Hi, I'mAntonije Mirkovic
I blend advanced mathematics, machine learning, and full-stack engineering to turn complex ideas into real-world tools.
My Story
I'm a third-year M.Sc. student in applied physics and industrial mathematics,
but that description barely touches who I am or what the last year has done to me.
To understand me, you need to know where I started...
One year ago, my entire life collapsed from every direction.
Physical Collapse
I was a competitive powerlifter with a clear identity and a future built around strength.
Then I was diagnosed with heart failure and my heart was misfiring 20% of the time.
Overnight, the one thing I trusted, my body, stopped cooperating.
Financial Collapse
At the exact same time, I blew my entire trading account.
Trading and mathematics were always passions of mine, my escape, my curiosity. But I wasn't disciplined. I traded emotionally, recklessly, without the mathematical rigor I knew I was capable of.
So in the same months my heart collapsed, my finances did too.
No strength.
No stability.
No control.
No identity.
This was my rock bottom.
And rock bottom is where I rebuilt myself.
The Rebuild
I didn't reinvent myself by choice. I did it because there was no other option left.
While my heart was misfiring,
I was studying.
While I couldn't train,
I was learning to code.
While I lost money,
I promised discipline.
Built Out of Survival
I taught myself full-stack development and machine learning out of survival, not ambition.
I needed a way to train safely with a failing heart, so I built one. Line by line, with no prior experience, I created a real-time ECG workout system:
- Arrhythmia detection
- PVC classification
- Polar H10 integration
- Live workout alerts
I watched my arrhythmias in real-time while debugging the code that kept me safe.
Then everything exploded.
Within months...
Zero coding experience
Advanced AI & Medical-Tech Systems
Built a real-time ECG monitoring system with arrhythmia detection from scratch
Financially wrecked
Full-Stack Quant Engineering
Mastered portfolio optimization, backtesting frameworks, and algorithmic trading
No network
Hacker Houses Across Continents
Connected with founders from Dubai, France, and the US in collaborative tech spaces
Anonymity
Y Combinator Private Events
Invited to exclusive YC gatherings based on work and reputation
Self-doubt
Jane Street Portal
Selected by one of the world's top quantitative trading firms
Independent Builder
Hedge Funds & Top AI Companies
My work attracted attention from quantitative firms and leading AI startups, opening unexpected doors into elite ecosystems.
10M+ Views & 70K Followers
Generated over 10 million views and gained 70,000 followers in just 3 months by documenting my journey publicly with transparent storytelling.
None of this came from privilege or background.
It came from building.
Today
I work at the intersection of mathematics, engineering, health, and finance.
In Health
- Real-time ECG analysis
- PVC pattern detection
- Medical safety systems
In Finance
- Cardinality-constrained portfolio optimization
- High-frequency crypto strategy research
- AI-driven trading analysis
- Full-stack quant engineering
I blew my trading account, but instead of quitting, I decided to master the mathematics behind markets.
I didn't want trading to be impulsive anymore, I wanted it to be engineered.
But the truth is: I'm not driven by prestige or career paths.
I'm driven by the memory of rock bottom,
the moment when everything I relied on failed me,
and I had to rebuild myself using nothing but curiosity, discipline, and faith.
I build because building is how I stay alive.
I learn because my mind replaced what my body could no longer do.
I trade with mathematics because pain taught me the cost of emotion.
I push forward because I promised myself I would not waste the second chance I was given.
If I had to describe myself in one sentence:
I'm someone who had his entire identity destroyed, physically, financially, and emotionally,
and rebuilt something stronger, smarter, and more purposeful in its place.
And I'm just getting started.
Featured Projects
Polar H10 ECG Arrhythmia Detector
A real-time ECG monitoring application that streams live cardiac data from Polar H10 chest straps and performs intelligent arrhythmia detection using advanced signal processing algorithms. Tracks PVC burden, detects patterns like bigeminy and trigeminy, and supports session-based analysis with planned alarm functionality for high-risk events.
Cardinality-Constrained Portfolio Optimization
This project explores portfolio optimization under cardinality constraints, where the number of assets selected in a portfolio is explicitly limited. Using integer programming, the project demonstrates how adding a cardinality constraint transforms a convex Markowitz optimization problem into a combinatorial, non-convex challenge.
SOLUSDT signal bot
A custom algorithmic trading system for Solana using custom signals, enhanced with BTCUSDT price context for confirmation. The strategy includes dynamic stop-loss, ATR-based take-profit, slippage modeling, and realistic funding/fee handling. Backtested on 5-minute candles with live simulation support. It has been deployed live and generated consistent profit in high freq trading environments.
GoCoachly
GoCoachly helps high-ticket coaches scale by automating workflows, surfacing personalized insights, and tracking key metrics. I built forward-deployed engineer systems that let coaches give direct feedback on features and fixes, making the platform evolve faster while staying aligned with their real needs.
BuildThisNow
A startup discovery platform that delivers AI-generated business ideas daily. Users can explore, analyze, and expand on startup concepts. I contributed to the frontend architecture, user interaction flow, and content generation logic.
Prompt Fox
A web platform and Chrome extension designed to enhance and manage AI prompts more effectively. Prompt Fox allows users to save, organize, and inject optimized prompts directly into AI tools. I contributed to both the frontend and backend, as well as the core Chrome extension logic.
The Grind
The society that separates its scholars from its warriors will have its thinking done by cowards and its fighting by fools.— Thucydides
Work Experience
Founding Software Engineer
Developed and iterated on 8 AI product builds, applying rapid prototyping and statistical A/B testing to drive engagement. Engineered and deployed 2 production-grade platforms, translating algorithms into scalable, real-time systems. Built a forward-deployed feedback agent in 4 days, leveraging context engineering and applied machine learning to improve prediction accuracy and user interaction. Collaborate closely with founders, designers, and product teams in a venture studio environment to rapidly launch and scale startups.
Mathematics Tutor
Tutored high school students in mathematics, focusing on problem-solving and conceptual understanding. Developed personalized learning plans and resources.
Combat Engineer
Served as a combat engineer. Developed skills in teamwork, leadership, and problem-solving under pressure.