Senior Software Developer

Cornerstone Defense LLC; Corridor North (MD); On-site; USD 200,000 - 220,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

Generous PTO Policy

401(k)

Job summary

Cornerstone Defense LLC is seeking a Senior Software Developer to support mission-critical programs in secure environments. You will design, build, and troubleshoot software across enterprise-level systems using Java, JavaScript, RESTful services, encryption technologies, and AWS.

The role requires strong communication, analytical thinking, and the ability to work independently within an Agile team to deliver high-quality results and adhere to best practices.

Qualifications

• BS in Computer Science or related discipline (or 8+ years equivalent experience).
• 8+ years software development experience with Java and JavaScript.
• 8+ years experience with modern development practices, testing frameworks, and Agile methodologies.
• Strong interpersonal communication with ability to build rapport with clients and team members.

Responsibilities

• Develop and deliver mission-critical software in secure environments.
• Design, build, implement, and troubleshoot software solutions across enterprise systems.
• Collaborate across project teams while working in a fast-paced Agile setting.

Skills

BS in CS

Java/JavaScript

Agile methodologies

Communication

8+ years of development

Education

BS in Computer Science or related discipline

Tools

Spring framework

SOA

AWS

Kubernetes

Containerization

Job description

Title:Senior Software Developer

Location: Annapolis Junction
Compensation Range:$200 – 220k
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 *

Description:
The Senior Software Developer supports mission‑critical programs within secure environments and delivers technical solutions across enterprise‑level systems. This role requires deep proficiency in Java, JavaScript, RESTful services, encryption technologies, AWS, and modern development methodologies. The developer will operate independently while collaborating across project teams to design, build, implement, and troubleshoot software solutions. The position demands strong communication skills, analytical thinking, and the ability to perform in a fast‑paced Agile setting while ensuring high‑quality results and adherence to best practices.

Required Skills

• BS in Computer Science or related discipline (or 8+ years equivalent experience)
• 8+ years software development experience with Java and JavaScript
• 8+ years experience with modern development practices, testing frameworks, and Agile methodologies
• Strong interpersonal communication with ability to build rapport with clients and team members

Preferred Skills

• Familiarity with building encryption libraries and key management services
• Ability to establish and enforce best practices for software design and implementation
• Experience contributing to project planning, documentation, testing, and quality assurance
• Experience with encryption concepts and key management
• 5+ years REST API experience
• AWS development experience
• Experience with Spring framework
• Experience with Service‑Oriented Architecture (SOA)
• Experience with containerization and Kubernetes
• Strong analytical troubleshooting and performance evaluation capabilities
• Ability to work within matrixed teams and collaborate with virtual teams
• Ability to work independently, multi‑task, and take ownership across project components
• Ability to work under pressure while meeting tight deadlines and responding to evolving requirements

Additional Desired Skills or Familiarization

An experienced consulting professional with broad understanding of solution design, industry best practices, and multi‑domain technology implementation. Operates independently to deliver quality work products and applies Oracle methodology, company procedures, and leading practices to customer engagements. Demonstrates the ability to provide functional and technical expertise and to consult effectively with customer management teams.