Senior Kotlin Backend Engineer, AdTech

4 weeks ago

Stockholm, Sweden Wolt Full time


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.

Working in Product Development at Wolt

At Wolt, we’re about getting things done. You’ll probably enjoy it here if you like taking ownership, developing yourself and being around friendly, humble and ambitious people. 

The behind the scenes of Wolt is run by an awesome bunch of over 700+ planners, builders, designers and data crunchers. We call ourselves Product+, as we’re the very core of Wolt’s products, tools and platforms. To build our products, we work in over 60 cross-functional, independent and autonomous teams. Teams are made up of a mix of talented individuals: engineers, designers, data scientists, analysts, and product leads. Each team takes ownership for solving customer problems in the best possible way.

Our Commitment to Diversity, Equity & Inclusion

We want to have all sorts of people in our team – people like you and me, and people different from you and me. To be able to work with diverse teammates – when it comes to gender, age, ethnicity, life background, sexual orientation, political views, religion, or any other personal trait – we consciously aim to offer equal opportunity for everyone to work with us. This is because we believe diverse teams make the most thought-through decisions and build things in the most inclusive way.

Join us today to build Wolt together.

#LI-SK1 Job Description

We are looking for a Senior Backend Engineer to join our AdTech engineering team. The AdTech team, a bit more than 1-year-old, is on a task to turn Wolt into the most attractive destination for advertisers (brands or merchants) seeking to connect with a highly engaged audience.

While Wolt is best known as a food delivery platform, we have been grazing on new (product) green fields over the last year. We have expanded our offering to cover verticals such as grocery, pharmacy, apparel - and so much more - on top of restaurant delivery. However, we want to remain the most lovable and easy-to-use Product around. It’s a daunting challenge, but we strive to maintain a high level of consistency across customer touchpoints, maintain a coherent product and design language, and make it exceptionally intuitive for Wolt customers to discover the products they want and get them delivered to them in as little as a few minutes. Building an advertising platform will therefore be a complex challenge and requires serious engineering effort to be done elegantly and with a high dose of relevance and even subtlety. To succeed in this journey, we also cooperate very closely with our Doordash peers in the U.S..

Since it is the very early days in the project, you will play an integral part in defining the way the team will work, participate in architecture, CI/CD discussion meetings and decide on tools and best practices.

A few examples of challenges and projects we are working on:

  • Optimizing the performance of our ad server
  • Building new ad management UI for our merchants and brands
  • Ensure that our ads are relevant and of high quality
  • Figure out how to efficiently store and query ad performance data

You’ll collaborate closely with the designer, product manager and other engineers in your team. We are using Kotlin as the main language in the backend development.

We’re obsessed with high-ownership teams at Wolt, which means you’ll get to work in a culture of freedom and accountability. Our teams are in charge of their own roadmaps, how they build services and products, and how they solve challenges from new features to the core scalability of their solutions.

New team members are welcome to either of our tech hubs located in Helsinki and Stockholm or you can work entirely remotely anywhere in Finland, Sweden and Estonia. You can read more about our remote setup here.

Qualifications

We are looking for someone with an extensive professional background in building backend services using Kotlin or similar modern languages and delivering modern, testable and maintainable code. Our services are up and running in AWS and we use Docker & K8 for CI/CD pipelines. PostgreSQL, Redis and MongoDB are the databases we use.

In addition we expect a willingness to take ownership beyond the obvious, motivation to learn new things together and to teach others, and a willingness to collaborate with different teams across the organization.

Additional Information

The position will be filled as soon as we find the right person, so make sure to apply as soon as you realize you really, really want to join us

The compensation will be a negotiable combination of monthly pay and DoorDash RSUs. The latter makes it exceptionally easy to be excited about our company growing and doing well, as you’ll own a piece of the pie.

For any further questions about the position, you can turn to Product+ Talent Acquisition Partner - Severi Kausola (severi.kausola@wolt.com).

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