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Backend Software Engineer

  • Hybrid -
    • Bucharest, Romania
    • Yerevan, Armenia
    • Limassol, Cyprus
  • Engineering
  • Permanent - Full Time

Backend Software Engineer

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Job ID: r18203

What You'll Do:

As a Back-End Engineer at Criteo Commerce Grid, you'll create top-tier business products that help our clients maximize publisher revenue, enhance advertiser outcomes, and unlock the true value of their shopper data.

While we’re open to candidates with experience in any backend programming language (such as Python, Go, C++, Perl, Ruby Java, Node.js, .Net or similar), a willingness to transition to Lua is essential. For this we provide enough time and the right environment

Main Responsibilities:

  • Design and Develop: Build, ship, and maintain real-time services handling 1 million bidding requests per second.
  • Prioritize: Balance product and customer priorities with operational and technical needs.
  • Ensure Quality: Deliver top-quality code through code reviews, unit tests, integration tests, and end-to-end tests in a continuous integration environment.
  • Collaborate: Work closely with UI and Product teams to deliver services that our customers love.
  • Integrate: Perform technical integrations with large international online advertising platforms.
  • Enhance Inventory: Enrich advertising inventory with signals from diverse sources such as user interests, web page contextual information, and buying behaviors.
  • Innovate: Develop new advertising methods within a Google Privacy Sandbox environment.

Who You Are:

  • Educational Background: BS in Software Engineering or a related field.
  • 4+ years of programming experience, proficient in writing code and unit tests in an Object-Oriented Programming language.
  • Experience with any of these languages is a big plus: GO, C++, C#, Perl, Ruby, Python, Lua, Java, Node JS
  • Technical Knowledge: Strong understanding of computer science concepts including data structures, algorithms, and optimization.
  • Product Focused: Dedicated to creating the best customer experience.
  • Quality commitment: Strong commitment to quality design, automated testing, and thorough documentation.
  • Passion for Coding: Enthusiastic about shipping high-performance, quality code.
  • Ownership: A strong sense of ownership with a proactive approach to problem-solving.
  • Creative Technologist: A problem solver, fixer, and innovative technologist who sees coding as a talent and passion, not just a skill.
  • Team Player: Excellent communicator and efficient collaborator who can work well with others.

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:

Criteo is a leader in commerce media, helping brands, agencies, and publishers create meaningful consumer connections through AI-powered advertising solutions. We’re shaping a more open and sustainable digital future for advertising.

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.

Perks & Benefits for all Criteos.

Happy people make healthy teams, so we value employee well-being above all else. Discover the perks & benefits we offer all our Criteos!!

Ways of Working

Trust and flexibility are at our core, so is the power of being together. Our hybrid model blends empowerment with shared in-person experiences, making space for both. We believe this is the most valuable way to foster collaboration in a way that helps us grow, together.

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Learning & Career Development

As your skills multiply, opportunities do too. So, we care to help you nurture your potential, identify new goals, and define what you want out of your career. Discover how we have diversified our learning resources and training catalog for you to shape greater opportunities. You care for your career growth, and we do too.

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Corporate Social Responsibility

We care to build an open future for our community and beyond. Discover how our people fuel our Corporate Social Responsibility from the bottom up, embracing but also embodying and promoting values of diversity, equity, and inclusion through everything they do. Together, we strive to build a future that truly includes everyone.

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Great people shape greater opportunities.

At Criteo, we believe great people and reliable products are essential to build an open future for all.
Everything you need to know about our culture, vision, values, and how we live them with people, both in and out of Criteo, is in our Culture Book. Discover who we are, what we do, and how we act as a company and as Criteos!
Our culture
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Meet our Criteos in Armenia!

Welcome to the growing tech hub of Criteo Armenia, located in the heart of Yerevan. There, you'll join a team committed to developing cutting-edge advertising technology and solutions, directly contributing to our company's global success. We created this dynamic hub after acquiring IPONWEB, which already had a strong presence in this region.

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Meet our Criteos in Cyprus!

Whether you prefer the sandy beaches of a coastal city or the cultural dynamism of the capital, we have an office that will suit your needs in Cyprus! Either join our team in Nicosia, the capital of the island and enjoy its rich culture and historical heritage, or try our team in Limassol, where you can enjoy lively nightlife in a uniquely beautiful setting. Are you willing to combine a real-life experience with promising career opportunities? Then we have room for you at Criteo Cyprus.

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The Future is Yours.

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