Abstract
Register
$2,995, Conference (3 days). Current pricing ends November 10th. All pass options.
76%
senior dev or higher
1:11
speaker ratio
60+
practitioners
QCon San Francisco 2026 is a three day conference for senior software engineers, architects and team leads. An international program committee of working engineers selects every session. Patterns and practices, not products and pitches.
Slides & video
Slides Not available
Video Not available
Part of the track
Modern API Design for Humans and Agents Hosted by Krys Flores Staff Software Engineer @Crunchyroll, Host of O'Reilly's The Staff Engineer's Career RoadmapFrom the same track
Monday 16 November
10:35 Pacific DEKJ Session APIs That Can't Afford to Be Wrong: Lessons from Moving Money Fawziyah Alebiosu Software Engineer @Imprint Most API design advice assumes a forgiving environment: retries are cheap, data has a single source of truth, and a slow response is only an inconvenience. Financial infrastructure assumes none of that. Card networks give you three seconds to auth or decline. 11:45 Pacific DEKJ Session Everything I Knew About Developer Experience Is Wrong for Agents Emmanuel Paraskakis Founder & CEO @Level 250 Most of what we know about developer experience we learned from humans. Agents are a different user, and some of our best practices quietly work against them. 13:35 Pacific DEKJ Session Developer Experience The Schema Was Never Enough: The World in Protocols Ryan Scott Brown Building infrastructure @Render, Previously Principal @Crunchyroll, @Red Hat, and @Vendia Every reliable process in the world is a protocol: auctions, double-entry bookkeeping, brokerage account transfers, or APIs. Protocols reduce ambiguity but the world remains messy. 14:45 Pacific DEKJ Session No New Backend: The API Layer Behind 800+ Agent-Built Apps at Duolingo Sarah Deitke Senior Software Engineer @Duolingo At Duolingo, anyone (engineer or not) can describe an internal tool and get a working app back, deployed against real company systems. That's BuildingHub, and 350 Duolingo employees have created at least one app with it. 15:55 Seacliff D Unconference Unconference: Modern API Design 17:05 Pacific DEKJ Session Modern APIs Stop Fighting the Remodel: API Design for Models That Outgrew Their Boundaries Aarti Gupta Staff Engineer @Netflix Every domain model has a breaking point. At Netflix, ours arrived all at once—Ads, Games, Live events, and entirely new kinds of content. Each pulled the core entities in different, sometimes contradictory directions.