About the Role
We are seeking a Senior DBA/DBE Consultant to serve as the technical authority on SQL Server internals, performance engineering, and scalability for a leading U.S. financial technology company and regulated bank. This is a hands-on consulting role focused on diagnosing, optimizing, and scaling mission-critical transactional systems supporting high-volume financial operations.

What You'll Do
• Diagnose complex SQL Server production issues using deep knowledge of storage engine internals, query optimization, SQLOS, memory management, transaction logging, and tempdb.
• Lead performance tuning initiatives for high-concurrency OLTP environments.
• Analyze wait statistics, execution plans, DMVs, Query Store, Extended Events, and performance counters.
• Design and optimize indexing, partitioning, statistics, and data lifecycle strategies.
• Resolve blocking, deadlocks, latch contention, parameter sniffing, plan regressions, and I/O bottlenecks.
• Design, implement, and troubleshoot Always On Availability Groups and SQL Server Replication.
• Support disaster recovery planning,



validation, testing, and documentation.
• Develop automation using PowerShell, dbatools, T-SQL, and CI/CD pipelines.
• Collaborate with application engineers, SREs, architects, and security teams.
• Provide mentorship to DBAs and developers while serving as a senior escalation point.

Required Qualifications
• 10+ years of SQL Server DBA or Database Engineering experience.
• 5+ years in a senior or principal performance-focused role.
• Expert knowledge of SQL Server 2016–2022 internals.
• Experience supporting large-scale OLTP systems with multi-terabyte databases and thousands of TPS.
• Strong background in financial services, banking, or payments.
• Advanced T-SQL development and execution-plan analysis.
• Deep experience with partitioning, Always On Availability Groups, and Replication.
• Expertise with Query Store, Extended Events, DMVs, and wait-statistics methodologies.
• PowerSh

📌 Senior DBA/DBE Consultant (Colombia)
🏢 Unosquare
📍 Colombia