Backend Software Engineer (AI Native)

Qrypt; Austin (TX); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Competitive pay

Equity participation

Health, dental, and vision coverage

401(k) match

In-office lunch and snacks

Job summary

Qrypt seeks 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 scales reliably across appliances.

You will use AI-assisted tooling while owning the correctness and quality of everything you ship, collaborating with hardware, product, and other engineers to deliver end-to-end solutions.

Qualifications

• Bachelor's degree in Computer Science or related field or equivalent work experience.
• 3+ years building and shipping backend software.
• Proficiency in Rust or strong systems programming in C/C++/Go with Rust focus.
• Working familiarity with C++ and Python.
• Strong knowledge of APIs, services, concurrency, testing, and Linux.
• Excellent written and verbal communication skills.
• Authorized to work in the United States; visa sponsorship not provided.

Responsibilities

• Design, build, and test backend services and APIs, primarily in Rust, with some C++ and Python.
• Work on software that delivers quantum entropy and keys reliably and securely.
• Write well-tested, maintainable code and participate in design and code reviews.
• Use AI-assisted and agentic development tooling to accelerate work while owning correctness and quality.
• Help shape team adoption of AI-assisted development tooling and standards.
• Understand the domain to build and validate products, collaborating across hardware and product teams.

Skills

Rust

C/C++

Python

APIs

Linux

Concurrency

Education

Bachelor's degree in Computer Science or related field

Tools

C++

Python

Go

Job description

Qrypt'smission is to protect the world's data and restore privacy.Qrypthardens cybersecurity and future-proofsencryption against quantum attacks byeliminatingkey transmission.Qrypt'sunique 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!

Qryptis 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 andparticipatein 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 andvalidateour products.
• Collaborate with hardware, product, and other engineers to ship end-to-end.

What you'll need

• Bachelor's degree in Computer Scienceor a related technical field, and/or relevant work experience.
• 3+ years building and shipping backend software.
• Proficiencyin 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.
• Mustbe authorized towork in the United States.Qryptdoes 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!

Equal Opportunity Employer

Qryptis committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, disability, age, or veteran status.If you have a disability and need assistance with our employment application process, please email us at [e-mail] to obtain assistance.