DEV Community

Iurii Rogulia profile picture

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

Pin Pinned

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 1
8 min read
Structured Logging in Next.js with Pino (Request IDs to stdout)
iurii_rogulia profile

Structured Logging in Next.js with Pino (Request IDs to stdout)

#nextjs #typescript #pino #observability
6
Comments 1
9 min read

Want to connect with Iurii Rogulia?

Create an account to connect with Iurii Rogulia. You can also sign in below to proceed if you already have an account.

Create Account
Already have an account? Sign in
Fake Tax Return and Transcript Fraud: The PDF Forensic Layer 4506-C Misses
iurii_rogulia profile

Fake Tax Return and Transcript Fraud: The PDF Forensic Layer 4506-C Misses

#pdf #fintech #fraud #webdev
Comments
14 min read
The VIES Consultation Number for Finance Teams
iurii_rogulia profile

The VIES Consultation Number for Finance Teams

#tax #tutorial #europe #fintech
1
Comments
7 min read
Three small design decisions in a "toggle effects via CSS class" library, and the tradeoffs behind them
iurii_rogulia profile

Three small design decisions in a "toggle effects via CSS class" library, and the tradeoffs behind them

#css #frontend #javascript #webdev
2
Comments
4 min read
A Typed MDX Content Pipeline with Velite (Next.js Tutorial)
iurii_rogulia profile

A Typed MDX Content Pipeline with Velite (Next.js Tutorial)

#nextjs #typescript #mdx #architecture
Comments
8 min read
Right-to-Work and I-9 Document Fraud: The Tampered PDF Your Compliance Check Misses
iurii_rogulia profile

Right-to-Work and I-9 Document Fraud: The Tampered PDF Your Compliance Check Misses

#pdf #fintech #fraud #webdev
Comments
15 min read
What Is VIES? A Guide for Finance Teams
iurii_rogulia profile

What Is VIES? A Guide for Finance Teams

#tax #tutorial #webdev
Comments
7 min read
Is Your Software Quote Honest? A Buyer's Guide
iurii_rogulia profile

Is Your Software Quote Honest? A Buyer's Guide

#business #estimation #consulting #decision
Comments
8 min read
Expense Report Fraud Detection: The Altered Receipt PDF Your Controls Never Inspect
iurii_rogulia profile

Expense Report Fraud Detection: The Altered Receipt PDF Your Controls Never Inspect

#pdf #fintech #fraud #webdev
Comments
12 min read
When to Validate a Customer's VAT Number
iurii_rogulia profile

When to Validate a Customer's VAT Number

#tax #tutorial #webdev
Comments
8 min read
WebSocket Reconnection Done Right: Backoff, Jitter, and Replay
iurii_rogulia profile

WebSocket Reconnection Done Right: Backoff, Jitter, and Replay

#typescript #node #websockets #api
Comments
10 min read
Mortgage Gift Letter Fraud: The Donor Statement Your Underwriting Never Inspects
iurii_rogulia profile

Mortgage Gift Letter Fraud: The Donor Statement Your Underwriting Never Inspects

#pdf #fintech #fraud #webdev
Comments
14 min read
Validate Dutch VAT Numbers (BTW-id) in Node.js
iurii_rogulia profile

Validate Dutch VAT Numbers (BTW-id) in Node.js

#tax #webdev #api
1
Comments
11 min read
Batch PDF Generation in Node.js Without Running Out of Memory
iurii_rogulia profile

Batch PDF Generation in Node.js Without Running Out of Memory

#node #typescript #reactpdf #puppeteer
1
Comments
7 min read
How to Tell if a PDF Was Flattened: Print-to-PDF as a Fraud Evasion Tactic
iurii_rogulia profile

How to Tell if a PDF Was Flattened: Print-to-PDF as a Fraud Evasion Tactic

#pdf #forensics #fraud #webdev
Comments
11 min read
Storing Customer VAT IDs in PostgreSQL
iurii_rogulia profile

Storing Customer VAT IDs in PostgreSQL

#tax #webdev
1
Comments 2
9 min read
AI for Small Business: What Actually Saves Money
iurii_rogulia profile

AI for Small Business: What Actually Saves Money

#business #ai #automation #decision
Comments
5 min read
Altered Paystubs and W-2s: The Forensic Layer Mortgage Underwriting Misses
iurii_rogulia profile

Altered Paystubs and W-2s: The Forensic Layer Mortgage Underwriting Misses

#pdf #fintech #fraud #webdev
1
Comments
13 min read
What a VAT Check Returns Beyond Valid or Invalid
iurii_rogulia profile

What a VAT Check Returns Beyond Valid or Invalid

#tax #tutorial #webdev
1
Comments
8 min read
B2B Quote-to-Order Flow in Next.js: A State Machine That Doesn't Drift
iurii_rogulia profile

B2B Quote-to-Order Flow in Next.js: A State Machine That Doesn't Drift

#nextjs #react #typescript #postgres
1
Comments
10 min read
Snappt vs Docuverus: Tenant Fraud Tools Compared
iurii_rogulia profile

Snappt vs Docuverus: Tenant Fraud Tools Compared

#pdf #fintech #fraud #api
Comments
11 min read
Handling VIES Errors in Code (Every Error Code)
iurii_rogulia profile

Handling VIES Errors in Code (Every Error Code)

#tax #webdev
Comments
8 min read
API Key Management for a Public SaaS API
iurii_rogulia profile

API Key Management for a Public SaaS API

#typescript #node #hono #drizzle
Comments
11 min read
Fake Salary Slip Detection: Catching the Edited Payslip BGV Misses
iurii_rogulia profile

Fake Salary Slip Detection: Catching the Edited Payslip BGV Misses

#pdf #fintech #fraud #webdev
1
Comments
12 min read
Validate Italian VAT Numbers (Partita IVA) in Node.js
iurii_rogulia profile

Validate Italian VAT Numbers (Partita IVA) in Node.js

#tax #webdev
Comments
8 min read
When a Human Is Your Integration
iurii_rogulia profile

When a Human Is Your Integration

#business #integration #operations #decision
Comments
6 min read
PDF Generator Fingerprints: What Software Made This File (And Where It Lies)
iurii_rogulia profile

PDF Generator Fingerprints: What Software Made This File (And Where It Lies)

#pdf #webdev
2
Comments 1
11 min read
Build vs Buy: VAT Validation via VIES or an API
iurii_rogulia profile

Build vs Buy: VAT Validation via VIES or an API

#tax #webdev
1
Comments
9 min read
PDF Integrity Report: July 2026
iurii_rogulia profile

PDF Integrity Report: July 2026

#pdf #fraud #webdev
1
Comments
8 min read
Preventing Overselling: Inventory Locks Under Concurrent Checkouts
iurii_rogulia profile

Preventing Overselling: Inventory Locks Under Concurrent Checkouts

#nextjs #typescript #node #postgres
Comments 1
10 min read
How Lenders Verify Bank Statements — and the Forgery Layer They Miss
iurii_rogulia profile

How Lenders Verify Bank Statements — and the Forgery Layer They Miss

#pdf #fintech #webdev
Comments
11 min read
How to Bulk Re-Validate Customer VAT IDs
iurii_rogulia profile

How to Bulk Re-Validate Customer VAT IDs

#tax #webdev
1
Comments
9 min read
Programmatic SEO with hreflang: One Joke, 17 Languages, Server-Rendered
iurii_rogulia profile

Programmatic SEO with hreflang: One Joke, 17 Languages, Server-Rendered

#javascript #node #express #programmaticseo
Comments
9 min read
PDF Tamper Detection API for Ruby on Rails: Integration Guide
iurii_rogulia profile

PDF Tamper Detection API for Ruby on Rails: Integration Guide

#pdf #tutorial #api #fraud
1
Comments
17 min read
What Is a VAT ID? A Plain Guide
iurii_rogulia profile

What Is a VAT ID? A Plain Guide

#tax #tutorial #europe #webdev
1
Comments
7 min read
Your Software Works, But Nobody Can Safely Change It
iurii_rogulia profile

Your Software Works, But Nobody Can Safely Change It

#business #legacy #modernization #decision
1
Comments
7 min read
PDF Tamper Detection API for C#: ASP.NET Core Integration Guide
iurii_rogulia profile

PDF Tamper Detection API for C#: ASP.NET Core Integration Guide

#pdf #tutorial #api #fraud
1
Comments
18 min read
VAT ID Format vs Valid: What a Real Check Confirms
iurii_rogulia profile

VAT ID Format vs Valid: What a Real Check Confirms

#tax #tutorial #webdev
Comments
8 min read
Gated B2B Pricing in Next.js: Hiding Prices Behind Per-Customer Access
iurii_rogulia profile

Gated B2B Pricing in Next.js: Hiding Prices Behind Per-Customer Access

#nextjs #react #typescript #postgres
Comments
10 min read
TamperCheck Alternative: Deterministic PDF Tamper Detection
iurii_rogulia profile

TamperCheck Alternative: Deterministic PDF Tamper Detection

#pdf #fintech #api #forensics
Comments
13 min read
Validate VAT Numbers at Signup Without Blocking
iurii_rogulia profile

Validate VAT Numbers at Signup Without Blocking

#tax #webdev
1
Comments
9 min read
Subscription Billing: The Edge Cases Stripe Docs Skip
iurii_rogulia profile

Subscription Billing: The Edge Cases Stripe Docs Skip

#nextjs #typescript #node #postgres
Comments
13 min read
Klippa Alternative: A Self-Serve PDF Tamper Detection API
iurii_rogulia profile

Klippa Alternative: A Self-Serve PDF Tamper Detection API

#pdf #fintech #api #forensics
Comments
12 min read
Hiring Your First Developer: 5 Questions That Filter Out 80%
iurii_rogulia profile

Hiring Your First Developer: 5 Questions That Filter Out 80%

#fractionalcto #hiring #engineeringmanagement #startup
1
Comments 1
11 min read
VerifyPDF Alternative: Structural PDF Tamper Detection API
iurii_rogulia profile

VerifyPDF Alternative: Structural PDF Tamper Detection API

#pdf #fintech #api #forensics
Comments
11 min read
Webhook Security Beyond the Signature Check
iurii_rogulia profile

Webhook Security Beyond the Signature Check

#nextjs #typescript #node #api
1
Comments
11 min read
Ocrolus Alternative: A Self-Serve PDF Tamper Detection API
iurii_rogulia profile

Ocrolus Alternative: A Self-Serve PDF Tamper Detection API

#pdf #fintech #api #forensics
Comments
11 min read
Validate Polish VAT Numbers (NIP) in Node.js
iurii_rogulia profile

Validate Polish VAT Numbers (NIP) in Node.js

#tax #webdev
Comments
10 min read
Fortiro Alternative: A Self-Serve PDF Tamper Detection API
iurii_rogulia profile

Fortiro Alternative: A Self-Serve PDF Tamper Detection API

#pdf #fintech #api #forensics
Comments
10 min read
Why 'Two Weeks' Always Means Six — and How to Estimate Honestly
iurii_rogulia profile

Why 'Two Weeks' Always Means Six — and How to Estimate Honestly

#fractionalcto #projectmanagement #softwareestimation #engineeringpractice
1
Comments 1
12 min read
Resistant AI Alternative: PDF Tamper Detection API
iurii_rogulia profile

Resistant AI Alternative: PDF Tamper Detection API

#pdf #fintech #api #fraud
1
Comments
9 min read
Snappt Alternative: A Self-Serve PDF Fraud Detection API for Rental & Beyond
iurii_rogulia profile

Snappt Alternative: A Self-Serve PDF Fraud Detection API for Rental & Beyond

#pdf #fintech #api #fraud
1
Comments
8 min read
PDF Tamper Detection API for Java: Spring Boot Integration Guide
iurii_rogulia profile

PDF Tamper Detection API for Java: Spring Boot Integration Guide

#pdf #tutorial #api #webdev
Comments
17 min read
Feature Flags Without LaunchDarkly: A 100-Line Solution
iurii_rogulia profile

Feature Flags Without LaunchDarkly: A 100-Line Solution

#typescript #node #postgres #saas
2
Comments 3
11 min read
Adobe Producer Spoofing: A PDF Metadata Forgery Case Study
iurii_rogulia profile

Adobe Producer Spoofing: A PDF Metadata Forgery Case Study

#pdf #forensics #webdev
Comments
9 min read
Isomorphic Canvas Rendering: One draw() in Browser and Node
iurii_rogulia profile

Isomorphic Canvas Rendering: One draw() in Browser and Node

#javascript #node #napirscanvas #express
Comments 1
10 min read
PDF Tamper Detection API for Go: Integration Guide
iurii_rogulia profile

PDF Tamper Detection API for Go: Integration Guide

#pdf #tutorial #api #webdev
Comments
16 min read
Adding Semantic Search to Internal Docs in 200 Lines
iurii_rogulia profile

Adding Semantic Search to Internal Docs in 200 Lines

#typescript #node #postgres #ai
2
Comments 2
11 min read
SBA-7a Loan Stip Fraud Detection: Post-PPP Lessons
iurii_rogulia profile

SBA-7a Loan Stip Fraud Detection: Post-PPP Lessons

#pdf #fintech #fraud #api
Comments
9 min read
My Checklist for Reviewing AI-Generated Code
iurii_rogulia profile

My Checklist for Reviewing AI-Generated Code

#aicoding #codereview #engineering #webdev
Comments
13 min read
loading...