Александр

OLEKSANDR KOCHERZHENKO
SENIOR PHP ENGINEER
Lodz, Poland • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • LinkedIn​

SUMMARY
Senior PHP Engineer with 10+ years of experience building scalable backend systems.
Specialized in Laravel and Symfony, with strong expertise in system architecture, API design, and performance
optimization.
Experienced in developing AI-powered backend systems, including LLM integrations, embeddings (OpenAI,
Cohere), and semantic search solutions using OpenSearch. Focused on clean code, scalability, and delivering
business impact.
Actively leveraging AI-assisted development tools (GitHub Copilot, Claude Code) to improve productivity and code
quality.
Experienced in building internal platforms, admin tools (Retool), and leading backend development.

TECHNICAL SKILLS
Backend: PHP, Laravel, Symfony
Frontend: JavaScript, TypeScript, Angular, Vue.js
Databases: MySQL, PostgreSQL, MongoDB, Redis
DevOps: Docker, Docker Compose
Tools: Jira, Confluence, Swagger, Postman, Figma, Retool
AI Tools: OpenAI, Cohere, GitHub Copilot, Claude Code
Testing: Unit Tests, Pest, Behat, SoapUI
Other: Git, REST APIs​

PROFESSIONAL EXPERIENCE
Tutorpeers — Software Developer (PHP/Laravel)
Aug 2021 – Present • New York, USA
• Designed and developed a scalable backend architecture using Laravel
• Built and optimized REST APIs, improving performance and response times​
• Performing task estimation and decomposition for new features and improvements
• Implemented AI-driven features using OpenSearch and embeddings (OpenAI, Cohere)
• Integrated LLM observability and monitoring tools (Langfuse)
• Developed internal admin panels and operational tools using Retool
• Contributed to system design decisions and technical improvements
• Improved development efficiency using AI tools (GitHub Copilot, Claude Code)
Onseo — Full Stack Developer (PHP/Laravel/Angular)
Feb 2021 – Aug 2021 • Kyiv, Ukraine
Evoplay — PHP Developer (Laravel)
Sep 2020 – Feb 2021 • Kyiv, Ukraine
Maryta — PHP Developer (Symfony)
Oct 2018 – Sep 2020 • Kyiv, Ukraine
Kinect.pro — Full Stack Developer (Symfony/Vue.js)
Jan 2018 – Oct 2018 • Toronto / Ukraine
Freelance Web Developer
2010 – 2014
Saycom — Software Developer (C++ / Web)
2009 – 2010 • Kyiv, Ukraine
Balaton — Software Developer (C++ / Web)
2002 – 2009 • Kyiv, Ukraine
SRS — Software Developer (C++ / Web)
2002 • Kyiv, Ukraine​

SELECTED PROJECTS
• Tutorpeers – Educational platform development (PHP/Laravel/OpenAI)
• SparkU – Educational platform development (PHP/Laravel/LLM integrations)
• Sparkz – AI Agent platform (PHP/Laravel/LLM integrations, OpenAI)
• FGA – Online school platform (PHP/Laravel/LLM integrations)
• Cashier – Online payment system (PHP/Symfony + Angular)
• Checkbox – Software fiscal device (SFD) (PHP/Symfony)
• BGBAU – Risk assessment system (PHP/Symfony)
• SMS Sending System – Scheduled messaging platform (PHP/Laravel)​

EDUCATION
Bachelor’s Degree — Information Technologies
Kirovograd State Pedagogical University