Oncel Cebeci ยท Notebook Product leader and AI systems builder with 18+ years across brand, consumer products, enterprise platforms, and AI-first software. Designer at the core, with hands-on range across product strategy, roadmap shaping, GTM systems, analytics, agentic workflows, inference paths, backend logic, and cross-platform product surfaces. Building with ML/AI since 2019, before it became a default product layer. https://www.oncelcebeci.com/ 2026-05-03T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com https://www.oncelcebeci.com/ Astro https://www.oncelcebeci.com/notes/ai-ontology When agents need a world 2026-05-03T00:00:00.000Z 2026-05-03T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Better AI memory needs structure, provenance, scope, and consent, because agents need to know which world they are acting in. https://www.oncelcebeci.com/notebook/tiny-things-story Tiny Things, the studio 2026-05-01T00:00:00.000Z 2026-05-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Single-person product organisation. Local-first, native, opinionated. https://www.oncelcebeci.com/notebook/manwe Manwe 2026-04-15T00:00:00.000Z 2026-04-15T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com AI doesn't need better answers. It needs better disagreement. https://www.oncelcebeci.com/notebook/kiwa Kiwa 2026-04-14T00:00:00.000Z 2026-04-14T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A generative production studio for image, video, audio, and text. https://www.oncelcebeci.com/notebook/the-agency-years The Agency years 2026-04-01T00:00:00.000Z 2026-04-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Six years in advertising taught me to defend a position before defending a render. https://www.oncelcebeci.com/notebook/notchlive NotchLive 2026-03-15T00:00:00.000Z 2026-03-15T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Live captions for every Mac app. Private. On-device. In your notch. https://www.oncelcebeci.com/notes/manwe Better disagreement 2026-03-10T00:00:00.000Z 2026-03-10T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com I am building Manwe as a room for thinking, where AI helps decisions survive evidence, disagreement, memory, and pressure. https://www.oncelcebeci.com/notes/we-just-played We just played. 2026-02-14T00:00:00.000Z 2026-02-14T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Most of prompt engineering is just reload, adjust, retry. Gamers have been doing that since before AI existed. https://www.oncelcebeci.com/notebook/notchpad NotchPad 2026-02-01T00:00:00.000Z 2026-02-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Your private text inbox. One hover away. https://www.oncelcebeci.com/notebook/signal-news Signal News 2026-01-01T00:00:00.000Z 2026-01-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com All the news that matters. Nothing else. https://www.oncelcebeci.com/notebook/2025-08-tiny-things Founded Tiny Things, an independent studio for AI-native and native software. 2025-08-01T00:00:00.000Z 2025-08-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Founded Tiny Things, an independent studio for AI-native and native software. https://www.oncelcebeci.com/notebook/content-manager Content Manager 2025-04-01T00:00:00.000Z 2025-04-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com One workspace for assets, comments, and approvals across creative teams. https://www.oncelcebeci.com/notebook/90-seconds-rebuild 90 Seconds Rebuild 2022-06-01T00:00:00.000Z 2022-06-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Rebuilt a decade-old global video platform without breaking the customers who already trusted it. https://www.oncelcebeci.com/notebook/vavda Vavda 2021-06-01T00:00:00.000Z 2021-06-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A call-center platform for analytics, voice review, and role-specific operations workflows. https://www.oncelcebeci.com/notebook/stella Stella 2021-04-01T00:00:00.000Z 2021-04-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A first AI/ML interface for business data, built before the wave. https://www.oncelcebeci.com/notebook/belowmrkt belowmrkt 2019-09-01T00:00:00.000Z 2019-09-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Adaptive property search that learned from how people browsed. https://www.oncelcebeci.com/notebook/2019-07-90-seconds Joined 90 Seconds as Head of UX & Design. 2019-07-01T00:00:00.000Z 2019-07-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Joined 90 Seconds as Head of UX & Design. https://www.oncelcebeci.com/notebook/braive Braive 2019-06-01T00:00:00.000Z 2019-06-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A mental health platform that stayed calm under clinical weight. https://www.oncelcebeci.com/notebook/icered IceRed 2019-05-01T00:00:00.000Z 2019-05-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Event management platform for a Hong Kong startup, built in under three months. https://www.oncelcebeci.com/notebook/travelbook Travelbook 2019-02-01T00:00:00.000Z 2019-02-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Social travel platform that grew into planning, booking, and discovery without losing its community. https://www.oncelcebeci.com/notebook/yesmom Yesmom 2018-09-01T00:00:00.000Z 2018-09-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A fertility and pregnancy companion that turned health data into daily reassurance. https://www.oncelcebeci.com/notebook/shop-99 Shop 99 2018-08-01T00:00:00.000Z 2018-08-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Conversational commerce, before chat-as-interface was an idea. https://www.oncelcebeci.com/notebook/fineo Fineo 2018-04-01T00:00:00.000Z 2018-04-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A learning platform for finance, law, and business professionals. https://www.oncelcebeci.com/notebook/workhiro Workhiro 2017-09-01T00:00:00.000Z 2017-09-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A data-first hiring platform that read candidates as people, not as keyword matches. https://www.oncelcebeci.com/notebook/sisu Sisu 2017-04-01T00:00:00.000Z 2017-04-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Android app for a Thailand-based consumer startup. Led design from concept to launch. https://www.oncelcebeci.com/notebook/2016-03-nimble Joined Nimble, a product studio for startups and enterprise clients. 2016-03-01T00:00:00.000Z 2016-03-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Joined Nimble, a product studio for startups and enterprise clients. https://www.oncelcebeci.com/notebook/mcc MCC 2015-09-01T00:00:00.000Z 2015-09-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com A web platform for a century-old community, designed to outlast its own redesigns. https://www.oncelcebeci.com/notebook/2015-08-side-projects Independent product work for founders and small teams. 2015-08-01T00:00:00.000Z 2015-08-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Independent product work for founders and small teams. https://www.oncelcebeci.com/notebook/betbull BetBull 2015-05-01T00:00:00.000Z 2015-05-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com MVP for a London-based sports betting startup that helped close $80M+ in funding. https://www.oncelcebeci.com/notebook/2015-04-betbull-joined Joined BetBull as Senior Product Designer. 2015-04-01T00:00:00.000Z 2015-04-01T00:00:00.000Z Oncel Cebeci oncelcebeci@gmail.com Joined BetBull as Senior Product Designer.