Cryptography Engineer
Sunscreen develops privacy-preserving computing tools based on fully homomorphic encryption (FHE). Its Parasol compiler and Secure Processing Framework help developers build and deploy encrypted applications for on-chain and off-chain use.
Maintainer signals as of 8/12/2026
Funding history
Projects
About Sunscreen
Sunscreen is a cryptography company building developer tools for fully homomorphic encryption. Its Parasol compiler lets engineers write FHE programs in C with annotations for encrypted inputs, while its Secure Processing Framework (SPF) provides supporting capabilities for deploying and using private applications across blockchains and web2 environments, including threshold decryption, off-chain execution, storage, and access-control-oriented infrastructure. The organization targets developers building privacy-preserving applications such as private voting, auctions, trading systems, machine learning, and private data lookups.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will help build the core infrastructure of a new cryptographic system, implement cryptographic primitives such as zero-knowledge proofs and fully homomorphic encryption, and write robust security-first code for adversarial environments. You will study advances in cryptography, evaluate their applicability, collaborate with others, and explain complex technical issues to non-technical audiences.
Requirements
- Significant experience implementing cryptographic primitives
- Experience with efficient zero-knowledge proof systems
- Ability to write performant and modular code
- Comfort working with multiple programming languages
- Interest in learning new mathematics and cryptography
- Excellent communication skills
- Ability to explain complex technical issues to a non-technical audience
- Ability to collaborate with others
Responsibilities
- Build the core infrastructure of a new cryptographic system
- Implement cryptographic primitives including zero-knowledge proofs and fully homomorphic encryption
- Write robust security-first code for high-risk adversarial environments
- Stay current with advances in cryptography
- Determine the applicability of cryptographic advances to the system
- Present work at conferences
Benefits
- Remote-first working environment
- Unlimited paid time off
- Homecomings for in-person team gatherings
- Annual health and wellness budget
- Personal development budget
- Medical, dental, and vision insurance
- 401k plan with employer match
- 1:1 charity donation match
- Opportunity to travel to and present at conferences
- Significant equity