Senior Machine Learning Scientist (Generative AI) - Viator
Senior Machine Learning Scientist (Generative AI) - Viator
Posted on :
08-06-2025
Employer Active
1 Vacancy
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Job Description
About Viator
Viator a Tripadvisor company is the leading marketplace for travel experiences. We believethat making memories is what travel is all about. And with 300000 travel experiences toexploreeverything from simple tours to extreme adventures (and all the niche interesting stuffin between)making memories that will last a lifetime has never been easier. With industry-leading flexibility and last-minute availability its never too late to make any day . One app 300000 travel experiences youll remember.
Perks of Working at Viator
- Competitive compensation packages (routinely benchmarked against the latest industry data) including base salary and annual bonus.
- Work your way with flexibility to suit your lifestyle. Viator takes a remote-friendly approach to collaboration across a worldwide team with the option to join on-site as often as youd like.
- Flexible schedule. Work-life balance is ingrained in our culture by design. Trust and accountability make it work.
- Donation matching. Give back Give more! We match qualifying charitable donations annually.
- Tuition assistance. Want to level up your career We love to hear it! Receive annual support for qualified programs.
- Lifestyle benefit. An annual benefit to spend on yourself. Use it on travel wellness or whatever suits you.
- Travel perks. We believe that travel is employee development so we provide discounts and more.
- Employee assistance program. Were here for you with resources and programs to help you through lifes challenges.
- Health benefits. We offer great coverage and competitive premiums.
Our Values
- We aspire to lead. Tap into your talent ambition and knowledge to bring us and you to new heights.
- Were relentlessly curious. We push beyond the usual the known the thats just how its done.
- Were better together. We learn from accept respect support and value one another and are creating something remarkable in the process.
- We serve our customers always. We listen question respond and strive for wow moments.
- We strive for better not perfect. We wont get it right the first time or every time. Well provide a safe environment in which to make mistakes iterate improve and grow.
- Our workplace is for everyone as is our people powered platform. At Tripadvisor we want you to bring your unique identities abilities and experiences so we can collectively revolutionize travel and together find the good out there.
You will work on:
- Research prototype and productionize generative AI models.
- Develop scalable GenAI pipelines that generate high-quality content from product descriptions reviews titles and other product content.
- Design and evaluate prompt tuning strategies and RAG systems to ensure factual and engaging outputs.
- Fine-tune foundation models and develop domain-specific adapters using techniques like LoRA PEFT and instruction tuning.
- Define best practices for model monitoring including output quality hallucination detection and user feedback loops.
- Understanding use cases for Agentic AI communicating your findings with the wider ML team and product.
- Utilize RLHF methodologies to build feedback mechanisms that directly shape the behavior and quality of our generative AI outputs.
- Collaborate cross-functionally with product design and engineering to integrate models into user-facing applications.
- Stay up to date with the latest in GenAI research and help shape internal best practices.
- Design code experiment and implement models and algorithms to enhance customer satisfaction increase supplier value optimize business results and ensure infrastructure efficiency.
- Collaborate with product managers and various business stakeholders to ensure top-quality outcomes to meet internal objectives.
- Investigate and adopt innovative concepts that offer tangible benefits.
To be successful in the role youll need:
- 5 years of hands-on data science experience with at least 2 years of experience with LLM
- Awareness of current LLM techniques prompt tuning evaluations and model monitoring.
- In-depth knowledge of AI/ML/DL Statistics and related open-source libraries.
- Strong skills in SQL and at least one programming language.
- To be comfortable in code reviews discussing architecture and collaborating with a multidisciplinary team for regular model deployments.
- Experience in deploying online solutions and analysing real-time results through A/B testing.
- To be passionate about mentoring junior members of the team and have a strong desire to help us perform to the best of our ability.
- Leadership qualities autonomy and team collaboration skills.
- Clear communication skills awareness of the audience and proactive sharing of findings. Actively involved in business networking and able to communicate complex ideas across the business simply and effectively.
Desired qualifications:
- Masters or PhD in Computer Science Operations Research Statistics or related quantitative disciplines.
- Knowledge in (any or all) User Modelling Representation Learning RecSys Large Language Models (LLM)
- Prior experience in e-commerce or at an Online Travel Agency.
Job Location:This role is a remote position or hybrid in the UK Poland or Portugal. Occasional travel to company offices as necessary.
If you need a reasonable accommodation or support during the application or the recruiting process due to a medical condition or disability please reach out to your individual recruiter or send an email to and let us know the nature of your request. Please include the job requisition number in your message.
#Viator
#LI-Remote
#LI-Hybrid
#LI-JP
Required Experience:
Senior IC
Employment Type
Full Time
Key Skills
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