LE
leboncoin

Senior Security Product and Application Engineer (F/N/H)

Location: Paris, France · Category: Engineering & Development · Seniority: Senior · Posted: November 6, 2026 · Verified: Nov 12, 2026

Role Overview & Description

Senior security engineer focusing on product and application security. You will integrate security into the software development lifecycle and ensure applications are secure by design.
Hiring Telemetry · Expansion Signal

Track team expansion and market signals for leboncoin

Polaris7 monitors open roles, strategic market movements, and M&A developments in real time. Get automated intelligence briefings on leboncoin and benchmark against direct competitors.

Source & Transparency: This position was structured directly from the publicly accessible career portal of leboncoin. Details on the employer’s original job posting are authoritative. Polaris7 charges no placement fees and conducts no candidate screening.
Company IntelligenceVerified Profile
LE

leboncoin

leboncoin.fr

French classifieds marketplace for consumers, professionals and advertisers.

Similar Positions in DACH

Related roles across advertising, media, and data

Re-check scheduledPalo Alto, CAEngineering & DevelopmentSenior

This senior role focuses on application security, ensuring the security of software applications throughout the development lifecycle. Responsibilities include conducting security reviews, threat modeling, and implementing security controls. The ideal candidate has strong experience with application security testing, secure coding practices, and common vulnerabilities.

Re-check scheduledSan FranciscoEngineering & DevelopmentSenior

This role focuses on securing Decagon's software applications throughout the development lifecycle. The engineer will conduct security reviews, implement secure coding practices, and integrate security tools into CI/CD pipelines. Requires expertise in application security, penetration testing, and vulnerability management.

Re-check scheduledSão PauloEngineering & DevelopmentSenior

This Senior Security Engineer role is dedicated to offensive security, conducting penetration tests, red team exercises, and security assessments to identify vulnerabilities. The engineer will work to strengthen Nubank's security posture by proactively discovering and mitigating risks across the platform.

Re-check scheduledMulti-Location (8 Locations)Engineering & DevelopmentSenior

This role is responsible for designing and maintaining security infrastructure to protect corporate systems and data. The engineer will implement security controls, monitor threats, and respond to incidents.

More Positions at leboncoin

3 more open roles

Verified todayParis, FranceProduct & DesignMid-Level

The Product Manager for Payment Solutions at leboncoin is responsible for defining and delivering payment features for the marketplace. This role involves close collaboration with engineering and business teams to enhance the payment experience, focusing on user-centric design and seamless integration.

Verified todayParis, FranceEngineering & DevelopmentSenior

As a Senior Cloud Security Engineer, you will design and implement security controls for leboncoin's cloud infrastructure. You will work to protect the platform from threats and ensure compliance.

Verified todayParis, FranceEngineering & DevelopmentMid-Level

As a Product Engineer at leboncoin, you will work on the leading French classifieds platform, contributing to product development and engineering initiatives. The role focuses on building and improving features for the marketplace, collaborating with cross-functional teams.