Backend Software Engineer Mid-level (Security Scanners)

Join a focused backend team dedicated to building and scaling the core systems powering our production-grade scanning engine. You'll play a critical role in designing, implementing, and operating robust backend services that execute and orchestrate scanning workloads at scale.

What You'll Do

• Develop, optimize, and maintain backend systems responsible for executing and orchestrating large-scale scanning workloads.
• Enhance the reliability, isolation, and reproducibility of long-running scans.
• Design clean, maintainable abstractions for scanner execution and resource management.
• Optimize distributed workloads for performance and cost efficiency.
• Systematically address flakiness in browser-based and network-intensive scans.
• Partner with Security Research to integrate new detection logic into production systems.
• Contribute to system observability, monitoring, and fast incident resolution in production environments., * Backend Engineering: Design and implement robust backend services with a focus on readability, testability, and maintainability.
• Scalability & Concurrency: Build systems for high-throughput, queue-driven workloads with predictable and scalable performance.
• Execution Platform: Contribute to scheduling, workload isolation, resource governance, queuing/backpressure, and orchestration.
• Production Ownership: Play an active role in monitoring, debugging, performance tuning, and improving production system reliability.
• Cross-Team Collaboration: Work closely with Security Research and Platform teams to integrate detection logic safely and effectively.
• Browser Automation: Utilize Playwright and headless Chromium to instrument browsers, ensuring stability and determinism in web automation tasks.

Our Tech Stack

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

Perks & Benefits

• Significant equity (Stock Options/BSPCE)-become a true stakeholder in our growth
• Top-tier health insurance with Alan
• Meal vouchers (Swile)
• Sports subscription with EGYM Wellpass
• Continuous learning: Access to books and online courses
• Premium equipment to support your best work
• Dedicated time to work on open source projects
• Present your work at top international conferences like RSAC, BSides, BlackHat, DEFCON, and APIDays (across cities including Paris, NYC, SF, London, Berlin, Barcelona)

• 3-5 years of backend engineering experience with a strong foundation in software design and production systems
• Proficient in Python for building reliable and maintainable backend services
• Exposure to distributed systems, job queues, background workers, crawling, or data-processing pipelines
• Solid understanding of reliability, observability, performance, and failure modes in production
• Familiar with concurrency, resource management, and containerized or distributed environments
• Focus on writing clean, testable code and making pragmatic, long-term maintainable decisions
• Bonus: Experience with browser automation (Playwright, Puppeteer, Selenium) or sandboxed execution environments

Escape is a leading AI cybersecurity startup, co-founded by CEO Tristan Kalos and CTO Antoine Carossio. Our Paris-based engineering team (18 engineers, 4 technical leads, 3 product owners) is redefining application security with cutting-edge detection and automation.