Backend Software Engineer (AI Native)

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.

What you'll do

• 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.

What you'll need

• 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 have

• Experience with cryptography, security, or networking systems.

• Experience with high-reliability or performance-sensitive services.

• Familiarity with Linux systems programming and packaging/deployment.

Benefits & Perks

• 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!