Senior Database Reliability Engineer (PostgreSQL, Terraform, AWS) at capital – Warsaw | Jobyssey

We are a leading trading platform that is ambitiously expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutting-edge technology and seamless client experience. We deliver only the best, so we are always in search of the best people to join our ever-growing talented team.

We are seeking a highly skilled and proactive Senior Database Reliability Engineer with a strong focus on AWS RDS PostgreSQL, complemented by experience with infrastructure-as-code (IaC) using Terraform and familiarity with RedShift and clichouse .

Current stack: AWS RDS (PostgreSQL,MySQL), AWS RedShift, Clickhouse, Terraform, Ansible.

Responsibilities:

Own the provisioning, configuration, and ongoing maintenance of PostgreSQL and MySQL instances across AWS RDS and on-premises, ensuring they meet uptime and performance targets.
Design and implement automated failover solutions, load balancing configurations, and DNS management strategies to keep databases accessible under failure conditions.
Write and maintain Terraform code to provision and manage database infrastructure - clusters, instances, storage, parameter groups, security groups - with consistency across environments.
Build and manage Ansible playbooks and roles for database deployments, configuration changes, and patching cycles.
Monitor, alert, and tune - using Prometheus and Grafana - to catch performance degradation before it becomes an incident.
Plan and execute database upgrades and migrations, including cross-version and cross-engine work (PostgreSQL, MySQL, Redshift, ClickHouse, DynamoDB), with minimal impact to production.
Manage backup, restore, and recovery processes; test them regularly so they work when it matters.
Harden database security through access controls, encryption at rest and in transit, and periodic audits.
Maintain and improve underlying Linux systems hosting the databases, including security hardening and performance tuning.
Document configurations, runbooks, and disaster recovery plans; participate in on-call rotation.

Requirements:

5+ years of proven experience as a Database Administrator or Database Engineer, with hands-on depth in PostgreSQL and MySQL in production environments.
Solid Terraform experience - you've written and maintained IaC.
Working knowledge of Ansible for configuration management and deployment automation.
Strong Linux system administration skills, including performance tuning and troubleshooting.
Experience designing and operating high-availability solutions - failover, replication, load balancing, DNS management.
Familiarity with Prometheus and Grafana or comparable monitoring tools.
Scripting ability in Bash and/or Python for automation and operational tasks.
Understanding of CI/CD pipelines and how database changes fit into a deployment workflow.
Comfort working in a regulated financial services environment, where access control, encryption, and audit trails are non-negotiable.

Nice to have:

Production experience with ClickHouse, Redshift, MongoDB or Microsoft SQL Server.
Familiarity with Docker and Kubernetes in the context of database workloads.
Prior experience with financial services audit requirements or other regulated environments.
AWS certification (Database Specialty, Solutions Architect, or similar).

What you will get in return:

Competitive Salary: We believe great work deserves great pay! Your skills and talents will be rewarded with a salary that makes you feel valued and motivated.
Work-Life Harmony: Join a company that genuinely cares about you - because your life outside of work matters just as much as your time on the clock. #LI-Hybrid
Generous Time Off: Need a breather? Our annual leave policy lets you recharge and enjoy life outside of work without a worry.
Employee Referral Program: Love working here? Share the love! Bring your talented friends on board and get rewarded for growing our awesome team.
Comprehensive Health & Pension Benefits: From medical insurance to pension plans, we’ve got your back. Plus, location-specific benefits and perks!
Workation Wonderland: Live your digital nomad dreams with 30 extra days to work remotely from anywhere in the world (some restrictions apply). Adventure awaits!
Volunteer Days: Make a difference! Take two additional paid days each year to support causes you care about and give back to the community.

Be a key player at the forefront of the digital assets movement, propelling your career to new heights! Join a dynamic and rapidly expanding company that values and rewards talent, initiative, and creativity. Work alongside one of the most brilliant teams in the industry.

Our company has an Internal Reporting Procedure. It is available from the Human Resources Department upon request [email protected]. You may report a violation referred to in the Procedure under the terms specified therein.

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