Backend Software Engineer (AI Native)

Qrypt • Austin, TX

1d • Onsite

About The Position

Qrypt's mission is to protect the world's data and restore privacy. Qrypt hardens cybersecurity and future-proofs encryption against quantum attacks by eliminating key transmission. Qrypt's unique technology independently generates symmetric keys at multiple endpoints for critical workflows today. We are a passionate team of engineers, physicists, and cryptographers committed to transforming the way the world safeguards data and communications! Qrypt is looking for a Backend Software Engineer to build the services behind our quantum security products. You will write and ship backend software — primarily in Rust — that moves quantum entropy and keys, powers our entropy-as-a-service platform, and makes our appliances work reliably at scale. You will use AI-assisted development tooling as a core part of how you work, while owning the correctness and quality of everything you ship.

Requirements

• Bachelor's degree in Computer Science or a related technical field, and/or relevant work experience.
• 3+ years building and shipping backend software.
• Proficiency in Rust, or strong systems-programming experience (C, C++, Go) with a demonstrated ability and eagerness to work primarily in Rust.
• Working familiarity with C++ and Python.
• Solid grasp of backend fundamentals: APIs, services, concurrency, testing, and Linux.
• Fluency with AI and agent-assisted development, and the judgment to apply it where it adds real leverage — reviewing, correcting, and taking full ownership of AI-generated work.
• Strong written and verbal communication skills.
• Must be authorized to work in the United States. Qrypt does not provide visa sponsorship for this role.

Nice To Haves

• Experience with cryptography, security, or networking systems.
• Experience with high-reliability or performance-sensitive services.
• Familiarity with Linux systems programming and packaging/deployment.

Responsibilities

• Design, build, and test backend services and APIs, primarily in Rust, with some C++ and Python.
• Work on the software that delivers quantum entropy and keys reliably and securely.
• Write well-tested, maintainable code and participate in design and code review.
• Use AI-assisted and agentic development tooling to accelerate your work while owning the correctness and quality of everything you ship.
• Help shape how the team adopts AI-assisted development (instruction conventions, review standards) as the tooling matures.
• Develop an understanding of the domain (quantum random number generation, cryptography, network security) to build and validate our products.
• Collaborate with hardware, product, and other engineers to ship end-to-end.

Benefits

• Competitive Pay & Equity participation
• Comprehensive health, dental and vision coverage
• 401(k) match
• In-office lunch and snacks
• The opportunity to be part of a company solving one of the most critical technology challenges of our time!

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level