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

Benefits

• 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