A coach for the calls you handle yourself.

Co-founded Avo (open-source Rails admin, Y Combinator S21 interview) and Basetool (database admin tool, Y Combinator W22 interview) with brother Adrian Marin. Avo hit #2 Product of the Day on Product Hunt. Adrian continues Avo solo today.

Sussur is the third take. This time the product is on-device real-time sales coaching for the SMB and mid-market sales teams the enterprise tools price out.

Eight years across the YC ecosystem and at enterprise scale. Waydev (YC W21) as an early engineer for startup-velocity discipline. The Social Cat as lead dev on an influencer marketing platform. Amdocs on the Vodafone enterprise engagement. Deloitte Digital on the consultancy side.

BSc Computer Science, University of Twente (2019). Best Thesis Award in the Data Science track. Co-author of Effectiveness of neural language models for word prediction of textual mammography reports (Marin, Mocanu, Seifert), IEEE Xplore 2020.

Ironman finisher.

Sussur shipped a working macOS app in three months of solo execution. Every layer: macOS audio capture, on-device speech-to-text via NVIDIA Parakeet TDT, the coaching loop against a cloud model provider, RAG pipeline, six-signal rapport algorithm, persona memory, post-call report.

Product updates links to the published app releases.