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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
iurii_rogulia profile

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

#pdf #security #forensic #fraud
Comments
8 min read
PostNord API and Zoho Desk Automation: Production Gotchas
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PostNord API and Zoho Desk Automation: Production Gotchas

#typescript #node #bullmq #stripe
2
Comments
8 min read

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Contract Fraud: How Altered PDFs Bypass Legal Review
iurii_rogulia profile

Contract Fraud: How Altered PDFs Bypass Legal Review

#pdf #fintech #fraud #api
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9 min read
PDF Tamper Detection API for Python: Complete Integration Guide
iurii_rogulia profile

PDF Tamper Detection API for Python: Complete Integration Guide

#pdf #tutorial #api #webdev
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10 min read
Next.js 16 proxy.ts Migration: From middleware.ts
iurii_rogulia profile

Next.js 16 proxy.ts Migration: From middleware.ts

#nextjs #typescript #security #migration
1
Comments 1
12 min read
Business Process Automation Case Study: 40 Hours/Month Saved
iurii_rogulia profile

Business Process Automation Case Study: 40 Hours/Month Saved

#business #automation #process #webdev
Comments
3 min read
PDF Forensics Without the Original File: One-Sided Fraud Detection
iurii_rogulia profile

PDF Forensics Without the Original File: One-Sided Fraud Detection

#pdf #tutorial #forensics #api
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6 min read
Freelance Developer vs IT Partner: What's the Difference?
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Freelance Developer vs IT Partner: What's the Difference?

#business #itstrategy #leadership #cto
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3 min read
Fake Invoice Detection: What PDF Metadata Reveals
iurii_rogulia profile

Fake Invoice Detection: What PDF Metadata Reveals

#pdf #tutorial #fraud #api
Comments
6 min read
Reverse-Charge VAT for B2B SaaS: Node.js Implementation Checklist
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Reverse-Charge VAT for B2B SaaS: Node.js Implementation Checklist

#tax #webdev #europe
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10 min read
React Email + Resend Tutorial: Transactional Emails with PDF Invoices
iurii_rogulia profile

React Email + Resend Tutorial: Transactional Emails with PDF Invoices

#nextjs #typescript #react #reactemail
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10 min read
KYC PDF Blind Spot: Bank Statement Fraud Your Stack Misses
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KYC PDF Blind Spot: Bank Statement Fraud Your Stack Misses

#pdf #fintech #api #fraud
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8 min read
Automate Diploma Fraud Detection with a PDF Checking API
iurii_rogulia profile

Automate Diploma Fraud Detection with a PDF Checking API

#pdf #fintech #api #fraud
Comments
9 min read
Self-Hosting Node.js API: Caddy, Docker Compose, VPS
iurii_rogulia profile

Self-Hosting Node.js API: Caddy, Docker Compose, VPS

#typescript #node #hono #docker
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9 min read
I Ran My Business With AI for 30 Days: Results and Lessons
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I Ran My Business With AI for 30 Days: Results and Lessons

#fun #webdev
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7 min read
Detect PDF Tampering Programmatically: Developer Guide
iurii_rogulia profile

Detect PDF Tampering Programmatically: Developer Guide

#pdf #tutorial #api #webdev
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7 min read
Validate French VAT Numbers (TVA) in Node.js
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Validate French VAT Numbers (TVA) in Node.js

#tax #webdev #api
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9 min read
Why Does My PDF Show a Future Creation Date?
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Why Does My PDF Show a Future Creation Date?

#pdf #tutorial #webdev
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5 min read
Fractional IT Partner vs In-House IT Department: Cost Breakdown
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Fractional IT Partner vs In-House IT Department: Cost Breakdown

#business #itstrategy #automation #cto
1
Comments
4 min read
Publishing One Package to Five Registries with GitHub Actions
iurii_rogulia profile

Publishing One Package to Five Registries with GitHub Actions

#typescript #python #php #go
Comments
9 min read
HTPBE? vs. iDenfy vs. Manual Review: Document Fraud Detection Compared
iurii_rogulia profile

HTPBE? vs. iDenfy vs. Manual Review: Document Fraud Detection Compared

#pdf #fintech #fraud #api
Comments
10 min read
IT Audit Checklist: What to Expect in Week One
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IT Audit Checklist: What to Expect in Week One

#business #itstrategy #process #cto
Comments
4 min read
PDF Integrity Report: March 2026
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PDF Integrity Report: March 2026

#pdf #fraud #webdev
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11 min read
5 Signs Your Business IT Setup Is Costing You Money
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5 Signs Your Business IT Setup Is Costing You Money

#business #itstrategy #cto #webdev
Comments
5 min read
Introducing HTPBE? Quantum: PDF Tamper Detection Before the Document Exists
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Introducing HTPBE? Quantum: PDF Tamper Detection Before the Document Exists

#pdf #webdev
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7 min read
VIES Consultation Number: What It Is and How to Store It
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VIES Consultation Number: What It Is and How to Store It

#tax #webdev #europe
1
Comments
7 min read
No IT Manager? The Hidden Cost of Unmanaged IT for SMBs
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No IT Manager? The Hidden Cost of Unmanaged IT for SMBs

#business #itstrategy #leadership #cto
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4 min read
PDF Fraud Prevention: 10 Best Practices for Businesses
iurii_rogulia profile

PDF Fraud Prevention: 10 Best Practices for Businesses

#pdf #security #fraud #api
Comments
6 min read
PDF Metadata Forensics: A Complete Field-by-Field Reference
iurii_rogulia profile

PDF Metadata Forensics: A Complete Field-by-Field Reference

#pdf #webdev
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11 min read
Next.js Blog View Counter with Upstash Redis (Tutorial)
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Next.js Blog View Counter with Upstash Redis (Tutorial)

#nextjs #typescript #redis #vercel
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8 min read
What “Inconclusive” Really Means: A Guide to Understanding HTPBE? Detection Results
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What “Inconclusive” Really Means: A Guide to Understanding HTPBE? Detection Results

#pdf #webdev
1
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6 min read
UUID v7 vs v4: PostgreSQL Performance Benchmark
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UUID v7 vs v4: PostgreSQL Performance Benchmark

#typescript #node #uuid #ulid
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12 min read
Validate German VAT Numbers (USt-IdNr.) in Node.js
iurii_rogulia profile

Validate German VAT Numbers (USt-IdNr.) in Node.js

#tax #webdev
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6 min read
Document Fraud Statistics 2026: The $12.5 Billion Crisis
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Document Fraud Statistics 2026: The $12.5 Billion Crisis

#pdf #fraud #webdev
Comments
11 min read
Binary Search Explained: How It Works (Visualized)
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Binary Search Explained: How It Works (Visualized)

#fun #algorithms #interactive #webdev
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3 min read
SVG Keyframe Animation in Pure CSS (No Library)
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SVG Keyframe Animation in Pure CSS (No Library)

#typescript #react #animation #performance
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13 min read
The Hidden Cost of Fake Invoices: $127,000 Lost Per Incident
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The Hidden Cost of Fake Invoices: $127,000 Lost Per Incident

#pdf #security #fraud #webdev
Comments
8 min read
Validate EU VAT Numbers in Claude Desktop, Cursor, and ChatGPT — Official MCP Server
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Validate EU VAT Numbers in Claude Desktop, Cursor, and ChatGPT — Official MCP Server

#showdev #tax #ai #webdev
2
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4 min read
How to Spot Fake Invoices: A Complete Guide
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How to Spot Fake Invoices: A Complete Guide

#pdf #security #fraud #api
Comments
5 min read
Next.js Dynamic OG Images: Fix the Turbopack CPU Hang
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Next.js Dynamic OG Images: Fix the Turbopack CPU Hang

#nextjs #typescript #turbopack #satori
1
Comments 6
11 min read
AI-Generated Fake Documents: What PDF Metadata Can Detect
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AI-Generated Fake Documents: What PDF Metadata Can Detect

#pdf #fintech #fraud #webdev
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7 min read
E-commerce Order Automation: Stripe + Invoice + Shipping Workflow
iurii_rogulia profile

E-commerce Order Automation: Stripe + Invoice + Shipping Workflow

#nextjs #typescript #node #bullmq
1
Comments 2
8 min read
What Is PDF? The History and Evolution of the World's Document Format
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What Is PDF? The History and Evolution of the World's Document Format

#pdf #webdev
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7 min read
EU VAT Number Validation in Next.js (VIES API Tutorial)
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EU VAT Number Validation in Next.js (VIES API Tutorial)

#nextjs #typescript #redis #taxvat
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9 min read
PDF Integrity Report: February 2026
iurii_rogulia profile

PDF Integrity Report: February 2026

#pdf #fraud #webdev
Comments
7 min read
EU VAT Rate Types Explained: Standard, Reduced, Super-Reduced, Parking, and Territorial Rates
iurii_rogulia profile

EU VAT Rate Types Explained: Standard, Reduced, Super-Reduced, Parking, and Territorial Rates

#tax #webdev
Comments
10 min read
Next.js SaaS Checklist: Launch Production-Ready in 8 Weeks
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Next.js SaaS Checklist: Launch Production-Ready in 8 Weeks

#nextjs #typescript #drizzle #betterauth
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12 min read
Common PDF Editing Tools and How We Detect Their Traces
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Common PDF Editing Tools and How We Detect Their Traces

#pdf #forensics #api #webdev
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6 min read
How to Handle VIES Downtime in Your Application
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How to Handle VIES Downtime in Your Application

#tax #webdev
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3 min read
Stripe Webhooks: Idempotency, Retries, and Queue Setup
iurii_rogulia profile

Stripe Webhooks: Idempotency, Retries, and Queue Setup

#nextjs #typescript #node #bullmq
1
Comments
9 min read
EU VAT Rates 2026 — Complete Country-by-Country Guide for Developers
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EU VAT Rates 2026 — Complete Country-by-Country Guide for Developers

#tax #europe #webdev
1
Comments
4 min read
How to Check a PDF Before Payment: 7-Step Checklist
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How to Check a PDF Before Payment: 7-Step Checklist

#pdf #tutorial #fraud #webdev
Comments
7 min read
Technical SEO for Next.js: SSR, JSON-LD, and Sitemaps
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Technical SEO for Next.js: SSR, JSON-LD, and Sitemaps

#nextjs #react #typescript #seo
1
Comments
3 min read
How to Report a Modified PDF to the Sender: A Professional Guide
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How to Report a Modified PDF to the Sender: A Professional Guide

#pdf #tutorial #fraud #forensics
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6 min read
How to Detect Tampered PDFs (Forensics Tutorial)
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How to Detect Tampered PDFs (Forensics Tutorial)

#nextjs #typescript #pdflib #pdf
1
Comments
9 min read
Understanding PDF Metadata: What Your Documents Reveal
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Understanding PDF Metadata: What Your Documents Reveal

#pdf #tutorial #metadata #webdev
Comments
7 min read
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
Comments
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
Comments
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
Comments
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
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