Golang Backend Engineer

Built and optimized FoodTech backend capabilities for a platform with more than 12,000 monthly users and 5,000 monthly orders. Split seven business-priority tiers between PostgreSQL aggregation and maintainable Go rules with pagination, making the first page twice as fast while orders increased by 30% after rollout.

Developed a referral cashback system with a 60/40 customer-referrer split that contributed to 25% month-over-month growth in new users. Built courier scoring using live coordinates, load, distance, detour, and bundle potential, reducing customer wait time by 10 minutes compared with third-party delivery.

Added black-box and end-to-end tests for ranking and critical flows. Implemented Prometheus and Grafana monitoring with Telegram alerts.

Extended Kafka-based workflows for accounts, data synchronization, notifications, and host verification, with MongoDB used for persistence.

Moved email, SMS, and push notifications to a consumer service to isolate external failures, accepting eventual consistency as a trade-off. Used gRPC and Protobuf and configured CI/CD access for Kafka and S3.

Built approximately 80% of a configurable PDF pitch-deck analyzer that generated structured slide-level scores and recommendations, increasing engagement by around 20%.

Tuned prompts and response formatting for a Gemini-based assistant using Typesense semantic retrieval. Returned profile links across several thousand records and reduced incorrect answers by 70%.

Integrated Stripe and S3 to deliver the company's first online-payment and file-management workflows.

Automated Excel reporting with Python, improving reporting speed by approximately 30%. Maintained Flask and C# national and international statistics websites and represented data work at meetings in Korea, Serbia, and Russia.

Produced information-security documentation as a cybersecurity specialist. Delivered cyber-hygiene training to more than 100 regional staff members.

Built NFT resale flows with profit-distribution logic for a digital exchange product.

Tested Go backend services and Solidity smart contracts, identifying critical defects before launch.

Bachelor of Science in Informatics and Computer Engineering.

Completed Python and Java web development courses. Received Gold Certificate and Best Project awards.