• Integrated Machine Learning components into the Kubernetes operator, enabling users to save up to 30% costs when running ML tasks on their on-prem deployment.
• Proposed the design and implemented a tool for migrating on-prem installations to managed cloud solution, allowing to convert more clients to paying customers.
• Initiated and accomplished the redesign and rearrangement of Operator documentation to eliminate duplication and make it more user-oriented.
• Automated the creation of OpenAPI validation schemas for Kubernetes CRDs, reducing manual efforts.
• Come up with an idea and upgraded the “DC to DC cluster synchronization” tool to use a newer version of DB-driver resulting in more robust and memory-efficient communication between components.
• Established unified approach for PR checks and CI/CD pipelines for all five main Golang projects, increasing code quality and speeding up the release cycle.
• Optimized leader election mechanics for Go projects, utilizing a new polling API to reduce resource consumption and lower the load on DB servers.
• Initiated the addition of automatic security vulnerability scanning for all five Golang projects using govulncheck, enhancing the security of built artifacts.

• Working mostly on server-monitoring software, I managed to refactor legacy code while optimizing the performance of metrics collection.
• Designed and built a novel tool to set up remote tunnels to servers in security-tightened environments. Acquired by RealVNC.
• Established CI/CD pipelines, packaging and delivering binaries (deb, rpm, windows), saving 10 human hours monthly.
• Suggested and implemented async job execution and monitoring, empowering customers to track metrics and create alerts for scheduled tasks.

Gained experience in communicating with stakeholders, gathering requirements, and resolving conflict situations.

At the same time, created many projects in different fields, broadening my skill set: Docker Volume Plugin for LVM, Suppliers ordering system (Node.js, Go), High-performance web-crawler (Go), Mattermost plugin (Go), and others involving Kubernetes, nginx, Linux, CI/CD, and Protobuf.

• Delivered lectures on Database Programming & Information Retrieval, Software Development Management (Agile & Scrum), and an introductory course for first-year students. Over 80% of attendees are now employed in international companies.
• Organized multiple nationwide Olympiads in informatics using open-source software.

• Mentored newcomers and spoke at internal meetups; four of my five mentees secured permanent contracts.
• Led a small team to integrate the Webinars platform (WebRTC), boosting upsell for existing customers.
• Designed the ‘Webinar Recording’ feature, enabling the saving of sessions in a playable format.
• Automated the release process using TeamCity and Fabric, saving ~20 human hours monthly.
• Optimized a permission access system for served files (OpenResty+Lua), leveraging Redis-stored permissions to significantly reduce response time.
• Designed and implemented iSpring Content Library backend, powering the “Content Library” feature.
• Developed backend .NET service for OS-independent processing of MS Equation files.
• Rewrote hundreds of test cases using Codeception, adding E2E tests, and reducing escaped defects.
• Optimized backup tool for main product sites, significantly speeding up the process.
• Reworked the hierarchical permissions system for shared files access using closure-table approach which resulted in higher RPS and lower resource usage.
• Implemented video transcoding using AWS Elastic Transcoder / SNS / S3, reducing infrastructure costs.
• Enhanced in-browser data recovery system for user statistics, reducing data loss.
• Implemented full-text search using Sphinx, enhancing user satisfaction.