We are looking for an experienced SQL Developer with deep, practical expertise in MS SQL Server, with a focus on query optimization, performance tuning, and the design of efficient database schemas. A key part of this role is reviewing, analyzing, and improving existing SQL and schema structures on the OLTP systems.
3+ years of hands-on experience with MS SQL Server as a SQL Developer
~ Demonstrated practical experience in SQL query optimization
~ Strong skills in analyzing execution plans, designing indexing strategies, and tuning performance
~ Strong ability to write clean code in accordance with the project's technical requirements
~ Solid knowledge of OLTP database design principles and best practices
~ Ability to present real examples of performance improvements or schema redesigns you have implemented

Create database objects/writing stored procedure
Analyze and optimize slow SQL queries in MS SQL Server (joins, subqueries etc.)Work with execution plans, indexes, statistics,



and partitioning to enhance performance
Collaborate with developers to ensure efficient SQL and schema use across the platform
Propose structural, architectural, and performance-oriented improvements
Professional training and English/Spanish language classes
Comprehensive medical insurance
Flexible working hours
Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients around the world. Headquartered in Nashville, Tennessee, we have a integral team of over 1,000 professionals and delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions across Fintech, Professional Services, Logistics, Healthcare, and Agriculture. To learn more about how we collect, process, and store your personal data, please review our Privacy Notice:
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📌 Ontwikkelaar (Madrid)
🏢 Trinetix
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