You will get bugs, performance and deployment issues fixed in your web app
Top Rated
Project details
Is your web app slow, unreliable, difficult to deploy, or failing in production?
I will help rescue and stabilize your existing React, Next.js, Node.js, or cloud-based SaaS application by finding and fixing the highest-impact technical problems.
This project is designed for founders, CTOs, agencies, and SaaS teams that already have a working product but are struggling with production bugs, poor performance, broken deployments, unstable features, confusing logs, or a codebase that is becoming harder to maintain.
Instead of giving you vague advice, I focus on practical fixes that improve stability, performance, debugging, deployment confidence, and user experience.
Common issues I can help with include slow pages or APIs, broken user flows, frontend and backend bugs, build or deployment problems, environment configuration issues, weak logging, unclear production failures, caching problems, developer-level auth or session issues, CI/CD cleanup, and risky code patterns that cause recurring bugs.
You will receive code changes, pull requests or patches, technical notes, and a clear summary of what was fixed, what improved, and what should be addressed next.
I will help rescue and stabilize your existing React, Next.js, Node.js, or cloud-based SaaS application by finding and fixing the highest-impact technical problems.
This project is designed for founders, CTOs, agencies, and SaaS teams that already have a working product but are struggling with production bugs, poor performance, broken deployments, unstable features, confusing logs, or a codebase that is becoming harder to maintain.
Instead of giving you vague advice, I focus on practical fixes that improve stability, performance, debugging, deployment confidence, and user experience.
Common issues I can help with include slow pages or APIs, broken user flows, frontend and backend bugs, build or deployment problems, environment configuration issues, weak logging, unclear production failures, caching problems, developer-level auth or session issues, CI/CD cleanup, and risky code patterns that cause recurring bugs.
You will receive code changes, pull requests or patches, technical notes, and a clear summary of what was fixed, what improved, and what should be addressed next.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$950
|
Standard
$2,400
|
Advanced
$4,800
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | 1 | 1 | 2 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments | - | - | - |
Optional add-ons
You can add these on the next page.
Extra issue group
(+ 3 Days)
+$600
Logging and error tracking setup
(+ 3 Days)
+$700
CI/CD cleanup
(+ 3 Days)
+$800Frequently asked questions
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GF
Goodrich F.
Mar 31, 2026
GTM Expert Needed for AI SaaS Launch and Growth Strategy
Rafal was a great advisor and a valuable part of moving this project forward. He brought strong technical insight, asked the right questions, and helped bring clarity to areas that were previously ambiguous.
What I appreciated most was his ability to balance big-picture thinking with practical execution. He didn’t just suggest ideas, he helped translate them into actionable steps that made real progress.
Communication was consistent, thoughtful, and professional throughout. Rafal was easy to work with and clearly invested in helping the project succeed.
I’d absolutely recommend him to anyone looking for a sharp, reliable technical advisor.
What I appreciated most was his ability to balance big-picture thinking with practical execution. He didn’t just suggest ideas, he helped translate them into actionable steps that made real progress.
Communication was consistent, thoughtful, and professional throughout. Rafal was easy to work with and clearly invested in helping the project succeed.
I’d absolutely recommend him to anyone looking for a sharp, reliable technical advisor.
PA
Piotr A.
Dec 22, 2023
Experienced JavaScript Front-end developed.
Thank you for the professional top-notch cooperation, efficient communication and reasonable deadline. It has been a pleasure and hope to cooperate again soon!
SA
Søren A.
Jun 17, 2021
Front-end developer for our grocery shopping webapp
Rafal delivered good work on this React Native development project and I enjoyed working with him. His communication was good and he speaks English very well. He has sometimes been busy with other work, but apart from that it has been a good cooperation all along.
JV
Jai V.
Jun 3, 2021
Need an HTML/CSS expert for a UX intensive project
NK
Niklas K.
Mar 19, 2021
Tableau expert to create marketing dashboards, templates and promote them
About Rafal
Technical Co-Founder for Hire | AI SaaS MVPs Shipped in Weeks
100%
Job Success
Warsaw, Poland - 4:38 am local time
What you don't need is a junior dev who needs hand-holding, or an agency that goes quiet for three weeks and bills you for the silence. You need someone who can sit at the whiteboard with you, pressure-test the idea, then build the thing.
That's what I do. I help founders take AI SaaS products from "here's the concept" to "here's the live product users are paying for" - fast, and without the technical debt that kills you six months in.
What that looks like in practice:
- Validate before we build. I ask the uncomfortable questions early so you don't burn your runway building the wrong thing.
- Architect for speed and scale. Fast MVP that won't need a full rewrite the moment it gets traction.
- Ship. End-to-end: backend, frontend, AI/LLM integrations, auth, payments, deployment. One point of contact, no telephone game.
- Translate strategy into steps. I don't just hand you ideas - I turn them into a roadmap you can actually execute.
I work best with non-technical founders who want a real technical partner (not a vendor), and with technical founders who need an extra senior pair of hands to hit a launch date.
My stack: Next.js / React, Node, Postgres, OpenAI & Anthropic APIs, LLM, vector DBs, (SQL/NoSQL), Stripe, GCP / Azure.
If you're trying to get something real in front of users quickly and you want it done right the first time - let's talk. Send me a few lines about what you're building and where you're stuck, and I'll tell you honestly whether I'm the right person for it.
Steps for completing your project
After purchasing the project, send requirements so Rafal can start the project.
Delivery time starts when Rafal receives requirements from you.
Rafal works on your project following the steps below.
Revisions may occur after the delivery date.
Problem intake
You share the app context, current stack, access details, and the most painful bugs or production problems.
Investigation and root-cause analysis
I review code, logs, deployment setup, user flows, API behavior, or performance bottlenecks to find the real cause.