Backend Python Engineer - Cybersecurity Digital & IT · Paris · Hybrid

Backend Python Engineer - Cybersecurity

Come join a dynamic and passionate team in the world of cybersecurity!

About the role

As a Python Back End Developer , you will be responsible for developing the backend of our EDR, which stores, processes, and displays telemetry data collected from the IT infrastructure. The backend plays a central role in the product, requiring daily interaction with frontend, agent, and devops teams as needed.

Responsibilities

• Contributing to the construction and improvement of the product by adding new features, from conceptualization to code implementation.
• Addressing performance issues: the backend must handle and process data from 100,000 machines, so the code must be efficient.
• Ensuring the reliability of the backend, which is installed on-premise at our clients and needs to operate autonomously.
• Contributing to internal tooling to make the development process as seamless as possible.
• Providing input on areas of improvement in the existing codebase; we welcome ideas to identify and address issues during development rather than at the client site.

Technical stack

Python , ElasticSearch , Kafka , and Kubernetes .

Hard Skills

• Degree in engineering, computer science or similar technical field.
• 2 or 3 years experience in Python backend development.
• Familiarity with ElasticSearch, Kafka, or Kubernetes.
• Experience with web development in Django or Flask .
• Mastery of profiling tools for Python (cProfile, memprof, py-spy).
• Comfortable leveraging AI‑powered coding tools to improve development efficiency, code quality, and troubleshooting.

Soft Skills

• Problem solver: strong analytical skills, creative, loves solving complex problems.
• Collaborative Team Player: excel in collaborative environments, valuing teamwork and collective achievement.
• Independent Contributor: thrives in autonomy, takes ownership of projects and tasks, self‑motivated.

Benefits

• Attractive package: base salary + profit sharing.
• Flexible remote work options.
• Mentor for guidance during probationary period.
• Health insurance with Alan.
• Meal vouchers via Swile card and discount platform.
• 7 to 11 additional days off (RTT) per year, plus 25 days of paid vacation.
• GymLib subscription, 80% covered by HarfangLab.
• Access to training and events of choice according to professional needs.