Database Engineer - Consulting assignment

Are you an experienced Database Engineer with deep expertise in PostgreSQL and database migrations? We at WeQuel are currently looking for a Senior Database Engineer for a consulting assignment with one of our clients in Stockholm. This is an exciting opportunity to play a key role in a large-scale database migration initiative, helping modernize a business-critical platform while ensuring stability, performance, and minimal operational disruption.

As a consultant with us, you will have the opportunity to work with some of our clients who are leading companies within the pharmaceutical, manufacturing, and industrial sectors, contributing to process optimization, implementation of new technologies, and the development of sustainable solutions.

About the Role:

In this role, you will lead and actively support the migration of database services from Oracle to PostgreSQL. You will work closely with development teams to translate application requirements into robust database solutions while ensuring compatibility, performance, and reliability throughout the migration process.

Your main responsibilities will include:

• Lead and support the end-to-end migration of Oracle database services to PostgreSQL

• Collaborate with development teams to translate application requirements into database solutions throughout the migration process

• Review and validate database schemas, configurations, and application code changes

• Ensure database performance, compatibility, and reliability during migration

• Document migration learnings, technical decisions, and best practices

• Review the existing database setup and recommend improvements

• Work closely with database and development teams to ensure a smooth and successful migration

We are looking for someone who:

• Has extensive experience as a PostgreSQL DBA or PostgreSQL Developer

• Has solid knowledge of Oracle databases and Oracle-to-PostgreSQL data type mappings

• Has hands-on experience leading or supporting PostgreSQL migration projects

• Has experience working with Liquibase for schema versioning and database migrations

• Is able to work independently within an established migration framework

• Has strong collaboration and communication skills when working with development and database teams

• Is fluent in English, both written and spoken

Meritorious Experience:

• Experience developing Java applications using PostgreSQL

• Experience working with distributed systems and event-driven architectures

• Experience with Kafka and/or Solace

• Experience using AI agents and automation tools in development workflows

• Experience migrating high-traffic services with minimal downtime

We Offer:

At WeQuel, you become part of a consulting team that values people first – we believe that success is built through engagement, collaboration, and development. We offer a flat organization with short decision-making paths, a strong sense of community, and the opportunity to influence your own professional growth.