Senior Machine Learning Scientist
ZendeskRemote, PortugalPosted 27 March 2026
Job Description
Job Description
Zendesk’s people have one goal in mind: to make Customer Experience better. Our products help more than 125,000 global brands (AirBnb, Uber, JetBrains, Slack, among others) make their billions of customers happy, every day.
Our team is responsible for helping Customer Experience teams to achieve their best, by intelligently solving repetitive work, so they can shift their focus to solving more sophisticated problems. We use the latest trends in Machine Learning algorithms to help us on that mission, and we're passionate about empowering our customers.
You will be embedded in a multi-functional team, closely collaborating with scientists, engineers and product managers. You will contribute to the research road map of Zendesk, by researching and building efficient machine learning solutions that can power AI capabilities, such as intelligent triage and admin center recommendations.
What you’ll be doing
Pair with applied ML scientists to learn about our technology stack and architecture
Collaborate with ML teams to research, build and improve efficient AI solutions with a significant impact on customer support
Solve meaningful and challenging problems with recent ML techniques including neural networks and information retrieval
Support productionizing ML techniques and learn how to design for scale
Collaborate with hardworking, experienced, and humble colleagues around the globe
Present your work to a multi-disciplinary, global audience
Stay up to date with recent literature in Machine Learning and Natural Language Processing (NLP) and share knowledge internally
Champion initiatives to improve the quality and robustness of Zendesk AI capabilities
What you bring to the role
Required experience
MSc degree in computer science, electrical engineering, math, or related areas
A solid foundation in statistics and machine learning techniques
Good programming skills in Python
Experience with at least one of the main deep learning libraries, preferably PyTorch
A desire to learn and grow
Be curious and eager to understand the fundamentals of AI in a critical way
Be pragmatic and results oriented
Preferred requirements
PhD degree in computer science, electrical engineering, math, or related areas.
Knowledge and experience with Natural Language Processing (NLP) is a bonus, specifically related to generative language models and information retrieval
Great written and verbal communication skills, with experience conveying technical concepts to a diverse audience of partners
A collaborative and can-do attitude
What we offer
Ownership of the product features implementation you work on
What you will be doing will have a huge impact
Team of passionate people who love what they do!
Exciting features, ability to implement your own ideas and improvements
Opportunity to learn and grow!
Possibility to specialise in areas like security, performance and reliability
...and everything you need to be effective and maintain work-life balance
Flexible working hours
Professional development funds
Comfortable office and a remote setup
Premium Medical Insurance as well as Private Life Assurance
#LI-AO1
The intelligent heart of customer experience
Zendesk software was built to bring a sense of calm to the chaotic world of customer service. Today we power billions of conversations with brands you know and love.
Zendesk believes in offering our people a fulfilling and inclusive experience. Our hybrid way of working, enables us to purposefully come together in person, at one of our many Zendesk offices around the world, to connect, collaborate and learn whilst also giving our people the flexibility to work remotely for part of the week.
As part of our commitment to fairness and transparency, we inform all applicants that artificial intelligence (AI) or automated decision systems may be used to screen or evaluate applications for this position, in accordance with Company guidelines and applicable law.
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