Full-Stack Engineer: IoT & Warehouse Apps (Zurich)

FELFEL; Zürich; Hybrid; CHF 110,000 - 150,000; Full time

Benefits offered by this job

Delicious meals

Gavetti coffee

5 weeks vacation

Work from anywhere

Pension plan

Parental leave

Public transport subsidy

Team events

Sports sessions

Job summary

FELFEL in Zurich is seeking a versatile Full Stack Software Engineer (100%). You will build warehouse and back-office systems, including a GraphQL API and Android POS app supporting hundreds of fridges.

You will partner with operations, logistics, and finance to deliver reliable software for inbound processing, inventory, and customer sites. The role emphasizes hands-on engineering, on-site collaboration, and end-to-end ownership from deployment to monitoring.

Qualifications

• Proven production experience in at least one typed backend language and one frontend framework.
• On-call duties and debugging live issues in production are expected.

Responsibilities

• Own warehouse and supplier web apps used daily for inbound processing, picking, labeling, and inventory.
• Develop and maintain our internal back-office tool, including backend and GraphQL API for menus, deliveries, inventory, and customer sites.
• Manage the service connecting automated picking lanes to ensure uninterrupted warehouse operations.
• Maintain and update the Point of Sale Android app running on hundreds of fridges and manage releases.
• Integrate and support payment systems (Card, TWINT), ERP, and partner integrations.
• Participate in on-call rotation to debug live issues with operations.
• Visit the warehouse on-site to test changes and gather feedback from users.
• Translate vague problems from non-technical colleagues into shipped solutions.
• Own production deployments with logs, alerts, and rollback plans.
• Review PRs and maintain system health through upgrades and cleanup.

Skills

Typed backend language

Frontend framework

On-call duties

Android/Kotlin

Tools

GraphQL

Android app

ERP integration

Job description

FELFEL in Zurich is seeking a versatile Full Stack Software Engineer (100%). You will build warehouse and back-office systems, including a GraphQL API and Android POS app supporting hundreds of fridges.

You will partner with operations, logistics, and finance to deliver reliable software for inbound processing, inventory, and customer sites. The role emphasizes hands-on engineering, on-site collaboration, and end-to-end ownership from deployment to monitoring.