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.

Lappeenranta, Finland Joined on Oct 12, 2025 https://iurii.rogulia.fi

Education

Self-taught developer with 25+ years of professional experience

Pronouns

he/him

Work

Senior Full-Stack Developer & Freelancer, Finland

Pinned

Iurii Rogulia

Feb 24

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

#pdf #security #forensic #fraud

8 min read

Iurii Rogulia

Jul 16

My Checklist for Reviewing AI-Generated Code

#aicoding #codereview #engineering #webdev

13 min read

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Iurii Rogulia

Jul 16

PDF Integrity Report: June 2026

#pdf #fraud #webdev

8 min read

Iurii Rogulia

Jul 15

When AI Beats a Senior Developer — and When It Doesn't

#aicoding #engineering #productivity #webdev

10 min read

Iurii Rogulia

Jul 15

Crypto OTC Proof-of-Funds PDF Fraud Detection

#pdf #fintech #fraud #webdev

9 min read

Iurii Rogulia

Jul 14

Idempotency Keys: Building Retries That Don't Double-Charge

#typescript #node #postgres #api

12 min read

Iurii Rogulia

Jul 14

Workers Comp Fraud: Altered Medical and Wage PDFs

#pdf #fintech #fraud #api

9 min read

Iurii Rogulia

Jul 13

Deterministic Wrong: Why a Viral Web Toy Must Be Wrong the Same Way Every Time

#javascript #viralproduct #algorithms #webdev

9 min read

Iurii Rogulia

Jul 13

Large PDFs in Node.js Without Unbounded Buffering

#pdf #tutorial #node #webdev

11 min read

Iurii Rogulia

Jul 12

Stripe to Mollie Migration: What Actually Breaks

#nextjs #typescript #node #drizzle

16 min read

Iurii Rogulia

Jul 12

Tenant Screening SaaS: Bank Statement Fraud Detection

#pdf #fintech #api #fraud

11 min read

Iurii Rogulia

Jul 11

Build an Internal CRM on Supabase: A Weekend-Scale Guide

#nextjs #typescript #drizzle #postgres

16 min read

Iurii Rogulia

Jul 11

Auto F&I Fraud: Forged Pay Stubs in Dealer Financing

#pdf #fintech #fraud #api

13 min read

Iurii Rogulia

Jul 10

Rewrite or Stabilise: The Decision Framework I Use

#rescueprojects #technicalstrategy #legacycode #architecture

9 min read

Iurii Rogulia

Jul 10

PDF Tamper Detection API for Laravel and PHP: Integration Guide

#pdf #tutorial #api #webdev

20 min read

Iurii Rogulia

Jul 9

Multi-Tenant SaaS Database Design: Shared Schema vs Schema-per-Tenant

#typescript #node #drizzle #postgres

14 min read

Iurii Rogulia

Jul 9

Batch PDF Verification at Scale: Async Queue Patterns for the HTPBE API

#pdf #tutorial #api #fraud

18 min read

Iurii Rogulia

Jul 8

HubSpot to Custom CRM Migration: When It's Worth It

#crm #migration #hubspot #operations

17 min read

Iurii Rogulia

Jul 8

PDF Tamper Detection in Next.js: App Router Integration Guide

#pdf #tutorial #nextjs #api

15 min read

Iurii Rogulia

Jul 7

How to Reduce OpenAI API Costs in Production (2026 Guide)

#ai #costoptimization #production #observability

19 min read

Iurii Rogulia

Jul 7

Building a Document Fraud Detection Workflow for Fintech: Beyond KYC

#pdf #tutorial #fraud #api

10 min read

Iurii Rogulia

Jul 6

Best Headless CRM in 2026: Twenty vs EspoCRM vs Custom Build

#crm #opensource #architecture #buildvsbuy

16 min read

Iurii Rogulia

Jul 6

Insurance Claims Fraud: How Altered PDFs Bypass Adjuster Review

#pdf #fintech #fraud #forensics

9 min read

Iurii Rogulia

Jul 5

Technical Due Diligence Checklist Before a Software Rewrite

#rescueprojects #technicalduediligence #engineeringpractice #bestpractices

13 min read

Iurii Rogulia

Jul 5

Payslip Fraud in HR: How Fake Salary Documents Pass Review

#pdf #fintech #fraud #forensics

9 min read

Iurii Rogulia

Jul 4

I Built a 30-Line Chrome Extension to Kill the YouTube Feed

#javascript #html #css #chromeextension

8 min read

Iurii Rogulia

Jul 4

Invoice Fraud in Accounts Payable: Detect Altered PDFs Before Payment

#pdf #fintech #fraud #api

9 min read

Iurii Rogulia

Jul 3

AI Agent Prompts: Guardrails to Prevent Code Disasters

#ai #engineeringpractice #bestpractices #workflow

14 min read

Iurii Rogulia

Jul 3

Rental Fraud: How Tenants Falsify Bank Statements (and How to Catch It)

#pdf #fintech #fraud #forensics

10 min read

Iurii Rogulia

Jul 2

AI Coding for Senior Developers: What to Delegate (and Not)

#ai #engineeringpractice #workflow #bestpractices

12 min read

Iurii Rogulia

Jul 2

PDF Integrity Report: May 2026

#pdf #fraud #webdev

7 min read

Iurii Rogulia

Jul 1

Why AI Coding Widens the Senior–Junior Developer Gap

#ai #engineeringpractice #bestpractices #architecture

13 min read

Iurii Rogulia

Jul 1

Bank Statement Fraud in Lending: What Gets Altered and How to Catch It

#pdf #fintech #fraud #api

9 min read

Iurii Rogulia

Jun 30

Vibe Coding Problems: What AI-Generated Code Gets Wrong

#ai #technicaldebt #architecture #bestpractices

11 min read

Iurii Rogulia

Jun 30

PDF Digital Signature Chain: Detect PDFs Signed Then Modified

#pdf #api #webdev

7 min read

Iurii Rogulia

Jun 29

Health Check Endpoint in Node.js: Liveness vs Readiness

#node #typescript #hono #bullmq

14 min read

Iurii Rogulia

Jun 29

PDF Fraud Detection in Loan Origination

#pdf #fintech #fraud #api

9 min read

Iurii Rogulia

Jun 28

PDF Font Subset Divergence: Forensic Tampering Detection

#pdf #forensics #api #webdev

6 min read

Iurii Rogulia

Jun 28

PostgreSQL Production Checklist: UUIDs, RLS, Indexes, Pooling

#typescript #node #drizzle #postgres

11 min read

Iurii Rogulia

Jun 27

H-1B Salary Slip Fraud Detection: Altered Indian Payslips at the Offer Stage

#pdf #fintech #fraud #webdev

7 min read

Iurii Rogulia

Jun 27

BullMQ vs pg-boss vs Cron: Node.js Background Jobs Compared

#node #typescript #bullmq #pgboss

12 min read

Iurii Rogulia

Jun 26

JWT vs Sessions vs OAuth: Which to Use for SaaS Auth

#nextjs #typescript #node #betterauth

12 min read

Iurii Rogulia

Jun 26

GDPR Document Fraud Detection API: EU Fintech Compliance Guide

#pdf #fintech #api #fraud

8 min read

Iurii Rogulia

Jun 25

Government Document Fraud: PDF Tamper Detection for Public Sector

#pdf #fintech #fraud #api

10 min read

Iurii Rogulia

Jun 25

5 Features That Kill MVPs Before They Launch

#mvp #product #saas #architecture

10 min read

Iurii Rogulia

Jun 24

PDF Forensics API Pricing in 2026: A Transparent Breakdown

#pdf #fintech #api #webdev

9 min read

Iurii Rogulia

Jun 24

AI Document Processing in Production: Full Pipeline Guide

#typescript #python #ai #awstextract

11 min read

Iurii Rogulia

Jun 23

FCA Document Fraud Detection UK: Closing the Gap Your KYC Stack Leaves Open

#pdf #fintech #fraud #api

10 min read

Iurii Rogulia

Jun 23

How to Add AI to an Existing Product Without Rewriting It

#nextjs #typescript #vercelaisdk #postgres

9 min read

Iurii Rogulia

Jun 22

Fractional CTO: What They Do, Cost, and When to Hire One

#leadership #itstrategy #business #freelance

9 min read

Iurii Rogulia

Jun 22

Detect AI-Generated PDFs: What Works and What Does Not

#pdf #tutorial #fraud #forensics

7 min read

Iurii Rogulia

Jun 21

BEC Invoice Fraud Detection API: Stop Redirected Payments

#pdf #fintech #fraud #api

6 min read

Iurii Rogulia

Jun 21

linkinator Tutorial: Find Broken Links in Next.js Sites

#node #typescript #developertools #seo

9 min read

Iurii Rogulia

Jun 20

APRA CPS 234 Document Fraud Detection: A Guide for AU-Licensed Entities

#pdf #fintech #fraud #security

10 min read

Iurii Rogulia

Jun 20

How to Take Over a Codebase from a Web Agency (5-Day Process)

#typescript #node #architecture #technicaldebt

9 min read

Iurii Rogulia

Jun 19

PDF xref Table Forensics: Detect Edits From File Structure

#pdf #forensics #api #webdev

9 min read

Iurii Rogulia

Jun 19

llms.txt for AI Discoverability: Should You Add It?

#seo #architecture #webdev

7 min read

Iurii Rogulia

Jun 18

JSON vs YAML vs TOML vs CSV vs Protobuf: Developer's Guide

#typescript #python #developertools #dataengineering

13 min read

Iurii Rogulia

Jun 18

PDF Tamper Detection in Python: Integrate in Under 50 Lines

#pdf #tutorial #api #webdev

8 min read

Iurii Rogulia

Jun 17

KYC vs Document Forensics: Why KYC Platforms Miss PDF Fraud

#pdf #fintech #forensics #fraud

8 min read

Iurii Rogulia

Jun 17

Building a React Product Configurator with Zustand and Motion

#nextjs #react #typescript #daisyui

9 min read

1 Week Community Wellness Streak

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