Senior Database Developer; Web Technologies & Data Migration

Senio Database Developer (Web Technologies & Data Migration)

Location:

Annapolis Junction

Compensation Range: $200 – 220k

Clearance:
Active TS/SCI with Polygraph required

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.

• 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
• College America 529
• Fitness Reimbursement Program
• Travel Assistance
• Norton Lifelock Benefit Solutions
• Life Planning Financial & Legal Services

Seeking a skilled Database Developer with strong expertise in Oracle PL/SQL, REST APIs, and front-end web technologies, including HTML, CSS, and JavaScript. The ideal candidate will have hands‑on experience with data migration projects and a proven ability to design, develop, and optimize database‑driven applications.

• 6+ years’ experience with a relevant bachelor’s degree OR 10+ years of experience
• 3 years of consulting experience preferred

• Design, develop, and maintain database solutions using Oracle PL/SQL
• Write efficient queries, stored procedures, functions, and triggers
• Design, develop, and integrate RESTful APIs
• Collaborate with cross‑functional teams to build and support web‑based applications
• Develop and maintain front‑end components using HTML, CSS, and Java Script
• Design, develop, and maintain websites and web applications
• Plan and execute data migration activities, including data mapping, transformation, and validation
• Optimize database performance and troubleshoot issues
• Ensure data integrity, security, and compliance with best practices
• Document technical designs, processes, and workflows

• Experience with Oracle databases 19c or higher
• Strong proficiency in Oracle PL/SQL and relational database concepts
• Experience designing and integrating REST APIs
• Solid experience with HTML, CSS, and Java Script
• Proven experience in data migration projects and tools
• Experience in designing, developing, and maintaining websites and web applications
• A security‑conscious engineer capable of implementing and maintaining end‑to‑end security measures across the entire stack
• Experience developing, testing, and debugging software components, and following formal change management processes to deploy solutions to production environments
• Ability to perform light Unix administration, including user access management, access lists and permissions, log analysis, system performance management, software updates, system performance monitoring, and shell scripting for automation tasks
• Experience with Oracle REST Data Services (ORDS) and Middleware (e.g., Tomcat)
• Experience with Oracle JSON and handling JSON data within the database
• Experience with database performance tuning and query optimization
• Familiarity with version control systems (e.g., Git)
• Strong problem‑solving and analytical skills
• Excellent communication and teamwork abilities

• Knowledge of ETL tools and data integration techniques
• Understanding of Agile development methodologies
• Experience with Perl and Python scripting