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Fiverr Pro
English
$
USD
I will optimize saas performance, next js app, react dashboard, node js API, postgresql
Sara
About this gig
A slow SaaS can frustrate users, reduce engagement, and make even great features feel broken. If your dashboard loads slowly, APIs take too long, or database queries are holding your application back, I can help identify and improve the bottlenecks.
I optimize existing SaaS applications built with Next.js, React, Node.js, and PostgreSQL, focusing on measurable performance problems across the frontend, backend, APIs, and database.
SERVICES INCLUDE:
- SaaS performance optimization
- Next.js performance improvements
- React rendering optimization
- Slow dashboard optimization
- Node.js backend improvements
- REST API performance tuning
- PostgreSQL query optimization
- Database indexing review
- Data fetching optimization
- Loading and rendering improvements
- Caching opportunities
- Code bottleneck investigation
- Performance-related debugging
- Before and after testing
- Deployment support
Ideal for SaaS founders, startups, agencies, and businesses with slow web applications.
Send your performance issue, codebase details, or affected pages before ordering. I'll review the problem and recommend the right optimization scope.
Get to know Sara
Sara
expert
- FromGermany
- Member sinceAug 2026
Languages
German, English, French
Hello am a proffesional sales expert you go to get freelancer in various service such digital marketing and website creation and canva ebook design google sheet and lot more
FAQ
Can you determine why my SaaS application is slow?
Yes. I can investigate the relevant frontend, backend, API, or database areas to identify likely performance bottlenecks within the agreed scope.
Can you optimize a slow Next.js application?
Yes. Depending on the problem, this may involve rendering, data fetching, components, assets, requests, server-side operations, or other application-level improvements.
Can you improve a slow React dashboard?
Yes. I can investigate unnecessary rendering, expensive components, data loading, large datasets, and other performance issues affecting the dashboard.
Can you optimize slow Node.js APIs?
Yes. I can investigate API routes, backend logic, database operations, unnecessary processing, and other agreed server-side bottlenecks.
Can you optimize PostgreSQL queries?
Yes. I can review relevant queries, database access patterns and indexes to identify opportunities for improving query performance.
Do you guarantee a specific speed or performance score?
No fixed performance number should be promised before reviewing the application. Results depend on the existing code, architecture, hosting, third-party services, database, and identified bottlenecks.
Can you optimize an application built by another developer?
Yes, provided the relevant source code and development access are available and the application can be reasonably reviewed.
What if my SaaS has several performance problems?
Send the affected areas and symptoms before ordering. I can determine whether an existing package is suitable or whether the project needs a custom scope.
