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About the Role

The Buyer Domain at Vinted is dedicated to creating a seamless, delightful, and highly engaging experience for members as they search, discover, and purchase items. This role involves tackling the unique challenge of a peer-to-peer catalog with millions of unique, single-inventory listings and millions of new items uploaded daily. The goal is to connect the right buyer with the perfect item in real-time, which is core to Vinted's success. Talented Data Scientists are sought for two specialized, ML-focused teams: Search Relevance and Recommender Relevance.

Responsibilities

Build and optimize end-to-end machine learning models for retrieval, ranking, and personalization.
Partner closely with platform and software engineers to serve models directly in search and recommendation engines, optimizing for high throughput and millisecond-level latency budgets.
Lead or contribute to collaborative design proposals for new modeling approaches, features, or training pipelines.
Define tracking requirements, perform offline evaluations, and design and analyze online A/B tests to measure real-world business impact.
Collaborate with Data, Engineering and Product stakeholders to identify product opportunities, translate business problems into ML objectives, and align on technical trade-offs.
Share knowledge, participate in peer reviews, and actively contribute to the growth and development of other scientists in the ML Guild and the Data Science & Analytics function.

Requirements

A strong collaborator with hands-on experience designing, training, and deploying machine learning models in a production environment (ideally within search, recommendations, or large-scale personalization).
High proficiency in Python and SQL.
Experience with deep learning frameworks and gradient boosting libraries.
Solid understanding of modern information retrieval, Learning-to-Rank (LTR), semantic search, or sequence-based user preference modeling.
Experience or strong interest in high-performance model serving.
Familiarity with search/vector engines like Vespa or Elasticsearch, and serving frameworks like Triton, is a plus.
Comfort working with massive datasets in modern cloud-based data warehouses.
Strong grasp of statistics, offline evaluation metrics, and online A/B testing methodologies.

Skills

Python
SQL
Deep learning frameworks
Gradient boosting libraries
Information retrieval
Learning-to-Rank (LTR)
Semantic search
Sequence-based user preference modeling
High-performance model serving
Vespa
Elasticsearch
Triton
Cloud-based data warehouses
Statistics
Offline evaluation metrics
Online A/B testing methodologies

Location

Vilnius

Work Type

Hybrid

Experience Level

Mid-level

Salary/Compensations

€61.200—€100.100 EUR

Benefits

Share options programme
30 days of paid annual leave
Newest MacBook models
Digital mental and emotional health support and Employee Assistant Program (EAP)
Home office support: IT workstation equipment and a personal budget of up to €540 for home workplace furniture
Lunch benefit per workday
Frequent team-building events
A personal monthly budget for shopping on Vinted
Access to a discounted gym membership plan
Pension Plan with Vinted matching 150% of your chosen contribution
Supplemental Private Health Insurance
Life and Disability insurance
A subsidised Deutschlandticket for your commute to the office by public transport
The opportunity to spend up to 90 days per year on workation (21 of which can be spent working outside of the EU)
A dog-friendly office
Individual Learning Budget: annual learning budget to support personal and career development through courses, certifications, workshops and more.

About the Company

Vinted's mission is to make second-hand the first choice. The Vinted Group consists of Vinted Marketplace (Europe’s leading platform for second-hand fashion), Vinted Go (enhancing the shipping experience), and Vinted Pay (dedicated to secure payments). Founded in 2008 in Lithuania, Vinted became Lithuania's first unicorn in 2019. The company has grown with offices across Europe and a team of over 2,000 people.

Equal Opportunity

The Vinted Group is committed to building an inclusive workplace where people from all walks of life feel a sense of belonging. We welcome applications from people of all backgrounds, identities and life experiences. At Vinted, all applicants are treated fairly without regard to their race, age, religion or belief, sex, national origin, citizenship, gender identity, sexual orientation, disability, or any other protected characteristic.