Tech Life at RELEX
You code, the planet benefits

At RELEX, you’ll develop products that have a concrete, positive impact on the world. Our products help retailers and consumer goods brands optimize their supply chain and retail planning processes, increasing the availability of goods on the shelves while decreasing food waste and carbon emissions from transportation. With us, you can do incredible, meaningful things—and have a life outside of work.

What it’s like to work at RELEX

Our culture

Challenge your skills

We have big customers with big needs, so your skills will be put to the test. Our software must be able to tackle large amounts of data, so you’ll work with a unique, in-house database engine built to serve our specific needs, with terabytes of RAM and hundreds of CPUs. We produce reliable, high-quality code that’s scalable to the world’s largest retailers: thousands of stores, millions of products, and billions of rows of raw data.

Each team decides how to reach their goals, and our tech stack is a mix of languages and tools. You’ll be able to work with functional programming, machine learning and interesting algorithms, building big data pipelines, and highly mathematical challenges related to performance and concurrency, among other things.

Enjoy autonomy

If you enjoy a laid-back, small-company spirit where the CEO is just like any other colleague, if you’re passionate about what you do, if you take pride in your work—then you’ll fit right in at RELEX. At RELEX, you’re part of a culture in which software development teams can organize themselves and choose the way they work most efficiently. There are plenty of challenges to take on, both in quantity and variety, and you have the freedom to tackle them on your own terms—as long as you can communicate why and how.

Grow your expertise

Your professional development and personal growth are important to us. In tech roles, you get to dedicate up to 20% of your working hours to innovation and learning. Knowledge sharing plays a key role: our people support and mentor each other. Our team is incredibly skillful, and you may find that you’re hardly ever the smartest person in the room. If you’d like to join us in building something that’s never been done before, hit us up.

Are you familiar with these?

Technologies we use

Our teams can decide the technologies they use, but here are the most common ones.


React, TypeScript


Java, Haskell, Ruby, Elixir, Golang, Kotlin, Scala, Node.js, .NET Core


Azure, Kubernetes, Terraform, Terragrunt, GitLab, Kafka


JMeter, Cypress, Robot Framework

Hear it from RELEXians

What our tech people think about us

“At RELEX, we have quite a different approach to making results: we strive for long-term success. We are all working for the same goal, the development of our own platform. My colleagues are really supportive, smart, inspiring, and relaxed. Everyone works together seamlessly, and I have never had any problems with getting help or moral support.”

Anna Kruglaia Senior Software Developer

“What inspires me to work as a developer at RELEX is the challenging problems we are solving. Every day I re-learn how little I really know and how much there is still to learn. Many software professionals don’t really know how much impact our work has, as our product isn’t directly visible to consumers. But if, for example, we can help our retail customers save thousands of tons of food, it literally has a huge impact.”

André Brunnsberg Lead Software Developer

“There are a lot of opportunities to grow and make an impact at RELEX. Many move internally to learn a new technology or develop a different part of the product. You can try various things and influence on what you are currently doing. The best part is that you can make an impact if you have noticed that there’s something to improve. Right from the start, my suggestions were taken into notice and improved right away.”

Silja Polvi-Huttunen Senior Software Developer
Careers blog

Stories about our people

Familiarize yourself with the RELEX way of thinking through our career stories and blog posts on technology, culture, and more.

Office locations

Where you can find us

Our product development is located at our headquarters in Helsinki, Finland, but you can also work from our recently opened technology branch in Lisbon, Portugal. We also have tech teams in Atlanta, US, and Stoke, UK. Choose your location and hop on board in developing the leading supply chain and retail planning platform!

Join our team

Did we convince you to become our new colleague? Great!

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