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Helban/README.md

Adam K

C++ embedded engineer, 10 years, now freelancing. I build fast websites, Python web scrapers and Chrome MV3 extensions. Lean code, no bloat, yours to keep with tests. Every service has a live demo you can click.

→ helban.dev

Live sites

Hand-coded, no WordPress, no framework, no build step.

Site What it is PageSpeed mobile
salon.helban.dev Premium salon, multi-page, JSON-LD 97 · 100 · 100 · 100
kalkulator.helban.dev Landing with a live price calculator 100 · 100 · 100 · 100
dropwatch.helban.dev SaaS product landing 100 · 100 · 100 · 100
wp-speed.helban.dev WordPress speed case study 63 → 99

Numbers are Performance · Accessibility · Best-Practices · SEO on Lighthouse mobile.

Selected repositories

  • price-aggregator: Polish price comparison scraper, httpx + BeautifulSoup, FastAPI UI, fixture tests, CI
  • fmcsa-carrier-lead-scraper: lead-gen scraper over the public FMCSA census, exports Excel + QA sheet
  • whatsapp-ai-bot: WhatsApp Cloud API bot answering with OpenAI, SQLite conversation memory, 28 tests
  • keeptouch: Chrome MV3 Gmail sidebar for contacts you have not emailed in a while, OAuth2 + Gmail API
  • sse-notifier-extension: Chrome MV3 real-time call notifications over SSE
  • airtable-sync: change-aware Airtable upsert, creates new rows, updates changed, skips identical
  • upwork-job-alert: n8n workflow that emails proposal drafts for new job posts

Stack

Python (httpx, BeautifulSoup, Playwright, FastAPI, pandas) · JavaScript and Chrome MV3 · n8n · hand-coded HTML/CSS. Background in C++ embedded.

Reach me through helban.dev, async, Polish or English.

Pinned Loading

  1. airtable-sync airtable-sync Public

    Change-aware Airtable upsert connector in Python: syncs scraped or monitored data into an Airtable base, creating, updating, or skipping rows by key

    Python

  2. keeptouch keeptouch Public

    Gmail sidebar that surfaces contacts you haven't emailed in a while — Chrome extension, MV3, Gmail API

    JavaScript

  3. price-aggregator price-aggregator Public

    Search Polish marketplaces simultaneously and compare prices in a clean browser UI

    Python

  4. quote-calculator-landing quote-calculator-landing Public

    Service landing with an interactive cost calculator and a no-backend lead-capture form. Hand-coded HTML/CSS/JS, Lighthouse-green.

    CSS

  5. customer-support-ai-bot customer-support-ai-bot Public

    WhatsApp bot that replies to customer messages with OpenAI and remembers the conversation. WhatsApp Cloud API, FastAPI, async worker queue, SQLite.

    Python

  6. wp-speed-optimization wp-speed-optimization Public

    HTML 1