Senior SQL Developer

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 Senior 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.

Advanced SQL Development: Craft efficient and optimized SQL queries, stored procedures, functions, and views tailored to complex data processing needs.

• System Integration: Work closely with application developers to embed database logic seamlessly into applications.
• Performance Tuning: Analyze and resolve performance bottlenecks across development, testing, and production stages.
• Cloud Migration: Support and lead efforts in moving legacy systems to AWS cloud databases like RDS or Aurora PostgreSQL.
• Compliance & Security: Ensure all development aligns with federal data governance, access control, and security standards.
• Documentation: Create and update comprehensive documentation such as data dictionaries, standard operating procedures (SOPs), and runbooks.
• Mentorship: Provide technical guidance and mentorship to junior database developers and enforce best practices.

Required Qualifications

• Experience: Minimum of 8 years in SQL development with progressive responsibilities.
• SQL Mastery: Deep expertise in complex SQL query design, optimization, and debugging.
• Regulated Environment Background: Prior experience working in government or highly regulated sectors.
• Cross-Functional Collaboration: Demonstrated ability to work alongside development, infrastructure, and security teams.
• Security Focus: Strong knowledge of database security, access control models, and regulatory compliance.
• Analytical Mindset: Capable of diagnosing and resolving issues quickly under pressure.
• Clear Communication: Skilled in creating detailed documentation for auditing, training, and operational continuity.

Preferred / Bonus Skills

• Cloud Database Expertise: Proven success in migrating systems to AWS RDS or Aurora PostgreSQL.
• Multi-RDBMS Proficiency: Familiarity with Oracle, SQL Server, MySQL, or similar platforms.
• DevOps Integration: Exposure to CI/CD practices and tools for managing database changes.
• Ticketing & Reporting Tools: Experience with platforms like ServiceNow, and generating audit-ready documentation.
• Agile Practices: Understanding and experience with Agile or Scrum methodologies.

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Here at Harmonia we are pleased to have been repeatedly recognized for our outstanding work culture, the innovative work we do, and the employees on our team who make a difference each day.  Some of these recognitions include:  

• Recognized as a Top 20 "Best Place to Work in Virginia"
• Recipient of Department of Labor's HireVets Gold Medallion
• Great Place to Work Certification for five years running
• A Virginia Chamber of Commerce Fantastic 50 company
• A Northern Virginia Technology Council Tech 100 company 
• Inc. 5000 list of fastest growing companies for eleven years
• Two-time SBA SBIR Tibbett's Award winner
• Virginia Values Veterans (V3) Certification

We recognize that every bit of our success is the result of our teams of hard-working, motivated, and innovative professionals who are proud to call themselves part of the Harmonia family!   In addition to competitive compensation, a family-focused culture, and a dynamic, productive work environment, we offer all full-time employees a variety of benefits including, but not limited to

• Traditional and HSA- eligible medical insurance plans w/ Wellness Incentives for employees and family
• 100% employer-paid dental and vision insurance options 
• 100% empl