Thomas DelissenSenior Frontend EngineerCrafting web interfaces in the agentic era.

Senior frontend engineer, designing and building interfaces since 2010. I turn complex systems such as live transit data, market feeds and LLM pipelines into calm, fast and accessible products.

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Selected work

Products, designed and built end to end.

From data pipelines and AI summaries down to the pixels of an e-ink screen. Paper-like displays leave no room for noise, so every detail has to earn its place.

EkiBoard e-ink display on its desk stand, showing upcoming train departures

01 / ekiboard.com

EkiBoard

The departure board for your station.

  • TypeScript
  • Next.js
  • React
  • Node.js
  • Terminus
  • E Ink

A connected e-ink device that shows your next trains in the native Japanese station-board format. I designed and built the whole product: web apps, a Node.js backend with real-time data pipelines, device software and the 3D-printed enclosure.

Highlights

  • 16,000+ lines and routes across Japan and France, merged from dozens of transit APIs into one normalised pipeline.
  • Walking-time aware: it only shows the trains you can still catch, with live delays.
  • Fleet back office for pairing, firmware, battery health and remote screen management.
  • Available in English, Japanese and French, with up to six months of battery life.
Role
Product design, frontend, backend, embedded & hardware
Visit ekiboard.com (opens in a new tab)Read how it’s built (opens in a new tab)
IntelSlate dashboard on a wall-mounted e-ink screen, showing stock prices, charts and an AI news summary

02 / github.com/delalys

IntelSlate

Market intelligence, designed for e-ink.

  • Next.js
  • React
  • TypeScript
  • Prisma
  • PostgreSQL
  • Claude API
  • Tailwind CSS
  • Vitest

A stock portfolio dashboard with AI-generated news briefings, optimised for TRMNL e-ink terminals. It tracks market data every hour, flags significant moves, gathers the related news and has an LLM summarise it every morning.

Highlights

  • Fully server-rendered and cached, so the device can wake, screenshot and sleep in under a second.
  • Scheduled pipeline: prices every hour, then news and AI summaries before the morning commute.
  • Two complete themes, including a retro-ink theme tuned for e-ink hardware.
  • Typed end to end with Zod schemas, internationalised and tested with Vitest.
Role
Product design, full-stack engineering & AI integration
View the source on GitHub (opens in a new tab)

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