Azure SQL Performance Architect for SaaS Cost Optimization

TOPdesk; Delft; Hybrid; EUR 90,000 - 140,000; Full time

Job summary

TOPdesk is seeking a Senior Database Engineer in Delft to own the Azure SQL estate within a hybrid SaaS environment. You will shift from reactive fixes to proactive management, balancing performance and cost while enabling developers.

You’ll drive index hygiene, query tuning, and cost attribution, partnering with SRE and engineering teams to reshape the platform for scalable multi-tenant usage.

Qualifications

• 5+ years hands-on as a Database Administrator, Database Engineer, or Performance Specialist in Microsoft SQL Server environments.
• Deep, current expertise in Microsoft SQL Server, specifically Azure SQL (Managed Instances) and related flavours.
• Proven performance tuning at API scale: index optimisation, execution-plan analysis, query tuning, locking and concurrency.
• Strong on elastic pools, resource sharing, and noisy-neighbour management in multi-tenant SaaS.
• Comfortable advising on multi-tenancy patterns and working around ORMs (Jooq, JPA, custom persistence).
• Consultative communicator who can spot inefficiencies and help ship code-level fixes with engineering teams.

Responsibilities

• Own the Azure SQL estate and drive proactive cost and performance management.
• Perform structural performance engineering: monitor queries, optimize indexes, and manage execution plans.
• Ensure observability with tagging and monitoring to attribute load and cost by service and tenant.
• Ensure resilience and security: backups, DR testing, high availability, patching, and privileged access control.
• Advise engineering teams to own data solutions and reduce ad-hoc production queries.
• Shape target architecture with sharding, multi-tenancy models, and event-driven decomposition to reduce load.

Skills

Azure SQL

SQL Server

Performance tuning

Index optimization

Query tuning

Noisy-neighbour management

Multi-tenancy

ORMs (Jooq, JPA)

Education

Bachelor's degree in CS or related field

Tools

Jooq

JPA

Custom persistence frameworks

Job description

TOPdesk is seeking a Senior Database Engineer in Delft to own the Azure SQL estate within a hybrid SaaS environment. You will shift from reactive fixes to proactive management, balancing performance and cost while enabling developers.

You’ll drive index hygiene, query tuning, and cost attribution, partnering with SRE and engineering teams to reshape the platform for scalable multi-tenant usage.