https://jbnjs.com/weeklyhttps://jbnjs.com/aboutweeklyhttps://jbnjs.com/searchweeklyhttps://jbnjs.com/y/2026weeklyhttps://jbnjs.com/y/2025weeklyhttps://jbnjs.com/y/2024weeklyhttps://jbnjs.com/y/2023weeklyhttps://jbnjs.com/y/2022weeklyhttps://jbnjs.com/y/2021weeklyhttps://jbnjs.com/notes/the-year-i-stopped-chasing-the-framework2026-08-27monthlyhttps://jbnjs.com/uploads/2026-framework.jpgThe year I stopped chasing the frameworkAngular, React, whatever is next. Prototype where it adds value. Do not chase the logo.https://jbnjs.com/notes/eleven-years-of-building-still-curious2026-08-27monthlyhttps://jbnjs.com/uploads/2026-eleven.jpgEleven years of building, still curiousA 2026 look back — fresher at Knowledge Lens, TPM at Rockwell, still learning by shipping.https://jbnjs.com/notes/a-blog-i-actually-maintain2026-08-27monthlyhttps://jbnjs.com/uploads/2026-blog.jpgA blog I actually maintainMarkdown, FastAPI, React. Own the archive. Not a SaaS theme.https://jbnjs.com/notes/agents-edit-files-they-do-not-own2026-08-27monthlyhttps://jbnjs.com/uploads/2026-files.jpgAgents edit files they do not ownScope, secrets, PRs. The agent has no memory of the customer.https://jbnjs.com/notes/what-i-still-verify-by-clicking2026-08-27monthlyhttps://jbnjs.com/uploads/2026-click.jpgWhat I still verify by clickingGenerated UI that looks right. You still click empty, error, and mobile.https://jbnjs.com/notes/still-full-stack-as-a-tpm2026-08-27monthlyhttps://jbnjs.com/uploads/2026-tpm.jpgStill full stack as a TPMLeading delivery without losing the ability to open the code.https://jbnjs.com/notes/the-note-i-still-write-by-hand2026-08-27monthlyhttps://jbnjs.com/uploads/2026-hand-note.jpgThe note I still write by handAgents draft the recap. I still copy the decision into a notebook before I send it.https://jbnjs.com/notes/performance-work-the-model-cannot-see2026-08-27monthlyhttps://jbnjs.com/uploads/2026-perf.jpgPerformance work the model cannot seeIt suggested memoization. The cost was fonts and an unindexed query.https://jbnjs.com/notes/you-still-need-the-map2026-08-27monthlyhttps://jbnjs.com/uploads/2026-map.jpgYou still need the mapAgents edit files. They do not know why billing is denormalized.https://jbnjs.com/notes/the-demo-that-worked-on-the-laptop2026-08-27monthlyhttps://jbnjs.com/uploads/2025-demo.jpgThe demo that worked on the laptopStaging data, a seed, and the network that was not my home Wi-Fi.https://jbnjs.com/notes/the-summary-that-skipped-the-migration2026-08-27monthlyhttps://jbnjs.com/uploads/2025-migration.jpgThe summary that skipped the migrationA fluent write-up, no rollback, and a PR I almost trusted because it read so well.https://jbnjs.com/notes/what-i-still-refuse-to-let-a-model-decide2026-08-27monthlyhttps://jbnjs.com/uploads/2025-refuse.jpgWhat I still refuse to let a model decideAuth, money, deletions, and anything I cannot undo in one deploy.https://jbnjs.com/notes/a-team-that-uses-models-differently2026-08-27monthlyhttps://jbnjs.com/uploads/2025-team-models.jpgA team that uses models differentlyShared hygiene: secrets, review, and the work we still do without a prompt.https://jbnjs.com/notes/the-generated-ui-that-almost-compiled2026-08-27monthlyhttps://jbnjs.com/uploads/2025-generated-ui.jpgThe generated UI that almost compiledLast year's component API, a green chat, and a screen that lied until I clicked it.https://jbnjs.com/notes/shipping-with-an-agent-without-shipping-its-taste2026-08-27monthlyhttps://jbnjs.com/uploads/2025-agent-taste.jpgShipping with an agent without shipping its tasteI write the shape. It fills. Then I delete the tutorial voice.https://jbnjs.com/notes/designing-is-the-heart-of-development2026-08-27monthlyhttps://jbnjs.com/uploads/2025-design.jpgDesigning is the heart of developmentEmpty states, permissions, and the failure path the mock never showed.https://jbnjs.com/notes/they-asked-for-a-colour-and-the-schema-needed-a-state2026-08-27monthlyhttps://jbnjs.com/uploads/2024-schema-state.jpgThey asked for a colour and the schema needed a stateThe stakeholder wanted orange. What they meant was a row we had never stored.https://jbnjs.com/notes/databricks-in-the-delivery-loop2026-08-27monthlyhttps://jbnjs.com/uploads/2024-databricks.jpgDatabricks in the delivery loopThe web app sat on top of a warehouse. I had to get my hands in it, not only schedule the job.https://jbnjs.com/notes/leading-multiple-web-application-projects2026-08-27monthlyhttps://jbnjs.com/uploads/2024-tpm.jpgLeading multiple web application projectsTPM across tech, teams, customers, and delivery — context switching without dropping the thread.https://jbnjs.com/notes/two-customers-one-calendar2026-08-27monthlyhttps://jbnjs.com/uploads/2024-two-customers.jpgTwo customers, one calendarBoth wanted that week. Neither was wrong. The calendar was the product.https://jbnjs.com/notes/a-good-prompt-is-a-good-ticket2026-08-27monthlyhttps://jbnjs.com/uploads/2024-prompt.jpgA good prompt is a good ticketContext, files, what not to touch, and how we will know it worked — the same spec I already owed the team.https://jbnjs.com/notes/copilot-made-me-faster-and-worse-at-explaining2026-08-27monthlyhttps://jbnjs.com/uploads/2024-copilot.jpgCopilot made me faster and worse at explainingI merged a function I could not walk through in standup. The tests were green.https://jbnjs.com/notes/how-to-upskill-the-team2026-08-27monthlyhttps://jbnjs.com/uploads/2024-upskill.jpgHow to upskill the teamPairing, a first ticket that is real, and reading the scary part of the stack together.https://jbnjs.com/notes/how-to-encourage-the-team2026-08-27monthlyhttps://jbnjs.com/uploads/2024-encourage.jpgHow to encourage the teamNoticing the hard week, credit in the room that counts, and a small win that actually shipped.https://jbnjs.com/notes/done-means-the-empty-state-too2026-08-27monthlyhttps://jbnjs.com/uploads/2024-empty-state.jpgDone means the empty state tooGreen pipeline, happy path on my laptop, and a first-time user staring at a blank table.https://jbnjs.com/notes/leadership-qualities2026-08-27monthlyhttps://jbnjs.com/uploads/2024-leadership.jpgLeadership qualitiesClarity, a Friday deploy that went quiet, and the next step written on the board.https://jbnjs.com/notes/the-customer-call-that-rewrote-the-ticket2026-08-27monthlyhttps://jbnjs.com/uploads/2023-customer.jpgThe customer call that rewrote the ticketThe solution was already in the sprint. Then a stakeholder said how they actually work.https://jbnjs.com/notes/elasticsearch-when-the-table-could-not-take-it2026-08-27monthlyhttps://jbnjs.com/uploads/2023-elasticsearch.jpgElasticsearch when the table could not take itThe dashboard was honest. The SQL was not fast enough to stay honest.https://jbnjs.com/notes/docker-and-the-deploy-that-was-not-ftp2026-08-27monthlyhttps://jbnjs.com/uploads/2023-docker.jpgDocker and the deploy that was not FTPCompose, env per stage, a checklist, and a rollback that was not 'copy the old folder back'.https://jbnjs.com/notes/same-work-a-different-badge2026-08-27monthlyhttps://jbnjs.com/uploads/2023-rockwell.jpgSame work, a different badgeKnowledge Lens was acquired. The craft did not reset. The org chart did.https://jbnjs.com/notes/collaboration2026-08-27monthlyhttps://jbnjs.com/uploads/2023-collaboration.jpgCollaborationFrontend, backend, and product in the same week — 45 minutes of contract, not eight hours of waiting.https://jbnjs.com/notes/the-rollback-i-wrote-before-the-click2026-08-27monthlyhttps://jbnjs.com/uploads/2023-rollback.jpgThe rollback I wrote before the clickThe migration was ready. The undo was not. That was the actual work.https://jbnjs.com/notes/why-requirement-gathering-is-so-important2026-08-27monthlyhttps://jbnjs.com/uploads/2023-requirements.jpgWhy requirement gathering is so importantWe built it right. It was still wrong. The states and the users were never in the ticket.https://jbnjs.com/notes/estimates-that-died-on-the-frontend2026-08-27monthlyhttps://jbnjs.com/uploads/2023-estimates.jpgEstimates that died on the frontendBackend said two days. Then came empty, error, mobile, and the plant Wi-Fi.https://jbnjs.com/notes/owning-one-vertical-button-to-migration2026-08-27monthlyhttps://jbnjs.com/uploads/2023-vertical.jpgOwning one vertical: button to migrationDesign, API, migration, and the rollback I wrote before I touched production.https://jbnjs.com/notes/sql-that-scared-the-frontend-engineer2026-08-27monthlyhttps://jbnjs.com/uploads/2022-sql-scared.jpgSQL that scared the frontend engineer (also me)I loaded the table into the browser and filtered it. Then the table had real rows, and JavaScript was not a database.https://jbnjs.com/notes/the-first-api-i-designed-from-the-screen-backward2026-08-27monthlyhttps://jbnjs.com/uploads/2022-screen-api.jpgThe first API I designed from the screen backwardI mocked the page first. Five round-trips later I admitted the endpoint should look like the screen.https://jbnjs.com/notes/teaching-the-difference-between-state-and-storage2026-08-27monthlyhttps://jbnjs.com/uploads/2022-state-storage.jpgTeaching the difference between state and storageI called localStorage a cache. Two tabs taught me it is a shared disk with no opinions.https://jbnjs.com/notes/auth-that-looked-like-a-checkbox-until-refresh-tokens2026-08-27monthlyhttps://jbnjs.com/uploads/2022-refresh-tokens.jpgAuth that looked like a checkbox until refresh tokensRemember me was a tick box. Safari, a dead logout, and a refresh token we could not kill.https://jbnjs.com/notes/when-the-ui-was-honest-and-the-data-model-was-lying2026-08-27monthlyhttps://jbnjs.com/uploads/2022-data-model.jpgWhen the UI was honest and the data model was lyingThe badge said Approved. The row had two timestamps and no word for what we were showing.https://jbnjs.com/notes/the-bug-that-lived-in-three-layers2026-08-27monthlyhttps://jbnjs.com/uploads/2022-three-layers.jpgThe bug that lived in three layersUI said done, API said 200, the job said success. One request id showed they were lying together.https://jbnjs.com/notes/authentication-vs-authorization2026-08-27monthlyhttps://jbnjs.com/uploads/2021-auth.jpgAuthentication vs authorizationLogin is not permission. 401 is not 403. The endpoint still ran after we hid the button.https://jbnjs.com/notes/rbac-system-implementation2026-08-27monthlyhttps://jbnjs.com/uploads/2021-rbac.jpgRBAC system implementationRoles vs permissions, a hidden button, and the admin shortcut I regretted.https://jbnjs.com/notes/importance-of-responsive-web-design2026-08-27monthlyhttps://jbnjs.com/uploads/2021-responsive.jpgImportance of responsive web designThe toolbar wrapped, the table overflowed, and I stopped designing only for my laptop.https://jbnjs.com/notes/modern-web-application-development2026-08-27monthlyhttps://jbnjs.com/uploads/2021-modern-web.jpgModern web application developmentIn 2021 "modern" for us was SPA plus API, a real database, env files, and a deploy that was not FTP.https://jbnjs.com/notes/hands-on-reactjs-project2026-08-27monthlyhttps://jbnjs.com/uploads/2021-react.jpgHands-on ReactJS projectAfter Angular, the page looked simple. Then the form submitted twice and the list showed yesterday's row.https://jbnjs.com/notes/starting-a-new-project-with-angular2026-08-27monthlyhttps://jbnjs.com/uploads/2021-angular.jpgStarting a new project with Angularng new, a fat src folder, and the first time I trusted the CLI more than my own folders.https://jbnjs.com/notes/cors-issues-and-how-to-solve-them2026-08-27monthlyhttps://jbnjs.com/uploads/2021-cors.jpgCORS issues and how to solve themWorking in my machine it was fine. Chrome on staging had other plans.