Why Learn Fintech & Payment Processing Using Go?
If you are a developer looking to build the next generation of financial infrastructure, mastering Fintech engineering is essential. The global economy is shifting away from traditional banking toward high-speed, digital-first payment systems that require absolute precision and security.
Go has become an industry standard for Fintech because of its unparalleled speed and reliability. In this field, a millisecond of latency or a single data race can result in failed transactions or lost revenue. Learning to build payment processors in Go puts you at the heart of the most demanding area of software development.
In this course, you’ll go beyond basic API calls. You will learn to manage the complex Payment Lifecycle—orchestrating the secure "handshake" between the customer, the merchant, and the payment platform. You’ll tackle the engineering challenges of transaction intent, secure encoding, and real-time reconciliation.
Whether you are aiming to join a high-growth Fintech startup or build your own payment engine, mastering these skills puts you at the forefront of modern finance. You aren't just building a website; you are building the secure, scalable infrastructure that moves the world’s money.
Your Instructor
Hi there! I'm Georgio, and I'm excited to be your instructor.
I have over 7 years of industry experience working in the fintech sector—including 4 years at PayPay, the largest payment processing company in Japan. During that time, I worked on various payment processing systems at scale, gaining deep insights into real-world scenarios involving over 70 million users. I’ve distilled that hands-on experience into this course to help you understand not just the theory, but how these systems work in practice.
Course Curriculum
- Introduction (2:18)
- What We’ll Build: Backend for a Product Checkout (2:06)
- Getting Started: Command Line Basics & Navigating Your File System (7:59)
- Installing Go and Exploring the Go Command Line (5:22)
- Setting Up Your Go Development Environment with GoLand (3:33)
- Setting Up Your Go Workspace and Project Structure (3:21)
- Setting Up a Go Project in GoLand (4:08)
- Setting Up the Front-End for a Go Backend (11:21)
- Understanding Front End, Back End, Servers, and APIs (3:12)
- How Go Applications Are Structured and Executed (19:23)
- Using the Go Standard Library (1:52)
- Function Parameters and Arguments (7:01)
- Variables, Data Types, and Control Flow in Go (16:40)
- Go Fundamentals Checkpoint (3:08)
- Setting Up the Go Project and Stripe Integration (6:15)
- Setting Up Basic Backend Endpoints in Go (11:00)
- Mapping Endpoints and Handling Server Requests in Go (18:16)
- Setting Up Your Development Environment with Postman (9:19)
- Server Lifecycle and Graceful Failures in Go (11:32)
- First-Class Functions: Passing Logic as Arguments (4:32)
- The Request-Response Cycle and HTTP Status Codes (6:28)
- Go Slices: Managing Lists of Data (5:35)
- Data Over the Wire: Strings, Bytes, and Responses (9:17)
- Go Syntax Shortcuts: Multi-Values, Inference, and Error Handling (8:18)
- HTTP Request Methods and Server-Side Validation (13:19)
- The Stripe Payment Flow Architecture (5:43)
- The Art of Reading Documentation (4:53)
- Constants, Variables, and the "Under the Hood" Peek (4:25)
- The Developer’s Compass: Navigating Go Source and Logic (2:24)
- Mapping the Payload: Structs and JSON Decoding in Go (12:19)
- Creating the Payment Intent: Server-Side Logic (20:51)
- Encoding the Payload: Sending Data Back to the Client (7:03)
- Testing the Flow: From Stripe to Postman (2:18)
- Visualizing the Flow: The Stripe Dashboard (4:14)
- Frontend Setup: Connecting the Pieces (2:24)
- End-to-End: From Go Logic to Succeeded Payments (5:46)
- Security Fundamentals: Why TLS is Non-Negotiable (4:32)