Romàn Czerny

Romàn Czerny is a French SaaS founder best known as the co-founder and go-to-market lead of GojiberryAI, an AI sales agent that finds B2B prospects showing buying intent and runs the outreach to book meetings. Gojiberry is one of the highest-revenue products on TrustMRR, with about $424,000 in verified monthly recurring revenue in October 2026.

Czerny started making money online in 2019, first as a freelancer and then through affiliate marketing and info products. Czerny's TrustMRR page lists several of those earlier businesses, which together brought in millions of dollars in revenue and funded the move into software. In 2023 Czerny got into SaaS and, with Pierre-Eliott Lallemant, built CoCo AI, a WhatsApp-marketing app for Shopify stores that the founders say reached about $500,000 in annual recurring revenue before it was sold in 2025 for a seven-figure sum.

Gojiberry came out of the tactic that had sold CoCo AI. While prospecting, the founders noticed that e-commerce founders who were engaging with relevant topics on LinkedIn replied and converted far better than leads scraped from generic databases. Czerny first sold the idea as a manual service with a slide deck and virtual assistants, got close to $10,000 a month, then shut that down and automated the workflow as software with CTO Dylan Teixeira. The product reached $27,000 MRR in December 2025, about $50,000 a month later and $300,000 by July 2026.

Czerny built that growth in public on X and LinkedIn and is known for stacking distribution channels: founder-led content, outbound, Reddit, creators and sponsored newsletters, a lifetime affiliate program, short-form UGC and paid ads, cutting each one that stops paying back. Gojiberry joined Y Combinator's Spring 2026 batch and has a team of about seven, based in Paris.

Czerny is a good example of the post-ChatGPT generation of French indie founders who validate with services first, then use AI agents to productise what already works.