Senior SQL Developer — High-Performance DB Optimization

Harvey Nash; England; On-site; GBP 60,000 - 90,000; Full time

Job summary

Harvey Nash is seeking a senior SQL Server specialist to design, optimise and own mission-critical databases powering large-scale, high-volume systems. You will design and optimise complex T‑SQL procedures, conduct deep root-cause analysis on production performance issues, and collaborate with engineering, architecture and DevOps teams.

This role requires hands-on SQL Server 2016+ experience, advanced query design, indexing and concurrency expertise, and a mindset focused on data security and

Qualifications

• Strong hands-on experience with SQL Server 2016+
• Advanced query writing and optimisation
• Execution plan analysis and performance troubleshooting
• Deep understanding of indexing, locking and concurrency
• Database security, roles and best practices

Responsibilities

• Design and optimise complex T‑SQL stored procedures, functions, views and triggers
• Conduct deep root-cause analysis on production performance issues
• Contribute to schema design, capacity planning and lifecycle management
• Ensure data integrity, security and compliance best practices
• Collaborate closely with engineering, architecture and DevOps teams
• Act as a data leader and mentor within the wider team

Job description

Harvey Nash is seeking a senior SQL Server specialist to design, optimise and own mission-critical databases powering large-scale, high-volume systems. You will design and optimise complex T‑SQL procedures, conduct deep root-cause analysis on production performance issues, and collaborate with engineering, architecture and DevOps teams.

This role requires hands-on SQL Server 2016+ experience, advanced query design, indexing and concurrency expertise, and a mindset focused on data security and