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Achievement: Pair Extraordinairex2Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

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dionisvl/README.md

Denis Dudin - Software Engineer

Stack Overflow Telegram

Senior Software Engineer - Go, PostgreSQL, distributed systems. 8+ years in backend, 6+ of them writing commercial Go. I build the core of high-load client-server systems: REST/gRPC APIs, event-driven microservices, and payment processing where correctness under failure actually matters.

Deep in Go concurrency, distributed reliability, payment flows.
Effective across infrastructure, observability, and the frontend when a feature needs it.

  • Go services: worker pools on goroutines/channels, WebSocket, CQRS, graceful shutdown
  • Reliability: FSM for transaction states, idempotency, retries, webhook/callback handling
  • PostgreSQL, Redis, event pipelines with Kafka / RabbitMQ, CDC via Debezium
  • Observability: OpenTelemetry, Jaeger, structured logging, health-check tooling
  • Docker, Kubernetes/Helm, Traefik, CI/CD
  • Long-term production background in PHP / Symfony, incl. legacy modernization

📫 dionisvl3@gmail.com · Telegram · Open to Senior Backend roles.

Selected work

  • my.go.chat - production-style WebSocket chat in Go. One writer goroutine per connection to avoid concurrent writes, buffered broadcast channels so slow clients can't block the hub, go test -race, embedded goose migrations and graceful shutdown. Go 1.26 · pgx/v5 · chi · slog.

  • avi - classifieds marketplace, Go API + Next.js frontend. CQRS, JWT auth, WebSocket chat, S3-compatible storage, payments, i18n. CI runs format, lint, build, test and Swagger validation. Playwright E2E.

  • my.OpenTelemetry-Jaeger-example - distributed tracing across Go and PHP services with Jaeger.

  • my.k8s_12factor_app - 12-factor app on Kubernetes with Helm. (K3s variant)

  • my.debezium.example - real-time MySQL → PostgreSQL replication via Debezium CDC.

  • my.blog - Symfony content platform with legacy Laravel code isolated behind boundaries during modernization.

Stack

  • Core - Go · PostgreSQL · Redis · Kafka · RabbitMQ · gRPC
  • Infra - Docker · Kubernetes · Helm · Traefik · Nginx · CI/CD · AWS
  • Observability - OpenTelemetry · Jaeger · Grafana · structured logging
  • AI-assisted engineering - MCP servers · agent workflows · local LLMs · Claude Code in daily workflow
  • Also - PHP · Symfony · Laravel (long-term production)
  • Frontend when a feature needs it - TypeScript · Next.js · Nuxt · Svelte

Previously: Web3 - Ethereum smart contracts, NFT platforms, crypto payment integrations.

Pinned Loading

  1. my.go.chat my.go.chat Public

    Production-style WebSocket chat service in Go with PostgreSQL, migrations, Docker, and CI.

    Go

  2. avi avi Public

    Demo classifieds marketplace: Golang API + Frontend NextJs, admin panel, Traefik, Postgres, Docker Compose

    Go

  3. my.k8s_12factor_app my.k8s_12factor_app Public

    Amazing 12-Factor K8s Best Practices: Hello World App

    Makefile

  4. my.OpenTelemetry-Jaeger-example my.OpenTelemetry-Jaeger-example Public

    It is a simple demo to show how to use OpenTelemetry with Jaeger in Golang and PHP that generates traces spans and sends them to Jaeger.

    PHP

  5. go-uuid-inspector go-uuid-inspector Public

    Go web service for inspecting UUID formats, versions, variants, and time-based timestamps.

    Go

  6. my.blog my.blog Public

    Symfony content/admin platform with legacy Laravel code isolated during modernization.

    PHP 2