Zellerfeld

Technology

FullstackDeveloper

€75–105k ~AI est. Hamburg, Germany FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Fullstack Developer at Zellerfeld. Skills: Full-stack development, API integration, Production operations. Build features end-to-end. Refactor features end-to-end”

Industry & Context.

Technology
Problems you'll solve

Debugging; Troubleshooting; Root cause analysis

What They're Looking For.

Must Have

Senior-level full-stack engineer, Owned both sides of stack, React experience, TypeScript experience, Node.js fundamentals, Production operations experience, Performance and scalability work, Security awareness, Comfort with ambiguity, Drive technical direction independently

Nice to Have

Laravel experience, Laravel Nova experience, PHP experience, Tailwind CSS experience, Non-relational stores exposure

What You'll Do.

Build features end-to-end

Refactor features end-to-end

Integrate GraphQL APIs

Create responsive frontends

Translate design intent

Make architectural decisions

Make product decisions

Collaborate with teammates

Drive architectural decisions

Operate production systems

Improve observability

Apply security awareness

Avoid common exploits

Collaborate with hardware engineers

Collaborate with operations

Mentor other engineers

How You'll Work.

Team & Collaboration

Backend teammates; Frontend teammates; Design teammates; Hardware teammates; Cross-functional teams

Communication Scope

Explain reasoning

Process & Methodology

Agile practices, Deployment practices, On-call practices

Full Job Description

Your mission You'll be part of a small team of software developers building the factory of tomorrow. As our Full Stack Developer, you'll work across the entire product flow — from foot scanning and production to the consumer experience — refactoring existing software and building new tools and services. You'll tackle problems you've never encountered before, grow your knowledge every day, and directly shape the way we build. What you'll do Build and refactor features end-to-end, across interfaces, production tooling, and consumer-facing apps Develop and integrate REST and GraphQL APIs — both sides of the contract Create responsive, polished frontends that translate design intent into production UI Work with Docker as part of normal development and deployment Make architectural and product decisions, not just implement them Collaborate closely with backend, frontend, design, and hardware teammates Continuously raise the quality bar: performance, testing, and code health on both sides of the stack Own product and platform flows end-to-end: design, build, ship, operate, and improve. Not "frontend with backend tickets," and not "backend with React on the side." Real ownership across both sides of the API Drive architectural decisions that span the stack: where logic lives, how data flows, how systems stay coherent as they grow Operate production systems. Debug across browser, API, queue, database, and infrastructure, and improve observability so the next person doesn't have to start from scratch Lead on performance and scalability on both sides: frontend render performance, bundle and asset strategy, backend query and queue performance, caching, async processing Apply real security awareness across the stack: authentication and authorization done correctly, common exploits avoided by design (injection, SSRF, broken access control, XSS, CSRF), and dependency hygiene Navigate the everyday tradeoff between shipping fast and building sustainable systems, and explain your re

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