Unlogged — Java DevTools Plugin

Unlogged is an open-source IntelliJ IDEA plugin that helps Java developers mock, monitor, replay, and test production traffic locally — with one-click JUnit test generation, runtime mocking, direct method invocation, and performance tracking.

After the team made Y Combinator's Summer 2022 batch, I joined as the design lead — owning plugin UX inside the IDE, the marketing site at unlogged.io (designed in Figma, built in Webflow), and the product's visual identity and branding.

Developer tools live in two worlds at once — dense IDE surfaces where every pixel competes with code, and a marketing site that has to explain bytecode instrumentation, record/replay, and runtime mocking to skeptical backend engineers. Unlogged needed both to feel trustworthy, fast, and approachable without dumbing down the technical story.

I designed end-to-end across the product surface — from IntelliJ plugin flows to the public site and launch assets.

• IntelliJ IDEA plugin UX — record/replay, runtime mocking, JUnit generation, and method performance tracking
• Marketing site designed in Figma and built in Webflow from scratch
• Branding, visual identity, investor decks, and UI animations for the launch site
• Web dashboard app flows and onboarding for developer workflows
• Custom design system adapted from Chakra UI for product surfaces
• UX research, user testing, and prototyping with early customers

• Record and replay — capture method inputs and return values, replay locally without HTTP endpoints
• Runtime mocking — inject mocks for APIs, DB calls, and downstream services with recorded data
• JUnit generation — one-click unit tests from recorded scenarios with framework and serializer choices
• Performance tracking — method-level execution thresholds and bottleneck visibility as you code

Unlogged publicly launched in January 2023 with a cohesive brand, a Webflow marketing site, and plugin UX that made record/replay and automated test generation approachable for Java teams. The product remains open source — helping developers catch regressions early and deploy with more confidence.