Senior Database Developer: SQL Performance & Data Solutions

MACHINE LEARNING TECHNOLOGIES LLC; Columbus (OH); On-site; USD 90,000 - 130,000; Full time

Job summary

DATABASE DEVELOPER role in Columbus, OH, for a government-domain project. You will design, optimize, and maintain database objects across SQL Server, Oracle, and PostgreSQL. Collaborate with developers, analysts, and QA to ensure data integrity, security, and performance.

8–10 years of experience required; W-2/1099/C2C employment options. Requires strong SQL, tuning, data modeling, ETL, and experience with complex queries, stored procedures, and triggers.

Qualifications

• 8–10 years of experience in database development and SQL programming.
• Strong proficiency in complex SQL queries, joins, subqueries, CTEs, and window functions.
• Hands-on experience with stored procedures, functions, triggers, and database optimization.
• Experience with relational databases such as SQL Server, Oracle, or PostgreSQL.
• Strong understanding of database design, indexing, execution plans, and performance tuning.
• Knowledge of data modeling, ETL processes, and data integrity.
• Excellent analytical, troubleshooting, and problem-solving skills.

Responsibilities

• Design, develop, and maintain database objects, including tables, views, stored procedures, functions, and triggers.
• Write and optimize complex SQL queries for performance and scalability.
• Perform database performance tuning, query optimization, and troubleshooting.
• Develop and maintain data integration and data processing solutions.
• Ensure data integrity, consistency, security, and availability.
• Collaborate with application developers, business analysts, and other technical teams.
• Support database testing, deployment, documentation, and production issue resolution.

Skills

Advanced SQL

Query optimization

Stored procedures

Relational databases

Data modeling

ETL

Tools

SQL Server

Oracle

PostgreSQL

Job description

DATABASE DEVELOPER role in Columbus, OH, for a government-domain project. You will design, optimize, and maintain database objects across SQL Server, Oracle, and PostgreSQL. Collaborate with developers, analysts, and QA to ensure data integrity, security, and performance.

8–10 years of experience required; W-2/1099/C2C employment options. Requires strong SQL, tuning, data modeling, ETL, and experience with complex queries, stored procedures, and triggers.