Senior Machine Learning Scientist

Zendesk
Remote, 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. Zendesk ... (truncated, view full listing at source)
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