Backend Software Engineer, SandboxAQ

Key Management System

Salary not provided

Linux

C++

Rust

Junior, Mid and Senior level

Remote from US

AI & quantum computing solutions

Job no longer available

AI & quantum computing solutions

201-500 employees

B2BArtificial IntelligenceSecurityEnterpriseDeep TechSaaSCyber SecurityScience

Job no longer available

Salary not provided

Linux

C++

Rust

Junior, Mid and Senior level

Remote from US

201-500 employees

B2BArtificial IntelligenceSecurityEnterpriseDeep TechSaaSCyber SecurityScience

Company mission

To help address some of the world's most challenging problems through AI and Quantum technology.

Job

Company

Role

Who you are

U.S. Citizenship is required due to USG contract requirements
Ability to timely obtain and maintain a U.S. security clearance
Competency with C/C++ and Go
Expertise building enterprise Key Management Systems, familiarity with the PKCS#11 interface and knowledge of X.509 certificates
Understanding of network infrastructure fundamentals and network operations
Understanding of security and privacy technologies, including encryption, authentication protocols, identity and access management systems, etc
Ability to work in a small team / rapid prototyping environment and deal with uncertainty and fluidity

Desirable

Active TS with SCI eligibility within the last 2 years
Familiarity with the Rust language
Familiarity with Post-Quantum Cryptography
Competence with optimization of networks / large systems, especially with ML
Expertise designing and deploying large-scale distributed systems
Experience with embedded Linux network devices

What the job involves

Designing and developing a Key Management System leveraging open source and proprietary frameworks
Implementing related cryptographic APIs
Contribute to the design of (asynchronous) networking-oriented APIs
Provide guidance on software development scope, capacity, prioritization and best practices

Our take

Spun out from Alphabet in 2022, SandboxAQ is a company providing AI and quantum computing solutions. Using cybersecurity modules that are in line with the "third quantum revolution", SandboxAQ can migrate enterprises to a higher level of security through the use of this cutting-edge technology.

The company's approach enables cross-pollination in a range of fields including physics, neuroscience, cryptography and more. Examples of its products are an end-to-end crypto-agile security suite, and quantum sensing solutions. Impressively, SandboxAQ has already partnered with Deloitte and Ernst & Young, as well as the US Air Force, to bring its quantum tech to the market.

Looking forward, SandboxAQ plans to build further relationships across the public sector, to help situate the company as one of the most "battle-tested" quantum providers on the market. The company has raised significant funds that will accelerate further product development, and in 2025 began partnering with the Department of War CIO to accelerate the discovery and inventory of cryptographic assets within the DoW's environment.

Steph

Company Specialist at Welcome to the Jungle

Company

Funding (last 2 of 5 rounds)

Jul 2025

$95m

LATE VC

Apr 2025

$150m

SERIES E

Total funding: $1.1bn

Company benefits

Stock options
Unlimated vacation (PTO) and flexible work culture
Company-wide winter and summer breaks to unwind
Best-in-class health plans: Medical, dental and orthodontics, and vision
Family planning and fertility benefits
Military leave
100% paid parental leave
401k with company matching
Education stipends
Financial wellness resources

Company HQ

Palo Alto, CA

Leadership

Jack Hindary

(CEO)

Serial entrepreneur and Co-Founder of several tech companies. Also the author of 'Quantum Computing: An Applied Approach', one of the leading textbooks used in the field.

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