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Principal AI/ML Research Engineer | AI Center of Excellence

V4P FEB19 014


Technology & Development

Job Description:

Principal AI/ML Research Engineer | AI Center of Excellence

We are looking for a passionate and creative Principal AI/ML Research Engineer! Someone who is interested in pushing the boundaries of machine learning, with a demonstrable ability to apply their skills, be it technical or behavioural practically in order to generate business value. We are looking for a candidate that has built a good intuition in machine learning methodologies and practices when applying them in different domains. 

Your role within our Kingdom:

You´ll be part of AI Labs, a research team within King’s AI Center of Excellence. AI Labs support business to solve communal modelling challenges in machine learning use cases, as well as explore state of the art to unlock opportunities to bring value to the company. As a member of AI Labs, you will be working closely with other Research Engineers in the Labs focusing on mid term or long term research projects, as well as working with ML Engineers, and Data Scientists supporting them to develop and operationalize machine learning (ML) models as part of King’s central machine learning initiatives. Our team investigates different research areas on automation at scale for game content, player experience optimization, AI trustworthiness, and new emerging technologies. 

As an Applied ML Researcher at King, you will be researching, prototyping, and implementing to advance our games and business applications to the next level by using the latest research in the field of ML including deep neural networks for supervised, unsupervised and reinforcement learning, generative models, self- supervised learning models and more conventional ML methods. With over 250 million monthly active users and 50+ billion events being uploaded daily, you´ll really have a lot of data to play with. Together with your team members you´ll get to learn on the job every day!

Skills to create thrills

So what about you? You probably have hands- on experience in various ML projects; Or maybe, you have been conducting applied research in the area of machine learning in academia for a few years and curiosity on real- world challenges took over and you moved to industry to solve problems through automation and AI/ML solutions. You like mentoring, enjoy experimenting with data and new modelling approaches, and technologies all to build top- class solutions.

Minimum requirements:

  • PhD degree or proven research track record in Computer Science, Mathematics, Machine Learning, Artificial Intelligence, Data Science, or other related fields

  • Scientific publications in a related technical field

  • 5+ years of post- graduate academic or industrial experience in the field of machine learning or AI

  • Previous mentoring or supervision experience

  • Working experience of Tensorflow, Pytorch, Keras or similar frameworks

  • Experience in applying machine learning in real- world applications

  • General machine learning expertise, i.e. regression, classification, and clustering algorithms, time- series analysis, Bayesian methods, self- supervised methods, and generative models

  • Professional habits around model validation, testing, and tracking

  • Strong communication skills

  • A passion for analytics and diving into as well as experiencing the products on which you work

Bonus skills:

Have any sweet experiences with one or some of the following areas? Then we sure like to hear about them!

  • Prototype- to- production engineering skills in Python, including standard methodologies such as proper documentation, library packaging, versioning, testing and task scheduling

  • Experience managing or mentoring other Data Scientists and ML Engineers in a team

  • Contribution to open- source projects

  • Experience in distributed data processing and modelling

  • Experience building data pipelines and ML pipelines

  • Familiarity with a cloud solution - experience in GCP data products is preferred (BigQuery, Cloud Storage, Dataflow, Pub/Sub to name a few)

  • Knowledge in SQL

  • We know that you are into games on some level (casual, console, board- games, Uno etc.).

As a person:

You love to work together with others. In our team we are constantly collaborating with people in other teams so your ability to serve others is key to success. If you are also passionate about learning new things and have a great sense of humour, you will fit in just fine! 


Since the team is based in Stockholm, we prefer if you will work from Stockholm. We are open to consider candidates who will be based in London.

About King

King is the game developer behind the world- famous Candy Crush franchise, as well as mobile game hits including Farm Heroes, Bubble Witch and Pet Rescue. Candy Crush is the top- grossing franchise in US app stores, a position it has held for the last two years, and King’s games are being played by 245 million monthly active users as of Q3 2021. King, which is part of the Activision Blizzard group since its acquisition in 2016, employs nearly 2,000 people in game studios in Stockholm, Malmö, London, Barcelona and Berlin, and offices in San Francisco, New York, and Malta.

A Great Saga Needs All Sorts of Heroes

Making games is fun. Especially when you do it with people who share the same idea of what makes a good workplace great. We design games for everyone, no matter where they are or who they are, and we employ all sorts of people from all kinds of backgrounds to bring them to life. Truth is, we simply cannot expect diversity in our players and originality in our games without first nurturing it in our people. A great saga needs all sorts of heroes.

Making the World Playful

Making the World Playful is what inspires us to create new experiences and raise the bar. It’s what makes King a place where we can all dream bigger, continue to add innovation to our games, broadening the portfolio and exploring new territories in mid- core and casual. We take the art and science of gaming to the next level through our curiosity for the unexplored, passion for games, respect for each other and love for our players - and we’re not afraid to have fun along the way. In fact, together with our parent company Activision Blizzard and experts around the world, we believe having fun is good for you. There has never been a better time to join us. We're dreaming bigger and see a world of possibilities ahead. If you share our passion, our values, and our hunger to shape the future, join us in Making the World Playful!

Applications need to be in English.
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King in Stockholm

“Go and watch the sunset at Skinnarviksberget, it’s the best secret beauty spot in the city.”

This is where it all began. From our Stockholm studio we first embarked on the Candy Crush Saga and the rest is Nordic folklore…

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That’s why we’ve gathered everything essential in this easy-to-read-guide. This way you can enjoy your time fully when you get here – like hiking and eating raw herring.


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Technology & Development @ King

V4P FEB19 014

Technology & Development

We create unforgettable games that are loved by hundreds of millions of players around the world. Every day we experiment, prototype and challenge the norms.

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