Andrii K.

Senior Full-Stack Engineer | Laravel & Symfony | AWS & Rust Microservices Expert Software Engineer with 5+ years of experience in high-performance web development. I am a Full-Stack developer with a deep background in architecting and maintaining complex software systems. My expertise spans the entire development lifecycle, from designing robust backend architectures in PHP, Go, and Rust to deploying and managing scalable infrastructure on AWS. 🛠 Core Expertise: Backend Mastery: Advanced proficiency in PHP (Laravel 7-12, Symfony 4-6, Yii2), Go, and Python. Experience in refactoring performance-critical components into Rust microservices and implementing asynchronous processing with PHP Fibers. Infrastructure & Cloud: Skilled AWS Builder (EC2, RDS, S3). Proficient in Terraform, Docker, and CI/CD pipelines (GitHub Actions) for automated and reliable deployments. Modern AI & Search: Implementation of RAG (Retrieval-Augmented Generation) + SQL strategies, Vector search (PostgreSQL Vector), and integration of LLMs (Gemini, Llama, GPT). Data Management: Extensive experience with PostgreSQL, MySQL, Redis, MongoDB, and the ELK stack (Elasticsearch, Logstash, Kibana, OpenSearch). Frontend & E-commerce: Building modern interfaces with React, Next.js, and Vue.js. Experience with Shopify, Sylius, and WordPress. 🚀 Key Project Experience: B2B Booking Solutions: Architected multi-tenant hotel booking systems, integrating complex APIs from global providers (Expedia, Oracle, Hilton, HotelTrader). High-Traffic APIs: Designed and optimized RESTful APIs for high-load environments, focusing on SOLID principles and clean code. System Migrations: Leading migrations of legacy systems to modern frameworks (Symfony/Laravel) to ensure long-term maintainability and performance. 💡 My Approach: I focus on delivering high-quality, scalable code that solves real business challenges. Whether it's optimizing complex database queries, implementing advanced search logic, or managing cloud infrastructure, I ensure that the solution is robust and future-proof.