Your AI works
in the demo.
I make it work
in production.

Most AI projects stall between prototype and production. I fix that — building reliable, production-grade systems your team actually owns.

JOB COMPLETEsouthern sun · ref #001System builtRAG · agents · pipelinesTeam unblockedno handholding neededYou own itfully documented · no lock-inBack to businessyou run it · we step awayDELIVERED ✓
15+
Years shipping production software
$180k+
Saved vs. a full-time AI hire
0
Junior handoffs. None.
3
Engagements at a time, max — you get focus
1
Point of contact. Start to finish.
The Problem

Your AI is live.
But is it actually working?

Most companies at this stage aren't asking 'should we do AI' — they're asking why theirs isn't reliable, measurable, or trusted by the team. That's exactly where I come in.

It hallucinatesYou launched an AI feature. It gives wrong answers. Users don't trust it and your team is embarrassed by it.
No evals, no benchmarksYou can't measure if your AI is working. Every model update is a gamble. You're flying blind.
Stuck in prototypeIt works in the demo. Getting it to production reliably is a different problem entirely — and nobody on the team knows how.
Costs are out of controlYour AI is running but it's expensive and getting worse. You don't know where the cost is coming from or how to fix it.
The gap between "AI demo" and "AI that works in production" is where most companies get stuck. I audit what's broken, implement eval systems so you can actually measure it, and rebuild what needs rebuilding. You own everything when I'm done. No retainers, no lock-in.
See how it works →
Gabriel Mongalo
About
I'm Gabriel — 15 years shipping real software. I've seen what breaks, what scales, and what actually delivers. I specialize in the hard part most consultants skip: making AI systems reliable, measurable, and trustworthy in production.

Southern Sun is my consulting practice for companies stuck between 'working demo' and 'trusted production system.' Most AI consultants build prototypes. I build the systems that actually run your business.

Previously: CellarTracker · Uber · Carvana · Flashpoint
Book a discovery call →
Services

Three ways
to work together.

Scoped engagements. Fixed prices. You work directly with me — no account managers, no junior handoffs. Less than a month of a full-time AI hire.

01

AI Audit & Roadmap

Your AI is live but unreliable. I audit your prompts, architecture, and eval coverage — find exactly what's broken, what it's costing you, and give you a prioritized fix plan with exact next steps.

$2,500 – $4,500
2–4 weeks · Fixed scope
Prompt auditEval coverage reviewFix plan
✦ Credits toward Build & Ship
03

Ongoing AI Advisor

Monthly strategy calls and async architecture reviews, scoped to your active AI initiative. Senior judgment on demand — no team embedding, no retainer creep.

$2,000 – $3,500/mo
Month-to-month · One initiative
Architecture reviewMonthly callsAsync feedback
✦ One initiative. No lock-in. Cancel anytime.
Process

No pitch.
No deck.
A process that starts
with your problem.

Every engagement starts with understanding your actual problem — not pitching a solution.

01

Discovery Call

30 minutes. You talk, I listen. No pitch, no deck — just an honest conversation about your situation.

02

Scope & Price

A clear proposal lands in your inbox — fixed price, defined timeline, exact deliverables. No surprises.

03

Build

Weekly check-ins, async updates. You always know where things stand — no black box engineering.

04

Handoff

Full docs, a walkthrough, and your team owns it completely. I step away — that's always been the goal.

Work

Built.
Shipped. Real.

A few things I've built — from production AI at scale to open-source tooling used by real teams.

10M+ Users · Live
CellarTracker

Built four production AI systems for a platform with 10M+ users — including eval infrastructure with scoring, regression testing, and model comparison, so the team knows when the AI is getting better or worse across every model update.

Start a conversation →
Shipped Product
cuvée.club

Wine club directory combining vector search with LLM — wine clubs matched by vibe using vector search, plus a multi-agent content pipeline (Writer, Editor, Scraper) to generate and maintain content at scale.

Visit site →
Open Source
biscotti

Prompt management and testing UI for AI agents — like Swagger UI, but for your agents. Non-technical teams iterate on prompts without touching code or deployments.

View on GitHub →
Get in touch

Tell me what's broken.

I respond within 24 hours — no sales team, no runaround.

G
Gabriel Mongalo
Discovery Call · 30 min · Free
30 minutes
No pitch. Just an honest conversation.
Remote · Google Meet
or
Send a message
I'll get back to you within 24 hours.
Remote · Worldwide