Serhii K.
Warsaw, Poland
99%
Job Success
Top Rated Plus
Full-Stack Team developer React, React Native, Node., Next, and Python
$35.00/hr
What can I help you with?
Crafting Web & Mobile project for a Decade
Commanding React, Node.js, React Native, Next.js, Nest.js
Taming MongoDB, MySQL, PostgreSQL, and Unleashing GraphQL Power
Sailing Smoothly in FinTech, Blockchain, E-commerce, ERP, CRM, and SaaS Waters
A Legacy of 10+ Years Packed with Innovations & Breakthroughs
🌟 My Journey:
10+ Years Soaring in Web & Mobile App Development Skies
Mastery in JavaScript Realms: React, Node.js, React Native, Next.js, Nest.js
Database Domination: MongoDB, MySQL, PostgreSQL, and Conquering with GraphQL
Niche Navigator: Setting Sail in FinTech, Blockchain, E-commerce, ERP, CRM, SaaS, Data Management, and Machine Learning
🏆 Noteworthy Chronicles:
Architected Codemotion's Epic Leap from 50 to 200+ Developers
Championed 20+ Projects, Including a Blockchain Crypto Banking Marvel for 50,000 Users and a SaaS Haven for UK Government Civil Servants
💡 Why Choose Me:
Proven track record in high-load financial and blockchain projects
Committed to delivering high-quality results aligned with business needs
Agile, adaptable, and fluent in English
Effective in remote collaborations across various time zones
🔥 Ready to Empower Your Business:
As part of the Codemotion Ninjas team, I bring a wealth of experience and a commitment to excellence. Let's collaborate to turn your vision into a reality!
Feel free to adjust or add any specific details that you think would enhance your profile further! 🌟🚀
Work history
Work history
Full Stack Engineer
Mar 15, 2023
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Aug 7, 2023
Private earnings
Developer
Dec 22, 2021
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Jul 11, 2023
No feedback given
Private earnings
Tech Lead & Full Stack Developer
Oct 3, 2022
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Mar 14, 2023
Private earnings
Developer
Aug 25, 2021
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Dec 22, 2021
Private earnings
sawi exchange techlead
Dec 13, 2020
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Nov 30, 2021
"Serhii played a very important position as tech lead and key backend contributor to this project. His vast knowledge in the technologies involved helped unblock the team on many occasions…
Private earnings
Passionate Frontend-Developer with deep GraphQL/Apollo Experience
Jul 20, 2021
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Sep 28, 2021
"Working with Serhii was great on all levels !"
Private earnings
tech lead
Jan 18, 2021
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Jul 8, 2021
"Serhii played a very important position as tech lead and key backend contributor to this project. His vast knowledge in the technologies involved helped unblock the team on many occasions…
Private earnings
Fullstack developer
Apr 23, 2020
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Dec 14, 2020
Private earnings
React app in AWS Amplify/GraphQL project for custom chat app
Apr 2, 2019
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Apr 23, 2020
"I have nothing but good things to say about Serhii. He was easy to work with, skilled, and organized. He helped us build our React app, integrated it with our…
Private earnings
rework the Taxihochelaga.com website
May 6, 2010
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Sep 28, 2018
No feedback given
Private earnings
Laravel eCommerce Site Full Stack Developer
Apr 10, 2025
-
Present
Job in progress
Private earnings
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Skills
Skills
- React Native
- JavaScript
- TypeScript
- Node.js
- React
- Python
- PHP
- Front-End Development
- Angular 5
- Vue.js
- Next.js
- SaaS
- React Bootstrap
- FinTech
- AI Development