Backend Software Engineer Mid-level (Security Scanners)

Escape; Paris; Sur place; EUR 45 000 - 65 000; Plein temps

Avantages offerts par ce poste

Significant equity (Stock Options/BSCPE)

Top-tier health insurance

Meal vouchers

Sport subscription

Access to books and online courses

Top-tier equipment

Free time for Open Source Projects

Opportunities to present at conferences

Résumé du poste

A leading AI Cybersecurity Startup in Paris is looking for a Mid-level Backend Software Engineer to enhance their security scanning platform. In this role, you will design, implement, and maintain scalable backend systems while ensuring high performance and reliability. Collaborating closely with Security Research and working with technologies like Python, Go, and Kubernetes, you will contribute to the development of innovative solutions that detect real-world vulnerabilities. The position offers significant equity and top-tier health insurance, among other perks.

Qualifications

• Experience with designing and implementing production-grade backend services.
• Proficiency in Python and Go for backend development.
• Knowledge in Kubernetes for scaling applications.

Responsabilités

• Design and implement backend systems that execute and orchestrate scanning workloads.
• Ensure system reliability and performance in production.
• Collaborate with Security Research for integrated detection logic.

Connaissances

Backend Engineering

Python

Go

Kubernetes

Web automation

Observability

Outils

PostgreSQL

Redis

Kafka

OpenTelemetry

GitLab CI

Terraform

Description du poste

Overview

At Escape, we build an automated security scanning platform that analyzes real customer applications at scale and surfaces high-signal, real-world vulnerabilities. The challenge is not “run a scanner once.” It’s running millions of reliable, isolated, cost-efficient analysis tasks across widely different application behaviors while keeping results accurate and production-grade. We are looking for a Mid-level Backend Software Engineer to join the Security Scanners team.

You will work on the core systems that execute, scale, and operate our scanning workloads in production. You’ll collaborate closely with Security Research, who design detection logic, and turn that into robust, maintainable, high-performance software.

Context

• Location: Paris (75002), 2 days remote/week

• Company: Escape – Leading AI Cybersecurity Startup

• Cofounders: CEO Tristan Kalos and CTO Antoine Carossio

• Engineering Team: 13 Engineers, 4 Technical Leads, 1 Product Owner

• You will join a focused backend team working on scanner execution and orchestration

What you will do

You will contribute directly to the design, implementation, and operation of the systems that power our scanning engine in production. You will be expected to:

• Build and evolve backend systems that execute and orchestrate scanning workloads at scale
• Improve reliability, isolation, and reproducibility of long-running scans
• Design clean, maintainable abstractions around scanner execution and resource management
• Optimize performance and cost efficiency of distributed workloads
• Systematically reduce flakiness in browser-based and network-heavy scans
• Partner with Security Research to integrate detection logic into production-ready components
• Contribute to observability, monitoring, and incident resolution in production

Key Responsibilities

• Backend Engineering: Design and implement production-grade backend services with strong attention to readability, testability, and maintainability.
• Scalability & Concurrency: Build systems that handle high-throughput, queue-driven workloads with predictable performance.
• Execution Platform: Contribute to scheduling, isolation, resource governance, queueing/backpressure, and workload orchestration.
• Production Ownership: Participate in monitoring, debugging, performance tuning, and continuous improvement of reliability in production.
• Cross-Team Collaboration: Work closely with Security Research and Platform teams to ensure new detection logic integrates safely and cleanly.
• Browser Automation: Work with Playwright and headless Chromium to instrument browsers and improve stability and determinism of web automation tasks.

Tech Stack

• Languages: Python (primary), Go (performance/network-heavy components)
• Runtime: containerized workloads on Kubernetes (EKS), long-running and resource-intensive scans
• Scaling: Kubernetes Jobs + queue-driven autoscaling
• Web automation: Playwright + headless Chromium
• Data: PostgreSQL, S3-compatible object storage, Redis (limited use)
• Messaging: Kafka
• Observability: OpenTelemetry + Grafana Cloud
• CI/CD & Infra: GitLab CI, Terraform

Perks

• Significant equity (Stock Options/BSCPE), making you a true stakeholder in our success.
• Top-tier health insurance with Alan
• Meal vouchers with Swile
• Sport subscription with EGYM Wellpass (ex Gymlib)
• A place to learn and grow: Access to books and online courses to help you excel in your role
• Top-tier equipment to do your best work
• Free time to work on cool Open Source Projects.
• Opportunities to present research and engineering work at international conferences like RSAC, BSides, BlackHat, DEFCON, APIDays (New York, Las Vegas, San Francisco, London, Paris, Berlin, Barcelona)

We respect your time and will make it quick and efficient. The entire process will be completed within 1 week.

1 meeting with HR - 30 minutes

1 Coding challenge - 1 hour

1 System Design with the Technical Lead - 1 hour

1 Technical Deep Dive interview the CTO - 30 minutes

1 Impact & Ownership interview with the CEO - 30 minutes

Formal hiring proposal.