Sergey V. Email & Phone Number

• Ethereum blockchain events real-time processing.• Backend development: Crypto/Blockchain Ethereum ERC20-like chain data export and analysis, ETL. Python, Clickhouse, RabbitMQ, Redis Timeseries, Kubernetes, Helm, Grafana.• Optimized Clickhouse performance.• Developed Clickhouse migration backward compatibility testing CI pipeline.• Introduced code quality guidelines. Added linters and static checkers to CI.• Refactored large codebase and improved dependency management.

Moscow, Russia

• Distributed auto-scalable DBMS product development, feature design and description, automated version upgrade/downgrade concept design, technical documentation writing, dev team management (4 people), Rust lang.• Designed, developed, tested for performance a pre-sale prototype of a scalable distributed message queue system based on Tarantool DB: KV search + priority, low-latency, 20M RPS RW, sharding, replication, high availability, HTTP JSON RPC.

Moscow, Russia

• Designed, developed and integrated a corporate-level a “Database as a Service” platform for auto-managing of databases’ configuration and lifecycle with a set of Kubernetes multi-cluster operators, backend services and tooling for the DBAs and developers. Multi-datacenter replication and high availability for PostgreSQL, MongoDB, Tarantool, Redis.• Designed, developed and integrated a corporate-level a global database service discovery system: multiple datacenters, multi-cluster Kubernetes, Consul, custom Kubernetes Operators + backend + client-side automated proxying tools.• Took part in designing the corporate-standard Python microservice SDK and framework with built-in DI, RPC, Request Schema Validation and database service discovery using Starlette, Pydantic, AsyncIO. It came out similar to FastAPI before FastAPI got popular.• Developed and integrated for production usage an open source automated sharded database management tool for Tarantool: https://github.com/bofm/tarantool-autovshard.• Developed and integrated for production usage a Kubernetes operator to support automated replication and high availability of Redis databases running in Kubernetes.• Designed and developed a scalable database monitoring system backend.• Consulting on efficiency and failure prevention of microservices interacting withdatabases.• High-load business-critical microservices development.• Designed and integrated a process and rules of working with databases at thecorporate level.

Moscow, Russia

Designed, integrated and supported a crash report and telemetry storing, batch processing and reporting system: Python microservices, RabbitMQ, MongoDB, ElasticSearch, Kibana.

Moscow, Russian Federation

• Oracle Database consultant (Exadata, 11g RAC+Standby, DWH, VLDB 25TB+)• expertise on databases architecture, security and performance• designing a distributed cross-continental infrastructure of more then 40 databases• designing databases' security model and methods of security compliance checking• developed the system of safe code changing and testing (sandbox)• software deployment automation

Moscow, Russian Federation

Duties• administration of a distributed heterogeneous processing system 24/7 (Oracle Database 9i-10g-11g OLTP, Partitioning, Advanced Replication Multi-master, Streams, Data Guard, HS, Gateway)• performance tuning• designing replication system• database servers administration (Linux OEL, RHEL, Windows Server)• administration of storage and virtualization systems (VMWare, HP EVA)Achievements• created a private cloud for development environments (KVM, base images + copy-on-write)• implemented advanced storage based backup and recovery policy• migrated databases to VMWare and KVM with no downtime• significantly reduced end of day calculations duration• successfully passed Sarbanes-Oxley (SOX) compliance audit of IT systems