Database Engineer (PostgreSQL/MongoDB)

Location: Remote, from the Warsaw office or a coworking space in your city; occasional on-site visits to data centers in Poland and across Europe.

Salary: PLN 20,000–22,500 per month.

Company

hirify.global is a financial-industry fintech company providing online trading of financial instruments, with operations across several countries.

What you will do

• Administer, configure, and maintain production PostgreSQL clusters with replication, connection pooling, and high availability.
• Manage distributed MongoDB environments, including sharded clusters, replica sets, and query routing.
• Tune database and system performance, plan capacity, optimize queries and indexes, and diagnose storage I/O issues.
• Design and automate backup, point-in-time recovery, failover, disaster recovery, and business continuity processes.
• Automate monitoring, deployments, maintenance, and DBA operations using Ansible, Python, and Bash.
• Participate in paid on-call rotations, recovery exercises, data-center operations, and collaboration on data modeling, schema changes, and compliance.

Requirements

• 4+ years of hands-on experience as a Database Administrator in enterprise-scale production environments.
• Practical expertise with PostgreSQL master-replica architectures, Patroni or similar failover mechanisms, logical and physical replication, EXPLAIN plans, and pg_stat_statements.
• Hands-on MongoDB experience with sharding, shard balancing, replica-set elections, aggregation-pipeline tuning, and WiredTiger optimization.
• Expertise in enterprise backup and recovery architectures, plus practical DR and BCP experience including automated failovers and recovery exercises.
• Strong Linux administration skills covering performance troubleshooting, storage and IOPS analysis, memory management, networking, and system hardening.
• Experience with database observability platforms such as Prometheus, Grafana, or Zabbix.
• Solid Bash, Python, Ansible, and Git scripting and automation skills.
• Willingness to participate in paid on-call rotations and travel occasionally to data centers.
• Polish proficiency sufficient for fluent communication. Technical English for fluent cross-team communication at minimum B2 level.

Nice to have

• MS SQL and MySQL experience.
• Familiarity with Kubernetes database operators.
• Terraform or Infrastructure-as-Code experience for database provisioning.
• Knowledge of database security, compliance, and auditing, including encryption, TLS, NIS2, and GDPR.
• Relevant PostgreSQL or MongoDB certifications.

Culture & Benefits

• Influence on company and product development within an experienced knowledge-sharing team.
• Regular feedback, clear career paths, team-building meetings, and a training budget.
• Remote work, the Warsaw office, or a coworking space in your city.
• Birthday and parental extra days off, tailored equipment, private medical care, and group insurance.
• Access to English-learning and benefits platforms, plus a wellbeing platform.