Senior Backend Engineer | Cybersecurity AI AppSec

<p style="min-height:1.5em"><strong>Location:</strong> Paris (75002) | Hybrid (2 days remote/week)</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About Escape</strong><br />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.</p><p style="min-height:1.5em">We operate at the forefront of technology and research from our Paris office.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About the Role</strong><br />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.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>What You'll Do</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Agentic scanning systems: </strong>Build systems that autonomously explore applications, maintain context, and execute complex testing strategies.</p></li><li><p style="min-height:1.5em"><strong>Security detection engine</strong>: Design and implement reliable, production-grade vulnerability detection logic (injection, auth issues, business logic flaws, etc.).</p></li><li><p style="min-height:1.5em"><strong>AI-driven testing: </strong>Integrate LLMs and structured reasoning into scanning workflows to improve coverage and reduce false positives.</p></li><li><p style="min-height:1.5em"><strong>Distributed infrastructure: </strong>Work on systems that orchestrate thousands of concurrent scans (Kubernetes, queues, resource management).</p></li><li><p style="min-height:1.5em"><strong>Performance &amp; reliability: </strong>Ensure scans are fast, deterministic, and cost-efficient despite high complexity and concurrency.</p></li><li><p style="min-height:1.5em"><strong>Core platform design: </strong>Contribute to architecture decisions around memory systems, execution environments, and data models.</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Our Tech Stack &amp; Focus</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Languages:</strong> Python (primary), Go (performance/network components)</p></li><li><p style="min-height:1.5em"><strong>Runtime:</strong> Containerized workloads on Kubernetes (EKS), supporting long and resource-intensive scans</p></li><li><p style="min-height:1.5em"><strong>Scaling:</strong> Kubernetes Jobs &amp; queue-driven autoscaling</p></li><li><p style="min-height:1.5em"><strong>Web Automation:</strong> Playwright + headless Chromium</p></li><li><p style="min-height:1.5em"><strong>Data:</strong> PostgreSQL, S3-compatible object storage, Redis (limited use)</p></li><li><p style="min-height:1.5em"><strong>Messaging:</strong> Kafka</p></li><li><p style="min-height:1.5em"><strong>Observability:</strong> OpenTelemetry, Grafana Cloud</p></li><li><p style="min-height:1.5em"><strong>CI/CD &amp; Infra:</strong> GitLab CI, Terraform</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Perks &amp; Benefits</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">💸 Significant equity (Stock Options/BSPCE) – become a core stakeholder in Escape’s journey</p></li><li><p style="min-height:1.5em">❤️‍🩹 Top-tier health insurance with Alan</p></li><li><p style="min-height:1.5em">🍕 Meal vouchers with Swile</p></li><li><p style="min-height:1.5em">💪 EGYM Wellpass sport subscription</p></li><li><p style="min-height:1.5em">📚 Continuous learning: budgets for books and online courses</p></li><li><p style="min-height:1.5em">💻 Premium equipment to support your work</p></li><li><p style="min-height:1.5em">🎁 Dedicated time for open-source projects</p></li><li><p style="min-height:1.5em">🌍 Present research at top international conferences (RSAC, BlackHat, DEFCON, BSides, APIDays)</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About You</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">4+ years of experience in backend engineering, security research, or applied R&amp;D in a product environment</p></li><li><p style="min-height:1.5em">Strong software engineering fundamentals and ability to work across domains (systems, networking, web architectures)</p></li><li><p style="min-height:1.5em">Proficient in at least one backend language (Python, Go, or similar)</p></li><li><p style="min-height:1.5em">Experience designing and shipping production systems with measurable impact</p></li><li><p style="min-height:1.5em">Ability to translate complex ideas or research into reliable, scalable implementations</p></li><li><p style="min-height:1.5em">Strong analytical mindset, with a focus on pragmatism and impact</p></li><li><p style="min-height:1.5em">Comfortable collaborating across engineering and security to deliver end-to-end solutions</p></li></ul><p style="min-height:1.5em">Nice to have:</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Experience in application security (web security, pentesting, bug bounty, etc.)</p></li><li><p style="min-height:1.5em">Exposure to AI/LLM-based systems</p></li><li><p style="min-height:1.5em">Familiarity with browser automation or large-scale distributed systems</p></li><li><p style="min-height:1.5em"></p></li></ul><p style="min-height:1.5em">Ready to lead the next wave of AI-powered vulnerability detection? Apply now to join Escape and make a real impact in cybersecurity!</p><p>Find <a href="https://www.arbeitnow.fr">Jobs in France</a> on Arbeitnow</a>