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Twofold

Two engineers.Software that doesthe actual work.

Websites, apps, backend services and integrations. Designed, built and maintained by our two-person team.

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Selected work

01 · Residential developer · sales demo

Arkada
new-build sales

Buyers pick a building from its facade, a floor from the plan or a 3D model, and an apartment with its price and room areas.

3D building model · Self-service editing · Bulgarian / English

02 · Pharmacy in Sofia · website rebuild

Helios
homeopharm

A 2012 website and a spreadsheet download became a searchable catalogue of 3,646 remedies, with a price for every form.

Searchable catalogue · Self-service editing · Order requests

03 · Antiquarian bookshop · online store

Bukinistika
rare books

An online shop for antique and rare books in Bulgarian, English and Russian, with a catalogue that keeps itself up to date.

Online shop · Automatic catalogue updates · Bulgarian / English / Russian

04 · Our own product · Vilian & Plamen

vAIced
stories, spoken

Our own product, built together: web novels turned into audiobooks, with a different voice for every character.

A voice for every character · Story player · Website and waiting list

What we build

Websites & web apps
Websites & web apps
Mobile apps
Mobile apps
Desktop apps
Desktop apps
Backend services
Backend services
Integrations
Integrations
Hosting & support
Hosting & support

Twofold is two people. You talk to the ones writing the code, from the first call to the last deploy.

Portrait of Vilian Gerdzhikov

Websites, apps and servers

Vilian Gerdzhikov

Builds web and desktop applications and works on CarrierX's customer portal and backend. Has built over 50 websites and services.

  • Schwarz Hackathon · 1st place
  • AmCham Hackathon 2.0 · Best Team
  • AmCham Hackathon 3.0 · Most Innovative
Portrait of Plamen Ermenkov

Web apps and security

Plamen Ermenkov

Advanced Software Engineer at Palms Bet, with a degree in cybersecurity. Builds web applications, with experience in secure sign-in and card payments.

  • Thesis · secure sign-in
  • Payments · secure card checkout
  • Java · C · TypeScript · PHP

Before you write
to us

The two of us. There is no account manager in between: the people on the call are the people building your product, and you can see both of us on this page.

Yes, that is usually the point. You get a simple editor and full control: change text, photos, products and prices yourself, at any hour, without waiting on us. Helios's staff look after 3,600 products, prices and opening hours this way.

Yes. Helios is in Bulgarian, Arkada in Bulgarian and English, and Bukinistika in Bulgarian, English and Russian. Languages are edited side by side, so adding one later means adding translations, not rebuilding the site.

Good. We move it over for you. Helios's old pages and remedy spreadsheets were carried into the new site, and Bukinistika's catalogue updates itself from its original listings.

We can host it for you on the best, cheapest hosting that fits the project and keep it up to date, or hand everything over to you. Either way, the site is yours.

Email us what you have today: the website, the spreadsheet, the PDF, whatever customers see now. We will reply with what we would build first and roughly what it takes.