10/10/2026 updated
100 % available
Lead Software Engineer & Data Engineer | Apache Cassandra | AWS | Oracle
Minsk, Belarus
Worldwide
B.Sc. Mathematics, Belarusian State UniversityAbout me
Lead Software & Data Engineer with 19+ years building and operating production data platforms. Hands-on expert in Apache Cassandra, Oracle and AWS. I design clusters, backup/DR, monitoring and automation so systems stay reliable, cost-efficient and easy for teams to run independently.
Server ClusteringLinuxDevOpsLinux AdministrationOracle Business Intelligence Enterprise EditionAnsiblePrometheusSQL DatabasesBackup and RestoreMonitoring ResultsHigh Availability ClustersApache CassandraOracle 10g/11gGrafanaCloudformation
Apache Cassandra
Expertise in architecting and operating Apache Cassandra clusters on Linux, including backup and recovery with Medusa and Ansible, as well as GitLab CI/CD pipelines. Hands-on experience with capacity planning, monitoring and high-availability setups.
AWS Cloud Services
Hands-on experience with AWS EKS, EFS, AWS Backup, Keyspaces capacity planning, KMS encryption and key rotation. Deployment of CloudWatch dashboards via CloudFormation and optimization of AWS costs.
Oracle & SQL/PL/SQL
Deep knowledge of Oracle database technologies including Oracle Financial Services, ODI, and Oracle BI. Delivery of PL/SQL packages, data transformations, integrations with external systems, and complex SQL tuning.
Grafana & Prometheus Monitoring
Setup and operation of Grafana and Prometheus monitoring stacks including SQL Exporter on Kubernetes for production data platform observability.
Kubernetes
Deployment and management of containerized workloads on Kubernetes, including monitoring components and AWS EKS environments.
Ansible & GitLab CI/CD
Automation of infrastructure and deployment workflows using Ansible playbooks and GitLab CI/CD pipelines for database operations and backup processes.
Python
Use of Python for scripting and automation tasks within data engineering and platform operations contexts.
Backup & Disaster Recovery
Design and implementation of backup and disaster recovery strategies for production data platforms, including Medusa-based solutions for Apache Cassandra.
Data Modeling & BI
Modeling of databases and data marts using CA ERwin, as well as delivery of BI solutions including MDM, Excel reporting, and depository/securities analytics.
Couchbase
Practical experience with Couchbase clusters, including improvements to availability.
DataStax Astra DB
Experience with data loading and working with DataStax Astra DB.
Experience
Professional experience10+ years
Freelancer since2026
Languages
EnglishFluentRussianNative speakerBelarusianNative speaker
Project history
Architected and operated production Apache Cassandra clusters on Linux. Implemented backup and recovery with Medusa and Ansible, built Grafana/Prometheus monitoring (including SQL Exporter on Kubernetes), and delivered AWS solutions (EKS, Keyspaces, KMS, Backup, CloudFormation). Improved availability, automated processes with GitLab CI/CD and optimized cloud costs.
Led a team of 5 and acted as system architect on a banking management-accounting platform (Oracle Financial Services, ODI, Oracle BI). Delivered PL/SQL packages, data transformations and integrations with external systems. Modeled databases and data marts in CA ERwin and tuned complex SQL queries.
Developed a VAT refund application using Delphi and Oracle 10g. Created database packages, reports and supporting logic for the system.