Senior Fullstack Software Engineer
Confirmed on the employer's own hiring board on Oct 11, 2026. First seen by Alion on Sep 29, 2026. Criteo scores B on the Alion truth index.
What You'll Do:
CRITEO is looking for Fullstack Software Engineers to join our amazing Product Engineering team in Bucharest!
Are you passionate about building applications that make life easier for developers and end-users alike? At Criteo, we’re looking for someone who thrives in collaborative environments, loves solving complex problems, and is excited about shaping the future of APIs.
Your main responsibilities :
Partner with Product teams, R&D colleagues, and our API Guild to design APIs that truly make an impact.
Collaborate with UI/UX experts to create user-friendly, accessible interfaces.
Implement and test applications with unit, integration, and end-to-end testing to ensure reliability.
Review code with your teammates to maintain high standards and long-lasting quality.
Work closely with multicultural R&D teams to connect client-facing applications with the rest of Criteo’s systems.
Continuously deploy applications, keeping our systems agile and responsive.
Bring fresh ideas from meetups and conferences to strengthen our frameworks, libraries, and best practices in testing and CI/CD.
Our current tech stack includes C#/ASP.NET Core on the back end and Angular on the front end
Who You Are:
- You believe APIs are the backbone of modern technology.
- You care deeply about Developer Experience and want your work to empower other developers.
- You have at least 7 years of experience working on large, complex systems.
- You’re skilled in Object-Oriented Programming (C#, Python, C++, Java) and/or front-end development with JavaScript, Angular, or React.
- You love reusability and enjoy making complex things simple.
- You’re curious about new technologies and may even explore them through personal projects.
- You bring a positive, collaborative mindset and a “can-do” attitude to challenges.
- You thrive in Agile environments and are passionate about delivering high-quality code.
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.
Additionalbenefits may vary depending on the country where you work and the nature of your employment with Criteo.