Senior Machine Learning Scientist (Viator)

TripAdvisor LLC; City of London; Hybrid; GBP 75,000 - 100,000; Full time

Job summary

A leading online travel marketplace is seeking a Senior Machine Learning Scientist to design and implement algorithms that enhance customer satisfaction. The ideal candidate will have over 5 years of data science experience, a strong grasp of AI/ML techniques, and excellent communication skills. This position offers the flexibility to work remotely or on-site in the UK, with opportunities for mentoring and collaboration across teams.

Benefits

Competitive compensation packages

Flexible schedule

Donation matching

Tuition assistance

Lifestyle benefit

Travel perks

Employee assistance program

Health benefits

Qualifications

• 5+ years of hands-on data science experience.
• In-depth knowledge of AI/ML/DL, Statistics, and related open-source libraries.
• Strong skills in SQL and at least one programming language.
• Experience in ML model productization and a grasp of MLOps.
• Clear communication skills with the ability to convey complex ideas simply.

Responsibilities

• Design, code, experiment and implement models and algorithms.
• Analyse large datasets to extract key insights.
• Collaborate with product managers and business stakeholders.
• Investigate and adopt innovative concepts.
• Employ techniques like Deep Learning and Recommendation Systems.

Skills

Hands-on data science experience

In-depth knowledge of AI/ML/DL, Statistics

Strong skills in SQL and programming

ML model productization and MLOps

Leadership qualities and mentoring

Education

Master's or PhD in relevant field

Tools

Open-source ML libraries

Job description

Senior Machine Learning Scientist (Viator)

London, England, United Kingdom

About Viator

Viator, a Tripadvisor company, is the leading marketplace for travel experiences. We believe that making memories is what travel is all about. And with 300,000+ travel experiences to explore—everything from simple tours to extreme adventures (and all the niche, interesting stuff in between)—making memories that will last a lifetime has never been easier. With industry‑leading flexibility and last‑minute availability, it's never too late to make any day extraordinary. Viator. One app, 300,000+ travel experiences you’ll remember.

Perks of Working at Viator

• Competitive compensation packages (routinely benchmarked against the latest industry data), including base salary and annual bonuses
• “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 you’d 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. We’re here for you with resources and programs to help you through life’s 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.
• We’re relentlessly curious. We push beyond the usual, the known, the “that’s just how it’s done.”
• We’re 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 won’t get it right the first time – or every time. We’ll 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:

Design, code, experiment and implement models and algorithms to enhance customer satisfaction, increase supplier value, optimize business results, and ensure infrastructure efficiency.

Analyse large datasets including daily customer events, product, destination, supplier and pricing info, extracting key insights to spur innovation and improvement.

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.

Employ techniques like Deep Learning, Bayesian Modelling, Large Language Models, Product embedding, Recommendation Systems, and Computer Vision.

To be successful in the role, you'll need:

• 5+ years of hands‑on data science experience.
• In‑depth knowledge of AI/ML/DL, Statistics, and related open‑source libraries.
• Awareness of current ML techniques, keen on self‑improvement and striving to solve real‑world data challenges.
• Strong skills in SQL and at least one programming language.
• Experience in ML model productization and a grasp of MLOps.
• Comfort 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.
• Passion for mentoring junior members of the team and 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.
• Active involvement in business networking and ability to communicate complex ideas across the business simply and effectively.

Desired qualifications:

• Master's or PhD in Computer Science, Operations Research, Statistics, or related quantitative disciplines.
• Knowledge in Large Language Models (LLM), dynamic pricing, image processing, or recommendation systems.
• Prior experience in e‑commerce or at an Online Travel Agency.

Job Location: This role offers flexibility, allowing you to work either on‑site hybrid or remotely from the UK or Poland. Occasional travel to company offices may be required.

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 [e-mail] and let us know the nature of your request. Please include the job requisition number in your message.