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I will fix react bugs and responsive website issues
Yevhen
About this gig
Is your React website displaying incorrectly, breaking on mobile, or showing frontend or Supabase errors?
I will diagnose and fix clearly defined issues in custom websites and web applications built with React, JavaScript, TypeScript, HTML, CSS, Tailwind CSS, and Supabase.
I can help with:
React component and state errors
responsive layout and mobile UI issues
HTML, CSS, Tailwind and JavaScript bugs
forms, modals, calendars and navigation
API, authentication and Supabase integration issues
PostgreSQL and RLS-related application errors
Vercel deployment and browser compatibility problems
You will receive:
a tested fix
updated source code
a clear explanation of the changes
professional communication throughout the order
Please contact me before ordering. Send a short description, screenshots or video, reproduction steps, relevant error messages, and a public website link if available.
Package limits apply to clearly defined issues. New features, redesigns, and complete website development require a custom offer or my separate website development Gig.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Yevhen
Yevhen
React Developer, SaaS and Excel Automation
- FromUkraine
- Member sinceSep 2025
- Avg. response time1 hour
Languages
English, Ukrainian, Russian
Hi, I’m Yevhen, a React developer and Excel automation specialist based in Austria.
I build responsive websites, landing pages and SaaS applications, fix frontend bugs and improve mobile layouts. My stack includes React, JavaScript, TypeScript, Tailwind CSS, Supabase, PostgreSQL, Vite and Vercel.
I developed Lifeya, a multilingual SaaS platform with online booking, scheduling, CRM, finance, team roles and notifications. I also automate Excel workflows using formulas, pivot tables, VBA macros and reports.
Clear communication, secure work and realistic deadlines.
My Portfolio
FAQ
What information should I send before ordering?
Please send a description of the issue, screenshots or a short video, steps to reproduce it, relevant error messages, your technology stack, and a public website link if available.
Do I need to contact you before placing an order?
Yes. Please contact me first so I can review the issue, confirm the correct package, estimate the delivery time, and avoid unnecessary cancellations.
What counts as a revision?
A revision covers corrections to the originally agreed fix. A new bug, feature, page, redesign request, or unrelated change is additional work and may require an extra or custom offer.
Can you fix Supabase and backend-related issues?
Yes. I can review clearly defined Supabase, PostgreSQL, authentication, API, RLS, and Edge Function issues. Please contact me first because backend problems vary in complexity.
Can you build a complete website or add new features?
This Gig is focused on bug fixing and responsive improvements. Complete website development and larger new features require a separate website development Gig or a custom offer.
