Senior Research Scientist

Lisbon, Portugal
R&D – AI Research
Unbabel’s “Translation as a Service” platform allows modern enterprises to understand and be understood by their customers in dozens of languages.

Powered by AI and refined by a global community of tens of thousands of human linguists, Unbabel delivers professional-grade content at the scale required by modern enterprises like Pinterest, Skyscanner, Under Armour and Rovio.

Backed by Scale Venture Partners, Notion, Microsoft Ventures, Salesforce Ventures, Samsung NEXT and Y Combinator, Unbabel is accelerating the shift to a world without language barriers.

We are a diverse team, working everyday to build an outstanding organisational culture, based on strong values of transparency, team spirit and continuous learning, with a fast paced Silicon Valley atmosphere in the beautiful city of Lisbon, Portugal.

We are looking for a Senior Research Scientist to conduct the research that will power the next generation of products at Unbabel.
This is a great opportunity to focus and see the impact of AI in a real business case.


    • Advance the state-of-the-art in Machine Translation, Quality Estimation, and Natural Language Processing
    • Play and active role in NLP and ML research communities
    • Foster partnerships with academia through joint projects
    • Coordinate with other Unbabel teams to understand key challenges of the business and where research can bring value


    • Deep knowledge of Machine Learning and Natural Language Processing (PhD Level)
    • Track record of publications on relevant areas
    • Experience in leading and participating on research projects
    • 3+ years of experience with Machine Learning and Artificial Intelligence techniques and tools
    • 3+ years of experience programming with Python OR C++
    • Hands-on experience in deep learning frameworks (e.g. Tensorflow, PyTorch, DyNet, Marian)
    • Have a critical mindset to judge different approaches and evaluate potential research problems
    • Be goal-oriented and capable of breaking research problems into milestones


    • Competitive salary at one of Europe’s leading startups
    • Stimulating startup environment committed to diversity and inclusion
    • Individual budget for training and conferences
    • Individual budget to setup your own workstation (mechanical keyboard, mouse, etc.)
    • Relocation Package
    • Stock options
    • Health Insurance
    • MacBook Pro and external monitor
    • English or Portuguese language courses
    • Surf trips every Wednesday morning before work
    • Team lunch every Tuesday
    • Drinks and snacks every Friday
    • All-hands trip to the beach once a quarter
    • Yearly company retreat