You will get a hardened React/Node SaaS app ready for production
Top Rated
Project details
Is your React/Node/cloud SaaS application slow, unreliable, difficult to deploy, or failing in production?
I will audit, debug, and harden your existing SaaS application so it becomes more stable, observable, and production-ready. This is a practical rescue and hardening service for teams with bugs, weak logging, unreliable deployments, performance issues, broken environments, missing retry logic, cache problems, or fragile production behavior.
Depending on the package, I can investigate the issue, fix high-impact problems, improve logging and error handling, clean up deployment/configuration, add retries where appropriate, address cache problems, improve API/frontend performance, and document remaining risks.
Ideal for SaaS founders, CTOs, agencies, and engineering teams that need a senior developer to stabilize an existing React, Node.js, Next.js, API, or cloud-hosted SaaS application.
I will audit, debug, and harden your existing SaaS application so it becomes more stable, observable, and production-ready. This is a practical rescue and hardening service for teams with bugs, weak logging, unreliable deployments, performance issues, broken environments, missing retry logic, cache problems, or fragile production behavior.
Depending on the package, I can investigate the issue, fix high-impact problems, improve logging and error handling, clean up deployment/configuration, add retries where appropriate, address cache problems, improve API/frontend performance, and document remaining risks.
Ideal for SaaS founders, CTOs, agencies, and engineering teams that need a senior developer to stabilize an existing React, Node.js, Next.js, API, or cloud-hosted SaaS application.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$1,200
|
Standard
$2,800
|
Advanced
$5,500
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 1 | 1 | 2 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Extra urgent issue
(+ 1 Day)
+$700
Extra repo/app area
(+ 2 Days)
+$900
Observability setup
(+ 2 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
Senior Full-Stack SaaS Engineer | AI MVPs, Rescue & Scale | Tech Lead
100%
Job Success
Warsaw, Poland - 2:23 pm local time
Recent work includes:
• Growing to 20k MRR from five SaaS products
• Reducing cloud costs by 90%
• Improving e-commerce conversion rate by 158%
• Contributing to commerce storefront workflows on a platform serving 5M+ monthly users
• Improving P0 recovery time to approximately 30 minutes
• Scaling video rendering on cloud to 200 jobs per day, with peaks around 500
I’m a strong fit when:
• You have an AI SaaS idea or partially built product that needs a clear path to launch
• Your React, Next.js, or Node application is unreliable, expensive, or difficult to deploy
• Your team needs a senior engineer to own a critical product workflow or launch deadline
• You need a technical audit or modernization plan before committing to a larger build
What I can own:
• Product and technical scope
• Frontend and backend implementation
• OpenAI and Anthropic API integrations
• Authentication, subscriptions, Stripe, and third-party integrations
• Queues, rendering, retries, logging, and observability
• Deployment, production checks, documentation, and handoff
My approach:
1. Clarify the business outcome, users, deadline, and constraints
2. Define the smallest valuable scope and measurable acceptance criteria
3. Build, test, deploy, and document the agreed workflow
4. Surface risks and tradeoffs early
Core stack: Next.js, React, TypeScript, Node.js, GraphQL, Python, Remotion, FFmpeg, OpenCV, Stripe, GCP, Azure, Docker, and Kubernetes.
Message me with what you’re building, its current stage or stack, and your target launch date. I’ll reply with the likely next step and tell you directly whether I’m the right fit.
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.
Triage and access review
I review symptoms, recent changes, logs, monitoring data, repository structure, and available environments.
Root-cause investigation
I reproduce the issue where possible, inspect code/configuration, and prioritize the highest-impact fixes.