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<!DOCTYPE html>
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<title>CardFlow - Master Card Payment Systems Through Hands-On Engineering Workshop</title>
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<body>
<div class="container">
<header>
<div class="logo">CardFlow</div>
<div class="tagline">Workshop - Engineering Behind Every Card Transaction</div>
</header>
<section class="hero">
<h1>Engineers will <span class="hero-highlight">build and operate</span> a complete payment system on their laptop</h1>
<p class="hero-description">
From issuing payment cards to processing contactless transactions and printing receipts.
Gain deep, hands-on understanding of the payment infrastructure that powers billions of transactions worldwide.
</p>
<img class="tools" src="tools.jpeg"/>
<div class="top-cta">
<a href="https://www.linkedin.com/in/pavelgabriel/" class="cta-button">Connect for Workshop & Speaking Opportunities</a>
</div>
</section>
<section class="section">
<h2>What We Build Together</h2>
<div class="feature-grid">
<div class="feature">
<h3>Issue Payment Cards</h3>
<p>Create personalized payment cards using JavaCard technology. Understand card chip architecture and payment application deployment.</p>
</div>
<div class="feature">
<h3>Process Real Transactions</h3>
<p>Use NFC readers to process contactless payments. Print custom receipts with your logo.</p>
</div>
<div class="feature">
<h3>Operate Both Sides</h3>
<p>Run issuer (bank) and acquirer (processor) systems. Experience the complete authorization flow from both perspectives.</p>
</div>
<div class="feature">
<h3>Master ISO 8583</h3>
<p>Deep dive into the messaging standard that powers global payment networks. Build, route, and process real payment messages.</p>
</div>
</div>
</section>
<section class="section">
<h2>Why This Workshop Matters</h2>
<p style="color: var(--text-secondary); line-height: 1.8; margin-bottom: 30px;">
Most engineers see only fragments of the payment ecosystem. They might understand acquiring at a high level,
or work with issuing APIs, but rarely experience both sides of the network. This workshop changes that.
Engineers understand how their code fits into the bigger picture, make better architectural decisions,
and build more robust payment integrations.
</p>
<div class="tech-list">
<span class="tech-tag">JavaCard Development</span>
<span class="tech-tag">EMV/NFC Protocols</span>
<span class="tech-tag">ISO 8583 Messaging</span>
<span class="tech-tag">Payment Authorization</span>
<span class="tech-tag">Card Chip Programming</span>
<span class="tech-tag">Terminal Configuration</span>
<span class="tech-tag">Go Services</span>
<span class="tech-tag">Network Architecture</span>
</div>
</section>
<section class="section">
<h2>What Participants Say</h2>
<div class="testimonials-grid">
<div class="testimonial">
<div class="testimonial-header">
<img src="participant-christy.jpg" alt="Christy Cashen" class="testimonial-photo">
<div class="testimonial-info">
<h4>
Christy Cashen
<a href="https://www.linkedin.com/in/christy-cashen/" target="_blank" rel="noopener noreferrer">
<svg class="linkedin-icon" viewBox="0 0 24 24" fill="currentColor">
<path d="M20.5 2h-17A1.5 1.5 0 002 3.5v17A1.5 1.5 0 003.5 22h17a1.5 1.5 0 001.5-1.5v-17A1.5 1.5 0 0020.5 2zM8 19H5v-9h3zM6.5 8.25A1.75 1.75 0 118.3 6.5a1.78 1.78 0 01-1.8 1.75zM19 19h-3v-4.74c0-1.42-.6-1.93-1.38-1.93A1.74 1.74 0 0013 14.19a.66.66 0 000 .14V19h-3v-9h2.9v1.3a3.11 3.11 0 012.7-1.4c1.55 0 3.36.86 3.36 3.66z"/>
</svg>
</a>
</h4>
<div class="testimonial-title">Product Manager at KeyBank</div>
</div>
</div>
<p class="testimonial-text">
As a payments product manager, I was completely intrigued by the concept of building a tap to auth process with my very own computer, in a matter of 90 minutes. As a developer by hobby, and less so by trade, I was totally in awe at how well this workshop was put together. The directions were clear, resources plentiful provided beforehand, and the only hiccups I experienced were of my own lack of coding skills, which Pavel and team graciously guided me through. This workshop is a must, not only to blow your own mind with creating a fundamental payments process, but to be able to work with the team that put it together as well. Thanks for the experience!
</p>
<div class="testimonial-event">
Participant of <a href="https://www.youtube.com/watch?v=gBFg-t8wLjc" target="_blank" rel="noopener noreferrer">Workshop at Fintech Devcon 2025</a>
</div>
</div>
<div class="testimonial">
<div class="testimonial-header">
<img src="participant-thridev.jpeg" alt="Thridev Madyahanapu" class="testimonial-photo">
<div class="testimonial-info">
<h4>
Thridev Madyahanapu
<a href="https://www.linkedin.com/in/thridev-m/" target="_blank" rel="noopener noreferrer">
<svg class="linkedin-icon" viewBox="0 0 24 24" fill="currentColor">
<path d="M20.5 2h-17A1.5 1.5 0 002 3.5v17A1.5 1.5 0 003.5 22h17a1.5 1.5 0 001.5-1.5v-17A1.5 1.5 0 0020.5 2zM8 19H5v-9h3zM6.5 8.25A1.75 1.75 0 118.3 6.5a1.78 1.78 0 01-1.8 1.75zM19 19h-3v-4.74c0-1.42-.6-1.93-1.38-1.93A1.74 1.74 0 0013 14.19a.66.66 0 000 .14V19h-3v-9h2.9v1.3a3.11 3.11 0 012.7-1.4c1.55 0 3.36.86 3.36 3.66z"/>
</svg>
</a>
</h4>
<div class="testimonial-title">Senior Software Engineer at Mbanq</div>
</div>
</div>
<p class="testimonial-text">
The workshop was one of the most practical deep dives into card authorization flows I've attended. It bridges the gap of viewing the authorization stream from one end to seeing the full end-to-end card flow implementation in action. Its a must attend for anyone building payment infrastructure.
</p>
<div class="testimonial-event">
Participant of <a href="https://www.youtube.com/watch?v=gBFg-t8wLjc" target="_blank" rel="noopener noreferrer">Workshop at Fintech Devcon 2025</a>
</div>
</div>
<div class="testimonial">
<div class="testimonial-header">
<img src="participant-anatoliliotych.jpeg" alt="Anatoli Liotych" class="testimonial-photo">
<div class="testimonial-info">
<h4>
Anatoli Liotych
<a href="https://www.linkedin.com/in/anatoliliotych/" target="_blank" rel="noopener noreferrer">
<svg class="linkedin-icon" viewBox="0 0 24 24" fill="currentColor">
<path d="M20.5 2h-17A1.5 1.5 0 002 3.5v17A1.5 1.5 0 003.5 22h17a1.5 1.5 0 001.5-1.5v-17A1.5 1.5 0 0020.5 2zM8 19H5v-9h3zM6.5 8.25A1.75 1.75 0 118.3 6.5a1.78 1.78 0 01-1.8 1.75zM19 19h-3v-4.74c0-1.42-.6-1.93-1.38-1.93A1.74 1.74 0 0013 14.19a.66.66 0 000 .14V19h-3v-9h2.9v1.3a3.11 3.11 0 012.7-1.4c1.55 0 3.36.86 3.36 3.66z"/>
</svg>
</a>
</h4>
<div class="testimonial-title">Chief Technology Officer at Cybergizer</div>
</div>
</div>
<p class="testimonial-text">
An excellent workshop that clearly explains how card payments work behind the scenes. The hands-on exercises made complex topics like EMV, ISO 8583, and transaction routing finally click. I loved how practical and engaging it was - we didn't just learn the theory, we actually built and tested the full payment flow. The code examples for every part of the transaction chain were especially helpful. Super insightful experience!
</p>
<div class="testimonial-event">
Participant of a Developer Community Workshop, Nov 2025
</div>
</div>
</div>
</section>
<section class="section">
<div class="bio">
<h3>About the Speaker & Facilitator</h3>
<p>
<img src="facilitator-pavel-gabriel.png" alt="Pavel Gabriel" class="facilitator-photo">
<span class="facilitator-name">Pavel Gabriel</span>
<a href="https://www.linkedin.com/in/pavelgabriel/" target="_blank" rel="noopener noreferrer">
<svg class="linkedin-icon" viewBox="0 0 24 24" fill="currentColor">
<path d="M20.5 2h-17A1.5 1.5 0 002 3.5v17A1.5 1.5 0 003.5 22h17a1.5 1.5 0 001.5-1.5v-17A1.5 1.5 0 0020.5 2zM8 19H5v-9h3zM6.5 8.25A1.75 1.75 0 118.3 6.5a1.78 1.78 0 01-1.8 1.75zM19 19h-3v-4.74c0-1.42-.6-1.93-1.38-1.93A1.74 1.74 0 0013 14.19a.66.66 0 000 .14V19h-3v-9h2.9v1.3a3.11 3.11 0 012.7-1.4c1.55 0 3.36.86 3.36 3.66z"/>
</svg></a>
- with nearly 20 years in fintech, I've built and scaled payment solutions
across the full technology stack. I've designed resilient payment architectures for companies like Moov Financial,
architecting their multi-network card processing infrastructure. I author and maintain open-source Go packages
that provide foundational building blocks for payment systems, including ISO 8583, BER-TLV, EMV,
and other critical payment protocols. I share this knowledge through workshops and talks at conferences, developer meetups, and engineering teams worldwide.
</p>
</div>
<h2>Available Formats</h2>
<div class="formats">
<div class="format">
<div class="format-duration">60-90-120 Minutes<br/>Conference Talk or Demo</div>
<div class="format-type">Live demonstration and deep dive presentation perfect for conferences, meetups, and lunch & learn sessions</div>
</div>
<div class="format">
<div class="format-duration">4-6 Hours<br/>Hands-On Workshop</div>
<div class="format-type">Full workshop where participants build the complete payment system themselves</div>
</div>
</div>
</section>
<section class="bottom-cta">
<h2>Bring This Workshop to Your Conference or Team</h2>
<p>Looking for speakers who can deliver deep technical content with hands-on demonstrations?</p>
<a href="https://www.linkedin.com/in/pavelgabriel/" class="cta-button">Let's connect on LinkedIn</a>
</section>
<section class="section">
<a href="resources.html" class="outline">
Explore Technical Guides & Open Source Code →
</a>
</section>
</div>
</body>
</html>