Senior SQL / ETL Engineer (Contract)

About us:

Working at Tech Holding isn't just a job, it's an opportunity to be a part of something bigger. We are a full-service consulting firm that was founded on the premise of delivering predictable outcomes and high-quality solutions to our clients. Our founders and team members have industry experience and have held senior positions in a wide variety of companies – from emerging startups to large Fortune 50 firms – and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability.

The Role:

We are seeking a Senior SQL / ETL Engineer to support data migration, transformation, and database operations initiatives for one of our clients. This role will focus heavily on SQL development, ETL-related workflows, data loading, stored procedures, and large-scale data cleanup and manipulation efforts. The ideal candidate is highly hands-on with SQL and comfortable working directly with engineering and business teams to ensure data accuracy, integrity, and performance across multiple systems.

Key Responsibilities:

• Develop, maintain, and optimize SQL queries, stored procedures, and database scripts
• Load, transform, and validate large datasets within SQL Server environments
• Support ETL-related workflows, including data extraction, transformation, cleansing, and migration activities
• Perform data cleanup and manipulation tasks to improve overall data quality and consistency
• Troubleshoot SQL performance issues and optimize complex queries
• Collaborate with engineering and business stakeholders to understand data requirements and deliver accurate solutions
• Assist with ongoing database maintenance and operational support activities
• Ensure data integrity, validation, and reconciliation across systems
• Create and maintain technical documentation related to database and ETL processes

Required Qualifications:

• Strong hands-on SQL development experience
• Experience working with SQL Server environments
• Advanced SQL query writing and optimization experience
• Experience developing and maintaining stored procedures
• Experience with ETL processes and data migration activities
• Strong experience with data manipulation, cleanup, and transformation
• Experience loading and validating data within relational database environments
• Ability to troubleshoot and resolve data-related issues independently
• Strong attention to detail and data accuracy
• Excellent communication and collaboration skills

Nice to Have:

• Experience writing lightweight automation scripts using Python, Bash, JavaScript, or similar languages
• Experience supporting SQL-based data migration and transformation workflows
• Experience supporting enterprise data migration initiatives
• Experience working within consulting or client-facing environments
• Exposure to reporting or BI tools

Employment Type:

• Contract
• Remote within Mexico