Senior Database Administrator

Atos SE; Warszawa; On-site; PLN 60,000 - 80,000; Full time

Job summary

Atos SE is seeking a skilled Senior Database Administrator in Warsaw, Poland. The position involves managing and optimizing PostgreSQL and MySQL/MariaDB databases across on-premise and cloud environments. You will support enterprise-scale systems and actively contribute to cloud migration initiatives.

Candidates should have over 5 years' experience in database administration and 3 years in cloud environments such as AWS, Azure, or GCP. The role offers exposure to cutting-edge technologies and opportunities for continuous development.

Qualifications

• 5+ years of experience in PostgreSQL and MySQL/MariaDB administration.
• 3+ years of experience in cloud environments (AWS / Azure / GCP).
• Experience with database backup and recovery procedures.

Responsibilities

• Provide L3 support for PostgreSQL / MySQL / MariaDB environments.
• Diagnose and resolve performance and availability issues.
• Manage high availability and replication solutions.

Skills

PostgreSQL administration

MySQL/MariaDB administration

Cloud environments (AWS, Azure, GCP)

Database performance tuning

Automation with Python

Tools

pgbouncer

pgpool

HAProxy

Terraform

Ansible

Job description

About the role

We are looking for an experienced Senior Database Administrator to join our international team. In this role, you will manage and optimise PostgreSQL and MySQL/MariaDB databases across on-premise and cloud environments (AWS, Azure, GCP).

You will be working in a multinational environment, supporting enterprise-scale systems and contributing to cloud migration and automation initiatives.

Responsibilities

• Provide L3 support for PostgreSQL / MySQL / MariaDB environments (on-prem & cloud)
• Diagnose and resolve performance and availability issues
• Maintain and upgrade database environments and clusters
• Manage high availability and replication solutions
• Perform database migrations (on-prem → cloud)
• Automate DBA activities using Python, Ansible, or Terraform
• Manage backup and restore processes (e.g. Barman, Networker)
• Support database provisioning and deployments
• Collaborate with internal teams and customers
• Create and maintain technical documentation (HLD / LLD)

What we expect

• 5+ years of experience in PostgreSQL and MySQL/MariaDB administration (on-prem)
• 3+ years of experience in cloud environments (AWS / Azure / GCP)
• Experience with:
  • PostgreSQL / MySQL clusters and tools (pgbouncer, pgpool, HAProxy)
  • Database backup and recovery
  • Database installation, upgrades (minor & major)
  • Data migration tools (pgdump, pg_restore, mysqldump, etc.)
• Knowledge of monitoring and performance tuning
• Hands‑on experience with replication and HA solutions
• Experience with automation tools (Python, Ansible, Terraform)

Nice to have

• Knowledge of PITR (Point-in-Time Recovery) and continuous archiving
• Cloud certifications (Azure AZ-900, AWS CCP, GCP Digital Leader)
• Work in a global, multicultural environment
• Access to cutting-edge cloud and database technologies
• Opportunity to work on large-scale, enterprise projects
• Continuous development and certification support