Sergej Fedorovic
I build banks.
I build ventures.
I have opinions about it.
CIO at Creative Dock · digital banking & fintech · angel investor · Prague
30 years across tech, business, and 5+ languages. Enterprise architecture in DACH banking, years of projects in the MENA region, 12 years deep in Polish tech and culture, startup and VC world rooted in the Baltics. 20+ companies built with, advised, or invested in.
I understand systems fast — people, cultures, business models. Show me how it works and I'll tell you where it breaks.
Things I've shipped
Side projects. Built mostly with AI agents in Cursor. See all projects →
RemoteKit
Zero-trust mobile frontend for AI coding agents
E2E encrypted relay that lets you use Cursor from a tablet or phone while your Mac Studio does the heavy lifting. Your code stays on your Mac.
remotekit.ai →Dotenvup
Developer tool · VS Code / Open VS X extension
.env management for developers. Keeps environment variables in sync and out of the wrong hands. Available on Open VS X and VS Code Marketplace.
dotenvup.com →QR Code Generator
Business cards, vCards, calendar events, badges
Professional QR codes and business cards with offline support and PWA. Used at conferences and networking events.
qr.strt.it →a.strt.it API
QR codes & business cards for AI agents
Dead simple API that ChatGPT, Claude, and other AI assistants can use to generate QR codes and vCards. No auth needed for the free tier.
a.strt.it →Polite Responses
Chrome Extension
Generate polite professional responses — or fun predefined answers to spammers. Built with vibe coding, obviously.
Chrome Web Store →reail.ai
AI authenticity & digital trust
Tools to detect deepfakes, AI-generated content, and digital manipulation. Bringing transparency and trust back to the age of AI. Early stage.
reail.ai →Opinions I'll defend
No-code is dead. Long live vibe coding.
AI-augmented code beats drag-and-drop. Every time. I build with AI agents in hackathon-style sprints — I call method "hagenthon" — and it is faster, cheaper, and more maintainable than anything no-code tool can produce.
Git should be taught in elementary schools.
Version control is not "developer stuff." It is how you learn to experiment without fear, collaborate without chaos, and recover from mistakes fast.
If your venture hasn't shipped MVP in 6 weeks, your process is the product.
I've seen ventures die in planning. The ones that survive start building on day one and iterate from there. Architecture matters, but shipping matters more.
Best tech leaders sit on both sides of the table.
When I build, I think like investor: is this scalable? Will this team survive Series A? When I evaluate, I think like builder: is this tech debt fatal or cosmetic? Most people do only one. I do both.
Thinking
How people, tech, and language connect.
Language & Personas
Generational Text Markers Matrix
How Boomers, Gen X, Millennials, and Gen Z use emoji, punctuation, and slang — and what it tells you about reaching each audience. Understanding communication is understanding your customer.
Customer Experience
"We don't really care about you!"
When your bank calls you not to fix the problem but to ask you to change your NPS score. A story about why traditional banking is going to die.
Build & AI
SaaS is dead
I vibe-coded a full PM system during a workshop from phone photos of Excel and PowerPoint on the TV. The time to build software is now shorter than the time to order it.
More coming from LinkedIn
No-code is dead · Hagenthon method · What MENA taught me about delivery · Cross-cultural project lessons
The Hagenthon Method
How I build. How I think you should build too.
A hagenthon is a time-boxed build sprint — typically a weekend or a few intense days — where you use AI agents to ship a working product from zero. Not a hackathon. Hackathons produce demos. A hagenthon produces deployable software.
Scope before you start. No scope creep during the sprint.
AI agents do the coding. You do the architecture, review, and decisions.
Ship or kill. No "almost done." It either works or it doesn't.
Own what you ship. Real code in a real repo. No platforms you rent.
Review everything. AI writes fast but makes mistakes. You are the quality gate.
Every project on this site was built using the hagenthon method. Dotenvup, QR generator, this site — all of it.
About
I'm Sergej Fedorovic. 30 years I do what I do best — understand how things work and make them work better. My background is equal parts technology and business. I studied informatics, management, and marketing, and my career reflects all three.
I've been developer, solution architect, enterprise architect, CTO, and CIO. Also product manager, marketing lead, sales engineer, and export specialist. I speak 5+ languages. That's not accident. I'm obsessed with how people communicate, how cultures think, and how that shapes every project.
I architect digital banks and fintechs. German and Swiss banking in DACH, years of fintech delivery in MENA — when someone says "build a bank," I'm the person they call. Creative Dock, where I'm CIO, is deeply embedded in DACH markets. I've also built CRM platforms, trading apps, venture studios, and Chrome extensions. Done enterprise transformations and scrappy MVPs in a weekend. I can talk to your board and review your pull requests.
Today I run tech programs at venture builder, mentor startups at accelerators, invest my own money in companies I believe in, and ship my own tools on the side. My focus hasn't changed in three decades: understanding systems fast — people, cultures, business models. Show me how it works and I'll tell you where it breaks and what to fix first.
These days I build with AI agents in hackathon-style sprints — I call method "hagenthon." After 30 years, tools keep changing. The skill — understanding what you're building — doesn't.
Outside of work: runner, swimmer, and heavyweight in the gym. I bring the same physical presence and energy to sport as I do to business.
Latest on X: SaaS is dead
Where I've built, invested, mentored, and led
Ventures & Investment
Founded & Co-founded
Let's talk
DM me on X. That's where the real conversations happen.