Denys Mikhalenko
Software Engineer at Figma
Sunnyvale, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDenys Mikhalenko is a seasoned software engineer based in Sunnyvale with over 25 years of hands-on experience building high-scale web applications and 11 years in senior engineering roles across major tech companies. He has driven performance and architectural work at Walmart Labs (earning a Bolt award), contributed to web core efforts at Facebook, and currently builds at Figma, blending frontend craftsmanship with systems-level thinking. A strong front-end and test automation practitioner, he has improved reliability for Facebook’s popular Lexical editor—adding regression tests, migrating to npm, and enhancing developer tooling. His background spans full-stack, C++, Java, and mobile stacks, reflecting a rare comfort moving between low-level services and user-facing interfaces. Fluent in delivering full lifecycle products from startup projects to large-scale platforms, he pairs pragmatic problem-solving with a track record of measurable impact.
11 years of coding experience
22 years of employment as a software developer
Engineer’s Degree, Computer Software Engineering, Engineer’s Degree, Computer Software Engineering at Vinnytsia State Technical UniversityHigh School, High School at Vinnitsa Technical Liceum
Russian, Ukrainian, English
Stackoverflow
4,096reputation
340kreached
6answers
4questions
firebase
top-1%
javascript
top-5%
google-cloud-firestore
top-1%
Github Skills (18)
e2e-testing10
google-cloud-firestore10
javascript10
e2e-test10
jestjs10
firebase10
react10
test-automation10
npm9
nodejs6
functional-programming6
android6
gradle6
ramdajs6
firebase-security6
Programming languages (7)
Github contributions (5)
facebook/lexical
Apr 2021 - Jul 2021
Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
Role in this project:
Front-end Developer & Test Automation Engineer
Front-end Developer & Test Automation EngineerContributions:50 commits in 3 months
Contributions summary:Denys primarily focused on improving the testing infrastructure and enhancing the reliability of the "lexical" text editor framework. Their contributions include reorganizing and expanding the test suite by adding regression tests, particularly around handling edge cases like hashtags and mentions. Furthermore, the user has migrated the project to npm and added new test recorder features, demonstrating a commitment to automated testing and developer experience.
contenteditableexcellentwysiwygrich-text-editorperformance
prontiol/vkmd
Jan 2016 - Feb 2020
Contributions:45 PRs, 99 pushes, 19 branches in 4 years 1 month
downloadinggoogle-chrome-extensionchromegoogle-chromemusic
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