Zellerfeld

Manufacturing

FrontendDeveloper

€72–98k ~AI est. Hamburg, Germany FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Frontend Developer at Zellerfeld. Skills: Frontend architecture, Performance, Scalability, Security. Drive frontend architecture. Make decisions about patterns”

Industry & Context.

Manufacturing
Problems you'll solve

Root cause analysis

What They're Looking For.

Must Have

Senior-level React experience, Senior-level TypeScript experience, Track record of owning non-trivial frontend systems in production, Production debugging experience across the full path, Performance and scalability work on real systems, Frontend security awareness beyond auth-token plumbing, Comfort with ambiguity, Judgment to make decisions when requirements aren't fully formed

Nice to Have

Experience with realtime, Experience with hardware-adjacent, Experience with kiosk/in-store frontends, Manufacturing context, Production context, Operational-tooling context, 3D experience, WebGL experience, Product-visualization experience, PWA experience, Native experience, Background contributing to design systems, Background contributing to frontend platform work

What You'll Do.

Drive frontend architecture

Make decisions about patterns

Make decisions about boundaries

Make decisions about shared infrastructure

Own features end-to-end

Lead on observability

Apply frontend security rigor

Translate product needs

Translate hardware needs

Translate operational needs

Collaborate with hardware engineers

Collaborate with operations

Mentor other frontend developers

Review code with intent

Establish engineering practices

How You'll Work.

Team & Collaboration

Cross-functional teams; Hardware engineers; Operations

Full Job Description

Your mission You’ll be part of a small team of software developers building the factory of tomorrow. Your job will be to refactor and optimize existing software and the development of new tools and services from footscan via production to the consumer. As a part of our development team, you will find solutions for problems you never heard of and extend your knowledge daily. What you'll do Drive frontend architecture across our three product surfaces, making decisions about patterns, boundaries, and shared infrastructure that hold up over time Own features end-to-end: from the design conversation through implementation, production rollout, and the inevitable debugging session when something behaves differently on the factory floor than it did in staging Lead on performance, scalability, and observability. Core Web Vitals on the consumer side, realtime responsiveness on the hardware-adjacent side, and the instrumentation that lets us know which is broken Apply frontend security rigor. Not just "we use auth tokens," but a working understanding of XSS, CSRF, CSP, dependency risk, and the everyday vulnerabilities that ship to production when nobody's watching Navigate ambiguity: translate vague product, hardware, or operational needs into technical direction, and know when to ship a fast solution versus invest in a durable one Collaborate directly with hardware engineers on the production-side UIs and with operations on scanning and in-store experiences. The feedback loop is short and the requirements are real Mentor other frontend developers, review code with intent, and help establish the engineering practices that scale with the team Your profile Senior-level React and TypeScript experience, with a track record of owning non-trivial frontend systems in production Demonstrated ability to make architectural decisions about patterns, abstractions, and where to draw the line between shared and bespoke Production debugging experience across the full path: browser, API cont

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