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Kleep AI

Software Engineer - Internship / Apprenticeship

On site

Paris, France

Full Time

06-01-2026

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Skills

Python TypeScript PostgreSQL Monitoring Architecture Computer Vision node.js Front-end Development AWS React.js GCP E-commerce

Job Specifications

We’re a product-first scale-up on a mission to transform the e-commerce experience with AI.

Kleep AI is an AI-powered SaaS helping fashion brands make their e-commerce more personalized, more efficient, and more profitable. Our solutions leverage advanced AI and Computer Vision to improve product discovery, performance, and user experience while supporting a more sustainable e-commerce model.

Founded in 2021 by two data scientists, Kleep AI has raised €2.5M and is now trusted by 150 international fashion brands, including Lacoste, Kenzo, Givenchy, The Kooples, Showroomprivé, Intersport, Victoria Beckham, Soeur, and more.

Fashion e-commerce is evolving fast, and brands need cutting-edge technology to stay ahead. We are building innovative, scalable products to become a global leader in AI-powered retail solutions, and we’re just getting started.

About the role

You will join the Tech team as a Full-stack Software Engineer Intern / Apprentice.

You will work closely with the CTO and the product team on the development of Kleep AI’s core products, from design to deployment. Your work will directly contribute to building robust, scalable, and high-performance solutions used by leading international brands.

This role offers a unique opportunity to combine technical depth, product impact, and real-world scalability challenges in a fast-growing AI scale-up.

What you will do

Backend

Work with large volumes of data with a strong focus on performance, scalability, and reliability.
Maintain and improve Kleep AI’s APIs across multiple products, ensuring high availability.
Design and implement processes to automate and improve internal services (data processing, backups, monitoring).
Contribute to infrastructure and cloud-based systems (AWS, GCP).

Front-end Development

Design and build complex front-end features with high performance and quality standards.
Transform designs into production-ready components.
Collaborate closely with product and design teams to deliver smooth user experiences.

Collaboration & Product Impact

Work in close collaboration with the CTO and engineering team.
Contribute ideas to improve architecture, performance, and developer experience.
Take part in technical decisions that shape the future of Kleep AI’s products.

Tech stack

Knowledge of all technologies is not required.

Front-end: TypeScript, React.js
Back-end: TypeScript / Node.js, Python, PostgreSQL
Infrastructure: AWS, GCP

Who you are

You are passionate about software engineering and eager to learn.

You enjoy solving complex technical problems in a fast-paced environment.

You are curious, humble, and have a strong sense of ownership.

You can work autonomously while thriving in a collaborative team.

You are interested in building impactful products in an AI-driven SaaS environment.

Previous professional or internship experience is a plus.

Education: Bachelor / Master level (M1 / M2 equivalent)

Why join Kleep AI

Immediate impact: Your code will be used by major international fashion brands.

Fast-moving environment: Learn quickly in a technically demanding scale-up.

Supportive team: Join a collaborative and ambitious engineering culture.

Growth opportunities: Strong learning curve, close mentorship, and real ownership.

Practical information

Start date: As soon as possible (flexible)

Contract: Internship / Apprenticeship

Location: Paris

About the Company

Founded in 2021 by two data scientists, Kleep AI is a fast-growing scale-up transforming the e-commerce industry with AI solutions. Our mission is to make e-commerce more personalized, more efficient, more profitable, and more sustainable for both brands and consumers. We raised €2.5 million and our technology is used by 150 international brands, including Lacoste, Kenzo, Givenchy, The Kooples, Showroomprivé, Intersport, Victoria Beckham, Soeur, and more. Kleep AI offers AI-powered sizing and fit recommendations that help on... Know more