🕒 7 days ago
Administer and optimize database and application environments, providing technical support across installation, access management, incident response, performance monitoring, and database and application support coordination.
Senior Database Engineer
🕒 5 days ago
📍 🇵🇱 Warsaw - Remote🎸 Senior🗄️ Database Administrator📢 🇵🇱 Polish Required📢 🇬🇧 English Required💼 Full-Time
PostgreSQLMongodbLinuxDatabase Performance Tuning
📜 Description
- Administer and maintain production PostgreSQL clusters, including replication, connection pooling, and high availability.
- Design and optimize MongoDB sharded clusters, replica sets, and query routing.
- Tune database performance and plan capacity by diagnosing bottlenecks, queries, indexes, engine settings, and storage I/O.
- Design and automate backup and recovery strategies, including point-in-time recovery, and run disaster recovery and failover drills.
- Administer Debian/Ubuntu database systems and automate maintenance, monitoring, deployments, and routine DBA tasks.
- Collaborate with development, platform, and security teams on data modeling, schema changes, and compliance.
🛠️ Requirements
- 4+ years of hands-on experience as a Database Administrator managing enterprise-scale production environments.
- In-depth practical knowledge of PostgreSQL: master-replica architectures, failover mechanisms (e.g., Patroni), logical/physical replication, and deep performance diagnostics (EXPLAIN plans, pg_stat_statements).
- Hands-on experience with MongoDB in distributed environments: sharding architecture, shard balancing, replica set election mechanics, aggregation pipeline tuning, and wiredTiger engine optimizations.
- Proven expertise in enterprise backup & recovery architectures.
- Strong Linux systems administration background (performance troubleshooting, storage/IOPS analysis, memory management, networking).
- Experience with modern database observability platforms (e.g., Prometheus, Grafana, Zabbix).
- Practical experience with DR and BCP frameworks, including automated failovers and real-world recovery exercises.
- Solid scripting and automation skills: Bash, Python, Ansible, and Git.
- Willingness to participate in paid on-call rotations and occasional travel to data centers.
- Polish proficiency sufficient for fluent communication.
✨ Benefits
- Real influence on the development of the company and the product.
- Work in an experienced team that is happy to share its knowledge.
- A clear vision of development thanks to regular feedback and clear career paths.
- Regular team-building meetings.
- A training budget for courses and conferences that interest you.
- An extra day off on your birthday.
- An extra day off for parents.
- Equipment tailored to your needs.
- Private medical care and group insurance.
- Access to an e-learning platform for learning English and a benefits platform.
Full job description
XTB is a global company from the financial industry, focusing on online trading of financial instruments. We are the largest FinTech in Poland and a leader in Central and Eastern Europe, and the range of our operations covers several countries, including Asia and South America. At XTB, we focus on the development of our employees, giving them opportunities to gain knowledge and skills in various fields, as well as offering a number of training and development programs. If you are looking for challenges and want to gain valuable experience in an international business environment, XTB is the right place for you.
We are a certified Great Place to Work company.
We are looking for an experienced Database Administrator (DBA) to take ownership of our mission-critical database infrastructure. In this role, you will manage, scale, and optimize high-availability PostgreSQL clusters and distributed MongoDB sharded environments, ensuring data integrity, peak performance, and enterprise-grade resilience.
Responsibilities
Requirements
Nice to have
What we offer
Benefits
Similar jobs
Search more Database Administrator jobs
MySQL Database Administrator
🕒 10 days ago
Miratech👥 501 - 1000 employees🏢 Information Technology And Services
🕒 10 days ago
Administer and optimize highly available MySQL databases across production environments, owning performance, replication, backup and recovery, automation, and support for cloud database modernization.
MySQL Database Administrator
🕒 10 days ago
Miratech👥 501 - 1000 employees🏢 Information Technology And Services
🕒 10 days ago
Administer and optimize highly available MySQL databases, supporting production systems across global data centers while improving performance, automation, and cloud database operations.
🕒 13 days ago
Administra e evolui bancos de dados relacionais e NoSQL em ambientes críticos, garantindo disponibilidade, integridade e performance enquanto apoia squads de desenvolvimento, BI e Data Science.
Administrador de banco de dados PostgreSQL
🕒 14 days ago
Vempralanlink👥 1001 - 5000 employees🏢 Information Technology And Services
🕒 14 days ago
Administra ambientes corporativos PostgreSQL, otimizando desempenho e conexões, mantendo alta disponibilidade, backups e recuperação de desastres, e apoiando governança, segurança e integração com equipes de TI.