Derek Li

• Working on the Confluent VS Code extension, built it from the ground up to bring the best developer experience and meet developers where they are.
• Integrated GitHub Copilot by providing Kafka and Confluent context plus specialized tools so the LLM can assist with intent-aware workflows.

• Product owner for Azure Logic Apps developer experience. Led the redesign of the visual designer with brand new interaction, visual design, and a scalable framework based on React Flow.
• Designed and shipped features such as smart recommendations based on GPT-2.5, VS Code integrations for DevOps flow, and inline JavaScript code execution for advanced workloads.

• Chrome extension available on the Chrome Web Store .
• Chrome extension activated on LinkedIn profile pages to support HR and hiring managers.
• Parses profile data (name, experience, recommendations) to generate summaries, highlights, concerns, and screening questions.
• Optional job description input to calculate a role-fit score.
• Frontend extension with a backend service on ACI that handles LLM calls, rate limiting, and prompt injection protection.

Built with GitHub Copilot and OpenAI gpt-5 and gpt-5-codex

• clrviz.com helps crews compare how different cinema cameras interpret color so footage matches across a project.
• Visualizes camera color science in chromaticity diagrams trusted by Holleywood directors, cinematographers, and DITs.
• Supports LUT preview so images can be processed with 3D cube LUTs for before and after review.

Built with OpenAI gpt-5.1-codex-max

• Owned the full stack of a hardware + software system, from Fusion 360 mechanical design and manufacturing through embedded setup, to software engineering.
• Dual-camera system per lane: one for the target, one for the booth, creating a theme-park-style photo experience with safe, full-context range footage.
• Custom computer vision (OpenCV/YOLO) detects the target per lane, auto-crops, and adjusts zoom, exposure, and other parameters based on conditions.
• End-to-end pipeline: range staff control, recording, customer preview, Stripe payment, and video delivery via custom code.

Scaffolded with OpenAI OpenAI gpt-5.0, developed with OpenAI gpt-5.0-codex and OpenAI gpt-5.1-codex-max, with memory leak and performance fixes investigated with Anthropic claude-opus-4.5.

• Smart iOS alarm that adjusts wake times based on user-defined conditions like weather, market events, and daily constraints.
• Users set earliest/latest wake windows plus conditional rules (sunny run mornings, market open triggers, or sleep-in defaults).
• Uses AlarmKit, ActivityKit, and background refresh tasks with backend condition checks and push notifications for reliable rescheduling.

Interface prototyped with Figma Make. Built with OpenAI gpt-5.2-codex

In my personal time, I design and model in Fusion 360, operate a 4-axis CNC machining center, lathe, and shaper in my garage shop, and on the additive manufacturing side, I prototype with FDM & SLA printers, and make end-use parts with Formlabs Fuse 1 / Sift 1 selective laser sintering system in my home office.

I can talk about UX design, cloud architecture, and real-time data streaming, but I can also spend hours discussing generative design, design-for-manufacturing, volumetric lattices, and holding sub-thou tolerances and micron-level precision.