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PhD Residency - Cryptography Software Engineer - SandboxAQ

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PhD Residency - Cryptography Software Engineer
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Job Description

Ready to join the AQ era?

SandboxAQ is solving challenging problems with AI + Quantum for positive impact. We partner with global leaders in government, academia, and the private sector to identify applications that would benefit from quantum-based applications to current and future commercial challenges. We engage with customers early and throughout the development process to improve market fit.

Our team’s unique approach enables cross-pollination across a diverse range of fields, from physics, computer science, neuroscience, mathematics, cryptography, natural sciences and more! Our success comes from coalescing diverse talent to create an environment where experimental thinking and collaboration yield breakthrough AI + Quantum solutions. Join a culture where thought leadership, diverse talent, employee engagement, and technological impact will create the next tech uproar.

We are deeply committed to education as a means to advance quantum solutions and computing initiatives. We invest in future talent through internship programs, research papers, developer tools, textbooks, educational talks/events and partnerships with universities/talent hubs to attract multi-disciplinary talent. Our hope is to inspire people from all walks of life to be prepared for the quantum era and encourage a path in STEM.

Residencies at SandboxAQ

If you’re a graduate student in STEM ready to bring the new AI + Quantum era to the world, consider joining our residency program at SandboxAQ.

We are currently looking for PhD students in a wide variety of STEM fields — physics, computer science, AI, neuroscience, chemistry, cryptography, mathematics/statistics, biomedical engineering, aerospace engineering, geophysics, and more — to join our world-class team of engineers, scientists and technologists.

PhD Residency - Cryptography Software Engineer

The Sandbox team is looking for a software engineer to help functionalize the next generation of cryptographic systems. A successful candidate will be comfortable with user space Linux development, network engineering, cryptographic algorithms and secure protocols. They will be part of a diverse team consisting of cryptographers, mathematicians, ML experts, and physicists, where they will play a key role in efficient and effective enablement of the technologies being developed. 

Core Responsibilities:

  • Use open source and custom tools to enable and validate novel cryptographic systems
  • Build prototypes to evaluate feasibility
  • Perform network and Linux host profiling, identify potential performance tradeoffs

Minimum Qualifications:

  • Competency with C/C++ on Linux hosts
  • Understanding of network infrastructure fundamentals and secure communication protocols such as OpenSSL, VPN, TLS, IPSec (strongSwan) or WireGuard
  • Experience doing basic Linux host and network performance analysis and debugging 
  • Ability to work in a small team / rapid prototyping environment and deal with uncertainty and fluidity

Preferred Qualifications:

  • Familiarity with Post-Quantum Cryptography
  • Experience with Rust or Golang
  • Core knowledge and experience modifying / extending network cryptographic systems (e.g. OpenSSL, OpenVPN, strongSwan, WireGuard)
  • Ability to port Linux network applications to Android with native build


  • Location: Remote in North America or Europe
  • Start date: Year-round, on a rolling basis
  • Duration: Flexible, typically between 4 months to one year
  • Eligibility
    • Currently enrolled in a PhD program on math, computer science, or related field. **Non-PhD post-graduate students may be considered on a case-by-case basis as Master Interns (e.g. MD, Masters)
    • Proficiency with at least one programming language (Python, C/C++, Matlab, etc.)
  • For questions, email

What to Expect:

  • Work on a technical project with scientists and engineers on one of our core teams
  • Engagement with fellow residents
  • Competitive compensation
  • Present findings to the rest of Sandbox AQ
  • Have fun!

SandboxAQ welcomes all.

We are committed to creating an inclusive culture where we have zero tolerance for discrimination. We invest in our employees' personal and professional growth. Once you work with us, you can’t go back to normalcy because great breakthroughs come from great teams and we are the best in quantum technology.
We offer competitive salaries, stock options depending on employment type, generous learning opportunities, medical/dental/vision, family planning/fertility, PTO (summer and winter breaks), financial wellness resources, 401(k) plans, and more. 
Equal Employment Opportunity: All qualified applicants will receive consideration regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.
Accommodations: we provide reasonable accommodations for individuals with disabilities in job application procedures for open roles. If you need such an accommodation.

SandboxAQ Headquarters Location

Palo Alto, CA

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SandboxAQ Company Size

Between 100 - 500 employees

SandboxAQ Founded Year


SandboxAQ Total Amount Raised


SandboxAQ Funding Rounds

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  • Series Unknown

    $500,000,000 USD