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Work

From telecom infrastructure to VC platforms to university classrooms. Each role taught me something different about building things that last.

Consentio logo
Director of Engineering·2023 - now

Consentio

Leading engineering at Consentio, a digital trading platform for the fresh produce industry. 7,000+ users, 1,000+ producers digitalised, serving clients like Aldi, Carrefour, and Kroger across 4 countries.

Cantoo logo
Co-Founder & CTO·2021 - acquired

Cantoo

Built a cloud telecom platform from scratch, offering Voice, SMS, and DID services to operators across Europe. Profitable in under two years at €400k/year revenue. Acquired by 42com.

Harbour.Space University logo
Lecturer·2021 - now

Harbour.Space University

Created and teach the "Developer to CTO" Master module at Harbour.Space University in Barcelona, guiding students through project management, system design, and building sustainable ventures.

OneRagtime logo
CTO·2017 - 2019

OneRagtime

Designed and built the tech backbone of OneRagtime, a European VC platform with €150M AUM, 50+ portfolio companies, and 250+ investors. Built and led the tech team in Barcelona.

Kamina.io logo
Founder & CEO·2019 - now

Kamina.io

My studio for engineering consulting and product development. Subscription-based model for SaaS companies across Europe. 40+ teams shipped, 99.99% uptime SLA.

Legos logo
Telecom Architect·2015 - 2016

Legos

Managed critical telecom infrastructure at Legos, the first IMS operator in France. 110 countries, 1.2 billion minutes/year, 360 million SMS/year, 100 operators on the platform.

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© 2026 Romain Untereiner

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