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igorynos/README.md

👋 Hi, I'm Igor Sapozhnikov

🚀 Go Backend Developer | Payment Systems | Distributed Applications

Go Backend Developer with 6 years of professional experience building backend services, payment infrastructure, and distributed systems. I focus on reliable transaction processing, asynchronous workflows, service integrations, and maintainable business logic.

  • 💳 Payment flows and provider integrations
  • 📨 Kafka, RabbitMQ, and background processing
  • 🗄️ PostgreSQL, ClickHouse, Redis, MySQL, and MongoDB
  • 🐳 Docker, Kubernetes, Linux, CI/CD, and observability
  • 📍 Armenia · Open to remote opportunities

🌟 Featured Go Projects

🔐 ElacLicense

License-management backend with PostgreSQL, JWT authentication, vendor-level data isolation, and GOST 28147 key generation.

📡 TeleRadar

Event-driven Telegram routing service using RabbitMQ, PostgreSQL deduplication, authenticated webhooks, and configurable content filters.

🔔 RTNotifier

Payment monitoring worker with PostgreSQL analytics, Redis-based duplicate protection, scheduled triggers, and Telegram alerts.

🤝 SplitMate

Shared-expense backend with PostgreSQL persistence and deterministic debt settlement using integer monetary arithmetic.

🖥️ DSU

Network controller utility with UDP discovery, binary protocols, configuration commands, boot control, and reliable firmware upload.

🛠️ Technology Stack

Area Technologies
Language Go
Backend & API REST, gRPC, chi, SQL
Data PostgreSQL, ClickHouse, Redis, MySQL, MongoDB
Messaging Kafka, RabbitMQ
Infrastructure Docker, Kubernetes, Linux, GitLab CI/CD, GitHub Actions
Observability Prometheus, Grafana, ELK
Testing Go testing, Testify, race detector

📫 Contact

Popular repositories Loading

  1. igorynos igorynos Public

    Go Backend Developer portfolio — distributed systems, payment infrastructure, PostgreSQL, Kafka, and RabbitMQ

  2. DSU DSU Public

    Network controller discovery, configuration, boot control, and firmware utility in Go

    Go

  3. RTNotifier RTNotifier Public

    PostgreSQL payment monitoring worker with Redis deduplication and Telegram alerts

    Go

  4. tele-radar tele-radar Public

    Event-driven Telegram routing service with RabbitMQ, PostgreSQL, and deduplication

    Go

  5. SplitMate SplitMate Public

    PostgreSQL-backed shared-expense and deterministic debt-settlement service in Go

    Go

  6. ElacLicense ElacLicense Public

    PostgreSQL-backed license management API with JWT and GOST 28147 key generation, built in Go

    Go