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NTT DATA Logo NTT DATA · IT - Software Development

Senior SQL Developer (Expert Level / FTE / Onsite)

United States, Jersey City Employment contract · Job Posted June 14, 2026
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Job Description

We are currently seeking a Senior SQL Developer (Expert Level / FTE / Onsite) to join our team in Jersey City, New Jersey (US-NJ), United States (US). We are looking for a seasoned Senior SQL Developer to join our data engineering team. In this role, you will serve as a subject matter expert in relational database design, development, and optimization — driving best practices across the organization and mentoring junior developers. You will work closely with data architects, analysts, and business stakeholders to deliver robust, scalable, and high-performance data solutions.

Job Responsibility

  • Design, develop, and maintain complex SQL queries, stored procedures, functions, triggers, and views across large-scale relational databases
  • Perform deep-dive query performance tuning using execution plans, indexing strategies, query rewrites, and statistics analysis
  • Identify and resolve bottlenecks, long-running queries, and resource-intensive operations in production environments
  • Establish and enforce SQL coding standards, naming conventions, and best practices across the team
  • Lead the logical and physical design of database schemas, including normalization, partitioning strategies, and data modeling
  • Develop and maintain complex reports, dashboards, and data extracts for business intelligence and operational needs
  • Monitor database health, performance metrics, and capacity planning to proactively address issues before they impact operations
  • Manage database backups, recovery procedures, and ensure compliance with data retention policies
  • Handle schema migrations, database upgrades, and patch deployments with minimal downtime
  • Implement and maintain database security, including role-based access control and data masking where required

Requirements

  • 10+ years of hands-on experience writing and optimizing complex SQL in production environments
  • 10+ years of Deep expertise in at least one enterprise RDBMS platform — Microsoft SQL Server or Oracle (proficiency in both is a strong plus)
  • 10+ years of Advanced knowledge of indexing strategies (clustered, non-clustered, covering indexes, columnstore), execution plan analysis, and query optimizer behavior
  • 10+ years of Proven experience with stored procedures, CTEs, window functions, dynamic SQL, cursors, and advanced T-SQL / PL-SQL constructs
  • Strong understanding of database design principles — normalization, referential integrity, partitioning, and data modeling (ER diagrams)
  • 10+ years of Experience with ETL tools and data pipeline development (SSIS, Informatica, dbt, or equivalent)
  • Familiarity with high-availability and disaster recovery configurations (Always On, RAC, mirroring, log shipping)
  • Solid understanding of ACID properties, transaction management, and concurrency control
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