Full-stack web developer and 1st-year Master's student.
I build practical systems with clear architecture, containerized environments, and production-style APIs.

• Event-driven webhook processing platform (work project, private)
  • Purpose: ingest webhooks from multiple sources and deliver normalized events into a CRM
  • Architecture: microservices + event streaming (Kafka), event-sourcing approach
  • Stack: NestJS, Node.js, Docker, GitHub Actions (CI/CD), Next.js (internal UI), ELK for observability
  • Load test results: ~830 webhooks/sec ingestion, ~400 webhooks/sec delivery (CRM outbound)
  • Ownership: designed, implemented, tuned, and load-tested end-to-end

• avalanche-wms — Blockchain-backed Warehouse Management System with an auditable, on-chain history of warehouse operations. University project #2340, defended June 2026.

  • Go WMS core + a dedicated ledger-adapter service mirroring warehouse events on-chain (outbox pattern — no dual-write)
  • CDC pipeline: PostgreSQL → Debezium → Kafka → ledger-adapter → smart contract
  • On-chain layer: Avalanche Subnet-EVM + Solidity (BatchMappingWMS) — selected over Hyperledger Fabric for EVM-native tooling and a reproducible, fully-containerized testnet
  • Geo-distributed validator network across 3 countries (🇲🇩 🇷🇴 🇳🇱) under real BFT consensus — survives a validator going down (2-of-3 still finalizes)
  • Load- & stress-tested end-to-end — sustained ~1,900 events/sec with zero message loss on full-backlog drain (detailed throughput/latency reports in the repo)
  • Frontend: React 19 + TypeScript (Vite, Feature-Sliced Design, shadcn/ui + Tailwind, Zustand)
  • Docker Compose for local bring-up · GPLv3

• web3wms — earlier prototype of the same idea (MVP iteration).

  • Microservices over REST + RabbitMQ, MongoDB per-service storage
  • On-chain audit via Ethereum (Ganache) + smart contracts
  • Frontend: Next.js + Mantine UI

• Project #2340 — “Blockchain-based warehouse accounting system” — project card · code: avalanche-wms
  • Goal: a functional prototype of a blockchain warehouse-accounting system to improve reliability and transparency of stock records
  • Delivered: smart-contract coverage of the warehouse flow (receiving · putaway · picking · shipping), a blockchain integration service, and a web UI
  • Platform decision: Avalanche Subnet-EVM chosen over Hyperledger Fabric (EVM tooling, reproducible container-native testnet, geo-distributed validators)
  • Defended within the 2026-06-08 – 2026-06-19 window

• Smart-contract layer (BatchMappingWMS — warehouse-flow state on-chain) + application layer (Go services, CDC/outbox) + UI layer (React)
• Event path: warehouse action → PostgreSQL → Debezium CDC → Kafka → ledger-adapter → Subnet-EVM
• Tech: Go, TypeScript / React, PostgreSQL, Kafka, Avalanche Subnet-EVM

Backend: Go, Node.js, NestJS, Express
Frontend: TypeScript, React, Next.js, Vite, shadcn/ui, Mantine UI, Tailwind
Databases: PostgreSQL, MongoDB
Messaging / streaming: Kafka, Debezium (CDC), RabbitMQ
Blockchain: Avalanche Subnet-EVM, Solidity, Ethereum (Ganache for MVP)
Infrastructure: Docker, Docker Compose, GitHub Actions
Observability: ELK

• Telegram: https://t.me/ll_ogl
• Email: oglenyaboss@icloud.com