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  • Almaty, Kazakhstan
  • 07:35 (UTC +05:00)

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AndrewGalak6578/README.md

Andrew Galaktionov

PHP/Laravel Backend Engineer focused on payment systems, integrations, queues, webhooks and transactional backend workflows.

I build backend systems where reliability matters: payment lifecycle, state transitions, idempotency, retries, timeouts, settlement logic, wallet integrations and API-based operations.

Core stack

  • PHP 8+
  • Laravel
  • REST APIs
  • Jobs / Queues
  • Events / Listeners
  • Redis
  • PostgreSQL / MySQL
  • Docker / Docker Compose / Laravel Sail
  • Linux CLI
  • Nginx + PHP-FPM
  • Git / GitFlow
  • Python for bots and service logic

Main focus

  • Payment APIs
  • Transactional backend systems
  • API integrations
  • Webhooks
  • Queue-based processing
  • State machines
  • Retry logic
  • Idempotency
  • Settlement flows
  • Internal operations systems
  • High-reliability backend workflows

Featured project

Settlane — Multi-Asset Invoice & Settlement Gateway

Settlane is a production-oriented portfolio project for crypto invoice and settlement infrastructure.

It demonstrates backend architecture for transaction-heavy products: hosted checkout, merchant/admin portals, invoice lifecycle, signed webhooks with retries, wallet allocation, balances, settlement ledger, forwarding flow, role-based access control and queue-based processing.

Key backend areas:

  • Laravel API for merchant/admin operations
  • Hosted invoice checkout flow
  • Multi-asset payment logic
  • BTC / LTC / DASH UTXO payment paths
  • EVM / ERC-20 technical paths
  • Invoice state machine
  • Signed webhooks with retries
  • Settlement ledger and forwarding records
  • Merchant balances and fee handling
  • API keys, roles and permissions
  • Dashboard metrics and operational views
  • PHPUnit tests for critical backend flows

Stack:

  • Laravel 12
  • Vue 3
  • PostgreSQL
  • Redis
  • Docker Sail
  • Queue Jobs
  • Webhooks
  • UTXO / EVM / ERC-20 technical paths
  • Local EVM demo with Anvil + MetaMask

Live demo: https://settlane.tech Repository: https://github.com/AndrewGalak6578/crypto-payment-gateway

The project is built as a near-production backend MVP. It focuses on architecture, payment lifecycle, integration reliability and operational backend flows.

Experience area

I’m interested in backend roles related to:

  • fintech
  • banking
  • payment infrastructure
  • crypto exchanges
  • iGaming
  • internal operations systems
  • integration-heavy backend products

Contact

LinkedIn: https://www.linkedin.com/in/andrew-galaktionov Telegram: @andrewgalak6578

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    Portfolio MVP of a multi-asset invoice and settlement gateway built with Laravel, Vue, PostgreSQL, Redis and Docker.

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