Software Engineer (Scala)

At the large scale of the Wolt business, our operational efficiency benefits greatly from having automation for managing supply (how many courier partners are online) and demand (how many orders are being placed by customers). For us supply balance is a clear win-win situation, but it takes an entire team to make sure that this is possible. 💪 To succeed even better with supply balance, we are adding one more Backend Engineer to our new Supply and Demand team!
Supply and Demand team’s mission is to make Wolt cities efficient for our customers, merchants and couriers, as well as making running the cities smooth for our operations people. This is done by building tools and features that help achieve balance between supply (number of Courier Partners online) and demand (home delivery orders from consumers) by surfacing the forecasts to our Courier Partners in the Courier App and Wolt operations, as well as creating ways to dynamically influence supply and demand. As a backend engineer you will have a chance to work on topics around, for example, courier engagement and activation bonuses. That can be fun and rewarding for several reasons:
This field encourages innovative approaches and experimentation. You can try out new methodologies to see what works best.
You often collaborate with various teams such as applied science, analytics, product management, and operations.
Designing systems to optimize courier activation and bonuses involves solving complex logistics and machine learning problems.
The need for real-time solutions means you often work in a fast-paced, dynamic environment.

At the moment, the team consists of two frontend developers, several backend engineers and applied scientists as well as the engineering team lead and product lead. The main programming languages on the team are Python, Scala, and TypeScript (React) and since the team also works closely with Applied Scientists, this is a great chance to learn a lot about machine learning if you have a knack for it!
This role can be based in one of our tech hubs in Helsinki, Stockholm, or Berlin or you can work remotely anywhere in Finland, Sweden, Germany, or Estonia. Read more about our remote setup here.
Our humble expectations
👉 You have solid experience designing, building, and integrating quality software (microservices) in Scala on a large scale within a complex domain, with strong focus on event-driven approach where the decisions need to be made in an online way.
👉 You have knowledge of AWS, Kubernetes, Docker, observability (DataDog or similar tools) and data storage, both SQL and noSQL databases. We are actively using multiple solutions: postgresql, dynamodb, mongo, redis.
👉 You’re a dedicated person who is pragmatic with a positive attitude, who doesn't shy away from going outside of their comfort zone, and demonstrates curiosity and willingness to keep continuously learning.
👉 You’re comfortable working with real-world data and its different nuances.
So, TL;DR if you have several years of experience in dealing with the back end of the house, can’t wait to learn new things, have an interest in tackling scalability challenges and building some cool stuff, then be sure to drop us a line! 📫