Not demos.
Sami Kiias · CTO @ Rascal AI · Founder @ Mak8r.fi
I build fullstack products from idea to production: multi-tenant SaaS, mobile apps and AI integrations. Six products built — three in production with paying customers. 11 years of entrepreneurship: I speak both business and code.
Not a mock demo: this is this website’s own lead pipeline. Every form submission passes through it — validation, storage, notification.
The same list guides every project — my own and clients’.
A demo proves nothing. A system is done when it runs for paying customers even when nobody is watching.
Everything that can be computed deterministically, I compute in code — auditable and free. The LLM gets judgment, never the bookkeeping.
Isolation goes down to the database, not the UI. Failure closes the door — it never opens another customer’s data.
Twice by hand, third time to the machine. Small repetitions add up to weeks — and the machine doesn’t forget.
A custom workflow engine where it differentiates the product — off-the-shelf Twilio where it doesn’t. The line is competitive advantage, not ideology.
Spec before code, tests before merge, releases every day. Discipline doesn’t slow you down — it removes the fear of changing anything.
Six products built — three in production with paying customers. Click through: each has verified numbers and a technical story.
Multi-tenant SaaS that runs an SMB’s marketing and sales: AI content pipeline, voice-call campaigns and analytics. ~207,000 lines of code, 423 releases.
A Pipedrive-class sales CRM with a built-in browser call center with live AI coaching, a workflow engine and document e-signing. ~123,000 lines, ~1,600 tests.
A multi-tenant site generator: describe your business by voice, and the machine creates a GitHub repo, a Vercel project, a domain and a finished site — transferable to the customer with one command.
A coaching app unifying training, nutrition, recovery and journaling. A deterministic progression engine + an LLM coach with pgvector memory. iOS, Android and PWA from one codebase.
YNAB-style envelope budgeting + debt management for Finnish life. All money moves as integer cents, and the debt-avalanche allocator splits the pool to the exact cent. iOS, Android and web from one codebase.
A family routine board for a shared tablet and parents’ phones. Kids sign in with a 5-character code — no account — while parents see progress in real time. Built in three days.
I don’t buy a ready-made marketing or product machine. I build it — AI-native from reasoning to runtime, wired together over APIs. The same stack runs my own products and client projects.
Almost everything runs over APIs, not by clicking UIs. A machine, not a pile of subscriptions.
When building pays off, I build it myself. I buy only where building truly doesn’t.
This is not a demo stack. The same machine runs Rascal AI and client projects in production.
Documenting the journey of building AI systems — real data, not stock photos. Videos, code, and posts update here automatically as I publish.
An unusual path from entrepreneur to builder of AI systems. Every stage added a new perspective.
I started as an entrepreneur — learning customers, sales and business fundamentals hands-on.
BBA in business, specializing in marketing. Digital marketing and analytics.
Self-taught developer. React, TypeScript, Node.js and modern cloud. Ideas turned into products.
I build products that run in production with paying customers: three Rascal products and three apps of my own — over 400,000 lines of code.
“An unusual background is a strength — I speak both business and technology.”
A new product, an MVP, or an AI feature for an existing system — tell me where you are, and we’ll figure out how it should be built.
I usually reply the same day.