I build websites that load instantly (Google PageSpeed 97-100), Python web scrapers, Chrome MV3 extensions and automations. Every service comes with a live demo you can click.
Three sites their owners run today. Each one is shown with the owner's permission, next to what they wrote once the work was done. The numbers carry the date they were measured, because the sites are theirs now and keep changing.
A martial-arts school sold three courses through WooCommerce and a user role. I built a new LearnDash site from scratch where the course is paid for by card with no account needed, and switched it onto the client's domain with the old site kept whole as the way back.
nudda.com Read the case study„He kept the build lean instead of loading it with plugins we did not need.”
Antonio F., Upwork review, 5.0
The cart loaded two complete cart systems at once, classic WooCommerce and the newer React block cart. The cart and checkout went back to the classic version in the shop's own look, and each page now loads only the scripts it needs.
zespokojem.com Read the case study (in Polish)„Koszyk 2,2 sekundy zamiast 11,2 to skok, który realnie pewnie zmieni konwersję.”
Dominik, zespokojem.com
A travel photo archive hand-built in FrontPage since the late nineties: 128 galleries and 4,786 photographs. I moved it onto a WordPress the owner now runs himself, with the look left as it was.
patoczka.net Read the case study„Excellent experience with Adam on restructuring and migrating an old, legacy website to a modern platform (WordPress).”
Jurek P., Upwork review, 5.0
Eight positions, fixed scope, and the starting price written next to each one. Narrow the list or read all of it.
Lean hand-coded site, PageSpeed 97-99, real technical SEO: per-page titles, structured data for Google, a sitemap. Not a page builder.
salon.helban.devOne-page landing with an interactive cost calculator and a working lead form. Price shows instantly, the lead lands in your inbox.
kalkulator.helban.devLighthouse audit, render-blocking and image fixes, measured before and after on the same landing page.
wp-speed.helban.dev · full studyData pulled from a chosen site into a clean Excel, CSV or database: deduped, normalized. The script stays with you, run it whenever you want. Handles JavaScript-heavy pages too.
github.com/Helban/fmcsa-carrier-lead-scraperA Chrome plugin that adds new features to the pages you work on: a side panel, buttons, Gmail or API integrations, secure login. One delivered contract behind these.
github.com/Helban/keeptouchAnswers your customers' messages and remembers each conversation. Resilient by design: duplicate messages filtered out, failed sends retried automatically.
github.com/Helban/whatsapp-ai-botDiagnostic first: written cause and fix plan as milestone 1, the fix and test as milestone 2. No blind quoting on legacy code.
wp-speed.helban.devScrapers of any kind, n8n automations, Airtable, Stripe, KSeF for WooCommerce, WordPress builds. Describe what you need, I quote individually.
An order here buys nothing yet: it prefills the contact form, and the contract with payment comes later, on Useme or Upwork.
Seven projects I built for myself, opened up. The sites with a PageSpeed score also get 100 on accessibility, best practices and SEO, so performance is the only number I print. The Shopify store is a development store behind a password, and PageSpeed would only measure its login page.
Google PageSpeed, mobile, July to October 2026. Scores swing a few points between runs. Click a score to measure it yourself.
A cosmetics store on the Horizon theme. The sections and blocks I added are set up in the theme editor without touching code. Every product page lists the full INCI composition with a plain-language role for each ingredient, and the vitamin C serum has a scroll-driven film rendered in Blender.
kosmetoria.myshopify.com Watch the theme editor, 39 sA pottery studio's shop on Next.js 16 and Cloudflare Workers, with its own API and Stripe payments. The last piece is held by a single conditional write to the database, so two people cannot buy the same piece at once, and only Stripe's signed webhook confirms an order. Payments run in Stripe test mode: card 4242 4242 4242 4242.
shop.helban.dev Code on GitHubA plugin for a store that sells only to approved buyers. A buyer arrives through a sales rep's link and signs in with a code from their email, with no password. Only then do they see the catalog and prices. When a buyer came through a rep's link, the server records that rep on each of their orders. The plugin keeps its data in its own tables, and its 177 integration tests pass with HPOS on and off.
Watch the walkthrough, 77 s Code on GitHubA premium salon, multi-page, with structured data for Google and a contact form that validates before it sends. This is what the company-website package delivers.
salon.helban.devA bloated Elementor build, the same one optimized in place, and a third version written by hand from scratch. Same page, same content, measured on Lighthouse mobile each time. The write-up says where the page-builder ceiling sits and how much speed is really recoverable.
Read the case studyA node editor for AI workflows: wire the nodes, run the graph through the Claude API. A cinema mode turns it into a control room, where light travels down each wire carrying its result and a telemetry console prints every retry with its HTTP code.
orqa.helban.devAn interactive motorcycle showroom: a garage, a model you spin a full 360° with a finger, and points on the photo that jump straight to each component. Bilingual, and still 99-100 on mobile.
voltera.helban.devThe rest, without the write-up: kalkulatordropwatchaurumaethosall case studies
Money, invoice and escrow stay on Useme (PL) or Upwork (EN). You only pay once the contract is signed there.
Click order on a package, or just write what you need. The scope and starting price come with you.
I send a Useme contract (PL) or an Upwork Direct Contract (EN) with the agreed scope and price. You accept and fund it.
I build and deliver. The platform holds the money in escrow and releases it only when you accept the work.
Every demo above is my own work, so of course it flatters me. These are public Upwork reviews, left by the clients who paid for the work. Open my profile and read them there.
Working with Adam was a great experience. Communication was always clear, and he responded quickly to every question I had. He did excellent work on my website and made it easy for me to manage and update it on my own going forward. I really appreciate his professionalism and attention to detail. I would definitely hire him again and highly recommend him to anyone looking for quality web development work.
Adam was an excellent hire for a technically complex project — building a reusable WordPress master template, branded child theme for a portfolio scaling to 50+ sites. He stood out for his diligence — auditing every reference site before building anything and catching a real content bug I hadn't noticed. Throughout the project, he proactively flagged key architectural decisions before building them. Communication was excellent. Highly recommend for complex WordPress automation or systems-building work.
It was a pleasure working with Adam! Great communication and timely solutions! Looking forward to partnering with him on future projects.
Adam rebuilt the NUDDA site from scratch and took it live cleanly. The course pages, checkout, and student area all work, and he kept the build lean instead of loading it with plugins we did not need. He was patient through a long list of details — logins, certificates, payments, the staging-to-live switch — and he explained each step in plain terms when I asked. The launch was organised, with a fall-back in place, and the site came up as planned. Clear, careful, and easy to work with. I would hire him again.
Adam is truly a DocuSign expert, 100% Recommend
He didn't just make something that worked in a simple test — he tested it with large, real-world conversations and a huge number of pictures, investigated problems carefully, and explained everything to me in plain English. When something wasn't working, he didn't disappear or blame the software; he figured out what was happening and fixed it. I especially appreciate that he designed the extension with the future in mind. The Notebook reader and Blogger portion are separated so that if Google changes the Notebook page in the future, the whole system shouldn't have to be rebuilt.
10 years of C++ embedded, where a wasted kilobyte and a leaked handle have consequences. I carry that habit into web work: small payloads, no dead dependencies, code that says what it does.
That is why the sites score PageSpeed 97-100, and the Python scrapers and tools come with tests. You get the source, no lock-in, no monthly rent on your own site.
A short message is enough. I reply in Polish or English, async.
