I am a Backend Engineer with 5 years of experience in fintech, including payment systems, anti-fraud solutions, and high-load notification services.
Strong background in refactoring legacy codebases, improving reliability, and aligning backend architecture with business domains (DDD).
Focused on translating business processes into clear, maintainable, and scalable backend solutions.
- Fintech Startup (2023 - Present) — PHP Developer
- Bank (2023) — PHP Developer
- Service Sector Startup (2022 - 2023) — PHP Developer
- Payment System Company (2021 - 2022) — Software Developer (Perl, PHP)
- QA & PHP Intern (2019 - 2021) — QA Engineer
- University Research Project (2017 - 2018) — Python / Linux Developer Intern
- Languages: PHP (7.4 - 8.4), Perl, Python, SQL
- Frameworks & Architecture: Symfony, Laravel, Yii, Laminas (Zend), DDD, Clean Architecture
- Databases, Caching & Queues: PostgreSQL, MySQL, Redis, RabbitMQ
- DevOps & Tools: Docker, CircleCI, AWS, OpenSearch, Git, Linux (Ubuntu/Debian)
- Testing: PHPUnit, Laravel Dusk (E2E testing)
- Frontend (Basic): JavaScript, Bootstrap
- Concepts: P2P, WebRTC, Cryptography (PGP), REST API, Microservices
PHP library for post-quantum cryptography, protecting data against future attacks from quantum computers. It provides NIST-standardized ML-KEM (Kyber) key encapsulation and ML-DSA (Dilithium) digital signatures. The library uses FFI bindings to liboqs, so no PHP extension compilation is required — just install it via Composer. It also ships a ready-made hybrid encryption class (ML-KEM + HKDF + AES-256-GCM) for encrypting real-world data. The project is covered by PHPUnit tests and is well suited both for learning post-quantum cryptography and for experimenting in real PHP applications.
- Tech Stack: PHP 8.1+, FFI, liboqs, PHPUnit, ML-KEM / Kyber, ML-DSA / Dilithium, HKDF, AES-256-GCM , Composer.
🔗 Shorty
Link shortening service. Fully Dockerized environment. Full E2E testing and documentation.
- Tech Stack: PHP 8.x, Laravel, MySQL, Docker.
A secure, serverless messenger utilizing PGP keys for user authentication instead of traditional accounts or phone numbers.
- Architecture & Features: Real-time video/audio communication, fully Dockerized environment, custom lightweight signaling server.
- Tech Stack: WebRTC, PGP Cryptography, Docker, Signaling Server Repo, Web Client Repo, Dockerized Environment Repo, Desktop Client Repo.
- 🥋 Codewars Profile — algorithmic problem-solving and code optimization practice.