Your AI-built app is not a failure. It may just need senior engineering.
AI tools accelerate early prototypes, but generated code often gets stuck at 80% with messy component trees, broken authentication, leaky database queries, and deployment road-blocks. We get your product across the finish line.
The Core Problem We Solve
AI coding assistants can generate dozens of files in minutes, but they frequently lose architectural context. The result is duplicated state, security holes in API routes, broken OAuth callbacks, brittle database schemas, and mysterious build failures when attempting to deploy outside the playground.
Who this service is engineered for
Designed for businesses, technical leaders, and founders who require senior execution rather than amateur experimentation.
What is included in this service
Clear architectural deliverables and engineering responsibilities covered in our engagements.
Codebase Forensic Audit & Triage
We inspect your generated code line by line, identify architectural anti-patterns, security gaps, and circular dependencies.
Component Tree Refactoring & State Clean-up
Consolidating 50+ duplicated UI components into clean, reusable React primitives with type-safe state management.
Authentication & Authorization Repair
Fixing broken session cookies, OAuth redirect loops, role validation, and protecting private API routes.
Database Schema & Query Stabilization
Fixing unsafe SQL queries, implementing proper foreign keys, creating indexes, and establishing database migrations.
Third-Party API & Webhook Hardening
Securing secret API keys (moving them off the client), implementing retry logic, and validating webhooks with signatures.
Production Deployment & CI/CD Setup
Configuring environment variables, resolving TypeScript build errors, and deploying to Vercel, Supabase, or AWS.
Typical Tangible Deliverables:
Tools and frameworks we leverage for this service
Modern, battle-tested technologies with deep ecosystem support.
How we execute this service step-by-step
Our structured 4-step framework from initial diagnostic to deployment and handoff.
Repository Review & Diagnostic Run
We clone your repository, run local diagnostics, catalog failing routes, and outline a prioritized triage list.
Architectural & Security Hardening
We fix critical vulnerabilities, remove client-exposed API keys, and repair broken auth and database layers.
Component Refactoring & Feature Completion
We clean up the UI logic, resolve state synchronization bugs, and build out remaining unfinished user flows.
Production Launch & Handoff
We deploy to production, verify live payments and webhooks, and provide clear documentation on how to maintain the code.
Feedback on our AI & Vibe Coding Rescue practice
Direct reviews from technical founders and executives who worked with us.
“We generated our cross-border remittance MVP using Cursor and Supabase, but our JWT auth broke right before regulator demo day. JoinAffix joined our emergency channel in 30 minutes, sanitized our API boundaries, and deployed a rock-solid Next.js 15 app in 5 days with zero security red flags.”
“Bolt generated 80% of our frontend, but our Stripe webhook handlers were a mess of duplicated charges. JoinAffix fixed the webhook idempotency in hours.”
“We had a Lovable AI prototype for multi-currency currency conversions that was throwing uncaught runtime exceptions under concurrency. JoinAffix rewrote the business logic with Zod validation and Next.js 15 Server Actions in under a week. Flawless execution.”
“We built our financial prototype using Cursor and Lovable, but hit a massive brick wall with auth loops and database permissions right before our investor demos. JoinAffix stepped in, audited every line, secured our database with PostgreSQL RLS, and got us deployed in 9 days. We raised our seed round the following week.”
“I spent 3 weeks wrestling with Next.js 15 route handlers generated by an AI assistant. JoinAffix sorted out the server/client boundaries and database migrations in two days. Outstanding engineering.”
“We hired a freelance team that used v0 and Cursor to build an investment dashboard, but the state was desynchronized and numbers were flickering across accounts. JoinAffix completely reconstructed the TanStack Query caching and server actions in 4 days. Unmatched speed and precision.”
Common questions about this service
Honest answers regarding timelines, ownership, and technical logistics.
In most cases, the core domain logic, UI ideas, and workflows can be rescued and hardened in a fraction of the time required for a total ground-up rewrite. We evaluate your code first and give you an honest recommendation.
Related engineering services
Other practices that frequently integrate with this service.
Custom Web Development
Full-stack applications built with Next.js, React, and modern architecture.
DevOps & Cloud Infrastructure
Docker, CI/CD, AWS, Azure — your infrastructure, engineered for scale.
Security & Infrastructure Audits
Find vulnerabilities before attackers do. Harden everything.
Stuck at 80% with your AI-built app?
Send us your repository or describe the roadblocks you are hitting. We will give you a clear rescue plan.