Senior Frontend Engineer

About the role

The frontend is where everything WareBee promises either becomes real or feels like marketing. You will build the tools warehouse managers live in every day: a 3D model of their whole site, analytics over millions of rows, and flows that let them steer optimisation and see why an answer is good. These tools have to earn trust in the first session and keep earning it in the hundredth.

WareBee runs on two engines. Physical AI is a living spatial model of the warehouse floor, its racks, aisles and movement. Process AI learns how work actually flows through it. Your interfaces are how operators see and steer both.

The problems

• Rendering an entire warehouse in the browser, down to every rack, bin and route, and keeping it interactive on an ordinary laptop
• Making millions of rows feel instant, so filtering, pivoting and drilling in never waits on a spinner
• Presenting the output of NP-hard optimisation so a planner can understand it, trust it, and overrule it when they know better
• Turning a complex physical model of heights, capacities, flows and time into views a shift manager can read at a glance
• Moving heavy computation into the browser where that is the faster path

What you will do

• Build 3D and data-dense interfaces with WebGL and WebGPU, and move heavy work off the main thread with workers and WebAssembly where it pays off
• Run analytical queries in the browser with DuckDB-WASM or similar when network round trips are the bottleneck
• Design visualisations that make a lot of data simple: the right chart, the right default, detail revealed as the user drills in
• Own the design system as a living tool: tokens, components and patterns the team can build on
• Make performance a feature: fast paints, fast interactions, small bundles, steady frame rates over large datasets
• Pair with designers, backend and optimisation teammates to ship features end to end
• Work with AI coding agents every day, and build the guardrails that keep their output trustworthy: tests, types, and the context and skills they need
• Treat accessibility as engineering quality, not a checkbox

What we are looking for

• 10+ years of professional software development, including production web interfaces
• Real experience with 3D on the web, whether three.js, raw WebGL or WebGPU. You think in draw calls, instancing and memory budgets
• Data visualisation at scale that goes beyond wrapping a chart library
• Hands-on experience with WebAssembly, web workers or in-browser data engines, or a strong appetite to learn them
• Strong taste. You know when an interaction feels right and when it does not
• Fluency with modern type-safe frontend tooling such as React and TypeScript, and the discipline to use it well
• Practical, sceptical fluency with AI tools. You have shipped real work with coding agents and know where they fail
• Comfort with the messy bits: forms, animation, edge cases, real users on bad networks
• Care about the long arc of a codebase

Strong plus

• Hands-on warehouse, logistics or supply-chain experience. You have seen how a real floor runs
• A background in game engines, CAD, GIS or computational geometry
• Building LLM-powered interfaces, such as natural-language querying or explanations of results

What we offer

• Real product surfaces with real users running real warehouses
• A small senior team that respects the craft
• Hybrid in Cambridge, UK or Tel Aviv, Israel, or fully remote