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$
USD
I will build a custom business website with booking system and ai chatbot
Balint D
About this gig
Need a fast, professional website that does more than look good? I build custom websites that take bookings, send emails and can answer your clients with an AI assistant.
Choose your level:
- Launch: a fast, accessible site with SEO, live in 3 days
- Grow: adds a backend with custom booking calendar, contact form emails and editable content
- Automate: adds an AI assistant that answers from your content and books appointments
Recent work:
- dominiksarkany.com: bilingual site for a sport psychologist, built in 3 days
- opendrone.space: bilingual drone-airspace web app with maps and a daily data backend
- balintdecsi.dev: my portfolio with a downloadable CV
Stack: React, TypeScript, TanStack Start or Next.js, Tailwind, Supabase, Cloudflare. Clean code you own, hosted on your own accounts.
Why work with me:
- Engineer first: I also build data platforms and AI agents
- Multilingual sites: English, German, Hungarian, Spanish
- GDPR-aware, EU hosting options
- Accessibility and performance built in
Please message me before ordering with your goals and any example sites you like.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Balint D
Balint D
Data Engineer
- FromHungary
- Member sinceSep 2026
- Avg. response time1 hour
- Last deliveryabout 7 hours
Languages
Hungarian, English, Spanish, German
I am a Data Engineer and CTO with practical knowledge in telco companies and geospatial analytics on Google Cloud. I have experience in deep learning for biomedical imaging and leading technical strategy for AI-native products. I am an active builder in hacker spaces, creating web apps for visual storytelling and scalable data pipelines.
My Portfolio
FAQ
Who pays hosting, domain and AI usage?
You do, on your own accounts (typically a few euros a month; AI usage depends on traffic). I set everything up for you.
Do I own the code?
Yes. You get the repository and admin access to every account.
Can the booking sync with Google Calendar?
Yes. Bookings can sync with Google Calendar or cal.com, with email confirmations and reminders.
What if the AI assistant answers wrongly?
It only answers from your content, refuses when unsure and hands over to you by email.
Which languages can my site have?
Any; I work in English, German, Hungarian and Spanish. Extra languages are an extra.
Is it GDPR compliant?
I use EU hosting regions when requested and can add a privacy page and cookie consent with the GDPR extra. Legal text review is your lawyer's job.
What do you need to start?
Your logo, texts, photos, services and two–three websites you like. No texts yet? Tell me and we plan around it.
What counts as a revision?
A round of changes to the delivered design or content within the package scope. New pages or features are extras.
Can you redesign my existing website?
Yes. Send me the link and I'll confirm the right package.
