Developer Experience Keynote (45 min) Main Stage 2027-05-12T09:00 2027-05-12T09:45 Every engineering organisation is really a machine for shortening the distance between a question and its answer. This keynote looks at what changes structurally when that loop drops under ten minutes — in tooling, in team shape, and in what people are willing to attempt. Albus Dumbledore Platform & Infra Talk (30 min) Room 2A 2027-05-12T09:00 2027-05-12T09:30 Canaries, feature flags and automated rollback sound great until the first incident where all three disagree. Here is the decision tree we use, the four metrics that actually gate a rollout, and the postmortem that made us delete half our tooling. Remus Lupin Platform & Infra Talk (30 min) Room 2B 2027-05-12T09:00 2027-05-12T09:30 Our monorepo CI took 40 minutes on a good day. This talk walks through how we cut it to 6 minutes with content-addressed caching, remote execution, and a test-selection model — including the two migrations that failed first. You'll leave with a decision framework for which incremental-build investments pay off at which repo sizes, and the graphs to convince your platform team. Hermione Granger, Harry Potter Platform & Infra Workshop (120 min) Workshop Lab 2027-05-12T11:00 2027-05-12T13:00 A hands-on session where we build a working internal developer platform from an empty repository: golden paths, a service catalogue, a paved-road CI template and a self-service environment. Bring a laptop with Docker installed. Ginny Weasley Developer Experience Panel (45 min) Main Stage 2027-05-12T14:00 2027-05-12T14:45 Three engineering leaders argue about where developer productivity should live: in a platform team, in every team, or nowhere at all. Expect disagreement about metrics and at least one strong opinion about DORA. Molly Weasley, Nymphadora Tonks, Kingsley Shacklebolt AI Engineering Talk (30 min) Main Stage 2027-05-13T09:30 2027-05-13T10:00 Agent evaluations are flaky, expensive and easy to fool. This talk covers the harness we run on every pull request: deterministic seeds, judge calibration, cost budgets, and the tripwires that catch a regression before it reaches a customer. Cho Chang Developer Experience Lightning Talk (10 min) Room 2A 2027-05-13T10:15 2027-05-13T10:25 Ten minutes on the release ritual that took us from monthly, terrifying deployments to Friday afternoon shrugs — and the three rules we never break. Ron Weasley AI Engineering Talk (30 min) Room 2B 2027-05-13T11:00 2027-05-13T11:30 Recall@10 on a static corpus tells you almost nothing about a retrieval system that ingests two million documents a day. We cover index rebuild strategies, hybrid search tuning and the operational costs nobody puts in the benchmark table. Cedric Diggory AI Engineering Talk (30 min) Room 2A 2027-05-13T14:00 2027-05-13T14:30 Prompts are code with none of the safety. This session shows how we version prompts, snapshot their outputs, score drift with a cheap judge, and gate deploys on the result — plus what happened the week we turned the gate off. Harry Potter Platform & Infra Talk (30 min) Main Stage 2027-05-14T10:00 2027-05-14T10:30 If your platform has users, it has churn, onboarding and a roadmap. We ran our platform group as a product team for two years: here is the research cadence, the adoption metric we settled on, and the two features we deleted. Fleur Delacour AI Engineering Talk (30 min) Room 2B 2027-05-14T11:00 2027-05-14T11:30 Traces for agent runs look nothing like traces for request/response services: they branch, retry and argue with themselves. This talk covers the span model we settled on, cost attribution per step, and how to debug a run that took forty tool calls. Kingsley Shacklebolt