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Database Administrator Team Lead

Poland
MongoDB SQL Server PostgreSQL AWS Git T-SQL Airflow Liquibase
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Description

DBA Team Lead (MongoDB & Relational)

Location: Poland (PL)

Experience Level: Senior

Description

We are looking for DBA Team Lead (MongoDB & Relational).

Responsibilities:

  • Act as the primary point of contact for all MongoDB-related topics, including reviewing and approving configuration and setup changes.
  • Maintain and support MongoDB databases across both Atlas and on-prem environments.
  • Maintain and support SQL Server and PostgreSQL databases in on-prem and AWS environments.
  • Monitor database systems for health, performance, and availability.
  • Advise software engineers on SQL query optimization and database schema design.
  • Minimize database downtime and manage High Availability (HA) and Disaster Recovery (DR) strategies.
  • Plan and contribute to long-term scalability and database architecture.
  • Implement database changes, apply patches, and manage version upgrades.
  • Assist with building and maintaining data extraction pipelines from MongoDB and SQL Server.
  • Participate in the on-call rotation to support production systems.

Requirements

Requirements:

  • 4+ years of combined experience across data platforms, including at least 2 years in a DBA role (MongoDB and relational databases, infrastructure, and application support).
  • Hands-on data engineering experience (Airflow preferred).
  • AWS experience (minimum 1 year).
  • Advanced T-SQL development skills.
  • Proficiency with Git and modern code management workflows.
  • Strong understanding of backup, recovery, security, and data integrity principles.
  • Excellent problem-solving skills with strong algorithmic thinking.
  • Ability to work effectively in a fast-paced environment and meet deadlines.
  • Fluent in English.

Nice to Have:

  • Experience with dbatools, Redgate SQL Toolbelt, Coralogix.
  • Exposure to CI/CD pipelines and Liquibase.
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CommIT

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