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Fiverr Pro
English
$
USD
I will build scalable web apps with react, nextjs, and fastapi
Yevhen Hoha
Level 1
5.0
5.0
About this gig
Most freelancers specialize in either frontend or backend. I build both.
From modern React/Next.js interfaces to FastAPI backends, I deliver complete web applications without the communication overhead of working with multiple developers. The result is a product that's faster to build, easier to maintain, and ready to scale.
Over the past 2.5 years, I've worked on commercial projects ranging from SaaS platforms to internal business tools, with a strong focus on performance, security, and clean architecture.
What I can build
- Full-stack web applications
- SaaS MVPs
- Dashboards & admin panels
- FastAPI REST APIs
- Authentication systems (JWT)
- Third-party API integrations
- Responsive, modern UI
- Performance optimization for existing applications
Security matters
I don't just build featuresI actively look for common web vulnerabilities before delivery, including XSS, SQL Injection, JWT issues, and BOLA/IDOR, helping reduce security risks from day one.
Why work with me?
- 2.5 years of commercial Full-Stack experience
- Reduced a production bundle size by 43%
- Experience improving Core Web Vitals
- Clean, maintainable, well-structured code
- Clear communication and frequent progress updates
- Full source cod
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 Hoha
Yevhen Hoha
React Nextjs Bug Fix and Performance Expert
Level 1
- FromUkraine
- Member sinceJan 2023
- Last delivery3 months
Languages
English, Ukrainian, Romanian
🔥 Need it fixed fast, secure & production-ready?
I'm a Full-Stack Engineer specializing in React/Next.js and Python (FastAPI/Django). With a Cybersecurity background, I build and repair web apps with a security-first mindset.
What I do:
⚡ Performance: Fix Core Web Vitals, lag & cut bundle size (up to 43%).
🔒 Security: Audit & patch XSS, SQLi, JWT flaws & access control.
🛠️ Bug Fixing: Refactor messy legacy code & UI race conditions.
⚙️ Full-Stack: Connect TS frontends with async Python APIs.
Available for emergency patches & contract work. Message me to fix your app today!
My Portfolio
FAQ
What do I need to get started?
Please provide a detailed description of your project requirements, design preferences, and any specific functionalities you need.
Can you work on an existing project?
Yes, I can help you with modifications, enhancements, or debugging of your existing application.
Do you offer post-delivery support?
Yes, I offer free support for a limited period after project delivery. For ongoing support, we can discuss a maintenance plan.
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S spinnableai
Portugal
Ongoing collaborationIt’s been amazing to work with him.
$200-$400
Price
7 days
Duration
Helpful?V 
viktor_ondem
Spain
Ongoing collaborationAgain, great work and I would happily repeat!
$50
Price
3 days
Duration
Helpful?V viktor_ondem
Spain
Ongoing collaborationGreat work received!
$50-$100
Price
9 days
Duration
Helpful?T topflyer
Hungary
Ongoing collaborationYevhen Hoha is truly a FANTASTIC person to work with. He went above and beyond to resolve all the CSS issues, ensuring our website perfectly matched the mockup down to the last pixel. His clean code and quick responsiveness made this collaboration an absolute pleasure. 👍
$50-$100
Price
4 days
Duration
Helpful?
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S spinnableai
Portugal
Ongoing collaborationIt’s been amazing to work with him.
$200-$400
Price
7 days
Duration
Helpful?V viktor_ondem
Spain
Ongoing collaborationAgain, great work and I would happily repeat!
$50
Price
3 days
Duration
Helpful?V viktor_ondem
Spain
Ongoing collaborationGreat work received!
$50-$100
Price
9 days
Duration
Helpful?T topflyer
Hungary
Ongoing collaborationYevhen Hoha is truly a FANTASTIC person to work with. He went above and beyond to resolve all the CSS issues, ensuring our website perfectly matched the mockup down to the last pixel. His clean code and quick responsiveness made this collaboration an absolute pleasure. 👍
$50-$100
Price
4 days
Duration
Helpful?
