2B RPS | 30K servers | 700TB of data

HighLoad | Observability | Viability | Profitability | Mentor

• Senior Engineer for a highload observability platform processing 2B requests per second

• Influenced the strategic direction of the entire company; my service became the target solution

• Cut infrastructure resource usage by 90%, saving the company millions of dollars $

• Led integrations with 5 major business units across the organization

• Delivered full fault tolerance for the company’s most business-critical service

• Built persistent architecture with complete protection against external DDoS scenarios

• Introduced AI-assisted code review to catch basic mistakes and common issues, reducing bugs by 70%

• Successfully migrated 700TB of data with full ACID-compliant guarantees

• Presented engineering talks to a 2,000-employee company-wide audience

• Open-source contributor at highload monitoring system Statshouse

• Technical consultant. Successfully merged 70+ PRs

ATS | ML | Security | Microservices | Analytics

• Developed an ATS platform for recruiters in HR Tech, used for all hiring across the company

• Introduced ML into interview analytics and candidate evaluation for open roles, increasing hiring efficiency by 70%

• Implemented the Outbox pattern, removing Kafka message loss and reducing database load by up to 30%

• Led migration to a microservices architecture, distributing workload across 5 services

• Built a logging and analytics system on ClickHouse to improve monitoring, control, and security

• Set up storage of confidential files in a private AWS S3 bucket

• Created an Admin Panel, reducing database management time from 2 days to 5 minutes

• Presented the developed architecture solutions to a department-wide audience of 200+ people

• Led Go programming courses at a university, from beginner to middle level

• Designed and delivered a practical curriculum built around the most in-demand technologies in the industry

• Mentored 150 students throughout the program

• Created and implemented an exam system to better evaluate practical engineering skills

• Conducted code reviews, mock interviews, and technical lectures

• Helped students prepare for real hiring processes; 90% are now employed in tech roles

E-commerce | Search | ML | Performance

• Worked on product development for e-commerce in the Feed team

• Developed a custom search engine based on Elasticsearch for full-text product search

• Integrated search with the ML team’s recommendation systems

• Built hot/cold storage for search, reducing storage load by 60%

• Set up metrics and alerts, reducing incident response time from 30 to 5 minutes

• Migrated order status updates to WebSocket, improving response speed and reducing API load by 20%