Sergei Afonchenko

Jobs 0% verified

Senior Full Stack Developer

Teramind

Mar 2022 - Current (4 years 5 months)
Senior Full Stack Developer

Emergn

Jul 2021 - Apr 2022 (10 months)

• Led development of a Web SPA with a React frontend and Node.js API, improving user engagement by 27.5%. • Implemented multiprocessing in a data processing backend, increasing data processing speed by 45.2%. • Guided project direction and ensured timely delivery, decreasing time-to-market by 22.7%
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Full Stack Developer

Developer Express

Jun 2020 - Jul 2021 (1 year 2 months)

• Optimized web application performance, reducing page load times by 32.1% and improving user retention by 14.6%. • Implemented a new CI/CD pipeline, reducing deployment times by 57.8% and minimizing downtime during releases. • Collaborated with cross-functional teams to enhance product functionality, resulting in a 23.9% increase in sales.
Full Stack Developer

STC Group

Mar 2019 - May 2020 (1 year 3 months)

• Optimized backend processes, reducing resource consumption by 21.5% and cutting operational costs by 15.8%. • Automated testing procedures, decreasing bug occurrences by 19.4% and accelerating release cycles by 25.3%.

Education 0% verified

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