Denys Chmel
Software Engineering Manager at DH Enterprise & Associates, Inc.
Village of Lynbrook, New York, United States
Summary
👤
Senior🎓
Top SchoolDenys Chmel is a software engineering manager with 14 years of hands-on experience and over 20 years of expertise in architecting and scaling cloud-native, customer-facing web applications. He blends deep technical skills in Node.js/TypeScript, React/Angular, AWS serverless and microservices with product-focused delivery, having driven measurable business outcomes like 60% cost reduction, 15% AOV uplift, and 15% YoY revenue growth. A proven leader in migrating monoliths to DDD-driven microservices and automating CI/CD pipelines, he also improves reliability through direct third-party API integrations and autoscaling policies. Denys contributes to well-known open-source tooling by improving PHPUnit’s exception handling and memory behavior, showing attention to robust error reporting and production-grade diagnostics. Based in Lynbrook, NY, he pairs an economist’s analytical background with a designer’s eye for UX, routinely collaborating across product, marketing and support to turn complex requirements into pragmatic systems.
14 years of coding experience
12 years of employment as a software developer
Master’s Degree, Economic Cybernetics, Master’s Degree, Economic Cybernetics at Taras Shevchenko National University of Kyiv
English
Github Skills (12)
testing-library10
php10
exception-handling10
mstest10
ui-testing10
teste10
phpunit10
testing10
object-oriented-programming9
debug9
unit-testing9
debugging9
Programming languages (10)
Github contributions (5)
sebastianbergmann/phpunit
Feb 2018 - Feb 2018
The PHP Unit Testing framework.
Role in this project:
Backend Engineer
Backend EngineerContributions:5 commits, 1 PR, 6 comments in 1 day
Contributions summary:Denys primarily focused on fixing and improving exception handling within the PHPUnit testing framework. They addressed issues related to the `ExceptionWrapper` class, ensuring correct behavior when handling and displaying exceptions, particularly around circular references and the preservation of the original exception information. The commits demonstrate a focus on refining the stacktrace presentation, ensuring critical exception details are displayed correctly within the testing environment. Key changes involved adjusting how original exceptions are stored and retrieved to prevent memory leaks.
testing-frameworktestingphpunit-testing-frameworkphp-unit
denis-chmel/habrahabr-more-extension
May 2012 - Aug 2015
Contributions:55 commits, 6 pushes, 1 tag in 3 years 3 months
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