To build a better, bigger Wolt, we’re looking for Applied Science Intern (Operations Research) to join us for summer 2025 in Helsinki. If building tech and services that make cities better sounds like your cup of tea, let us tell you more about the opportunity. 🤩

A look into the Applied Science team at Wolt

Applied Scientists at Wolt work with machine learning and operations research for the most important processes and parts of Wolt’s online delivery platform and business operations that affect all the 30 countries we operate in. 🌍

Our Applied Scientists are embedded in our product development teams. That helps to focus on a specific area together with a cross-functional team. Applied Scientists closely collaborate with Product Leads, Software Engineers, Designers, and Product Data Analysts. 💪

While being embedded in product teams, our Applied Scientists have a “home” Applied Science team, where they have their own rituals, meetings, knowledge sharing sessions, and support. The Applied Science team has a very own team lead who cultivates personal growth and ensures the team does the right things in the right ways.

As an Applied Science intern, you’ll be assigned a senior mentor from the Logistics Applied Science team and will be embedded into a product team together. 🚀

The program

The program will last for 6 months and we’re very flexible with the start month — you can join us in April, May, June - you decide!

During the internship, you’ll gain hands-on experience by working on optimization and operations research challenges as part of a product team. This goes from identifying opportunities for operational improvement, developing and prototyping mathematical models or algorithms, all the way to deploying, testing, maintaining, and improving a production-ready solution inside of the embedded product team.🎓

 🤓 Your daily work will include:

• Working closely with your applied science mentor to experience the lifecycle of operations research products: from conception to deployment

• Pair with analysts, engineers, and product managers to identify their needs and translate them to data/models questions

• Collaborating with other applied scientists to develop and experiment with operations research solutions, machine learning models and/or methods in Python

• Being involved with real-world, noisy, multi-modal data

• Participating in continuous development and update of models

You’ll work with our modern Applied Science stack (Python, SQL, Flyte, Seldon Core, MLflow, Snowflake, Looker, K8s, AWS, Kafka), and our team will support you with getting exposed to mentioned technologies. 🥳 

What we offer

A 6 months paid internship program with a salary of 3300€ per month. Many of our colleagues have started their careers at Wolt through this program and we hope you can be one of them as well!

🌍 Beyond the obvious, we’re happy to bring on the stage:

• Plenty of room for development — you’ll be assigned a skillful mentor to work closely with

• You get to learn Wolt’s Logistics domain, and experience exploring how optimization and operations research techniques are integrated into task assignments. You’ll also get to see how machine learning is integrated into our products and tooling. You’ll be working on real life problems that potentially impact millions of end users.

• A company culture where we take ownership beyond the obvious, do common things uncommonly well, think big but stay humble, and treat others kindly

• The core requirement for the role is a genuine interest in production-level operations research projects - we hope you’re motivated to master each step of the process from prototyping to maintaining and improving production-ready solutions. We highly value relevant educational backgrounds, such as Maths, Statistics, Computer Science, and similar.

• From the technical perspective, we appreciate basic knowledge of SQL and Python through your studies, hobby projects, or previous work experience. It’ll be enough if you understand the basics of programming, can read code, and know how to write syntax.

• Since our Applied Scientist team closely interacts with the product teams, we’re looking for someone who enjoys interacting with people on a daily basis. The ability to search for information and ask relevant questions from various teams will be crucial. 🙌

• As Wolt is an international company, our only language requirement is advanced English skills.

• We prefer candidates who are able to continue full-time after the internship period, so this is truly a chance for a career path. Today we have numerous members in different product teams who originally started as interns.🙏

• Please note that we’re looking for interns who are able to work in close cooperation with their mentors and team members located in Helsinki as soon as the situation enables. We are unfortunately unable to offer relocation or visa support for internships, so you should be eligible for work in Finland for the duration of the program. If you’re offered to stay with us on a permanent basis after the internship, we’ll take care of your work visa if that’s needed.

To apply for the internship, you don't need to have extensive working experience — you can prove your skills by completing the assignment we have prepared for you!

👀 The process is easy:

1 - Open the assignment. Read through the assignment instructions carefully. When your solution is ready, put it as a zip file to Google Drive, Dropbox, OneDrive (or similar). Remember to check permissions! If we cannot access the file, we cannot review your solution. Please don’t store your solution in a public GitHub repository.

2 - Click “Apply now”, fill in the form and attach a link to your assignment.

3 - Send your application.

Please note that the assignment is a mandatory part of the process. Applications without attached solutions won’t be accepted.

The deadline for the assignment is 26th of January (end of day). We’ll review the assignments and invite successful candidates for interviews within 3 weeks from the application deadline. This is how the recruitment process will look - we do not have the exact dates as the length of the process depends on the number of applications. If you have any questions, you can turn to our Talent Acquisition Partner, Lina Muncyte at lina.muncyte(at)wolt.com. 

Please note that we do not accept applications via email or LinkedIn messages.

FAQ

Do I need to be based in Helsinki? Do you offer relocation support?

We have one of our tech hub in Helsinki and we would need you to be able to work at least partly from the office with your future internship mentor and other team members. This means commuting to the office every now and then for working together and for events. We don’t offer relocation and visa support for this specific program so you should be already in Finland, ideally in the Capital Region, with a valid work permit.

I can take care of the relocation part myself. Can I still apply?

Unfortunately, we will not consider your application if this is the case.

I want to apply; what happens after I send my application?

If you are selected for the first round of interviews, you will get an invite for the next step within 3 weeks after the application deadline. We will be in touch with each and every candidate who applied regardless of the outcome. The recruitment process includes the preliminary home assignment, technical interview, and a meeting with your possible team lead and mentor. We are aiming to make the decisions during February.

When is the exact deadline for the applications?

The deadline to apply is 26th of January, Sunday, 23:59 in your timezone. However, to avoid additional stress during the application period, our advice is to apply ahead of the deadline and set aside some time to review your assignment solution with a fresh pair of eyes.

I missed the deadline; can I still apply through email?

Unfortunately, no. Please make sure to apply through our recruiting system by the 26th of January (end of day).
 

I'm a student/ fresh graduate. Can I apply? 

We want to provide long-term career paths so we are looking for candidates who are able to continue with us after the internship full-time. Therefore, we are especially looking for graduated candidates but if you are at the very end of your studies and feel comfortable finishing those while working with us you are welcome!