Senior Software Engineer Engineering Paris Full-time · Permanent

Kleep; Paris; On-site; EUR 70,000 - 110,000; Full time

Job summary

Kleep is building the intelligence layer for fashion e-commerce, with offices in Paris. You will own the product from design to production, deploying across major commerce platforms, and collaborating closely with the CTO to ship and continuously improve a core product for a growing set of brands.

The role focuses on fast iteration, high quality, and strong collaboration within a small, senior international team. CDI, full-time, based in Paris 9th arrondissement.

Qualifications

• 3+ years of software development experience.
• Permanent, full-time CDI contract.
• Based in Paris or willing to relocate to Paris.

Responsibilities

• Deploy product across major platforms (Shopify, Prestashop, Salesforce, Magento and more).
• Integrate new features designed with the product team.
• Own full lifecycle of features: quality, security and performance included.
• Coordinate and guide development with external partners to foster high performance and collaboration.

Skills

Fast learner

Curiosity

Team player

Autonomy

Entrepreneurial mindset

Tools

TypeScript

React

Node.js

Python

AWS

Git

Jira

Shopify

SFCC

Prestashop

Kotlin

Swift

Job description

Own Kleep's product from first design to production deployment, working directly with the CTO on the very core of the company.

You will build Kleep's product end to end, from first design through to production deployment, working directly with the CTO to imagine, ship and continuously improve the core of the company.

Our approach is deliberately different from the rest of the market, with one ambition: to lead computer-vision applications for e-commerce, globally. This role is where that ambition becomes shipped product.

The stack

You do not need to know all of it on day one.

• Front-end: TypeScript, React
• Back-end: Node.js, Python
• Cloud: AWS
• Tooling: Git, Jira
• A plus: the major commerce platforms (Shopify, SFCC, Prestashop)
• Also a plus: Kotlin or Swift

What you will do

• Deploy our product across every major commerce platform, Shopify, Prestashop, Salesforce, Magento and beyond
• Integrate new features designed with the product team
• Own the full lifecycle of features: quality, security and performance included
• Coordinate and guide development with external partners, setting a culture of high performance and collaboration

Who you are

• Passionate about technology, curiosity is one of your defining strengths, and complex problems are what you enjoy
• A fast learner who quickly identifies and acquires whatever skill the goal requires
• High energy, high intellectual horsepower
• Eager to take a leading role in an ambitious entrepreneurial venture
• A strong team player who operates with real autonomy
• 3+ years of experience
• Start date: as soon as possible (flexible)
• Contract: permanent, full-time (CDI)
• Location: Paris (9th arrondissement)

Why Kleep

Kleep builds the intelligence layer for fashion e-commerce: sizing, discovery and AI imagery that 300+ brands run in production, Givenchy, Lacoste and Victoria Beckham among them. Every product is proven in live A/B tests, not in decks.

We are a small, senior, international team with offices in Paris (9th arrondissement) and, since January 2026, New York. The company is led by its founders: Federico (CEO, previously in venture capital and private equity) and Théophile (CTO, an ENS and Mines Paris engineer who worked in trading and quantitative research at Morgan Stanley and BNP Paribas).

Ownership here is real: ideas are heard, feedback flows both ways, and impact is tangible from day one. We hold a high bar, celebrate together, weekly team drinks, monthly events, annual off-sites, and stay serious about the work, never about ourselves.