IACR News item: 13 July 2025

Cryptographic Engineer - IOE: Cardano, Japan Based applicants only

Input-Output Global

Job Posting

IOG, is a technology company focused on blockchain research and development. We are renowned for our scientific approach to blockchain development, emphasizing peer-reviewed research and formal methods to ensure security, scalability, and sustainability.

What the role involves:

As a Cryptography Engineer you'll contribute to design, implementation, & integration of secure cryptographic protocols across Cardano-related initiatives, such as Cardano Core Cryptographic Primitives, Mithril, ALBA, Leios etc. This role bridges applied research & engineering, focusing on translating cutting-edge cryptographic designs into robust, production-grade systems. The cryptography engineer will collaborate closely with researchers, protocol designers, architects, product managers, & QA teams to ensure cryptographic correctness, performance, and system alignment.

Work both independently & in collaboration with distributed teams across multiple time zones, showing initiative and ownership over tasks

Design & implement crypto constructions, i.e digital signatures, zero-knowledge proofs, accumulators, commitment schemes

Work independently on software development tasks, demonstrating proactive problem-solving skills.

Develop & maintain cryptographic libraries (primarily in Rust and Haskell, occasionally in C) with an emphasis on safety, performance, clarity, and auditability

Translate cryptographic concepts from academic research into well-structured, reliable implementations that will be used in production systems

Contribute to cryptographic design discussions, parameter tuning, & performance benchmarking, particularly for elliptic curve and zk-based constructions

Analyze & validate protocol security, ensuring soundness, liveness, and resistance to practical adversaries Write and maintain clear documentation, including developer guides and internal design notes

Troubleshoot, debug, and optimize cryptographic code and its interactions with broader systems

While the role is remote, applicants must be located in Japan only

Closing date for applications:

Contact: Marios Nicolaides

More information: https://apply.workable.com/io-global/j/70FC5D8A0C/

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International Association for Cryptologic Research

International Association
for Cryptologic Research