I’m a Senior Web Developer and Tech Lead with over 20 years of experience crafting high-load, real-time web applications and complex backend systems across content management, e-commerce, gaming, chat, and CRM domains. I enjoy designing API-first architectures and delivering production-ready solutions on AWS and other cloud platforms. I’m passionate about clean code, testing, CI/CD, and modern architectures such as microservices and serverless. I thrive in collaborative teams, mentor engineers, and continuously improve development processes through automation and robust tooling.

Michael Kozinets

I’m a Senior Web Developer and Tech Lead with over 20 years of experience crafting high-load, real-time web applications and complex backend systems across content management, e-commerce, gaming, chat, and CRM domains. I enjoy designing API-first architectures and delivering production-ready solutions on AWS and other cloud platforms. I’m passionate about clean code, testing, CI/CD, and modern architectures such as microservices and serverless. I thrive in collaborative teams, mentor engineers, and continuously improve development processes through automation and robust tooling.

Available to hire

I’m a Senior Web Developer and Tech Lead with over 20 years of experience crafting high-load, real-time web applications and complex backend systems across content management, e-commerce, gaming, chat, and CRM domains. I enjoy designing API-first architectures and delivering production-ready solutions on AWS and other cloud platforms.

I’m passionate about clean code, testing, CI/CD, and modern architectures such as microservices and serverless. I thrive in collaborative teams, mentor engineers, and continuously improve development processes through automation and robust tooling.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Ukrainian
Fluent
English
Advanced

Work Experience

Senior Software Developer at Indivi
October 1, 2024 - December 31, 2025
Remote senior software developer responsible for backend and frontend development of high-load, real-time web applications. Led architecture decisions, implemented microservices patterns, and drove improvements to CI/CD pipelines and cloud integration (AWS).
Senior Web Developer at KashKick
November 1, 2023 - October 31, 2024
Developed web applications for a Tampa-based platform, designing and consuming REST/GraphQL APIs, improving performance and reliability, and collaborating with distributed teams.
Senior PHP Backend Engineer at 24i
January 1, 2022 - October 31, 2023
Backend engineering in PHP with a focus on microservices, database optimization, and AWS-based deployment for CMS and streaming platform components.
Team / Tech Lead at Paktolus
August 1, 2020 - December 31, 2022
Led a remote development team, defined technical roadmaps, implemented microservices, CI/CD, and monitoring solutions; mentored engineers.
Senior Web Software Developer / Tech Lead at Proxify
March 1, 2019 - July 31, 2020
Delivered web solutions as a lead developer, designed robust API services, and supported cloud deployments with performance tuning.
Senior Software Developer at Freelance
May 1, 2017 - April 30, 2019
Freelance software development for multiple clients; built PHP/Node.js backends, APIs, and integrations with a focus on quality and timely delivery.
Senior Software Developer (Remote Developer, Contract) at Dropmock
March 1, 2017 - May 31, 2017
Contract remote development contributing to backend services, API design, and timely delivery for client projects.
Senior Software Developer (Remote Developer) at Avantime
October 1, 2015 - February 28, 2017
Remote development at Avantime, contributing to backend systems and cross-team collaboration on distributed projects.
Software Developer of MyWebsite core team (Full Time) at 1&1 Internet AG, MyWebSite
December 1, 2014 - September 30, 2015
Contributed to the core development of MyWebsite in a large hosting environment, building backend components and CMS features.
PHP Developer (Full Time) at Mysportgroup GmbH
May 1, 2014 - November 30, 2014
Developed features for e-commerce and membership platforms; collaborated with cross-functional teams to deliver reliable web solutions.
Senior Web Developer (Remote Developer) at The Negotiation Experts
November 1, 2012 - May 31, 2014
Remote senior web development focusing on building scalable web interfaces and APIs; performance optimization for a negotiation platform.
Web Developer (Remote Developer) at The Negotiation Experts
December 1, 2010 - October 31, 2012
Remote web development contributions to the negotiations platform; UI and backend improvements to support growth.
Web Developer (Freelance) at Freelance
May 1, 2006 - December 31, 2010
Freelance web development across multiple clients, focusing on PHP/JavaScript backends and responsive frontends.
Web Developer (Remote Developer) at Interferenza S.R.L.
February 1, 2002 - May 31, 2006
Remote web development for diverse clients; backend integrations and frontend improvements.
Software Engineer (Full Time) at Sumy State University
July 1, 2001 - February 28, 2002
Software engineering role within Sumy State University; development in academic and administrative projects.
Software Engineer (Contract) at Sumy State University
July 1, 1999 - July 31, 2001
Contract software engineering role at Sumy State University; early professional software development experience.

Education

PhD degree at Kyiv Polytechnic Institute (Kyiv, Ukraine)
January 1, 2009 - January 31, 2026
MSc on applied mathematics, department of applied mathematics at Sumy State University, Sumy, Ukraine
January 1, 1996 - December 31, 2001
Postgraduate studies in Artificial Intelligence/Pattern Recognition at Sumy State University, Sumy, Ukraine
January 1, 2001 - December 31, 2004

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more