Artur Kondas

Founder · Fractional CTO · Engineering Leader

I don't do proofs of concept. I ship products people pay for.

Payments at European-bank scale. A paying app built solo in under six weeks. I help founders build engineering that ships - as advisor or fractional CTO, or all in with one team.

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01Proof, not adjectives

0 → 400+ Users, built solo, in under 8 weeks, profitable from day 1 Tonika
0 → 70k/day Chat at 9.4M-customer scale, live in 2 weeks Barclays
millions/mo Payments shipped at EBA scale Form3
70% Faster delivery cycles via an AI agentic framework SpotOn

02How I can help

All in

For one funded team, I go all the way in - full-time, founding engineering, exclusive. My outcome tied to yours: equity and a real seat, not a day rate. I take one bet at a time, so I choose it carefully.

Short of that -

Advisor

About to make an architecture or hiring call you can't undo? Get a senior technical head in the room before you commit.

Fractional CTO

Too early for a full-time CTO, too critical to wing it. Part-time technical leadership that keeps you from getting the expensive things wrong.

Hands-on lead

Team stalled, or no team yet? I join you and do the work: hiring, architecture, delivery, from zero or from stuck.

03Track record

Form3 · Barclays · BP · SpotOn

Tonika: 0 → 400+ users in under 8 weeks, around 60% two-week retention, shipped solo to web, iOS, and Android.

Speaking: GopherCon UK · ContainerDays · DevBCN

04Get in touch

Building something where the engineering decisions matter? Tell me what you're working on.