Senior Software Development Engineer

Criteo Deutschland; Paris; Hybrid; EUR 110,000 - 150,000; Full time

Benefits offered by this job

Hybrid work model

Learning & career development

Health benefits

Diversity & inclusion

Equity potential

Job summary

Criteo is seeking a Senior Software Development Engineer in Paris, France, offering a permanent full-time position with a hybrid work model. You will design, build, and operate scalable backend services, focusing on identity signals, data processing, and high-performance APIs.

You will collaborate with product managers, data scientists, ML engineers, and cross-functional teams across User Data and Audience platforms, contributing to privacy-conscious identity solutions in a dynamic advertising

Qualifications

• 5+ years of experience developing and extending large and complex systems.
• Master in Computer Science or engineering school.
• Proficient in C#, Python, C++, and Java.
• Fluent in English.

Responsibilities

• Design, build, and operate highly scalable backend services processing billions of identity signals.
• Develop services to create, store, enrich, synchronize, validate, and serve identity data across Criteo's ecosystem.
• Improve cross-device and cross-environment matching to increase audience reach and advertising performance.
• Work on large-scale data processing, distributed systems, low-latency services, and high-throughput APIs.
• Partner with product managers, data scientists, ML engineers, and other engineering teams.
• Own services end-to-end from design to deployment, monitoring, troubleshooting, and continuous improvement.

Skills

5+ years experience building large/复杂?

Fluent English

Collaborative mindset

Education

Master's degree in Computer Science or Engineering

Tools

C#

Python

C++

Java

Job description

Senior Software Development Engineer

Paris, France

Permanent - Full Time

What You'll Do:

• Design, build, and operate highly scalable backend services that process billions of identity signals.
• Develop services that create, store, enrich, synchronize, validate, and serve identity data across Criteo's ecosystem.
• Improve cross-device and cross-environment matching capabilities to increase audience reach and advertising performance.
• Work on large-scale data processing, distributed systems, low-latency services, and high-throughput APIs.
• Partner closely with product managers, data scientists, machine learning engineers, and other engineering teams across User Data and Audience platforms.
• Contribute to the evolution of privacy-conscious identity solutions in a rapidly changing advertising ecosystem.
• Own services end-to-end, from design and implementation through deployment, monitoring, troubleshooting, and continuous improvement.

Who You Are:

• You have at least 5 years of experience with developing and extending large and complex systems.
• Master in Computer science or engineering school or any relevant field
• Familiar with this technical stack: C#, Python, C++, Java
• You are curious about innovative technologies, eventually leading personal subjects on the matter.
• A can do attitude and the ability to work on problems by thinking positively and in a collaborative manner.
• You worked in Agile environments and you are passionate about shipping high quality code!
• Fluent in English

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!

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.
• 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.
• 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.
• Great people
• 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
• Meet our Criteos in France!
• Criteo came to spring off of a few great minds, back in 2005. From the start‑up incubator to the global company we are now, Criteo has grown, standing now for 37 offices and further coworking spaces across the globe. In France, we welcome around 1,000 Criteos in our two spacious and collaborative hubs of Paris and Grenoble.

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.