# Iurii Rogulia — Senior Full-Stack Software Engineer

> Senior full-stack software engineer based in Finland. 25+ years of production experience building SaaS products, AI systems, e-commerce, integrations, and business automation with TypeScript, React, Next.js, and Python. Open to full-time roles, contract work, or fractional engagements — including fractional CTO. Based in Lappeenranta, Finland.

## Core Pages

- [Home](https://iurii.rogulia.fi/): Overview of services, expertise, and current availability
- [About](https://iurii.rogulia.fi/about): Background, experience, and approach to client work
- [Services](https://iurii.rogulia.fi/services): Full list of services with descriptions and pricing
- [Projects](https://iurii.rogulia.fi/projects): Selected portfolio of shipped projects
- [Reviews](https://iurii.rogulia.fi/reviews): Client testimonials and project feedback
- [Experience](https://iurii.rogulia.fi/experience): Career timeline and technical background
- [CV](https://iurii.rogulia.fi/iurii-rogulia-cv.pdf): Full curriculum vitae (PDF)
- [Contact](https://iurii.rogulia.fi/contact): Project inquiries and availability

## Services

- [Fractional CTO](https://iurii.rogulia.fi/services/fractional-cto): Part-time technical leadership — architecture decisions, team oversight, and tech strategy without a full-time hire
- [MVP Development](https://iurii.rogulia.fi/services/mvp-development): End-to-end MVP builds for SaaS, fintech, and e-commerce — from spec to deployed product in 6–12 weeks
- [E-commerce](https://iurii.rogulia.fi/services/e-commerce): From €8,000 — custom storefronts and B2B ordering platforms with multi-currency, EU VAT, and logistics integrations across 25+ European markets
- [Business Website](https://iurii.rogulia.fi/services/business-website): From €2,400 — custom-built (Next.js) company websites for law firms, agencies, and service companies, with technical SEO from day one
- [AI Integration](https://iurii.rogulia.fi/services/ai-integration): RAG chatbots, document processing, and semantic search added to existing products using OpenAI and Claude — including chatbots on Telegram, WhatsApp, and Slack
- [API & Integrations](https://iurii.rogulia.fi/services/api-integrations): Connecting CRMs, ERPs, payment gateways, and logistics providers with resilient, observable pipelines
- [Automation & Workflows](https://iurii.rogulia.fi/services/automation-workflows): Replacing manual, repetitive work with automated pipelines — order flows, data sync, notifications, scheduled jobs, and Telegram/WhatsApp bots as the front end to internal processes
- [Telegram Bots & Mini Apps](https://iurii.rogulia.fi/services/telegram-bots): From €1,600 — order, booking, support and internal bots with real storage and CRM integration, plus Mini Apps with payments inside Telegram
- [Rescue Projects](https://iurii.rogulia.fi/services/rescue-projects): Honest assessment and recovery plan for stalled, broken, or behind-schedule codebases
- [Technical Due Diligence](https://iurii.rogulia.fi/services/technical-due-diligence): From €1,200 — independent codebase and architecture review for investors and acquirers, written report in 3–5 days
- [Technical Consultation](https://iurii.rogulia.fi/services/technical-consultation): €200 fixed-price session — submit your problem in writing, receive prepared recommendations the next day
- [Technical SEO/GEO Audit](https://iurii.rogulia.fi/services/seo-geo-audit): €800 fixed-price developer's audit — technical SEO, schema, indexing, AI-crawler access and llms.txt review, and per-market keyword research in a written report
- [SEO & AI Search Optimization](https://iurii.rogulia.fi/services/seo-geo-optimization): €1,200/month for the first 6 months, €800/month from month 7, no minimum term — the optimization work itself, not consulting: technical SEO fixes, per-market and per-language keyword research, content and blog production, schema, and visibility in AI answers. Any site, any hosting, any CMS or none; multilingual sites included
- [Paid Ads Management](https://iurii.rogulia.fi/services/paid-ads): Google Ads, Meta and Reddit Ads run for a flat €400/month per channel, no separate setup fee, no percentage of ad spend and no minimum term. Conversion tracking fixed first (server-side, Consent Mode), then keywords, audiences, ad tests, weekly optimization and landing-page fixes. Ad spend is paid by the client directly to the platform; the accounts stay in the client's ownership

## Blog — Business & Strategy

Articles for founders, non-technical managers, and business owners:

- [You Don't Need a Developer. You Need an IT Partner.](https://iurii.rogulia.fi/blog/developer-vs-it-partner): The difference between hiring a coder and having a technical partner who understands the business
- [What a Fractional CTO Actually Does](https://iurii.rogulia.fi/blog/what-fractional-cto-does): Concrete breakdown of responsibilities, when it makes sense, and when it doesn't
- [When Nobody Owns Your IT](https://iurii.rogulia.fi/blog/who-owns-your-it): What happens to businesses that rely on scattered IT without a single accountable person
- [One IT Person Instead of a Department](https://iurii.rogulia.fi/blog/one-person-it-department): Why a single experienced IT partner can outperform a fragmented team
- [5 Signs Your Business IT Is Working Against You](https://iurii.rogulia.fi/blog/5-signs-it-is-holding-you-back): Patterns that indicate IT is a bottleneck, not an enabler
- [How We Saved 40 Hours a Month Without Hiring Anyone](https://iurii.rogulia.fi/blog/automation-saved-40-hours): A real automation case study with before/after process comparison
- [The 5 Features That Kill MVPs Before Launch](https://iurii.rogulia.fi/blog/mvp-features-that-kill-products): Common scope mistakes that delay or kill product launches
- [What I Look at in the First Week](https://iurii.rogulia.fi/blog/it-audit-first-week): The first-week IT audit process when taking over a new client's infrastructure
- [From CTO to Freelancer](https://iurii.rogulia.fi/blog/cto-to-freelancer): Lessons from 12 years as a technical leader applied to independent work

## Blog — Architecture & SaaS

Technical articles for developers and technical founders:

- [How I Build a Production SaaS in 2 Months](https://iurii.rogulia.fi/blog/build-saas-nextjs-checklist): Complete architecture checklist — auth, payments, emails, jobs, monitoring, deployment
- [JWT vs Sessions vs OAuth: Which Auth Pattern for Your SaaS?](https://iurii.rogulia.fi/blog/jwt-sessions-oauth-saas): Practical comparison with real trade-offs for each approach
- [PostgreSQL Patterns I Use in Every Production Project](https://iurii.rogulia.fi/blog/postgresql-production-patterns): Indexing, connection pooling, migrations, and schema patterns
- [Stripe Webhooks Done Right: Production Architecture](https://iurii.rogulia.fi/blog/stripe-webhooks-production): Idempotency, replay protection, and failure handling for Stripe events
- [Background Jobs in Node.js: BullMQ, pg-boss, or Just a Cron?](https://iurii.rogulia.fi/blog/background-jobs-nodejs): Decision framework for job queue selection with practical trade-offs
- [Redis Rate Limiting for APIs: Sliding Window Without the Pain](https://iurii.rogulia.fi/blog/redis-rate-limiting-api): Implementing sliding window rate limiting in production
- [Self-Hosting a Production API on a €6/month VPS](https://iurii.rogulia.fi/blog/self-hosting-caddy-docker-vps): Caddy + Docker Compose setup with zero-downtime deploys
- [UUID v7 in Production: Why Your Database Hates v4](https://iurii.rogulia.fi/blog/uuid-v7-ulid-nanoid): Performance and ordering implications of UUID strategies
- [Health Check Endpoints: What to Check, What to Return, How to React](https://iurii.rogulia.fi/blog/healthcheck-endpoint-production): Production-grade health check implementation patterns

## Blog — AI & Automation

- [How to Add AI to an Existing Product Without Rewriting It](https://iurii.rogulia.fi/blog/add-ai-without-rewriting): Practical integration patterns for adding LLM features incrementally
- [Building a Multilingual RAG Chatbot for E-commerce](https://iurii.rogulia.fi/blog/rag-chatbot-ecommerce): 1,614 docs, 25 languages, 70% ticket resolution rate — architecture and lessons
- [AI Document Processing in Production: PDFs, Invoices, and Contracts](https://iurii.rogulia.fi/blog/ai-document-processing-production): Extraction pipelines, validation, and failure handling for AI-processed documents
- [How I Fully Automated E-commerce Order Processing](https://iurii.rogulia.fi/blog/ecommerce-order-automation): Payment to invoice in 2 minutes — complete pipeline architecture
- [Automating Order Fulfillment: PostNord, Zoho Desk, and CRM in One Pipeline](https://iurii.rogulia.fi/blog/shipping-crm-automation-zoho-postnord): Shipping label generation, ticket creation, and CRM sync in a single workflow

## Blog — Next.js & Frontend

- [How to Build a Next.js App in 30 Languages](https://iurii.rogulia.fi/blog/nextjs-i18n-30-languages): next-intl setup, routing, and content strategy for large-scale i18n
- [Turborepo Monorepo: Next.js 15 + Hono 4 Backend in One Repo](https://iurii.rogulia.fi/blog/turborepo-nextjs-hono-monorepo): Monorepo setup with shared packages, CI, and deployment
- [Dynamic OG Images in Next.js: Why opengraph-image.tsx Hangs Turbopack](https://iurii.rogulia.fi/blog/nextjs-dynamic-og-images): Root cause and workaround for the Turbopack CPU hang with Satori
- [Production Transactional Emails: React Email, Resend, and PDF Attachments](https://iurii.rogulia.fi/blog/transactional-emails-react-email-resend): Email template system with inline PDF invoices via Vercel Blob
- [Server-Side Tracking: GA4 + Meta CAPI Without Losing 40% of Conversions](https://iurii.rogulia.fi/blog/server-side-tracking-ga4-meta): Measurement Protocol and Conversions API implementation

## Blog — SEO & Infrastructure

- [Technical SEO I Build Into Every Project](https://iurii.rogulia.fi/blog/technical-seo-by-default): Schema.org, sitemaps, canonical tags, Core Web Vitals — the full checklist
- [IndexNow: Get Your Pages Indexed in Minutes, Not Weeks](https://iurii.rogulia.fi/blog/indexnow-for-developers): Push-based indexing implementation for Next.js
- [llms.txt: No Major AI Reads It Yet. Add It Anyway.](https://iurii.rogulia.fi/blog/llms-txt-ai-discoverability): Analysis of AI discoverability standards and the asymmetric cost-benefit case
- [Privacy-First Analytics: GDPR-Compliant Tracking Without Cookie Banners](https://iurii.rogulia.fi/blog/privacy-first-analytics-gdpr): Cookieless analytics setup that works across EU markets

## Technical Stack

Languages and runtimes used in production projects: TypeScript, JavaScript, Node.js, Python, Go, PHP, Ruby

Frontend: Next.js, React, Tailwind CSS, Framer Motion, DaisyUI, Zustand, TanStack Query

Backend: Hono, Express, BullMQ, pg-boss, Drizzle ORM, Zod, Better Auth, NextAuth.js

Databases and caching: PostgreSQL, Redis, Upstash, Upstash Vector, Turso

AI and ML: OpenAI (GPT-4o), Anthropic Claude, Vercel AI SDK, RAG, semantic search, assistant-ui, MCP (Model Context Protocol) server development

Payments and e-commerce: Stripe, Klarna, PayPal, EU VAT handling, multi-currency pricing

Integrations: Zoho CRM, Airtable, PostNord, Resend, Mailgun, Telegram, Bybit, GitHub Actions

Infrastructure: Vercel, Docker, Caddy, VPS self-hosting, Sentry, Cloudflare

PDF and documents: Puppeteer, @react-pdf/renderer, pdf-lib, AWS Textract, Google Document AI