Full Stack Software Engineer

FELFEL AG; Zürich; On-site; CHF 90,000 - 130,000; Full time

Benefits offered by this job

5 weeks holiday per year

Work from anywhere 2 weeks per year

Pension fund

Public transport allowance

Team events

Job summary

FELFEL AG in Zurich seeks a versatile Full Stack Software Engineer (100%) to build systems spanning warehouse automation to a customer-facing POS Android app. You will own backend and GraphQL services, integrate payments, ERP, and partner systems, and contribute to on-site testing with warehouse staff.

The role emphasizes end-to-end ownership, on-call readiness, and close collaboration with end users to translate problems into reliable software solutions.

Qualifications

• Production experience in at least one typed backend language and one frontend framework.
• Experience owning software in production, including on-call duties and debugging from logs.
• Familiarity with C#, TypeScript, Android, and Kotlin.
• Exposure to hardware, IoT, payments, logistics, or Odoo environments is advantageous.
• Ability to learn quickly and ship reliable code.

Responsibilities

• Own warehouse and supplier web apps used daily for inbound processing, picking, labeling, and inventory.
• Develop and maintain the internal back-office tool, including the backend and GraphQL API that runs 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, managing the release process for the fleet.
• Integrate and support payment systems (Card, TWINT), ERP, and other partner integrations.
• Participate in on-call rotation to debug live issues with operations team.
• Visit the warehouse on-site to test changes and gather feedback from end users.
• Translate vague problems from non-technical colleagues into shipped solutions.
• Own production deployments, managing logs, alerts, and rollout plans with rollback.

Skills

C#

Java

Kotlin

TypeScript

React

On-call experience

Tools

GraphQL API

Android

Job description

IN SHORT

Are you a versatile problem-solver who wants to write software that impacts the physical world? As a Full Stack Software Engineer (100%) in Zurich, you will be at the core of our operations, building systems that touch everything from warehouse automation to customer-facing smart fridges.

YOUR RESPONSIBILITIES

• Take ownership of warehouse and supplier web apps used daily for inbound processing, picking, labeling, and inventory.
• Develop and maintain our internal back-office tool, including the backend and GraphQL API that runs menus, deliveries, inventory, and customer sites.
• Manage the service connecting automated picking lanes to the rest of the system to ensure uninterrupted warehouse operations.
• Maintain and update the Point of Sale Android app running on hundreds of fridges, managing the release process for the entire fleet.
• Integrate and support payment systems (Card, TWINT), our ERP, and other partner integrations.
• Participate in the on-call rotation to debug live issues directly alongside the operations team.
• Visit the warehouse on-site to test changes and gather feedback from the people actually using the software.
• Translate vague problems from non-technical colleagues into shipped solutions without needing them broken down first.
• Own production deployments, managing logs, alerts, and careful rollouts with clear rollback plans.
• Break down larger features, review other engineers' pull requests, and proactively maintain system health through upgrades, testing, and cleanup.

YOUR PROFILE

• Proven production experience in at least one typed backend language (such as C#, Java, Kotlin, Go, or TypeScript) and one modern frontend framework.
• Track record of successfully owning software in production, including on-call duties, debugging from logs, and resolving live issues while users wait.
• Familiarity with or willingness to dive into C#, TypeScript, Android, and Kotlin.
• Prior exposure to hardware, IoT, edge devices, payments, logistics, retail operations, or Odoo environments is highly advantageous.
• Demonstrated ability to dive into unfamiliar tech stacks, learn quickly, and ship reliable code.
• Strong passion for collaborating directly with end-users, including warehouse and operations staff, rather than exclusively with other engineers.
• High degree of curiosity and a proactive mindset to take full ownership of problems from end to end.
• Fluent English communication skills (written and spoken); knowledge of German or French is a plus.
• Non-smoker - we don't want you to smell like cigarettes, neither at work nor at customer meetings. After all, FELFEL is about good food.
• Valid work permit or Swiss passport.

OUR BENEFITS

• Lots of delicious food, just a few steps away from your desk - we make your gastronomic dreams come true
• Best barista coffee and tea for the whole team, thanks to our innovative Gavetti coffee machine
• 5 weeks holiday per year, as well as the chance to buy an extra week of vacation
• Two full weeks of 'work from anywhere' per year to bring more variety to your work day
• We care about your future with an above-mandatory pension fund
• New parents get 16 or 3 weeks, respectively, of fully paid parental leave. We also support the return to work by making a generous financial contribution to childcare until the child reaches kindergarten age.
• We encourage our employees to use public transport by covering your half-fare travelcard
• Great team events, such as our well-known FELFEL Summer Outing
• Stay active and healthy with our weekly sports sessions

ABOUT US

FELFEL is all about good food and coffee in the workplace: we help Swiss employers become masters of hospitality. With our smart fridge 'FELFEL' and delicious barista coffee 'Gavetti', we enable companies to provide their employees with first-class, ultra-fresh food and drinks throughout the day. Whether hearty and traditional, modern and vegan or high in protein - our weekly changing menu ensures that all employees always have something to be excited about ;).
FELFEL is a family business that was founded in 2013. Today, we take care of around 1000 locations in Switzerland, and have 150 employees across our offices in Lausanne, Zurich and New York.
www.felfel.ch