Denys Koronets
// whoami

Denys Koronets

Available now

Senior PHP / Node.js developer with 12+ years of building and scaling web products.

Experienced PHP and JS developer with 12+ years of expertise in backend and full-stack development, working with PHP 8.x today. Proficient in Laravel, Yii and Symfony on PHP and Express on Node.js, with strong frontend experience in Vue, Angular and modern UI libraries. Skilled in REST API design, OOP, SOLID and design patterns, building enterprise-level applications and event-driven workers on message queues, optimizing system performance, implementing crawlers and managing cloud infrastructure on AWS. Uses AI-assisted development (Claude Code) and builds AI data processing features.

12+
years in web development
35+
projects delivered
9M+
downloads on open source
~2 years
Team Lead experience (teams up to 4 people)
11
business domains
AdTech Sales tech HR tech EdTech Moving & relocation Travel Video platforms Transportation (ITS) Hardware QA Fitness SEO
// recommendation
“I managed Denys directly and he quickly became a strong asset to our engineering team. He picked up our existing code base fast and provided recommendations for how to modernize our tech stack and implement new processes. During his time here at etailinsights, he dramatically reduced our technical debt, built new revenue-generating functionality, and helped shape our product roadmap for the future. Aside from his strong technical skill set, Denys is the type of employee who takes a genuine interest in the "big picture" and long-term goals for the company. He is self-motivated to complete his tasks, but is also an excellent teammate who works well in a collaborative environment. I would also recommend Denys for a management role in the future. He was extremely helpful to me with onboarding and supporting new engineers over the last two years and demonstrated his ability to thrive in a cross-functional role.”
Rachael Love CEO, etailinsights · LinkedIn recommendation
// hire one developer

Hire me

I join your existing project or build a new one from scratch.

  • Laravel, Symfony, Node.js, Vue / Angular, AWS
  • B2B contract, usually signed within a week
  • Flexible hours, always overlapping with UTC+3
Hire me Hiring options and the suggested procedure
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// looking for a team

Build a team

I assemble a vetted PHP / Laravel team for your project within 1 month.

  • Middle and senior developers, rates from $25/hour
  • I run the technical interviews myself
  • One contract with our company, the first month is a trial
// blog

Latest posts

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Tech Debt Explained for CEOs

Tech debt is a loan your product takes when you trade quality for speed. How to track it, what to pay off first, and how much sprint time to give it.