Senior Database Engineer - RDBMS

About the TeamAt Trendyol Tech, our mission is to create a positive impact in our ecosystem by enabling commerce through technology.We solve complex problems with data, creativity, and agility — always driven by real outcomes. With a culture built on learning, collaboration, and ownership, we grow together while building what’s next.
About the RoleAs a Senior Database Engineer at Trendyol, you will be responsible for ensuring the availability, performance, and reliability of our mission-critical database systems. You will proactively manage and optimize PostgreSQL environments, handle capacity planning, backups, replication, and high-availability operations, while driving automation through Infrastructure as Code. Working closely with cross-functional teams, you will support application development with efficient schema design, query optimization, and release management. As a senior member of the team, you will also mentor junior engineers and drive best practices in database management.

Responsibilites

• Day to day duties for proper database maintenance along with proactive measures to maximize the database availability and performance.
• Manages database capacity planning process.
• Provides a single point of contact related to DB operations and triage incoming requests.
• Automate repetitive tasks and manual processes through infrastructure code (IaC).
• Strong knowledge in software development, build, release and code analysis and DevOps tools such as Git, Ansible, Terraform.
• Actively monitor the database layer for health and capacity and take corrective actions as needed.
• Configuration control and release management for stored procedures and applications that wish to connect to the database.
• Handle backups, restores, and HADR operations.
• Available in rotation on-call for critical event handling.

Expected Qualifications

• 5+ years administering production, always-on, high throughput, OLTP RDBMS on PostgreSQL.
• Proficiency in PostgreSQL backup & recovery, upgrade, patching, replication, and performance tuning.
• Proficient in HA and DR technologies such as SQL Always-on, SQL Clustering, log-shipping, Mirroring, Transactional replication, Load Balancing.
• Advanced knowledge of schema modeling, SQL query execution, execution analysis & optimization, indexing strategies, partitioning.
• Solid Linux fundamentals including kernel and OS tuning, as they relate to DB performance and security.
• Strong troubleshooting and root-cause analysis skills, excellent documentation, teamwork and good communication skills.
• Experience with DevOps tools (Git, Ansible, Terraform) and monitoring (Prometheus, Grafana, Alertmanager).
• Experience in scripting & automation programming languages such as Go, Python, Bash, Powershell.
• Experience designing patterns, system architecture and implementing best practices.
• Experience with geo-redundant database deployments (active/active, active/standby).
• Hands-on experience running stateful database workloads on Kubernetes, especially PostgreSQL.
• Solid understanding of StatefulSets, PVCs, StorageClasses, and Pod Disruption Budgets in the context of database reliability.
• Ability to manage and troubleshoot Kubernetes-native PostgreSQL backups, failovers, and rolling upgrades.
• Responsible for planning and executing SQL Server to PostgreSQL database migrations, ensuring smooth transitions with minimal downtime and ensuring data integrity.
• Providing overnight and off-hours support as part of a support team.
• Experience in Kubernetes is a plus.
• Working with OpenStack or VCloud infrastructure is a plus.
• Proficiency in administering PostgreSQL database servers running on cloud providers is a plus.
• ​​Highly adaptable with the ability to work in a fast-paced demanding environment.

What We Offer- Hybrid working model with flexibility: a schedule that helps you find the right balance between flexibility and team bonding, including work-from-abroad opportunities and a summer working model.- Customisable FlexBenefits budget: Adjust your daily meal allowance, choose your health insurance package (and extend it to your spouse or children), and pick from additional benefits like fuel support or Trendyol shopping credits.- Well-being support: Access to location-based in-house doctors, as well as psychologist and dietitian support, and HPV vaccination provision.- Personalised training allowance and learning opportunities: Use your annual budget for any training or conference of your choice, explore our Learning Management System (LMS) anytime, and join in-person learning sessions offered throughout the year.- Responsibility from day one: Take full ownership from the start in a culture where every voice is heard and valued.- A diverse, international team: Collaborate with global peers across our offices in Berlin, Amsterdam, Dubai, and beyond, in a startup-spirited and collaborative environment.- Opportunities to grow with the best: Tackle meaningful challenges, develop through hands-on experience, and grow with the support of expert guidance and global mentoring.- Meaningful connections beyond tasks: Be part of team rituals, events, and social activities that help us stay connected and inspired.
Take the Next StepIf this role excites you, apply today, we look forward to taking the next step with you.Want to get to know the team better first? Explore our Career Website, LinkedIn, or YouTube to learn more about #LifeatTrendyol and how we work.