Hybrid Database Engineer – NoSQL

at Trendyol Group

• Job title: Database Engineer – NoSQL
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Apache, AWS, Cassandra, Cloud, ElasticSearch, Google Cloud Platform, Kubernetes, Linux, MongoDB, Node.js, NoSQL, OpenStack, Python, Redis, Go
• Location requirements: Hybrid, Istanbul, Turkey

About the role

• Database Engineer - NoSQL responsible for designing and optimizing distributed databases at Trendyol. Collaborating closely with backend teams in a dynamic tech environment.

Responsibilities

• Design, deploy, and optimize distributed databases such as Elasticsearch, Redis, Cassandra, Couchbase, and MongoDB to support real-time, large-scale workloads.
• Take ownership of database operations across the full lifecycle, including capacity planning, replication, backup/restore, disaster recovery, and version upgrades.
• Proactively improve reliability through automation and observability tooling.
• Collaborate closely with backend teams to investigate performance issues and resolve production incidents.

Requirements

• Extensive experience (5+ years) in administering and optimizing NoSQL systems under production workloads, ensuring reliability, scalability, and efficiency.
• Hands-on experience with at least three of: Elasticsearch, Redis, Cassandra, Couchbase, MongoDB.
• Deep understanding of NoSQL consistency models, CAP Theorem, cluster design, replication and sharding.
• Proficiency in Linux systems, kernel/OS tuning, and scripting (Bash, Python, Go).
• Experience operating high-throughput, multi-node NoSQL systems in production.
• Proficiency in managing backup & recovery, version upgrades, patching, and performance tuning across key NoSQL platforms including Elasticsearch, Redis, Apache Cassandra, Couchbase, and MongoDB.
• Deep expertise in analyzing and optimizing query performance, indexing approaches, and data partitioning across NoSQL systems like Elasticsearch, MongoDB, Couchbase, and Cassandra.
• Strong troubleshooting and root-cause analysis skills, excellent documentation, teamwork and good communication skills.
• Experience with geo-redundant database deployments (active/active, active/standby).
• Hands-on experience running stateful database workloads on Kubernetes, especially Elasticsearch, Redis, Couchbase.
• Solid understanding of StatefulSets, PVCs, StorageClasses, and Pod Disruption Budgets in the context of database reliability.
• 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.
• Public cloud management is a plus (AWS, GCP).
• Highly adaptable with the ability to work in a fast-paced demanding environment.

Benefits

• 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.