(Senior) Applied Scientist, Search

About Wolt

At Wolt we create technology that brings joy simplicity and earnings to the neighborhoods of the 2014 we started with delivery of restaurant food. Now were building the delivery of (almost) everything and youll find us in over 500 cities in 30 countries around the 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe.

Working at Wolt isnt always easy but its definitely exciting. Here youll learn more build more and ship more than in most other companies. Youll be challenged a lot but also have a lot of fun on the way. So if youre a self-starter with drive and entrepreneurial spirit this could be the ride of your life.

Wolt is part of DoorDash together we form one of the worlds largest local commerce platforms operating across DoorDash Deliveroo and Wolt markets in 40 countries. Our Consumer organisation sits at the intersection of machine learning and customer experience responsible for helping millions of customers every day find the right restaurants dishes and items in search personalised recommendations and discovery surfaces that feel intuitive and relevant. Its a domain where scale is truly global the engineering and applied science problems are genuinely hard and scientifically interesting and the impact on the customer experience and our business metrics is immediate and measurable.

Were looking for an Applied Scientist to join our Consumer this role youll work on some of the most technically challenging ML problems across DoorDash: understanding what our customers are looking for identifying key concepts in their queries and surfacing the most relevant results. Youll be embedded in a cross-disciplinary team of engineers MLengineers and applied scientists with full ownership from research to production. If your expertise matches our domain and you want to work on hard problems at global scale alongside exceptional colleagues wed love to meet you.

What youll be doing

As an Applied Scientist in Consumer youll advance the ML models and methods that power how customers across DoorDash Deliveroo and Wolt find and discover content. Youll work end-to-end collaborating closely with engineers and product managers to deliver real impact.

Day-to-day in this role youll:

• Design and develop ML models for search relevance query understanding and ranking that operate across DoorDash Deliveroo and Wolts 40 markets.
• Bring state-of-the-art solutions to our stack for the delight of our customers helping the team to impact business metrics.
• Work end-to-end on ML problems: from problem framing and data analysis through model development offline evaluation and production monitoring.
• Collaborate with Software Engineers ML Engineers Product Managers and Analysts to translate research insights into real customer impact.
• Contribute to our group-wide Applied Science community through knowledge sharing technical reviews and raising the bar on ML practices.

Our humble expectations*

• You have 4 years of hands-on experience in applied ML with a track record of shipping models to production (a PhD in ML with applied research experience is equally welcome).
• You have solid experience in Search: query understanding query intent prediction or semantic search.
• You are proficient in Python and experienced with ML frameworks and large-scale data processing.
• You communicate complex technical ideas clearly and collaborate effectively with cross-functional teams.
• Experience with NLP dense retrieval learning-to-rank or embedding-based methods is a strong plus.

What we offer

In this role you will have a direct and measurable impact on millions of customers every day. Youll join a team of world-class applied scientists and engineers in DoorDash Deliveroo and

Wolt who care about both rigour and craft tackling problems that are genuinely hard and impactful in ways that few companies can offer. Together with your lead you will have the opportunity to create a personalised development plan to grow your strengths and to develop new capabilities.

This role can be based in one of our tech hubs in Berlin Helsinki or Stockholm or you can work remotely anywhere in Finland Sweden Germany. We also offer relocation support to help you join us.

Next steps*

Once you apply you will go through 4 steps in our hiring pipeline:

• TA Screen: a 30-minute introductory call with one of our Talent Partners to learn about your background and tell you more about the role.
• Hiring Manager interview: a conversation covering your domain experience in Search or Personalisation past projects AI fluency and ways of working. We will tell you more about the team use cases our tech stack etc. and it will be your opportunity to ask questions.
• Coding & System Design: a technical session focused on ML system design and problem-solving with some of the teams ML Engineers.
• Project / Expertise Deep Dive: an interview with the teams Applied Scientists going deep on your domain expertise and past projects.

Our Commitment to Diversity and Inclusion

Were committed to growing and empowering a more inclusive community within our company industry and cities. Thats 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.