Oleksandr Klymenko
Résumé
— Hello! I'm software engineer with 7+ years of experience building scalable, high-performance web applications using React and Angular. Proficient in migrating legacy codebases, implementing component-based architectures, and working with micro frontends and backend-for-frontend (BFF) layers. Known for writing maintainable code, driving UI consistency, and collaborating effectively in cross-functional teams.
Experience
Now
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17th August 2020 - present
Work as Frontend Engineer at Zesty
Key achievements:- Led migration from Angular to React, introducing component-based architecture and improving performance.
- Implemented BFF (backend-for-frontend) architecture in Node.js and integrated LaunchDarkly for feature flagging.
- Collaborated with a cross-functional team (3-5 frontend devs, 10+ backend devs) to build and maintain an enterprise dashboard with charts, tables, and complex forms.
- Rendered React components inside Angular to support a gradual migration strategy.
Angular · React · LaunchDarkly · Module Federation · Micro Frontends
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? - present
Study English at Cool School
- Upper-Intermediate
- Intermediate ✅
- Pre-Intermediate ✅
- Elementary ✅
Back then
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15th August 2020
Relocated to Kyiv, Ukraine
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3rd January 2018 - 15th August 2020
Work as Frontend Engineer at Agilie
Key achievements:- Built an admin dashboard for a taxi service using Angular, with multi-language support and Google Maps integration.
- Developed a crypto wallet mobile app with NativeScript and Angular, delivering responsive interfaces and business logic.
- Contributed to a streaming platform UI, working with Angular, SCSS, and Figma-based designs.
- Maintained and extended Ruby on Rails e-commerce applications, focusing on UI and JavaScript-driven functionality.
- Delivered multiple high-quality marketing landing pages with semantic HTML and clean CSS.
Angular · JavaScript · TypeScript · HTML · CSS · SCSS · NativeScript · Ruby on Rails
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2015 - 2017
Teaching kids football ⚽️ and acrobatics 🤸♂️
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2004 - 2011
Football
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1999 - 2004
Acrobatics
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2011
Graduated from high school.
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2000 - 2011
Active school life.
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1st September 2000
Went to first grade!
- diligent self-development...
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23rd February 1994
Born in Dnipro, Ukraine. — Thanks, mom and dad!
Languages
Skills
Character
Likes😃
Dislikes😞
Wants🥺
Certificates
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August 2025
Completion EF SET English Certificate on EF SET
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2nd June 2025
Certificate of successful completion The Joy of React
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2022-2023
React - The Complete Guide Udemy
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2019
Angular Course
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June 2016
Specialist Diploma, Industrial and Civil Engineering Prydniprovs'ka State Academy of Civil Engineering and Architecture