Full-Time

Staff Data Scientist

Posted on 11/24/2025

Vestiaire Collective

Vestiaire Collective

501-1,000 employees

Global marketplace for pre-owned luxury fashion

No salary listed

Berlin, Germany

Hybrid

Category
Data & Analytics (1)
Required Skills
Scikit-learn
MLOps
Microsoft Azure
Python
NoSQL
Data Science
Tensorflow
Pytorch
BigQuery
SQL
AWS
OpenCV
SpaCy
Computer Vision
Snowflake
Google Cloud Platform
Requirements
  • 6+ years of experience in data science, machine learning engineering, or AI development, with a strong focus on computer vision applications and customer facing models
  • Deep expertise in applied AI/ML (computer vision, anomaly detection, fraud/risk modeling).Track record of leading technical initiatives and influencing decisions across teams
  • Experience in architecturing, deploying, and maintaining AI systems at scale
  • Proficiency in programming languages such as Python and experience with relevant libraries/frameworks (e.g., TensorFlow, TorchServe, TensorflowServing, PyTorch, scikit-learn, spaCy, Hugging Face Transformers, OpenCV)
  • Deep understanding of machine learning algorithms, statistical modeling, and data manipulation techniques
  • Experience with data visualization tools and communicating insights effectively
  • Strong problem-solving skills, with the ability to tackle complex, ambiguous problems
  • Ability to work independently and collaboratively in a fast-paced, global team environment
  • Experience with cloud platforms (e.g., AWS, GCP, Azure) and MLOps practices is a plus
  • Experience building or maintaining customer service chatbot systems is a plus
  • Familiarity with database technologies (SQL, NoSQL) and cloud data warehouse (BigQuery/Snowflake)
  • Excellent communication and interpersonal skills
  • Fluency in written and spoken English (please send your application in ENGLISH only)
Responsibilities
  • Design and own end-to-end AI/ML solutions for item quality and authenticity detection, spanning:Image analysis (detecting marks, defects, wear, size inconsistencies).
  • Text and metadata understanding (brand, sizing, category anomalies)
  • Counterfeit and fraud detection modelsDesign, prototype, and iterate on AI models that directly power and improve customer-facing experiences on our platform (e.g., smarter assistance)
  • Collaborate closely with the Product and Curation teams to define requirements, integrate AI models into their workflow, and provide insights to enhance their verification processes
  • Advise and direct data/feedback collection for continuous improvement and monitoring of the performance of the models
  • Perform rigorous model evaluation, A/B testing, and continuous improvement of AI models
  • Work with engineering teams to ensure seamless deployment and integration of AI models into our existing platforms
  • Research and stay updated on the latest advancements in AI, machine learning, deep learning and computer vision to identify new opportunities and best practices
  • Mentor senior and mid-level data scientists, raising the technical bar on modeling, data quality, and experimentation best practices
  • Communicate complex technical concepts and findings to both technical and non-technical stakeholders
Desired Qualifications
  • Experience with cloud platforms (e.g., AWS, GCP, Azure) and MLOps practices is a plus
  • Experience building or maintaining customer service chatbot systems is a plus
  • Fluency in written and spoken English

Vestiaire Collective runs a global online marketplace for pre-owned luxury fashion. It connects sellers with buyers, handling listings, authentication, payment, and shipping, and earns commissions on each sale. The platform differentiates itself with strict authenticity checks, a curated selection of designer items, and a large global buyer-seller community to ensure trusted, high-quality transactions. Its goal is to make high-end fashion more accessible and sustainably reuse luxury items by providing a trusted marketplace for buying and selling.

Company Size

501-1,000

Company Stage

Late Stage VC

Total Funding

$729.5M

Headquarters

Paris, France

Founded

2009

Simplify Jobs

Simplify's Take

What believers are saying

  • AI innovations under new CPO Thomas Hezard and CTO Rémi Bouchez boost user experience.
  • Isabel Marant partnership curates hand-picked vintage pieces for resale pop-ups.
  • Vintage listings surged 220% over past five years amid sustainability demand.

What critics are saying

  • Vinted captures 20-30% listings with zero-commission incentives in 3-9 months.
  • ReSee poaches 10% handbag volume using 3x faster AI authentication since April 2026.
  • The RealReal erodes market share with faster shipping and lower fees in 6-12 months.

What makes Vestiaire Collective unique

  • Expert authentication verifies every preloved luxury item before shipping.
  • Curates 12,000+ designer brands like Chanel, Louis Vuitton, and Hermès exclusively.
  • Launched resale buying guide ranking items by five-year value growth in 2025.

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Your Connections

People at Vestiaire Collective who can refer or advise you

Benefits

Professional Development Budget

Company Equity

Paid Vacation

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

1%

2 year growth

0%
Drapers
Mar 19th, 2026
Vestiaire Collective restructures executive team.

Vestiaire Collective restructures executive team. Vestiaire Collective has appointed Thomas Hezard as chief product officer and Rémi Bouchez as chief technology officer as the luxury resale business aims to place product and technology at the centre of its next innovation cycle. Vestiaire Collective's Thomas Hezard (left) and Rémi Bouchez Hezard and Bouchez will lead their respective teams to drive Vestiaire Collective's innovation, particularly through artificial intelligence, and improve the user experience across the resale platform. Both executives have been with Vestiaire Collective for more than seven years. Hezard previously served as chief strategy and people officer. He has also held roles including VP operations and customer experience and VP commercial, leading teams of over 100 staff and managing global trust, curation, authentication, and commercial operations. Prior to joining the company, he worked at Boston Consulting Group as a project leader. Bouchez most recently served as VP of engineering for buyer experience. He has also led mobile engineering and supply-side technology teams, and began his career as a developer with technology companies including RedShift and SQLI. Vestiaire Collective CEO Bernard Osta said: "Together, Thomas and Rémi will drive our innovation agenda, strengthen our leadership, and help shape the future of secondhand fashion." The appointments come as Vestiaire Collective looks to accelerate growth in resale and position technology and product at the heart of its strategy. Osta was promoted to the role of CEO in October 2025, succeeding Maximilian Bittner, who had led the business for seven years, followed by the departure of Vestiaire Collective co-founder Fanny Moizant in January.

Sustainable Future
Jan 7th, 2026
Vestiaire pushes out co-founder and President Fanny Moizant

Vestiaire pushes out co-founder and president fanny Moizant. Fanny Moizant has been at the forefront of the circular fashion movement, co-launching Vestiaire Collective from her Paris apartment 16 years ago. On Jan. 5, she shared on LinkedIn that the company is forcing her out as president. Moizant cited "organizational changes" at the business, which sells "pre-loved" authenticated luxury items from the likes of Gucci, Yves Saint Laurent and Chanel. "This was not a decision I initiated, nor one I expected, but I accept that it marks the end of an extraordinary chapter," she wrote. "Since co-founding Vestiaire Collective in 2009, I've had the immense privilege of building a company with a soul, a purpose, and a powerful mission: changing the fashion industry from the inside - one second-hand item at a time." Vestiaire counts 23 million users in 70 nations, with tens of thousands of new listings every day. The private company is a certified B Corporation. Moizant, who received knighthood from the French government in 2023, has been bullish about the potential for "pre-loved" luxury growth. High-end and secondhand fashion sales will reach $360 billion by 2030, according to an October report by Vestiaire and Boston Consulting Group. It found resale growing three times faster than sales of equivalent new items. Authentication challenges. At the same time, Vestiaire acknowledges the high costs of fending off dupes. It combines digital authentication with in-person, white-glove inspection of streetwear, handbags and watches. Vestiaire takes on the liability and refunds knockoffs, if they creep into a sale. The centralized approach to circularity contrasts with that of other peer-to-peer merchants such as Vinted, through which sellers and buyers ship directly to one another. Authentication requires so much work that Vestiaire launched a controversial carbon credits program to help fund it. On Oct. 3, the company began offering credits on an independent marketplace. Each credit represents emissions savings generated through secondhand purchases on Vestiaire. Vestiaire carries more than 13,000 luxury and boutique brands but bans mid-range, high-production staple labels, including Gap, H&M and Zara. It's among the few e-commerce resale players offering menswear. The company has raised $722.3 million total, with the last, undisclosed round in January 2024, according to Crunchbase. In 2021 Vestiaire reached "unicorn" status, with a valuation above $1 billion, after it raised $208 million from Gucci owner Kering Group and Tiger Global Management. Shifting leadership. CEO Bernard Osta, who joined Vestiaire Collective in October, has been emphasizing AI to enhance authentication and user experiences. Promoted from CFO and strategy lead, he's a former Goldman Sachs and Lazard investment banker. Osta replaced CEO Maximilian Bittner, co-founder of the Lozada marketplace, now part of Alibaba. Moizant's path to knighthood. The idea for a trusted consignment service emerged as Moizant restocked her closet after having two daughters. Through word of mouth, she met several people with a parallel idea, and they eventually joined forces as co-founders. The company's original name, Vestiaire de Copines, translates to "your friends' wardrobe." It launched around the same time as Vinted and ThredUp, and ahead of Poshmark and The RealReal. In addition to founding Vestiaire Collective and evangelizing circular luxury fashion, Moizant is credited with expanding the business into Europe and Asia Pacific. Among her cofounders: Sophie Hersan remains at Vestiaire as fashion director shaping brand and sustainability; Sébastien Fabre runs luxury resale rival ReSee; Christian Jorge exited in 2017 to co-found Arianee and Omie & Cie; and Alexandre Cognard and Henrique Fernandes left earlier. In 2023, France awarded Moizant and Hersan the National Order of Merit, with the grade of Chevalier, or knight. Before Vestiaire, Moizant had worked for designer John Galliano and attended L'Institut Français de la Mode. Praise for Moizant. "The success of Vestiaire Collective was built first and foremost on its incredible brand, driven by your unique understanding of our customers, the zeitgeist and incredible story telling," Bittner commented on Moizant's LinkedIn post. "Above that, even more importantly, you are a great entrepreneur, pioneer and leader, who inspired those around you, including me, every day." "Sixteen years of shaping circularity not only left a mark on the industry, it redefined it forever," wrote Melissa McDermott, founder and CEO of Reclaim of Barcelona. "Her intuition for brand and product, her deep understanding of the fashion community and her early commitment to circularity have profoundly shaped the company's identity, DNA and mission." a Vestiaire Collective spokeswoman told Trellis.

VideoRunRun
Mar 22nd, 2025
Pre-Flight: How Vestiaire Collective optimized its Video Ads in 72 hours to avoid Budget waste

Vestiaire Collective partnered with VideoRunRun and leveraged its Creative Intelligence Pre-Flight Analysis - a powerful combination of AI models, creative scoring, and expert recommendations.

Fashion Dive
Dec 3rd, 2024
Upcycled clothing, accessories collection launches on Vestiaire Collective

Luxury resale platform Vestiaire Collective has partnered with nonprofit group the Or Foundation to sell a collection of upcycled clothing and accessories made from T-shirts, tapestries, denim and sweatshirts by designers in Ghana, according to a press release from the Or Foundation Friday.

FashionNetwork.com
Oct 7th, 2024
Vestiaire Collective boosts senior executive team, AI services

Vestiaire Collective has also announced the forthcoming appointment of US executive Jim Freeman to its board of directors.

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