Backend Developer

Zellerfeld Shoe Company Inc.; Hamburg; Vor Ort; EUR 65.000 - 90.000; Vollzeit

Zusammenfassung

Zellerfeld Shoe Company Inc. in Hamburg is seeking a Backend Developer to design and maintain the systems powering foot scanning, production, and the customer experience.

You’ll write scalable PHP code, craft REST and GraphQL APIs, and help raise the bar for security and performance. Collaborate with frontend, DevOps, hardware and product teams at our Hamburg office to evolve from a monolith to microservices, implement async pipelines, and ensure GDPR-conscious design.

Qualifikationen

• Proficient in PHP and Laravel with Laravel Nova for internal tooling.
• Strong MySQL skills including schema design, query tuning and performance.
• Deep understanding of REST and GraphQL API design and authentication patterns (JWT/OAuth).
• Comfortable with Docker, Git/GitLab, and CI/CD as part of your workflow.
• Experience with caching, queues, and async processing; knows when to use microservices.
• Security-minded design and GDPR-conscious development practices.

Aufgaben

• Design and maintain the REST and GraphQL APIs that power scanning, production, and the customer-facing product
• Own services end-to-end: schema design, performance, observability, and the on-call realities of live systems
• Shape architecture decisions as we evolve between monolith and selectively extracted services
• Build async pipelines and queue-based workflows moving data between hardware, production, and customers
• Write code tested at unit, integration, and end-to-end levels and review code to the same standard
• Mentor teammates and raise the bar on security, performance, and GDPR-conscious design
• Collaborate closely with frontend, DevOps, hardware, and product

Kenntnisse

PHP

Laravel

Laravel Nova

MySQL

REST API design

GraphQL

Authentication (JWT, OAuth)

Docker

Git/GitLab

CI/CD

Caching & queues

Async processing

Microservices

Security mindset

Tools

Laravel Nova

JWT/OAuth authentication patterns

CI/CD tooling

AWS

Jobbeschreibung

Zellerfeld is revolutionising the footwear industry with the world’s first 3D-printing technology for fully customizable shoes. Our goal is simple: printed shoes on every foot. We’re a passionate team of engineers, designers, and innovators, questioning the status quo and disrupting traditional manufacturing processes. Backed by founders, influencers, and celebrities who believe in our vision, we’re committed to making a lasting, positive impact—not just on the footwear industry, but on the world.

Your Mission

You’ll be part of a small team of software developers building the factory of tomorrow. As our Backend Developer, you’ll design and maintain the systems that power everything — from foot scanning and production to the consumer experience. You’ll write clean, scalable code, contribute to architecture decisions, and help raise the bar for quality and security across our backend infrastructure.

What You’ll Do

• Design and maintain the REST and GraphQL APIs that power scanning, production, and the customer-facing product
• Own services end-to-end: schema design, performance, observability, and the on-call reality that comes with live systems
• Shape architecture decisions as we evolve between monolith and selectively extracted services
• Build async pipelines and queue-based workflows that move data between hardware, production, and customers
• Write code that’s tested at the unit, integration, and end-to-end level — and review code with the same standard
• Mentor teammates and raise the bar on security, performance, and GDPR-conscious design
• Collaborate closely with frontend, DevOps, hardware, and product

Your profile

• Strong PHP and Laravel experience, including Laravel Nova for internal tooling
• Deep MySQL skills — schema design, query optimization, and performance tuning under real load
• Solid grasp of REST and GraphQL API design, plus authentication patterns (JWT, OAuth)
• Comfortable with Docker, Git/GitLab, and CI/CD as part of your normal workflow
• Practical experience with caching, queues, and async processing
• Judgment about when to reach for a microservice and when not to
• A security mindset and the discipline to apply it consistently
• As a company specializing in both hardware and software, we value close collaboration within our team. Therefore, we are seeking candidates who can join us at our office in Hamburg.

Nice to have

• Python or Go (we use both in adjacent systems)
• AWS experience
• Background in data flow modeling or systems where backend meets hardware/IoT

Why Laravel, in case you’re wondering

It's a fair question for a company doing what we do. Laravel lets a small team move quickly across a wide surface area admin tooling, customer APIs, internal services without fragmenting the stack. Where we need different tools (Python for ML-adjacent work, Go for performance-critical paths), we use them. The backend is pragmatic, not dogmatic.