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Senior Database Engineer
- Pay
- Pay not listed
- Work setting
Remote — work setting source
Work setup in the employer’s posting: remote
From the employer’s posting- Employment
Full-time — employment source
Employment type Full-time
Employment type in the employer’s posting: Full-time
From the employer’s posting
What you’ll bring
All qualificationsCore experience
- 4+ years of hands-on experience as a Database Administrator managing enterprise-scale production environments.
- Familiarity with Kubernetes database operators.
- Hands-on experience with MongoDB in distributed environments: sharding architecture, shard balancing, replica set election mechanics, aggregation pipeline tuning, and wiredTiger engine optimizations.
- Experience with Terraform or Infrastructure-as-Code workflows for DB provisioning.
- Proven expertise in enterprise backup & recovery architectures.
- Knowledge of database security, compliance, and auditing standards (data encryption at rest/in transit, TLS, NIS2, GDPR).
Qualification wording
4+ years of hands-on experience as a Database Administrator managing enterprise-scale production environments.
Familiarity with Kubernetes database operators.
Hands-on experience with MongoDB in distributed environments: sharding architecture, shard balancing, replica set election mechanics, aggregation pipeline tuning, and wiredTiger engine optimizations.
Experience with Terraform or Infrastructure-as-Code workflows for DB provisioning.
Proven expertise in enterprise backup & recovery architectures.
Knowledge of database security, compliance, and auditing standards (data encryption at rest/in transit, TLS, NIS2, GDPR).
Benefits in the posting
Full benefits wording- A clear vision of development thanks to regular feedback and clear career paths.
- Private medical care and group insurance.
- Employment type
- Full-time
From the employer’s posting.
Posting record
Report an errorActively hiringFirst seen by us today, still listed, and not a repost of an earlier posting.
- Status in our records
- Live
- First seen by us
- Nov 9, 2026today
- Recorded sightings
- 1
- Employer says posted
- Nov 4, 2026
These dates show when we found the posting. Check the employer’s website to confirm it is still accepting applications.
How this job compares
xtb is hiring
5 open jobs
Open jobs by the week we first saw them, last 12 weeks.
Hiring recordSee how this role fits your experience
Add your resume and we’ll mark which of these tools you already use, and point out anything in the posting that could rule you out.
- Bash
- Python
- SQL
- Grafana
- Kubernetes
- MongoDB
- MySQL
- PostgreSQL
- Terraform
Where the posting names them
- Administering databases at the Linux level (Debian/Ubuntu): kernel tuning, memory allocation, storage diagnostics, and system hardening. - Automating database maintenance, monitoring, deployments, and routine DBA tasks using Ansible, Python, and Bash. - Performing occasional on-site visits to data centers in Poland and across Europe for infrastructure rollouts, recovery tests, or deep diagnostic operations.
- 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.
Nice to have - Previous MS SQL and MySQL experience. - Familiarity with Kubernetes database operators.
- 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.
- Previous MS SQL and MySQL experience. - Familiarity with Kubernetes database operators. - Experience with Terraform or Infrastructure-as-Code workflows for DB provisioning.
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
- Administering, configuring, and maintaining production PostgreSQL clusters, including streaming replication, connection pooling, and high-availability setups. - Managing distributed MongoDB environments: designing and optimizing sharded clusters, replica sets, and query routing (mongos). - Deep performance tuning and capacity planning: identifying bottlenecks, optimizing slow queries, indexing strategies, engine configuration, and OS-level storage I/O parameters.
- 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.
- Knowledge of database security, compliance, and auditing standards (data encryption at rest/in transit, TLS, NIS2, GDPR). - Relevant certifications (e.g., PostgreSQL Certified Professional, MongoDB Certified DBA). What we offer
Responsibilities - Administering, configuring, and maintaining production PostgreSQL clusters, including streaming replication, connection pooling, and high-availability setups. - Managing distributed MongoDB environments: designing and optimizing sharded clusters, replica sets, and query routing (mongos).
- 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.
- Familiarity with Kubernetes database operators. - Experience with Terraform or Infrastructure-as-Code workflows for DB provisioning. - Knowledge of database security, compliance, and auditing standards (data encryption at rest/in transit, TLS, NIS2, GDPR).
Your next step
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Demand for Data Engineer roles
New Data Engineer postings at the employers we follow are up 8% over the last 5 weeks compared with the 5 before.
Each bar is one week of new postings. The darkest bars are the last 5 weeks.
Counted from the hiring pages we’ve followed for at least five weeks, so employers we add don’t look like growth. Updated weekly.
About the role
We file this job under Data Engineer, by the work the posting describes.
Data engineers build and run the pipelines that copy data out of apps and outside services into a warehouse or lake, and fix them when a source changes or a load fails.
Expect SQL, Python, a cloud platform, a scheduler such as Airflow, and often tools for large data such as Spark or Kafka.
An analytics engineer works one step later, turning the raw data a data engineer lands into clean tables people can query.
US government figures for database architects
- Median yearly pay, May 2025
- $139,500
- Expected change, 2025 to 2035
- 9.4% more jobsagainst 3.5% for all jobs
The government has no code for data engineers, so these figures are for the closest group, database architects, which includes data integration and data warehousing specialists.
Source: US Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025) and Employment Projections (2025 to 2035). Occupation code 15-1243.
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
- Administering, configuring, and maintaining production PostgreSQL clusters, including streaming replication, connection pooling, and high-availability setups.
- Managing distributed MongoDB environments: designing and optimizing sharded clusters, replica sets, and query routing (mongos).
- Deep performance tuning and capacity planning: identifying bottlenecks, optimizing slow queries, indexing strategies, engine configuration, and OS-level storage I/O parameters.
- Designing, maintaining, and automating end-to-end backup and recovery strategies (including Point-in-Time Recovery - PITR) for both relational and document stores.
- Planning and executing regular Business Continuity Planning (BCP) and Disaster Recovery (DR) drills, failover testing, and data restoration drills.
- Administering databases at the Linux level (Debian/Ubuntu): kernel tuning, memory allocation, storage diagnostics, and system hardening.
- Automating database maintenance, monitoring, deployments, and routine DBA tasks using Ansible, Python, and Bash.
- Performing occasional on-site visits to data centers in Poland and across Europe for infrastructure rollouts, recovery tests, or deep diagnostic operations.
- Collaborating 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.
- Technical English proficiency enabling fluent cross-team communication (min. B2 level).
Nice to have
- Previous MS SQL and MySQL experience.
- Familiarity with Kubernetes database operators.
- Experience with Terraform or Infrastructure-as-Code workflows for DB provisioning.
- Knowledge of database security, compliance, and auditing standards (data encryption at rest/in transit, TLS, NIS2, GDPR).
- Relevant certifications (e.g., PostgreSQL Certified Professional, MongoDB Certified DBA).
What we offer
- 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.
Benefits
- 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.
- Access to a wellbeing platform.
- Remote work, from the office in Warsaw or from a coworking space in your city.
Employment type
Full-time
Source details
Source notes
Source excerptsSelected passages from the saved posting. Check the full description for conditions and exceptions.
- Pay
No pay amount identified in the saved description.
- Location & working pattern
Warsaw
- Automating database maintenance, monitoring, deployments, and routine DBA tasks using Ansible, Python, and Bash. - Performing occasional on-site visits to data centers in Poland and across Europe for infrastructure rollouts, recovery tests, or deep diagnostic operations. - Collaborating with development, platform, and security teams on data modeling, schema changes, and compliance.
More source context
- Access to a wellbeing platform. - Remote work, from the office in Warsaw or from a coworking space in your city. Employment type
- Work authorization
No clear work-authorization passage found. Eligibility is unconfirmed.