Software Engineer Intern - Front-End or Fullstack

Criteo; Paris; Sur place; EUR 30 000 - 40 000; Plein temps

Résumé du poste

A leading technology company in Paris is seeking a Software Engineer Intern. The intern will design and implement components for web applications and participate in multi-disciplinary teams. Candidates should be in their final year of Software Engineering studies and be experienced in web development using languages such as .NET, C#, and TypeScript. This position offers competitive pay and a collaborative working environment.

Prestations

Health benefits

Learning and mentorship programs

Flexible work style

Diverse and inclusive team

Qualifications

• Experience in developing web-based applications.
• Participated in coding competitions.
• Strong sense of ownership and creative problem-solving.

Responsabilités

• Design and implement improvements for performance/monitoring.
• Help API developers to visualize external APIs.
• Participate in product, UX, and R&D teams for feature development.

Connaissances

Object-Oriented Programming

.NET

C#

TypeScript

JavaScript

Angular

GraphSQL

Formation

Final year of study in Software Engineering or related field

Description du poste

Software Engineer Intern - Front-End or Fullstack

What if, in your next adventure, you were surrounded by people who, like you, look for an unlimited playground to explore, share, and test? Would you care to hear more? You've opened the right door! As an R&D team, making sure your ideas are heard and encouraged is what we strive to do!

What You Will Do:

• Front-end:
  • Design and implement a component in a web application that improves the performance/monitoring (loading time) of the Shell and satellite applications in CGrowth.
  • Help API developers (EXAM developer, API Guild APIDX Team) to visualize the external Criteo API to improve its consistency.
• Full Stack:
  • Participate in building the specification with product, UX, and R&D teams. Fully handle the development of the feature with support of the rest of the team and follow it up to progressive roll‑out in production. A topic could be a new way of segmenting users from the API (internal and external) to the UI.
  • MasterTag request production and parsing – technical stack includes TypeScript/JavaScript, C# (.NET Framework, .NET Core) and Mesos.

In a team of 7–10, you will work 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. You are encouraged to actively voice your ideas while learning how to build and ship quality code into production, which will likely affect millions of users instantly.

What is it like to work in our R&D:

• Most of all, we are creators. From designing ground‑breaking products to finding unique ways to solve technical challenges at an exceptional scale, our tech teams work with state‑of‑the‑art methodologies to shape the future of advertising.
• The Product Engineering team builds the products that make Criteo tick: from developing industry‑leading machine learning techniques, building high‑scale/low‑latency real‑time applications (over 5M QPS, handling over 300 Bn HTTP requests daily), to delivering first‑class client interfaces, both API and UI, with forward‑thinking UX at their core, all using state‑of‑the‑art technology.

Would like to know more about our internships? Take a look to our website here!

Who You Are:

• You are in your final year of study in Software Engineering or a related field.
• You have experience in developing web‑based applications and occasionally participate in coding competitions.
• You are experienced in Object‑Oriented Programming and at least one of the following languages: .NET, C#, TypeScript, Angular, JavaScript, GraphSQL.
• You have a strong sense of ownership and a dislike for passing the buck.
• You are a problem solver, a fixer, and a creative technologist. We believe coding is a talent and a passion, not just a skill.
• You are a strong communicator and a team player who can work efficiently with others.
• You are 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!

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:

• 🏠 Own your work style – Build your work around your life and not the other way around.
• 📈 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 – Competitive salary, equity, performance‑based rewards and family‑friendly policies.

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