leqqrm

Led backend, DevOps, and QA delivery for migrating an Oracle/SAP-based procurement platform from monolith to Rust microservices. Led a team scope of about 25-30 people, with about 12 direct backend reports; DevOps and QA were managed via team leads, and frontend work was coordinated through APIs. Delivered about 20 services across domain and platform utilities such as logging, email, and shared components. Designed per-service databases with PostgreSQL, Redis caching, RabbitMQ async integration, and forward-only schema migrations. Built GitLab CI/CD with GitOps, reproducible builds, release tagging, and rollback practices; supported daily deployments across dev, stage, and release stands. Expanded QA automation and API regression coverage; reduced the test pipeline from about 30 minutes to about 5-7 minutes via parallelization and test isolation. Implemented compliance-ready delivery with regulated Linux distributions, a private artifact registry with pinned approvals, dependency scanning (cargo-audit) as a CI gate, and customer security reviews. Defined SLI/SLO targets, MTTR tracking, and error-budget practices when services stabilized, prioritizing delivery reliability and security. Stack: Rust, Actix Web, RabbitMQ, PostgreSQL, Redis, Docker, GitLab CI/CD, Odoo, Grafana, Sentry, Swagger, Telegram Bot API, Mattermost, Clippy, cargo-audit, SonarQube.

Backup appliance with deduplication. Led delivery of core product components and owned key architecture decisions for storage and restore. Established team engineering practices: planning, reviews, quality standards, CI/CD, and automated testing to improve release predictability. Mentored engineers and supported Rust adoption for former C++ developers through training and guidelines. Owned performance and reliability outcomes: RocksDB and storage tuning, performance testing, incident analysis and root cause fixes. Improved operational readiness via metrics, alerting, and clear documentation and runbooks.

Supported and extended a production blockchain voting service on Exonum, prioritizing improvements from user feedback. Added weight-based voting, streamlined ballot flows, and raised unit and integration test coverage. Simplified pipelines during a migration to Microsoft tooling and led refactors to keep the stack current. Stack: Rust, Exonum, Protobuf, Serde, Git.

Built brokerage automation on MT4 and MT5 APIs. Delivered trade copiers in C++ and Go and a Multi Account Manager. Designed services to normalize and stream trading data with real-time guarantees. Built data collectors for statistical analysis. Stack: MSVC, CMake, Protobuf, gRPC, NATS, YAML, PostgreSQL, Vcpkg, Git.

Developed CAD libraries for KOMPAS. Built a Change View Plane feature for 3D workflows. Introduced an automated C++ and Python testing framework that reduced manual QA work. Led a refactor to C++17. Moved the organization from SVN to Git. Set up Scrum and documentation standards. Stack: MSVC, C++17, Python 3, Boost, PostgreSQL, Git, Jenkins.