FullStack Back End Engineer

Reposted 6 Days Ago
Easy Apply
Be an Early Applicant
2 Locations
In-Office
Mid level
Food
The Role
Develop and maintain backend services in Kotlin while contributing to full-stack features using React and TypeScript. Collaborate on system design and work in a cloud environment.
Summary Generated by Built In
About Wolt

At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe.
Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life.

Who We Are

The Merchant Group consists of 150+ engineers across 25+ cross-functional teams, working together to help merchants grow their businesses and streamline operations through innovative technology. Some of us focus on building seamless experiences for our merchants, while others work on the behind-the-scenes magic that makes everything run smoothly.

We’re looking for a backend-leaning Fullstack Engineer to help build and evolve the next generation of merchant tooling, with a focus on inventory management and warehousing for Wolt Markets and other merchant partners. If you’re passionate about creating reliable, user-friendly systems that support thousands of merchants and millions of customers, we’d love to have you join us in Helsinki, Finland or Stockholm, Sweden. Read more about our hybrid setup here.

Feel free to check out the Wolt Tech Blog for more insight into our culture and technology.

What You’ll Do

As an engineer in our group, you’ll work on production systems that support merchant and warehouse operations, contributing across the stack with a primary focus on backend development. You’ll help shape how inventory and merchant tools work at scale, while also building user-facing interfaces used daily by store managers.

Day-to-day in this role you’ll:
  • Design, build, and maintain backend services using Kotlin (and occasionally Scala), supporting core merchant and inventory workflows.
  • Contribute to full-stack features, including developing and improving React + TypeScript frontend applications.
  • Work across the development lifecycle — from implementation and testing to deployment and monitoring in the cloud.
  • Collaborate with teammates on system and API design, making pragmatic technology choices that keep our systems reliable and easy to evolve.
  • Partner closely with product managers and designers to turn operational needs into clear, user-friendly solutions.
  • Learn and grow alongside experienced engineers in an environment that values curiosity, knowledge sharing, and continuous improvement.
Our humble expectations

We’re seeking experienced Software Engineers with a strong background in building scalable microservices. While Kotlin is our primary language, experience with Java, Scala, or other JVM backend languages is great. As we are exploring Go, we're looking for people who are confident in their ability to learn and teach! 🛠️

Beyond technical expertise, we value ownership, collaboration, and a mindset for growth. We think you're a great communicator who thrives in tackling complex challenges, questioning conventions, and working closely with teammates to build reliable, scalable systems. 🚀

To be successful in this role, it helps if you have:

  • Strong backend experience, with Kotlin (or other JVM languages) as your primary focus.
  • Practical experience building frontend applications with React, and comfort contributing to UI code when needed.
  • Experience switching between backend and frontend work, even if backend is where you spend most of your time.
  • Familiarity with testing, CI/CD pipelines, and deploying services to cloud environments.
  • A collaborative mindset, clear communication skills, and an interest in learning from and with others.
How We Work

Autonomy & Ownership – Our engineers have end-to-end responsibility for their services, from implementation to production.

Collaboration – Architecture and working methods are defined together, ensuring we make the best choices for long-term success.

Scalability & Simplicity – We value pragmatic solutions that keep our systems robust without unnecessary complexity. We use technologies that serve Wolt, our teams, and our engineers best. You’ll have the freedom to experiment and adopt the tools that work.

Next steps

We are continuously reviewing applications, so don’t hesitate to apply today - you will hear back from us as soon as possible.

You can read more about our recruitment process here.

Our Commitment to Diversity and Inclusion

We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.

Top Skills

Ci/Cd
Cloud Environments
Go
Java
Kotlin
React
Scala
Typescript
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The Company
HQ: Helsinki
8,287 Employees
Year Founded: 2014

What We Do

Wolt is a Helsinki-based technology company that provides an online platform for consumers, merchants and couriers. It connects people looking to order food and other goods with people interested in selling and delivering them. To enable this, Wolt develops a wide range of technologies from local logistics to retail software and financial solutions – as well as operating its own grocery stores under the Wolt Market brand.

Wolt’s products include Wolt+ (subscription service for customers), Wolt for Work (meal benefits and office deliveries for companies), Wolt Drive (fast last-mile deliveries for merchants) and Wolt Self-Delivery (service for merchant partners with their own delivery staff). Wolt’s mission is to make cities better by empowering and growing local communities. Wolt was founded in 2014 and joined forces with DoorDash in 2022. DoorDash operates in 29 countries today, 25 of which are with the Wolt product and brand.

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