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Iurii Rogulia

I'm Iurii Rogulia — a senior full-stack developer and former CTO building production software for over 25 years. Based in Finland, working 100% remote with clients worldwide.

Location Lappeenranta, Finland Joined Joined on  Personal website https://iurii.rogulia.fi

Education

Self-taught developer with 25+ years of professional experience

Pronouns

he/him

Work

Senior Full-Stack Developer & Freelancer, Finland

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Binary PDF Modification Detection: How It Works and Where It Fails
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Binary PDF Modification Detection: How It Works and Where It Fails

#pdf #security #forensic #fraud
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8 min read
Understanding PDF Metadata: What Your Documents Reveal
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Understanding PDF Metadata: What Your Documents Reveal

#pdf #tutorial #metadata #webdev
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7 min read

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How to Build a Next.js App in 30 Languages (Without Losing Your Mind)
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How to Build a Next.js App in 30 Languages (Without Losing Your Mind)

#nextjs #typescript #nextintl #i18n
1
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8 min read
Why Businesses Need PDF Tamper Detection in Their Workflow
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Why Businesses Need PDF Tamper Detection in Their Workflow

#pdf #fintech #fraud #security
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5 min read
Building a Multilingual RAG Chatbot for E-commerce: 1,614 Docs, 25 Languages, 70% Ticket Resolution
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Building a Multilingual RAG Chatbot for E-commerce: 1,614 Docs, 25 Languages, 70% Ticket Resolution

#nextjs #typescript #vercelaisdk #vector
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7 min read
PDF Fraud in Real Estate: Protecting Property Transactions
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PDF Fraud in Real Estate: Protecting Property Transactions

#pdf #fintech #fraud #security
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7 min read
Redis Rate Limiting for APIs: Sliding Window Without the Pain
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Redis Rate Limiting for APIs: Sliding Window Without the Pain

#typescript #node #hono #ioredis
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11 min read
The Anatomy of a Modified PDF: What Our Algorithm Detects
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The Anatomy of a Modified PDF: What Our Algorithm Detects

#pdf #forensics #webdev
1
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7 min read
From CTO to Freelancer: What 12 Years in Technical Leadership Taught Me
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From CTO to Freelancer: What 12 Years in Technical Leadership Taught Me

#career #freelance #leadership #cto
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7 min read
Digital Signatures vs. Metadata: What Proves PDF Authenticity
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Digital Signatures vs. Metadata: What Proves PDF Authenticity

#pdf #security #metadata #fraud
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7 min read
Server-Side Tracking: GA4 + Meta CAPI Without Losing 40% of Your Conversions
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Server-Side Tracking: GA4 + Meta CAPI Without Losing 40% of Your Conversions

#nextjs #typescript #googleanalytics #metacapi
1
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11 min read
Invoice Fraud: How Criminals Modify PDFs to Steal Money
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Invoice Fraud: How Criminals Modify PDFs to Steal Money

#pdf #security #fraud #webdev
2
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8 min read
PDF Generation on the Server: Puppeteer vs @react-pdf/renderer (A Production Comparison)
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PDF Generation on the Server: Puppeteer vs @react-pdf/renderer (A Production Comparison)

#nextjs #typescript #node #puppeteer
1
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11 min read
Has This PDF Been Edited? 5 Ways to Check Instantly
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Has This PDF Been Edited? 5 Ways to Check Instantly

#pdf #tutorial #webdev
1
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7 min read
Turborepo Monorepo: Next.js 15 Frontend + Hono 4 Backend in One Repo
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Turborepo Monorepo: Next.js 15 Frontend + Hono 4 Backend in One Repo

#nextjs #typescript #hono #turborepo
1
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10 min read
Detect PDF Tampering Programmatically: Developer Guide
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Detect PDF Tampering Programmatically: Developer Guide

#pdf #security #node #typescript
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6 min read
5 Signs a PDF Document Has Been Tampered With
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5 Signs a PDF Document Has Been Tampered With

#pdf #security #fraud
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7 min read
React Masonry Layout: Why the Popular Reorder Trick Fails
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React Masonry Layout: Why the Popular Reorder Trick Fails

#masonry #css #react #javascript
2
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7 min read
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