---
title: 'Data Scientist (Pre-Search) at Trendyol'
canonical: 'https://feeny.ai/job/data-scientist-pre-search-trendyol-istanbul-0xzk4xghkjpm'
type: 'job'
last_seen: '2026-09-10'
---

# Data Scientist (Pre-Search) at Trendyol

- **Company:** Trendyol
- **Location:** Istanbul, Turkey / Maslak
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-09-01
- **Last confirmed live:** 2026-09-10
- **Apply:** https://jobs.lever.co/trendyol/33c48e9f-762d-4081-ba43-ff7be9844310

## Job description

## About the Team

At Trendyol Tech, our mission is to create a positive impact in our ecosystem by enabling commerce through technology. We solve complex problems with data, creativity, and agility — always driven by real outcomes. With a culture built on learning, collaboration, and ownership, we grow together while building what’s next.

## About the Role

Our team builds the language intelligence and retrieval foundations behind Trendyol Search across multiple regions. We focus on helping customers express their intent accurately and discover relevant products quickly, regardless of the language or market they search in. As a Data Scientist, you will work on high-impact problems at the intersection of NLP, information retrieval, and e-commerce search. You will contribute to multi-regional search models covering spelling correction, query understanding, semantic and vector search, while taking particular ownership in improving the Arabic-language search experience. Your work will directly improve product discovery for millions of customers across Trendyol's markets.

## Responsibilities

- Develop and improve query understanding capabilities for Trendyol's search experience across multiple regions and languages, including spelling correction, query normalization, query rewriting, intent detection, and semantic retrieval.
- Build and evaluate vector search, embedding, and retrieval models that improve the relevance of product discovery for customers across different markets.
- Take a leading role in Arabic-language search initiatives, addressing language-specific challenges such as dialectal variation, orthographic normalization, transliteration, morphology, mixed-language queries, and spelling errors.
- Analyze large-scale structured and unstructured data, including search queries, product content, user interactions, and linguistic signals across the Trendyol ecosystem.
- Design robust offline evaluation methodologies and quality metrics for query understanding, spelling correction, and retrieval systems; validate improvements through online A/B experiments.
- Collaborate closely with Search, Pre-Search, Ranking, Product, and Engineering teams to translate customer and business needs into scalable machine learning solutions.
- Improve model quality, latency, reliability, and deployment cycles by applying MLOps best practices to production ML systems.
- Monitor model and search-quality performance after deployment, investigate regressions, and continuously iterate based on data and user feedback.
- Communicate methodology, findings, and expected business impact clearly to technical and non-technical stakeholders.

Expected Qualifications

- Experience in applied data science and machine learning, ideally in NLP, information retrieval, search, or language modeling domains.
- Professional working proficiency in Arabic, with a strong understanding of Arabic grammar, morphology, spelling conventions, dialectal variation, and common search-query behavior. Native-level proficiency is a strong plus.
- Practical experience with modern NLP methods, including transformer-based language models, text embeddings, semantic search, retrieval, reranking, query understanding, or spelling correction.
- Familiarity with Arabic NLP resources, datasets, tokenization or normalization approaches, and evaluation challenges is highly preferred.
- Strong Python skills and hands-on experience with relevant ML libraries such as PyTorch, TensorFlow, scikit-learn, Hugging Face Transformers, or similar frameworks.
- Strong SQL knowledge and familiarity with data-analysis best practices.
- Experience with vector databases, approximate nearest neighbor search, embedding models, or large-scale retrieval systems is a strong plus.
- Experience designing and interpreting A/B experiments, offline evaluations, and statistical analyses.
- Strong analytical skills, a data-driven mindset, and the ability to work effectively with ambiguous product problems.
- Excellent written and verbal communication skills in English. Turkish is a plus.
- Experience in e-commerce, marketplaces, search, recommendation, or self-service platforms is a plus.

## What We Offer

- Hybrid working model with flexibility: a schedule that helps you find the right balance between flexibility and team bonding, including work-from-abroad opportunities and a summer working model.
- Customisable FlexBenefits budget: Adjust your daily meal allowance, choose your health insurance package (and extend it to your spouse or children), and pick from additional benefits like fuel support or Trendyol shopping credits.
- Well-being support: Access to location-based in-house doctors, as well as psychologist and dietitian support, and HPV vaccination provision.
- Personalised training allowance and learning opportunities: Use your annual budget for any training or conference of your choice, explore our Learning Management System (LMS) anytime, and join in-person learning sessions offered throughout the year.
- Responsibility from day one: Take full ownership from the start in a culture where every voice is heard and valued.
- A diverse, international team: Collaborate with global peers across our offices in Berlin, Amsterdam, Dubai, and beyond, in a startup-spirited and collaborative environment.
- Opportunities to grow with the best: Tackle meaningful challenges, develop through hands-on experience, and grow with the support of expert guidance and global mentoring.
- Meaningful connections beyond tasks: Be part of team rituals, events, and social activities that help us stay connected and inspired.

Take the Next Step If this role excites you, apply today, we look forward to taking the next step with you. Want to get to know the team better first? Explore our Career Website, LinkedIn, or YouTube to learn more about #LifeatTrendyol and how we work.

## About Trendyol

## Company Overview
- **One-liner**: Trendyol is Turkey's leading e-commerce platform and a top EMEA player, operating a tech-driven ecosystem that connects customers, sellers, payments, and delivery across 35 countries.
- **Entity Type**: Private (decacorn; 70% owned by Alibaba Group)
- **Headquarters**: Istanbul, Turkey (Maslak Campus, Spine Tower)
- **Founded**: 2010
- **Founders**: Demet Mutlu, Evren Üçok, Begüm Tekin

## Core Business
- **Primary industry**: E-commerce / Online marketplace (with integrated logistics, fintech, and technology services)
- **Target customers**: B2C (consumers) and B2B/B2B2C (sellers, local manufacturers, brands)
- **Mission or purpose**: To provide customers globally with a seamless e-commerce experience, while enabling the digital transformation of hundreds of thousands of sellers and supporting inclusion in the digital economy — including women entrepreneurs.

## Products & Services
- **Trendyol Marketplace**: The core e-commerce platform offering fashion, electronics, home goods, and more to ~40 million customers, with 2.5+ million packages delivered daily.
- **Trendyol Tech**: One of the region's leading R&D hubs, powering AI-driven recommendations, data capabilities, and marketplace infrastructure.
- **Trendyol Express**: A fast-growing in-house delivery network handling first-mile and last-mile logistics.
- **Dolap**: The largest second-hand goods platform in the region, integrated into the Trendyol ecosystem.
- **Trendyol Fintech**: Payments and embedded financial services arm supporting transactions within the ecosystem.
- **Trendyol Go (by Uber Eats)**: On-demand delivery service (noted in alumni talent flows; part of the broader ecosystem).

## Market Standing
- **Valuation/Market Cap**: Decacorn status (valued at over $10B; exact figure not publicly disclosed). Backed by Alibaba Group, General Atlantic, SoftBank Vision Fund, Princeville Capital, and leading sovereign wealth funds.
- **Key Metric**: Annual Revenue: **$2.5B** (reported); Total Funding: **$1.89B** across 5+ rounds, including a $1.5B private equity round in August 2021 led by General Atlantic and SoftBank Vision Fund.
- **Notable Investors/Partners**: Alibaba Group (majority owner, ~70%), General Atlantic, SoftBank Vision Fund, Tiger Global Management, Kleiner Perkins, Princeville Capital.
- **Growth Signals**:
  - Headcount grew **+12.4% YoY** to 5,973 employees; active job postings up **+100% YoY**.
  - International expansion across Gulf and Central & Eastern Europe; now serves **10M+ international customers** (Romania, KSA, UAE, Germany, Netherlands, and more).
  - Workforce distributed across **30 countries**.
  - Ecosystem expansion into fintech and second-hand marketplace (Dolap).

## Competitive Advantages
- **Alibaba backing**: Strategic ownership provides capital, supply chain expertise, and global best practices.
- **Integrated ecosystem**: Unlike pure-play marketplaces, Trendyol owns its tech R&D, logistics network (Trendyol Express), fintech arm, and second-hand platform — creating strong lock-in across the value chain.
- **Scale and data moat**: 40M customers, 2.5M+ daily packages, and AI-driven systems generate compounding data advantages for personalization and seller tools.
- **Regional dominance**: The leading e-commerce platform in Turkey, a top player across EMEA, with deep local seller/manufacturer relationships.

## Strategic Focus
- **International expansion**: Growing aggressively in the Gulf region (especially Saudi Arabia) and Central & Eastern Europe (Romania and beyond).
- **Fintech growth**: Expanding payments and embedded financial services within the ecosystem.
- **Sustainability**: Executing the Trendyol Sustainable Impact Plan focused on responsible growth, people, and planet.
- **Seller empowerment**: Continuing digital transformation for hundreds of thousands of sellers, including support for women entrepreneurs.

## Why Work Here
- **Culture**: Values include "Customer First," "Stronger as a Team" (#OneDreamOneTeam), "Always Sincere and Humble," "Strive to Be Better Every Day," "Results Matter," and "Trust in Data." The company describes itself as having a startup spirit with open communication and constructive feedback.
- **Work environment**: Hybrid work arrangements (e.g., hybrid roles in Bucharest and Istanbul); flexible work policies; a young, diverse team — average age 32, with 35+ nationalities represented.
- **Growth & development**: Comprehensive onboarding, diverse learning programs, rotation opportunities, and early empowerment/ownership for new hires.
- **Scale with startup energy**: Opportunity to work on tech challenges at massive scale (2.5M+ daily packages, AI systems, logistics tech) while maintaining an agile, dynamic culture.
- **Engineering & technical team**: ~1,600 technical employees (14% of workforce); strong talent pipeline from companies like Hepsiburada, Amazon, Turkcell, and Getir.

## Sources
1. [careers.trendyol.com](https://careers.trendyol.com/)
2. [careers.trendyol.com - Life At Trendyol](https://careers.trendyol.com/life-at-trendyol)
3. [careers.trendyol.com - Culture](https://careers.trendyol.com/culture)
4. [jobs.lever.co/trendyol](https://jobs.lever.co/trendyol)
5. [linkedin.com/company/trendyolgroup](https://linkedin.com/company/trendyolgroup)

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