SQL Developer

Harmonia Holdings Group • McLean, VA

153d

About The Position

Harmonia Holdings Group, LLC is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and focused on fostering a workplace that encourages growth, initiative, creativity, and employee satisfaction. The SQL Developer will play a key role in building and maintaining secure, high-performing database systems that support mission-critical government applications. Operating within a remote, clearance-sensitive environment, this individual will drive database modernization efforts—including cloud migration to AWS RDS and Aurora PostgreSQL—while ensuring compliance with federal security and data governance standards.

Requirements

• Bachelors degree in Computer Science, Information Technology Management or Engineering, or other comparable Certifications or experience
• Minimum of 3 years in SQL development with progressive responsibilities
• Deep expertise in complex SQL query design, optimization, and debugging
• Prior experience working in government or highly regulated sectors
• Demonstrated ability to work alongside development, infrastructure, and security teams
• Strong knowledge of database security, access control models, and regulatory compliance
• Capable of diagnosing and resolving issues quickly under pressure
• Skilled in creating detailed documentation for auditing, training, and operational continuity
• Must be a U.S. citizen
• Must be able to obtain and maintain a Public Trust clearance.

Nice To Haves

• Proven success in migrating systems to AWS RDS or Aurora PostgreSQL
• Familiarity with Oracle, SQL Server, MySQL, or similar platforms
• Exposure to CI/CD practices and tools for managing database changes
• Experience with platforms like ServiceNow, and generating audit-ready documentation
• Understanding and experience with Agile or Scrum methodologies.

Responsibilities

• Craft efficient and optimized SQL queries, stored procedures, functions, and views tailored to complex data processing needs.
• Work closely with application developers to embed database logic seamlessly into applications.
• Analyze and resolve performance bottlenecks across development, testing, and production stages.
• Support and lead efforts in moving legacy systems to AWS cloud databases like RDS or Aurora PostgreSQL.
• Ensure all development aligns with federal data governance, access control, and security standards.
• Create and update comprehensive documentation such as data dictionaries, standard operating procedures (SOPs), and runbooks.
• Provide technical guidance and mentorship to junior database developers and enforce best practices.

Benefits

• Traditional and HSA-eligible medical insurance plans w/ Wellness Incentives for employees and family
• 100% employer-paid dental and vision insurance options
• 100% employer-sponsored STD, LTD, and life insurance
• Gym membership reimbursement
• 401(k) matching
• Dollar-for-dollar 501(c)(3) donation matching
• Flexible-schedules and teleworking options
• Paid holidays and Flexible Paid Time Off
• Adoption Expense Reimbursement
• Paid Parental Leave
• Professional development and career growth opportunities and paid training days
• Employer-sponsored Employee Assistance Program for employee and family
• Team and company-wide events, recognition, and appreciation.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Industry: Professional, Scientific, and Technical Services
• Education Level: Bachelor's degree