Software Engineer – Research Engineer, Backend

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October 3

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XBOW

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Cybersecurity • AI • SaaS

XBOW is an AI-powered penetration testing platform that delivers human-level security testing at machine speed. It utilizes hundreds of specialized AI agents that collaborate to discover, validate, and exploit vulnerabilities autonomously, allowing companies to test their applications rapidly. With a focus on comprehensive coverage and efficiency, XBOW enables continuous security validation for applications, ensuring they remain secure against emerging threats. Its capabilities include testing every endpoint and attack vector, making it a crucial tool for organizations looking to maintain security without the traditional bottlenecks of manual pentesting.

11 - 50 employees

Founded 2024

🔒 Cybersecurity

☁️ SaaS

📋 Description

• Design and build distributed backend systems that scale reliably and securely • Work in TypeScript, Kotlin and Go (and pick them up quickly if you haven’t used them before) • Deploy and operate services in AWS and other cloud providers. • Own problems end-to-end—from design through deployment to production support • Navigate ambiguity and help define *how* we build as much as *what* we build • Collaborate closely with teammates across the stack, including AI researchers, Security researchers and frontend engineers

🎯 Requirements

• Experience building and operating scalable, distributed systems • Comfort working in a fast-moving, early-stage environment • Strong problem-solving skills and the ability to work with incomplete information • Familiarity with AWS or similar cloud platforms • You’re comfortable working with infrastructure as code (e.g., Terraform or CDK) and see infra as part of the engineering system—not something separate from it. • Eager to learn new tools, languages, and technologies as needed • A thoughtful communicator who values clarity and simplicity • Comfort working in a fast-paced, early-stage startup environment • Experience with event-driven architectures, message queues, or async workflows • Experience designing and optimizing relational databases (we use Postgres), and you know how to structure data for both performance and clarity. • Background in systems programming, networking, or performance tuning • Experience with hybrid deployments (cloud + on-prem) and know how to build resilient systems that handle the complexity of mixed environments. • Experience working in an early stage startup • Prior experience building security products or products for technical users

🏖️ Benefits

• Competitive salary and a generous equity package, making you a true owner of the company. • Shape your role, lead the function, and grow with the company as we redefine cybersecurity. • You will tackle technically complex challenges and play a pivotal role in the growth of our business, working alongside an amazing team and some of the world’s experts to shape how AI transforms cybersecurity.