Senior Backend Engineer - AI-Driven AppSec

Escape Technologies; Paris; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Equity (Stock Options)

Top-tier health insurance

Meal vouchers

Sport subscription

Learning budgets

Premium equipment

Open-source time

Conference talks opportunity

Job summary

Escape Technologies is seeking a Senior Backend Engineer in Paris to join a mission-driven security research team. You will translate cutting-edge detection and automation research into production-grade backend systems, driving innovation and scalable solutions.

You will own the design and implementation of agentic scanning systems, a robust security detection engine, and AI-assisted testing, while coordinating with Kubernetes-based infrastructure.

Qualifications

• 4+ years of 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.

Responsibilities

• 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.

Skills

Backend engineering

Security research

Cross-domain work

Strong fundamentals

Tools

Python

Go

Kubernetes

Playwright

PostgreSQL

Redis

Kafka

OpenTelemetry

Grafana

GitLab CI

Terraform

Job description

Escape Technologies is seeking a Senior Backend Engineer in Paris to join a mission-driven security research team. You will translate cutting-edge detection and automation research into production-grade backend systems, driving innovation and scalable solutions.

You will own the design and implementation of agentic scanning systems, a robust security detection engine, and AI-assisted testing, while coordinating with Kubernetes-based infrastructure.