Database Architect

Xebia is a global AI-first, digital transformation, and engineering partner. With over 25 years of experience and a team of 5,000 professionals across 16 countries, we help organizations design and build scalable products, platforms, and data-driven solutions. 

We specialize in Artificial Intelligence, Data and Cloud, Intelligent Automation, and Digital Products, combining deep technical expertise with a strong focus on engineering excellence and a people-first culture.  

In the CEE region, we’re a team of nearly 1,000 experts delivering modern applications, data platforms, and AI solutions for clients such as McLaren, Aviva, Deloitte, Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, Allegro, InPost, and many, many more. We work with leading technologies including AWS, Azure, GCP, Databricks, and Snowflake, and combine strong engineering culture with a consulting mindset and a continuous focus on growth and knowledge sharing. 

Our client is a software company running a large, business-critical ERP system used to support core operational processes such as payroll, billing and workforce scheduling. The organisation is in the middle of a multi-year modernisation programme, moving away from a legacy technology stack toward a modern .NET/web-based platform, while keeping the legacy system fully operational in production throughout the transition.

Contract: B2B or Freelance

You will be:

Strong, hands-on SQL Server expertise (design, indexing, query optimisation, operational practices).
Solid working knowledge of PostgreSQL, sufficient to assess migration feasibility and compatibility.
Proven experience optimising query and index performance in production environments.
Experience modernising or refactoring databases behind legacy applications.
Ability to define and set up database observability/monitoring (baselines, diagnostics, wait stats, deadlock detection, alerting).
A pragmatic, risk-aware approach that balances improvement effort against migration cost and business risk.

Your profile:

• Experience assessing and scoping SQL Server → PostgreSQL migrations (not necessarily having executed a full migration).
• Experience working in environments where legacy and modern systems coexist in production during a transition.
• Comfort working with Specification-Driven Development (SDD) frameworks such as OpenSpec, or similar structured requirements/traceability approaches.
• Ability to produce clear, prioritised, business-readable recommendations for non-DBA stakeholders.
• Work from the European Union region and a work permit are required.