One-off help
My app is stuck or nearing launch
Start with a focused audit, production-readiness review, or fix sprint. I identify the highest-risk problems and give you a practical path forward.
Compare one-off services →Senior engineering support for Lovable, Bolt.new, and AI-built apps
Keep building with AI. Ship with a senior engineer behind you.
You stay in control of your Lovable or Bolt.new app. I review the risky parts, fix what the AI cannot, and help keep production secure, stable, and maintainable.
Get help with a stuck app, prepare for launch, or add ongoing technical backup while you continue building.
Choose your path
What kind of backup do you need?
Continuing partnership
I want to keep building it myself
Add ongoing engineering support for architecture decisions, risky changes, difficult bugs, and production safeguards while you keep using your preferred AI tools.
Explore Ongoing Support →Move fast without guessing about production risk
Authentication and authorization
Confirm users can only reach the data and actions they should.
Database and migrations
Review schema changes, ownership, backups, and recovery before live data is at risk.
Deployment and environments
Separate development from production and make releases repeatable.
Payments and critical journeys
Verify the flows that create revenue, accounts, and durable data.
Architecture and maintainability
Keep rapid AI-assisted changes from turning into an unsafe dependency maze.
Hard bugs and production evidence
Diagnose from logs, behavior, and code—not another round of hopeful prompting.
Focused engagements
Choose the right one-off starting point
Each service answers a different question, so you do not pay for overlapping diagnosis.
AI App Audit
$149
When you are not sure what is wrong or what to fix first.
- ✓Senior-engineer codebase review
- ✓Prioritized launch blockers and risks
- ✓Deployment, auth, and database red flags
- ✓Clear fix-first roadmap
Use the request form to share your app context.
Request an AI App AuditFix Sprint
from $499
When an agreed, bounded technical problem needs hands-on implementation.
- ✓Agreed debugging and code changes
- ✓Build, deploy, auth, or database work where scoped
- ✓Verification against acceptance criteria
- ✓Documentation and handoff
$75 for 30 minutes, credited if you proceed.
Book a Technical ConsultationProduction Readiness Review
$299
When the app works and you need a responsible launch decision.
- ✓Security and authorization review
- ✓Architecture and data-flow assessment
- ✓Testing and verification gaps
- ✓Deployment, observability, backup, and recovery review
Use the request form to share your launch context.
Request a Production Readiness ReviewPrefer to talk first? Book a Technical Consultation. The 30-minute technical consultation is $75 and is credited if you proceed.
Ongoing Engineering Support
Keep the speed of Lovable. Add a technical safety net.
You continue shaping the product and building features. I step in where senior engineering judgment matters: architecture, authentication, data ownership, database changes, deployment, hard bugs, and production risk.
The 30-minute technical consultation is $75 and is credited if you proceed.
What it can include
- Review high-risk changes before production
- Architecture, API, auth, and database guidance
- Diagnosis and repair of hard bugs
- Supabase or Firebase policy and migration review
- Deployment, monitoring, backup, and recovery
- A prioritized monthly technical-risk list
- Scheduled check-ins and agreed async support
- Scoped implementation within monthly capacity
Ongoing support is a defined monthly engineering capacity, not unlimited development or 24/7 incident response. The support window, response target, channel, and included work are agreed before the engagement begins.
Direct senior-engineer judgment, from context to handoff
Share the context securely
Provide the repository, current stage, important user journeys, and the problem or launch decision. Do not send secrets in a public form.
Get a human senior-engineer diagnosis
Mamerto reviews the code, architecture, deployment, and evidence around the risky areas.
Agree on priority and scope
Receive findings, a fix-first plan, and a clear recommendation for an audit, sprint, review, or ongoing support.
Fix, verify, and hand off
Implement the agreed work, verify it against explicit acceptance criteria, and document what should happen next.
Your engineer
Senior judgment, delivered personally
I’m Mamerto Fabian Jr., founder of Codefrost and a full-stack software architect with more than 20 years of software-development experience.
I work across architecture, authentication, databases, deployment, testing, and maintainability. The same judgment goes into the developer tools I build and maintain for AI-assisted workflows.
Selected engineering work
Developer tools for AI-assisted workflows
I don’t only review AI-built software—I build and maintain developer tools for AI-assisted workflows.
Bolt to GitHub
Helps Bolt.new builders move their projects into professional GitHub workflows.
MAID Runner
Keeps extended AI coding work connected to explicit plans and acceptance criteria.
Practical guidance
Understand the risk before you buy a service
Free Download
25 Things to Check Before Launching an AI-Built App
Not ready to hire me yet? Get the same checklist I use to review AI-generated apps before they go to production.
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Frequently asked questions
Can I keep using Lovable or Bolt.new myself?
Yes. You keep shaping the product and using the tools that help you move quickly. I review high-risk changes, solve problems that need direct engineering, and help protect production.
Do I have to stop “vibe coding”?
No. Prompting is useful for many product and interface changes. Authentication, authorization, migrations, payments, secrets, and live-data changes deserve stronger review before deployment.
What should be reviewed before I deploy?
Review access controls, data ownership, database changes, critical user journeys, environment configuration, secrets, monitoring, backups, and recovery.
What is the difference between the four services?
The AI App Audit finds what is wrong and what to do first. The Production Readiness Review supports a launch decision. A Fix Sprint implements one bounded problem. Ongoing Engineering Support adds defined monthly technical capacity.
Do you work with Supabase, Firebase, Vercel, and Netlify?
Yes. I also work across common React, Next.js, Svelte, and Node.js stacks used by AI-assisted builders.
Do you need access to production?
Not by default. I start with the least access needed. Repository, staging, logs, or production access is agreed separately when the scoped work requires it. Never paste passwords, private keys, production credentials, or customer data into a public form.
Do you offer ongoing support?
Yes. Ongoing Engineering Support can combine advice, review, maintenance, and scoped implementation within an agreed monthly capacity.
Is ongoing support 24/7?
No. It is not unlimited development or 24/7 incident response. The working days, support window, response target, channel, and included work are agreed before the engagement.
How does the paid consultation work?
The 30-minute technical consultation is $75. That fee is credited if you proceed with an audit, fix sprint, production-readiness review, or ongoing support agreement.
Get the right level of engineering backup
Start with a focused audit when the next step is unclear, or discuss a defined ongoing support arrangement while you keep building.
The 30-minute technical consultation is $75 and is credited if you proceed with an engagement.