Senior SQL Developer

Harmonia Holdings Group, LLC; McLean (VA); Remote; USD 100,000 - 130,000; Full time

Job summary

A leading federal government contractor seeks a Senior SQL Developer to enhance and secure database systems for mission-critical applications. The role involves advanced SQL development, cloud migration to AWS, and ensuring compliance with federal regulations. Join a company that values growth, creativity, and employee satisfaction, offering competitive compensation and a supportive work culture.

Benefits

Medical, dental, and vision insurance

401(k)

Flexible schedules

Paid time off

Professional development

Qualifications

• Minimum of 8 years in SQL development with progressive responsibilities.
• Deep expertise in complex SQL query design and optimization.
• Experience in government or highly regulated sectors.

Responsibilities

• Craft efficient SQL queries, stored procedures, and functions.
• Support migration to AWS cloud databases.
• Ensure compliance with federal data governance and security standards.

Skills

SQL Development

Database Security

Performance Tuning

Documentation

Cloud Migration

Tools

AWS RDS

Aurora PostgreSQL

Oracle

SQL Server

MySQL

Job description

Join to apply for the Senior SQL Developer role at Harmonia Holdings Group, LLC.

Harmonia Holdings Group, LLC is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients. We focus 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.

Responsibilities

1. Advanced SQL Development: Craft efficient and optimized SQL queries, stored procedures, functions, and views tailored to complex data processing needs.
2. System Integration: Work closely with application developers to embed database logic seamlessly into applications.
3. Performance Tuning: Analyze and resolve performance bottlenecks across development, testing, and production stages.
4. Cloud Migration: Support and lead efforts in moving legacy systems to AWS cloud databases like RDS or Aurora PostgreSQL.
5. Compliance & Security: Ensure all development aligns with federal data governance, access control, and security standards.
6. Documentation: Create and update comprehensive documentation such as data dictionaries, SOPs, and runbooks.
7. Mentorship: Provide technical guidance and mentorship to junior database developers and enforce best practices.

Minimum Qualifications

• Minimum of 8 years in SQL development with progressive responsibilities.
• Deep expertise in complex SQL query design, optimization, and debugging.
• Experience working in government or highly regulated sectors.
• Ability to collaborate across development, infrastructure, and security teams.
• Strong knowledge of database security, access control models, and regulatory compliance.
• Analytical mindset capable of diagnosing and resolving issues quickly under pressure.
• Excellent communication skills, especially in creating detailed documentation.

Preferred Skills

• Experience migrating systems to AWS RDS or Aurora PostgreSQL.
• Familiarity with Oracle, SQL Server, MySQL, or similar RDBMS platforms.
• Exposure to DevOps practices and tools for managing database changes.
• Experience with ticketing and reporting tools like ServiceNow.
• Understanding of Agile or Scrum methodologies.

At Harmonia, we are proud of our outstanding work culture, innovative projects, and dedicated team. We offer competitive compensation, a family-focused culture, and a variety of benefits including medical, dental, vision insurance, 401(k), flexible schedules, paid time off, professional development, and more.

We are an Equal Opportunity Employer committed to diversity and inclusion. For accommodations during the application process, contact [e-mail].