Backend Software Engineer

We’re looking for an experienced backend engineer to help build and scale the next generation of AI-driven cybersecurity platforms at Theori. You’ll play a key role in architecting and implementing core backend systems that power Xint, our autonomous penetration testing framework.

This is a foundational role in our NA engineering team—ideal for someone who thrives on solving complex systems challenges, enjoys designing for scale and reliability, and wants to help define engineering excellence in a fast-growing, AI-first company.

Key Responsibilities

• Architect, develop, and maintain backend services and APIs that power Theori’s AI security platforms.

• Design for performance, scalability, and fault-tolerance across distributed systems.

• Collaborate with product and frontend engineers to define and deliver secure, well-structured APIs.

• Build and optimize data pipelines supporting LLM agent workflows and real-time scanning.

• Establish backend best practices, coding standards, and CI/CD processes for a growing US team.