From YC to Open Source Payments: How Harrison Telyan Built FlowGlad by Selling Before Building

13/06/2025 28 min
From YC to Open Source Payments: How Harrison Telyan Built FlowGlad by Selling Before Building

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Episode Synopsis

Episode Summary:In this episode of Start. Scale. Exit., Ivan Galvez interviews Harrison Telyan, co-founder of FlowGlad, an open-source payments and billing platform built with developers in mind. Harrison shares how his journey started by redesigning apps in high school, how a cold Imgur redesign earned him a job, and why testing profitably is more valuable than raising capital. He walks us through building products post-YC, bootstrapping FlowGlad with cashflow from his design firm Numi, and what it means to build high-trust, high-performance teams without falling into the “yes-man” trap.Whether you're early-stage, scaling, or just refining your monetization engine—this episode is packed with real-world startup frameworks, founder psychology, and actionable advice.Key Takeaways:Why selling before building is the golden rule of modern startup validationHow to test ideas profitably and avoid building the wrong thingWhy FlowGlad chose to be open source and bootstrap instead of chasing VCsLessons learned from growing design agency Numi to $2M ARRHow travel and taste-building (e.g. museums!) improve product design judgmentWhy hiring based on urgency, clarity, and values is more scalable than resumesGolden Nugget:“We developed an allergic reaction to building before selling. Test profitably. Validate with real conversations, then build.”Mentioned in the Episode:FlowGlad — Open-source billing and payments for developersNumi.tech — Startup design department-as-a-serviceM-Pesa — The mobile payments system that inspired global innovationBook: Moby Dick by Herman MelvilleFavorite App: Robinhood — Best-in-class product design meets investment techConnect with Harrison Telyan:LinkedInFlowGlad.comJoin the FlowGlad DiscordListen Now & Subscribe:Apple Podcast: https://podcasts.apple.com/us/podcast/start-scale-exit-by-sintesys/id1821116362Spotify: https://open.spotify.com/show/67vlE6A7nyoz7imV97qhqKAmazon Music: https://music.amazon.com/podcasts/ffad99ff-f3b7-4ac5-85e8-b85cde4a1c8d/start-scale-exit-by-sintesysOr find us wherever you get your podcasts.Powered by Sintesys.us Sintesys helps SaaS founders scale their platforms and customer experiences with high-performance development and support.

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