarding opportunity to work on a complex and high-profile program.

Bachelor's or Master's degree in Computer Science, Engineering, or related field

Minimum 11 years of relevant experience in full-stack development, with expertise in:

+ Front-end development: HTML5, JavaScript, TypeScript, CSS

+ Back-end development: Java Spring, APIs, microservices

+ Database management: RDBMS and NoSQL databases

+ Testing and debugging: hands-on experience with testing frameworks and tools

Hands-on experience with AWS cloud services, DevOps tools, and software development methodologies

Strong analytical and problem-solving skills, with ability to identify issues and implement corrective actions

Excellent communication and collaboration skills, with ability to work effectively in a team environment Preferred Education, Experience, & Skills

Experience working in a SecDevOps Agile environment

Knowledge of migrating Ruby on Rails to Java

Familiarity with Infrastructure as Code (IOC) and cloud design principles

Understanding of SecDevOps and its applications

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