Senior Platform Security Engineer

About Us

Quantum Gate is dedicated to developing and commercializing cutting‑edge post‑quantum cryptographic solutions. Our mission is to safeguard enterprise digital environments through innovative protocols and applications that address the evolving challenges of the post‑quantum era.

We are looking for a versatile engineer who can work across multiple domains of our complex project while maintaining strong security practices. You'll develop in different languages and layers—from system services to infrastructure—and ensure security is baked into everything.

• Develop across multiple areas: C/C++, Java, Golang—using the right tool for the job
• Own security implementation: design secure components, implement cryptographic solutions, conduct threat assessments, manage vulnerability patching
• Build system modifications and toolchain work
• System framework and service development
• Security updates and patch integration

• Infrastructure and Dev Ops focused work
• Linux system hardening
• Drive security culture: implement best practices, code reviews, vulnerability management
• Automate and script for builds, testing, deployments

• Multi‑language capability: strong in at least one of C/C++, Java, Golang and willing to learn others.
• Security mindset: understanding of cryptography, threat modeling, vulnerability management
• Linux fundamentals and scripting/Dev Ops experience
• Versatility & ownership: comfortable context‑switching across different project areas and driving decisions independently