Principal Decision Scientist

At Hostelworld (Permanent), in Porto, PortugalExpires at: 2026-03-26Remote policy: Full remote
WHO YOU'LL WORK WITH
Hostelworld operates a matrixed structure, with Growth teams comprising Technology, Product, Marketing and Analytics & Insights (A&I), all aligned to common objectives.
This role sits within the A&I function and partners closely with the Mobile Growth organisation, supporting multiple sub-teams including Chat, Travel Plans, Core Experience, Inventory Expansion, Monetisation and CRM. These teams collectively own the mobile customer journey and are central to Hostelworld’s growth strategy.
The Principal Decision Scientist acts as the senior analytics lead across Mobile Growth, providing technical direction, strategic insight, and analytical governance to ensure consistent, high-quality decision-making across pods.
The core toolset includes Snowflake

&

DBT for data modelling and transformation, Tableau for BI reporting, and mobile platforms such as Firebase, Appsflyer, Iterable and Sendbird.
WHAT YOU'LL DO

Act as the senior analytical authority for Mobile Growth, providing guidance on measurement strategy, data dependencies, and best practice
Translate complex data into strategic insights that inform Product, Growth and commercial decision‑making
Partner with Product and Engineering leadership to shape roadmaps and define success metrics
Lead analytics design for complex or high‑risk initiatives (e.g. attribution changes, architecture updates, major Mobile feature launches)
Ensure data quality, tracking integrity, and alignment across Firebase, Appsflyer, Iterable, Sendbird and downstream reporting
Provide coaching and non‑line‑management mentorship to analysts across six Mobile Growth sub‑teams
Drive knowledge sharing through documentation, forums and best‑practice guidance
Improve analytics delivery through prioritisation frameworks, process optimisation and workflow management
Support coordination of analytics demand across multiple Product teams
Lead or contribute to wider A&I functional improvement initiatives

What We’re Looking For

5+ years’ experience in commercial data analytics, ideally within mobile‑first, product‑led or e‑commerce environments
Deep expertise in SQL and data modelling using modern data stacks (Snowflake, DBT)
Strong experience with mobile analytics platforms such as Firebase, Appsflyer and Iterable
Demonstrated ability to influence senior stakeholders without direct authority
Excellent analytical and problem‑solving skills
Strong commercial mindset with the ability to connect analytics to tangible business outcomes
Experience mentoring and developing analysts across different skill levels
Excellent communication skills, with the ability to clearly explain complex insights
Fluent English (spoken and written)

What We Offer

Competitive salary & benefits
Enhanced annual leave plus 3 Wellbeing Days per year
Paid family leave (maternity, paternity, surrogacy & adoption)
Agile working (plus a Working from Abroad Policy)
Support for your ongoing growth & development
Inclusive people policies (sickness, menopause, compassionate and fertility leave)
A chance to give back to your local community with 5 paid volunteering days

Our Behaviours

Grow others - We fundamentally believe that investing in growing others benefits everyone, whether it's helping them develop hard or soft skills. We want learning and growing to be part of our DNA to help makes us a better team, together.
Master it - We are obsessed with our area of expertise and enjoy developing our skills. We rarely take things at face value; we investigate, interrogate, and always look for ‘the why,’ and wherever possible, we use data to find the best solution.
Collaborate - We are in it together, for the tough stuff and the celebrations too. To achieve the best results, we need expertise from all areas of the organisation, and we wholeheartedly welcome diverse thinking.
Adapt - We work fluidly, adapting to new information and the evolving environment while staying committed to our goals. Innovation and experimentation fuel our projects and we’re never afraid to pivot.
Deliver - Our focus is always on the end result; we value outcomes over activity. We collaborate to deliver work at speed without dropping any of our other behaviours.

We believe in talented and diverse teams that reflect the diversity of our customers and the communities in which we operate. Everyone brings different perspectives and experiences. We lay out the above requirements to guide applicants to the experiences that we believe will allow you to be successful in the role. If you don’t meet them all, please consider applying if you think you can still perform the role as described.
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