Sebastian G.

The next stage of your business runs on a system you don't have yet. I'll design it, build it and run it—end to end. Stuck looks like this: data scattered across tools that don't talk, reports built by hand, automations that break the day you need them. Usually the people are doing their jobs; the technology underneath them was never designed for the next stage. That's fixable, and it's what I do. I work with founders and operators who already see the version of their company that runs like a machine, down to the dashboards, and haven't found someone who can build it at that level. You move fast, you take the operation seriously, and you know that owning everything is different from doing it all yourself. Where I've done this before. Every client below is on this profile. • You have a product, paying users and a prototype that can't carry them. A founder came to me with a mockup. We built the real platform underneath it; today every balance reconciles to his broker's to the cent, and it's what his customers use. The build became an ongoing operations partnership. His words: "one of the best calls I've made." • Your operation lives in five tools and one person's head. For an insurance agency I connected Notion, Zapier, RingCentral and their policy system into one platform. Their words: "a complete custom platform that runs our entire insurance and payroll operation." • Work that only moves when someone pushes it. A recruiting firm runs 60 automated workflows I own, including a pipeline that turns a resume and an interview transcript into the finished documents their clients receive. • AI that looks like it works. In my own production pipeline, an AI check once silently rejected every valid input and raised no error. I found it, and I now build every AI step with validation and a human fallback, so a wrong answer gets caught before it costs anything. What you get • One system your whole business runs on, in place of tools patched together by hand: full-stack platforms on React, TypeScript, Node.js, PostgreSQL, Supabase and AWS. • Numbers you can trust across CRM, finance, payments (Stripe) and operations, because the data model and the integrations are designed as one, so a sale, a payment and a report agree with each other. • Work that runs without you: AI agents and automation (OpenAI, Claude, n8n) that carry real workloads, with validation and human review wherever a wrong answer would cost you money or a customer. • Technical direction you don't have to supply yourself: the fractional CTO layer that decides what to build, keeps it running, and leaves you with something another engineer could pick up tomorrow. How I work • Directly with me. I run discovery, design the architecture and write the code. • Every delivery ships with tests, documentation and a handover another engineer could pick up tomorrow. • You own everything: your repositories, your accounts, your infrastructure. • US business hours overlap, Eastern to Pacific, and a reply within the day. What makes us a match • Honesty: I tell you the truth about progress, problems and costs the day I see them, and I expect the same about priorities and constraints. • Hard work: I hold a high bar for what ships; you bring the same seriousness to your side. • Responsibility: I own my outcomes and my mistakes; you own your decisions, on time. If that's not how you work, we're not a match, and that's fine. If it is, send me a short description of what you're building and where it's stuck. Within a day you'll have my honest read on whether I'm the right fit and what I'd build first.