Senior Backend Engineer | Cybersecurity AI AppSec

Location: Paris (75002) | Hybrid (2 days remote/week) About Escape Join Escape, a fast-growing leader in AI-powered cybersecurity. Our mission-driven engineering team (18 engineers, 4 technical leads, 3 product owners) is dedicated to redefining application security with cutting-edge detection and automation. We operate at the forefront of technology and research from our Paris office. About the Role As a Senior Backend Engineer you will work in a team with talented security researchers. You’ll champion innovation, and ensure research translates into impactful production solutions. What You'll Do • Agentic scanning systems: Build systems that autonomously explore applications, maintain context, and execute complex testing strategies. • Security detection engine : Design and implement reliable, production-grade vulnerability detection logic (injection, auth issues, business logic flaws, etc.). • AI-driven testing: Integrate LLMs and structured reasoning into scanning workflows to improve coverage and reduce false positives. • Distributed infrastructure: Work on systems that orchestrate thousands of concurrent scans (Kubernetes, queues, resource management). • Performance & reliability: Ensure scans are fast, deterministic, and cost-efficient despite high complexity and concurrency. • Core platform design: Contribute to architecture decisions around memory systems, execution environments, and data models. Our Tech Stack & Focus • Languages: Python (primary), Go (performance/network components) • Runtime: Containerized workloads on Kubernetes (EKS), supporting long 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 & Benefits • 💸 Significant equity (Stock Options/BSPCE) – become a core stakeholder in Escape’s journey • ❤️‍🩹 Top-tier health insurance with Alan • 🍕 Meal vouchers with Swile • 💪 EGYM Wellpass sport subscription • 📚 Continuous learning: budgets for books and online courses • 💻 Premium equipment to support your work • 🎁 Dedicated time for open-source projects • 🌍 Present research at top international conferences (RSAC, BlackHat, DEFCON, BSides, APIDays) About You • 4+ years of experience in backend engineering, security research, or applied R&D in a product environment • Strong software engineering fundamentals and ability to work across domains (systems, networking, web architectures) • Proficient in at least one backend language (Python, Go, or similar) • Experience designing and shipping production systems with measurable impact • Ability to translate complex ideas or research into reliable, scalable implementations • Strong analytical mindset, with a focus on pragmatism and impact • Comfortable collaborating across engineering and security to deliver end-to-end solutions Nice to have: • Experience in application security (web security, pentesting, bug bounty, etc.) • Exposure to AI/LLM-based systems • Familiarity with browser automation or large-scale distributed systems • Ready to lead the next wave of AI-powered vulnerability detection? Apply now to join Escape and make a real impact in cybersecurity! Find Jobs in France on Arbeitnow