Süleyman Çelik logo Süleyman Çelik

Frankfurt am Main, Germany

Süleyman Çelik

Founder & CEO, Melasoft GmbH·Founder, Melahub OÜ·Founder, MelaCapital

I founded Melasoft in 2013 and have run it since. Our Docnova platform processes electronic invoicing, e-despatch, SAF-T and digital reporting for enterprises in more than fifty countries.

Alongside it I run Melahub, a software development company in Estonia, and invest early through MelaCapital. I started as a developer in 2011. I still read the code.

Read what I write → The companies

Licensed or accredited as a provider in

  • 🇩🇪 Germany
  • 🇫🇷 France
  • 🇦🇪 UAE
  • 🇲🇾 Malaysia
  • 🇸🇰 Slovakia
  • 🇳🇱 Netherlands
  • 🇪🇸 Spain
  • + more
2013Year I founded Melasoft. Still running it.
50+Countries the platform operates in
2030ViDA horizon we are already reporting against
3Companies founded and held

Companies

Three companies. One thesis.

Own the layer that other businesses cannot switch off. Everything I have built sits underneath something a company depends on — an invoice that has to be legally valid, or an evening someone has already decided to spend.

Founder & CEO Melasoft GmbH

E-invoicing, compliance & digital reporting

The core business. We absorb the difference between fifty-plus national rulebooks so a finance team does not have to — holding provider licences and accreditations wherever a market demands one, and moving fastest into the countries where a mandate is about to land.

Docnova · docnova.aiE-invoicing · e-despatch & e-waybill · AP automation (Docnova Flow) · debt collection · cash flow · SAF-T reporting · ViDA and digital reporting — posted natively into SAP and any ERP, with no PDF detour and no OCR.
  • Frankfurt am Main
  • Founded 2013
  • 50+ countries
 Founder Melahub OÜ

Software development company, Estonia

Our engineering arm. It builds the software behind the group and the products that would never survive an enterprise roadmap review — small teams, short cycles, shipped rather than announced.

Melaloco · melaloco.comEvent discovery and social app. Find events and people near you, filtered by location, date and type. Performers get their own accounts to reach an audience directly.
  • Estonia
  • Engineering & product
  • Independent P&L
 Founder MelaCapital

Early-stage & angel investment

I back technical founders at the earliest stage, mostly in B2B software and the infrastructure around regulation, payments and compliance. I invest in businesses I could have built myself, which is a narrow filter and deliberately so.

What I look forTechnical founders at pre-seed and seed. A regulatory tailwind with a date and a penalty attached. Europe, primarily. Long holding periods — I am not looking for a quick exit.
  • Pre-seed · Seed
  • B2B & regulated infrastructure
  • Europe

How I operate

Four things I believe, tested against payroll.

Not a philosophy. Just the conclusions that survived thirteen years of being wrong in public.

Regulation creates markets.Most companies read a mandate as a cost line. It is a distribution channel with a legal deadline attached. Every jurisdiction that rewrites its invoicing rules hands a functioning product a reason to be bought — which is why we move into a country before the mandate lands, not after.
Own the boring layer.Consumer attention is rented and repriced every quarter. A system that a finance department cannot legally switch off is not. I would rather be essential than exciting.
Technical judgment does not expire.I stopped writing production code years ago. I did not stop being able to tell when an architecture is wrong, or when a vendor is selling a demo. That is most of what a technical CEO is actually for.
Decide slowly, then leave it alone.The discipline that compounds a company is the same one that compounds a portfolio. The expensive mistakes are almost never the decision — they are the revisiting of it six weeks later.

What I write about

A developer’s view from the CEO chair.

There is no shortage of people writing about compliance from the outside, or about leadership from a stage. I write from the narrow overlap: someone who has to sign the contract and could still debug the integration.

Regulation as strategyHow mandates in Europe, the Gulf and Asia create and destroy markets — and how to read a deadline as a product roadmap.
Building from EuropeRunning a German GmbH and an Estonian OÜ side by side. Licensing, accreditation, and what it costs to operate across fifty jurisdictions.
Technical decisions at CEO levelWhen to say no to the AI answer, why we post XML natively instead of running OCR, and how to tell architecture from theatre.
Developer to operatorWhat actually changes when you stop shipping code and start allocating people and capital. Nobody warns you about the middle.
Capital and patienceInvesting early in things I understand, and the long-term positions I hold. Notes on discipline, not recommendations.
Learning in publicMy only real hobby is learning. Some of what I read turns into a company. Most of it just turns into a better question.

Latest

Recent writing

The three most recent pieces. The full archive, sorted by topic, is on the articles page.

Browse the archive →

If you are building something in this space

Enterprise compliance, a mandate deadline you are behind on, or an early-stage company you think I should look at — I read everything that arrives.

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