Backend Engineer (Cybersecurity)

TL;DR

Backend Engineer (Cybersecurity): Building and scaling chat-based cybersecurity training products with an accent on Elixir/Phoenix backend development and AI-first engineering workflows. Focus on designing robust systems for millions of users, optimizing database performance, and pushing the boundaries of AI-assisted development.

Location: Must be based in or willing to relocate to Paris, France

Salary: €45,000–€100,000 per year

Company

Riot Security is a product-first startup building the employee security platform that protects over 2 million employees worldwide through AI-powered training and security tools.

What you will do

• Ship new features for the Awareness product end-to-end.
• Build and maintain robust backend systems serving millions of learners.
• Organize the backend codebase and establish team engineering standards.
• Research, pitch, and prototype solutions to complex technical challenges.
• Utilize AI tools like Claude Code and Codex daily to accelerate development and automation.

Requirements

• Must be based in Paris or willing to relocate.
• 2+ years of professional experience building backend applications.
• Strong proficiency in SQL and relational data modeling.
• Experience or strong interest in AI-first development workflows.
• Ability to prioritize tasks and execute quickly without compromising quality.
• Motivation to solve cybersecurity challenges at scale.

Nice to have

• Experience with Elixir and Phoenix framework.
• Background in Ruby, Python, or Go.

Culture & Benefits

• Work in a modern office in the heart of Paris (République / Canal Saint-Martin).
• Join a financially healthy, capital-efficient startup with clear growth goals.
• Access to top-tier AI tooling budget and mandate to push AI-assisted engineering.
• Collaborative, senior-level team environment.

Hiring process

• Initial call with Talent Acquisition Manager (30 min).
• System design technical interview with Engineering Manager (1h).
• Take-home case study.
• Onsite cultural fit interview (1h30).
• Final fit interview with CTO (30 min).