REC · AVAILABLE · ASYNC · USD
I build products end-to-end. From idea to paying customers.
Who I am
— my grandfather, mechanic's shop, 1998
I was 11 and I worked with my grandfather at his mechanic's shop. He had me take apart everything: engines, carburetors, gearboxes. One day I asked him: «Grandpa, why do you make me take apart everything?» He looked at me and said the line above. It took me twenty years to understand what he was teaching me.
Code came late. Not until 2020, at 23, did I pick up JavaScript on my own. No bootcamp, no university, no mentor — just the same shop logic applied to a different thing: take it apart until you get it, then put it back together better. Six years coding every day, two getting paid for it.
Today I'm still taking things apart, but now they're ideas. I take them apart to understand how to build them. A team that wants to add AI to their product but doesn't know where to start, a vertical no one attacked yet, an idea that exists in someone's head but not in production — they're all pieces you can imagine, design and build from scratch. The shop logic still holds: if you understand it, you can make it.
I worked at companies. They taught me to write tickets, wait for specs, hand off deploys. I learned the craft there. Then I found I move faster solo, closing the full loop. For the past 6 years I've been building products that way, end-to-end. LocalCenter, Sesión, JARVIS — they're not features I maintain, they're products that exist because I thought them, designed them, and shipped them.
Now I'm looking for a team where that matters. I don't want to be the engineer who gets tickets. I want to be the one who closes the loop: idea, code, deploy, customer, feedback, iteration. If your AI product needs to leave the lab and start charging money, I'm probably who you're looking for.
No system is magic. Everything can be understood if you take the time to disassemble it.
By the numbers / STATS
Recognition / VALIDATION
Selected from ~3,000 applicants. Built Sesión in 5 days — still active since.
B2B vertical SaaS for Argentine wholesalers. Built solo, end-to-end. Full AFIP integration, self-hosted, direct client support.
Selected work / 03
Therapists can't be on-call 24/7. Sesión can. Clinical co-supervisor with Claude Opus 4.6 + Sonnet 4.6, Safe-Fail layer (41 keywords + Opus second pass) and Fast Lane protocol (<3s in crisis). $0.14 USD per patient/month.
Operating 4 machines with Claude Code agents was SSH hell. JARVIS turns it into a native dashboard. Tauri 2 + Rust + Svelte 5. Real-time, multi-host, via Tailscale/SSH.
Vertical SaaS for wholesale businesses in Argentina. 9 paying clients · 1 year in production · full AFIP integration (WSAA + WSFE). Solo build. NestJS + Angular + SQL Server. Weekly releases, direct support.
Archive / ARCHIVE
Shipped products, side projects in production, and R&D experiments that didn't make it above.
Self-service ticketing platform with payments, event management, and server-side burst-deduping.
Multi-tenant conversational AI operators over WhatsApp. Anti-ban, human handover, failover to official WABA.
Marketing platform with web UI, native mobile (Flutter + iOS + Android), and AI orchestration for brand audits.
Vertical management system with 3D visualization, premium UX, and real-time dashboards.
CrossFit coaching platform with 25+ modules, 139 indexed exercises, nutrition, payments, and analytics.
Native agent that communicates with Kretz industrial scales over serial port, integrated into the LocalCenter SaaS for live weighing.
Concept for an agent that fixes Sentry bugs automatically and delivers them as a pull request. Landing + architecture.
What I build with / STACK
Same tools as the products above. Everything below has shipped to production with paying users at least once.
How I work / PROCESS
When the client calls at 11 PM because something broke, I don't hand off to 'the other team'. I am the other team. Discovery, code, deploy, support — same brain.
Async-first. Calls only when they add value. A good doc beats 5 standups per week. My standup is my commit log.
Demos impress at pitch day. Code keeps 9 clients paying a year later. I measure latency, cost, real errors — not slides.
Sesión costs $0.14 USD per patient because I measured it, not because I estimated. Every AI feature has its economics validated before shipping. If you can't show me unit cost, it's not production.
Tight loop. Something changes in production every Monday. Customer feedback enters Tuesday's backlog. If you went 3 weeks without shipping, you lost the game.
Sonnet executes, Opus advises when there's a crisis, Safe-Fail layer catches the critical. Orchestration patterns, not OpenAI wrappers. The chatbot is the most obvious feature and the least differentiated — AI should be product infrastructure.
Right now / NOW
LocalCenter — 9 clients who call me when AFIP goes down
A Friday at 7 PM. I fix it anyway. Weekly releases, direct WhatsApp support.
A team where 'ship it' actually means something
Senior Product Engineer. USD remote. Available now. Async. No pointless standups.
Claude agents that don't blow up production costs
Applying what I learned in Sesión to other verticals. Spoiler: Sonnet does 92% of the work.
Anthropic Builder Guide + MCP spec
What you need to know to ship agents to production, not to demo day.
JARVIS v0.2 — agent coordination across 4 machines
So a dev team can share Claude Code without stepping on each other. Open source.
How we work / RATES
One idea, a working MVP or a critical feature. Discovery + build + deploy in 10 business days. No long contract.
Validate fast, try before committing to more.
I'm your in-house Senior Product Engineer. 4 sprints per month, weekly cadence, priorities shift with the business.
Teams that need sustained velocity and a technical owner.
From idea to production. Discovery, architecture, build, deploy, plus 4 weeks of post-launch support.
6-12 week MVPs with clear scope and a committed founding team.
All models include direct access to me — no PMs, no middlemen. Initial discovery always free (30 min).
Before you write / FAQ
Solo. If the project needs design, QA or a specialist, I can bring in collaborators I've worked with before. I'll flag it upfront during discovery — no surprises.
Buenos Aires (UTC-3). Async-first with clients in US East, US Pacific and EU. Daily standups via Slack/Linear. Calls in 1-2h blocks when needed.
Yes. First 4 weeks after going live are included in the contract. After that we decide together — monthly retainer, one-off sprints, or documented handoff.
Yes, but with care. I need problem clarity and founding-team commitment. If you're still searching for the problem, start with discovery, not build.
Yes, before discovery. Send me yours or we draft one together.
I help you hire and onboard the next engineer. I can recommend people I've actually worked with.
Get in touch / CONTACT
Based in Buenos Aires, working async with USD clients across US and EU. Best at production AI agent systems, vertical SaaS, and small teams where shipping matters more than process.
Hi Emanuel — we're hiring a senior fullstack engineer for our AI startup.
Hi, thanks for reaching out. Available for FT remote USD.
Saw Sesión and JARVIS. Available for a call this week?
Send me times that work this week and I'll confirm.
