Alex Roessner 罗轩阳
selected work · MMXXVI
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Captain Landseed

Operational mission-control for Landseed's field deployments.

Internal tool, in production. TypeScript 3.6 MB active 6h ago

Origin

Landseed deploys continuous sensors on conserved land — remote, often off-grid, often across multiple jurisdictions. Each site has a status, a maintenance window, an upstream agreement, a deed, an owner, a contact, a power source, a connectivity story. Without a control plane you spend the first hour of every site visit reconstructing what is there.

Problem

A field operator on bad cellular needs to know, in five seconds: which sensor is offline, when it last reported, whether anyone has been dispatched, what the agreement says about access. The vendor consoles are not built for that.

Approach

A single internal console: sites, sensors, deployments, agreements, alerts. Built so a non-engineer in the field can read it on a phone with bad signal — no JS framework boot, no client-side hydration, server-rendered HTML, sub-second TTFB.

Methodology

Edge-rendered. The console runs on Cloudflare Workers; data lives in Postgres at the edge replica. Auth is a passkey. The mobile experience is built first; the desktop view is the same HTML wider.

Selected milestones

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Stack

TypeScriptCloudflare WorkersPostgreSQLedge runtime
To dig in — alex.roessner@landseed.earth