Senior Database Engineer

We are seeking a Senior Database Engineer to join our team. This role offers the chance to work on complex data systems that support critical business operations at scale. You'll be part of a team that values technical depth, problem-solving, and a proactive approach to maintaining robust infrastructure. This position is well-suited for someone who enjoys tackling challenging database architecture problems and contributing to long-term system reliability.
Responsibilities
Plan Cassandra cluster deployments by estimating data volume and determining hardware requirements based on projected data size and transaction load
Set up, install, and configure new Cassandra clusters from the ground up
Employ monitoring tools to track cluster availability and overall performance
Export stored data into various formats as needed for downstream use
Apply primary and secondary indexes appropriately to enable efficient data querying
Carry out backup and restore procedures to protect the system against potential failures
Fine-tune performance settings related to the Java Virtual Machine, caching mechanisms, and compaction processes
Run stress tests against Cassandra clusters and interpret the resulting performance metrics
Requirements
A minimum of three years of hands-on, relevant professional experience
Deep knowledge of designing and building Cassandra or other NoSQL database systems
Any exposure to Astra or AWS Keyspaces platforms
Practical skill in Cassandra data modeling, NoSQL architecture design, and managing keyspaces, tables, indexes, user creation, and access permissions
Solid understanding of Cassandra's internal mechanisms, including the gossip protocol, hinted handoffs, read repair processes, and Merkle trees
Working knowledge of Linux systems and Java configuration
Familiarity with MongoDB
Understanding of tombstone management and garbage collection/purging processes
Experience administering, maintaining, and supporting clusters using tools such as Opscenter, Devcenter, Linux, and Spark
Ability to write CQL queries to support integration with Cassandra clusters
Basic experience configuring CI/CD pipelines
Solid communication skills with English fluency at a B2 level or higher, enabling clear understanding of business requirements and their translation into agentic architectures
Nice to have
Experience working with DataStax Enterprise (DSE)
Familiarity with AWS services, including at minimum Elastic Compute, S3, and IAM
Background integrating systems with Solr and Spark
Exposure to automation and CI/CD tools such as Jenkins, GitLab CI, or TeamCity
Knowledge of Terraform, CloudFormation, and Python
We offer
International projects with top brands
Work with global teams of highly skilled, diverse peers
Healthcare benefits
Employee financial programs
Paid time off and sick leave
Upskilling, reskilling and certification courses
Unlimited access to the LinkedIn Learning library and 22,000+ courses
Global career opportunities
Volunteer and community involvement opportunities
EPAM Employee Groups
Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn

Work arrangement
Yes