Backend Software Engineer in Data

Posted One Month Ago
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Bucharest, București, ROU
In-Office
Senior level
Marketing Tech
The Role
Design, build, and maintain low-latency, large-scale backend APIs and data pipelines to ingest, enrich, and manage product catalog data. Ensure high performance (SLAs <45ms), scalability for billions of daily requests, integrate privacy proposals, collaborate across teams, and follow best practices for testing and documentation.
Summary Generated by Built In

What You'll Do:

Partner Data Integration (PDI) is a product and engineering team at Criteo responsible for building the APIs, user interfaces, and data pipelines that power the ingestion, enrichment, and management of product catalog data. The team enables internal and external clients to configure, monitor, and explore catalog data, while developing scalable pipelines to integrate and enhance data quality, ensuring it is accurate, multi-dimensional, and ready for use across Criteo’s Performance and Retail Media platforms

  • Craft high-quality, maintainable code to build business-critical APIs, services and backend components to serve our clients’ creatives ensuring compliance with rigorous SLAs (less than 45ms) and handling up to 40 billion requests per day. 

  • Contribute to integrate and test Google's Privacy Sandbox proposals within CRITEO's creative ecosystem, contributing to a fundamental shift in internet advertising practices. 

  • In a multi-cultural team of 5-7, you will be collaborating closely with your mentor to drive your project, design and ensure best practices are applied. You can ask questions and participate in all knowledge-sharing sessions/workshops, etc. You are encouraged to actively voice your ideas whilst learning how to build and ship quality code into production which will affect millions of users instantly. 

  • Work with many other engineering teams to develop long-term roadmaps, ML models, designs and architectures to scale this infrastructure to meet product and business requirements. 

Who You Are:

  • You are a passionate software engineer with a keen interest in low-latency/large-scale back-end systems combined with a genuine eagerness to understand and implement product and business requirements. 

  • You have at least 5 years of experience with developing and extending large and complex systems.  

  • You are strongly committed to quality designs, automated testing and documentation. 

  • You're proficient in Java OR Scala

  • You have experience with big data technologies (Hadoop, Spark)

  • (Bonus) Familiarity with Machine Learning theory and models. 

We acknowledge that many candidates may not meet every single role requirement listed above. If your experience looks a little different from our requirements but you believe that you can still bring value to the role, we’d love to see your application!​

Who We Are:

We’re Criteo, the Commerce Intelligence Platform. Criteo helps businesses turn shopper signals into commerce outcomes while delivering more relevant experiences for shoppers. We use proprietary commerce intelligence and AI decisioning to drive relevance for shoppers and performance for businesses.
At Criteo, our culture is as unique as it is diverse. From our offices across the globe or from the comfort of home, our 3,600 Criteos collaborate together to build an open, impactful, and forward-thinking environment.
We foster a workplace where everyone is valued, and employment decisions are based solely on skills, qualifications, and business needs—never on non-job-related factors or legally protected characteristics.

What We Offer:

🏢 Ways of working – Our hybrid model blends home with in-office experiences, making space for both. 
📈 Grow with us – Learning, mentorship & career development programs. 
💪 Your wellbeing matters – Health benefits, wellness perks & mental health support. 
🤝 A team that cares – Diverse, inclusive, and globally connected. 
💸 Fair pay & perks – Attractive salary, with performance-based rewards and family-friendly policies, plus the potential for equity depending on role and level. 

 

Additional benefits may vary depending on the country where you work and the nature of your employment with Criteo. 

Skills Required

  • At least 5 years developing and extending large, complex systems
  • Proficient in Java or Scala
  • Experience with big data technologies (Hadoop, Spark)
  • Experience building high-throughput, low-latency backend systems (SLAs <45ms)
  • Experience building business-critical APIs and backend services
  • Strong commitment to quality designs, automated testing, and documentation
  • Ability to collaborate in a multi-cultural team and participate in knowledge sharing
  • Familiarity with Machine Learning theory and models

Criteo Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Criteo and has not been reviewed or approved by Criteo.

  • Healthcare Strength Health insurance and wellness/mental-health support are described as strong parts of the package, with high reported satisfaction for medical, dental, and vision coverage. Feedback suggests these offerings contribute meaningfully to overall benefits satisfaction.
  • Retirement Support A 401(k) with company match is highlighted positively, with mentions of a 3%–5% match being common in recent reports. Feedback suggests the retirement program is a valued component of total rewards.
  • Leave & Time Off Breadth Paid vacation, volunteer time off, and additional summer days are emphasized, and time flexibility is repeatedly praised. Feedback suggests this breadth supports work-life balance perceptions.

Criteo Insights

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The Company
HQ: Paris
2,868 Employees
Year Founded: 2005

What We Do

Criteo is a global technology company that powers the world’s marketers and media owners with trusted and impactful advertising through our world-leading Commerce Media Platform, a suite of products that activates the world’s largest set of commerce data to drive better commerce outcomes. We help thousands of brands, publishers, and retailers reach and monetize audiences and are committed to supporting a fair and open internet that enables discovery, innovation, and choice.

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