You will get Fix your Next.js app that builds locally but fails on Coolify
Project details
"It works on my machine" is the most expensive sentence in development. If your Next.js build passes locally but breaks on Coolify, the cause is almost always one of a handful of known issues — and I've hit most of them myself building and deploying my own production platform.
What I fix:
• Environment variable handling differences between local and Coolify
• Build failures from Node version mismatches
• Static vs dynamic rendering conflicts in App Router
• Coolify reverse proxy and domain configuration errors
• Docker and Nixpacks misconfiguration
Same day for most issues. You get a working deployment and a clear explanation of what broke.
What I fix:
• Environment variable handling differences between local and Coolify
• Build failures from Node version mismatches
• Static vs dynamic rendering conflicts in App Router
• Coolify reverse proxy and domain configuration errors
• Docker and Nixpacks misconfiguration
Same day for most issues. You get a working deployment and a clear explanation of what broke.
Programming Languages
HTML & CSS, JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$35
|
Standard
$100
|
Advanced
$175
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 1 day |
Number of Revisions | 0 | 1 | 2 |
Bug Investigation | - | - | - |
Fix Documentation | - | - | - |
Detailed Code Comments | - | - | - |
Frequently asked questions
About Curtis
Full-Stack Developer Fixing Next.js MongoDB and AI Integration Issues
Oulu, Finland - 2:51 am local time
I'm a full-stack developer specialising in Next.js, MongoDB, Coolify deployments, and LLM/AI integrations. I've personally hit and solved most of the production errors that eat founders' time: MongoDB Atlas connection failures, Next.js builds that work locally but break on Coolify, Claude and OpenAI integrations throwing rate limit or context errors, and pages that Google simply won't index.
I fix these fast. Most issues resolved same day.
Beyond debugging, I build full-stack applications for startups — from MVP to production. I currently run FounderVouch, an event matchmaking platform for Nordic startup ecosystems, so I understand what founders actually need: working software, clear communication, no hand-holding required.
8 years in the British Army taught me one thing that transfers directly to client work: you deliver what you said you'd deliver, when you said you'd deliver it. No excuses.
What I work on:
• Next.js application development and debugging
• MongoDB Atlas configuration and connection issues
• Coolify and VPS deployment troubleshooting
• Claude / OpenAI / LLM API integration and error handling
• SEO technical fixes — indexing, robots.txt, Search Console setup
I work with: Startup founders, product teams, and developers who are stuck and need a fast, experienced pair of hands.
Available for same-day fixes, short sprints, and ongoing technical support.
Steps for completing your project
After purchasing the project, send requirements so Curtis can start the project.
Delivery time starts when Curtis receives requirements from you.
Curtis works on your project following the steps below.
Revisions may occur after the delivery date.
Diagnose
Analyse build logs and configuration to pinpoint the exact failure point
Fix
Resolve the deployment issue and confirm a successful build on Coolify