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PHP
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PHP
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Achievement: YOLOAchievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Pull Shark

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inwall-ch/README.md

Hi, I'm Sergey 👋

PHP (Laravel) Developer

Building High-Performance Modular Systems

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🎯 What I Do

I develop production-grade backend systems with focus on:

  • Architecture: Modular Monolith, Microservices, Domain-Driven Design (DDD Lite), Clean Code Principles (SOLID, DRY, KISS)
  • Performance: Database optimization (PostgreSQL JSONB, GIN indexes, Full-Text Search), Redis caching, async queues
  • Reliability: Transactional integrity, optimistic/pessimistic locking, event-driven workflows, comprehensive testing
  • Scalability: Background job processing (Horizon), rate limiting, circuit breakers, pipeline-based data flows
  • I'm obsessed with writing code that's not just functional - but maintainable, testable, and scalable from day one

🛠 Tech Stack

PHP Laravel PostgreSQL Redis RabbitMQ Docker Nginx Linux Git CI/CD

Core & Framework

  • PHP 8.3+ (Typed properties, Enums, Readonly, Property Hooks, Pipe operator)
  • Laravel 11/12 (Eloquent, Migrations, Events, Queue, Validation)

Databases & Storage

  • PostgreSQL 15+ (JSONB, GIN indexes, Full-Text Search, advisory locks, partitioning)
  • MySQL / SQL Server (legacy experience)

Infrastructure & Tools

  • Docker (Compose, multi-container orchestration)
  • Redis (queues, caching, rate limiting, atomic operations)
  • RabbitMQ (message brokers, complex routing, polyglot communication)
  • Git / GitLab CI/CD pipelines

Code Quality & Testing

  • Pest PHP (unit, feature, integration tests)
  • Laravel Pint (code formatting)
  • LaravelStan (static analysis, type checking)
  • PHPStorm (IDE), Cursor (AI-assisted development)

Observability

  • Laravel Pulse, Sentry, Laravel Telescope, Horizon

Design Patterns & Architecture

  • GoF Patterns: Strategy, Adapter, Factory, Decorator, Observer, Command, Pipeline, Composite
  • Laravel Patterns: Actions, DTOs (Spatie/Laravel-Data), Service Providers, Observers, Jobs
  • DDD Concepts: Value Objects, Application Services, Domain Services, Aggregates, Bounded Contexts
  • Advanced: Event Sourcing (conceptual), CQRS (understanding), Optimistic/Pessimistic Locking

💼 Key Projects

Project Description Tech
Subify SaaS Subscription API Engineered a multi-tier billing system using PostgreSQL JSONB for plan snapshots. Implemented Pipeline pattern for payment processing and rate limiting via Redis.
LoyaltyHub Bonus Processing Solved concurrency issues with Optimistic/Pessimistic locking and idempotent transactions. Built type-safe DTOs using Spatie/Laravel-Data.
GeoFleet GeoFleet Real-time logistics tracking system using PostgreSQL + PostGIS for high-precision spatial queries. Built a modular monolith with Laravel Reverb (WebSockets) and Redis Geo for live map visualization and efficient proximity search.

🔄 Development Process

  • ✅ Architecture-first mindset (Bounded Contexts, Value Objects)
  • ✅ Test-driven development (Pest PHP, min. 80% coverage)
  • ✅ Code quality gates (Pint, LaravelStan, inspections)
  • ✅ Production observability (Sentry, Pulse, Telescope)
  • ✅ Conventional commits & feature branches



Open to Middle+ Laravel roles (remote). Telegram DM!

Pinned Loading

  1. subify subify Public

    SaaS subscription API featuring Pipeline Pattern, Redis Rate Limiting, and JSONB storage for flexible plans.

    PHP 2

  2. loyalty-hub loyalty-hub Public

    Bonus processing system (FinTech) featuring Optimistic Locking, Strategy Pattern for calculations, and Event Sourcing elements.

    PHP 2

  3. geo-fleet geo-fleet Public

    GeoFleet is a real-time logistics tracking system built as a modular monolith using Laravel, PostgreSQL (PostGIS), Redis Geo, and Laravel Reverb (WebSockets).

    PHP 1