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# fintech

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I Spent Weeks Building a Clock for Global Stock Market Hours

I Spent Weeks Building a Clock for Global Stock Market Hours

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4 min read
The $500 Million Security Gap: Bank of Ireland UK’s Critical Failure

The $500 Million Security Gap: Bank of Ireland UK’s Critical Failure

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2 min read
What Are Stablecoins? Understand How They Work
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What Are Stablecoins? Understand How They Work

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12 min read
How I Solved the Distributed Transaction Problem in Fintech Microservices
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How I Solved the Distributed Transaction Problem in Fintech Microservices

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1 min read
Exactly Once Is a Lie: Managing Financial Invariants Under Concurrency
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Exactly Once Is a Lie: Managing Financial Invariants Under Concurrency

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5 min read
Why Your Payment Testing Is Broken (And How to Fix It With Random IBANs)

Why Your Payment Testing Is Broken (And How to Fix It With Random IBANs)

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3 min read
I Curated an Awesome List for SEC Filing Tools & Resources

I Curated an Awesome List for SEC Filing Tools & Resources

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2 min read
I Entered a Fake CVV — Here’s Why the Bank Immediately Rejected It
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I Entered a Fake CVV — Here’s Why the Bank Immediately Rejected It

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3 min read
I Used Claude Code to Build a KYC Spec for Indian Stock Broking 🇮🇳
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I Used Claude Code to Build a KYC Spec for Indian Stock Broking 🇮🇳

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3 min read
Secure PIN Processing: A Deep Dive into ISO 9564-1 PIN Blocks, RSA, and AES Encryption
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Secure PIN Processing: A Deep Dive into ISO 9564-1 PIN Blocks, RSA, and AES Encryption

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7 min read
Brazil's Pix Processed $1.7 Trillion in 2023 — What That Means for Fintech Developers

Brazil's Pix Processed $1.7 Trillion in 2023 — What That Means for Fintech Developers

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5 min read
Gold's 4% Plunge and the AI Agent That Didn't Trade: What February 2026 Reveals About Algorithmic Audit Gaps
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Gold's 4% Plunge and the AI Agent That Didn't Trade: What February 2026 Reveals About Algorithmic Audit Gaps

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9 min read
Tax Document Parsing in 2026: 1099s, W-2s, and 1040s at Scale

Tax Document Parsing in 2026: 1099s, W-2s, and 1040s at Scale

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3 min read
The Hidden Complexity of Bank Statement Parsing (And How We Handle 500+ Formats)

The Hidden Complexity of Bank Statement Parsing (And How We Handle 500+ Formats)

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3 min read
Decoding Market Sentiment for 100 Million Users: How We Built a Multi‑Model AI Engine with 1‑Second Response
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Decoding Market Sentiment for 100 Million Users: How We Built a Multi‑Model AI Engine with 1‑Second Response

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4 min read
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