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Sr Applied Scientist, Amazon Cryptographic Libraries

Seattle, Washington, United States💼 Full-time💰 $167,100–$226,100🗓 2026-08-31 → 2026-09-25

Core

Building machine-checked proofs to ensure the correctness of cryptographic implementations for AWS services and open-source libraries.

Role type

Senior Applied Scientist (Formal Verification & Cryptography)

Builds

FIPS-validated cryptographic libraries (AWS-LC) and post-quantum cryptography algorithms

Domain

Cybersecurity, Cryptography, Formal Methods

Deliverable

production ML models | product features | infrastructure

Required skills

Mathematical logic, formal verification, satisfiability solving (SAT/SMT), mechanical theorem proving, model checking, program analysis

Preferred skills

Interactive program verification tools (HOL Light, CBMC, Verus, Lean), low-level software specification, cryptographic primitives, systems programming (Rust, C, assembly), post-quantum cryptography

Technologies

HOL-Light, Verus, CBMC, Rust, C, assembly, AWS-LC

Responsibilities

Develop and maintain machine-checked proofs of correctness for cryptographic implementations; Specify functional behavior of low-level code in formal notation; Apply formal methods and rigorous testing to security-critical codebases; Contribute to implementation and optimization of cryptographic algorithms including post-quantum schemes; Publish patents and peer-reviewed articles; Mentor individuals and the community on advanced technical issues

Seniority

Senior, hands-on IC with mentorship responsibilities

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