Cryptographic Engineer, Bitcoin DeFi

Job not on LinkedIn

September 30

Apply Now

Receive Emails with Similar Jobs

Input Output (IOHK)

WebsiteLinkedInAll Job Openings

Crypto • Web 3

Input Output (IOHK) is a technology company focused on research and development in the field of blockchain and cryptocurrencies. It is known for its key role in developing the Cardano blockchain platform, which aims to offer a more secure and scalable environment for digital transactions and smart contracts. IOHK places a strong emphasis on academic research and peer-reviewed development methods, contributing to its reputation in the blockchain space.

201 - 500 employees

Founded 2015

₿ Crypto

🌐 Web 3

📋 Description

• Contribute to the design, implementation, and integration of secure cryptographic protocols and primitives across diverse projects. • Turn advanced cryptographic designs into robust, production-ready systems at the intersection of applied research and engineering. • Work closely with researchers, protocol designers, software architects, and QA teams to ensure cryptographic correctness, performance, and maintainability. • Design and implement constructions such as digital signatures, zero-knowledge proofs, VRFs, commitment schemes, and accumulators. • Develop and maintain cryptographic libraries, primarily using Rust and Haskell, with occasional C for safety and performance. • Translate academic research and formal specifications into reliable, well-structured production code. • Participate in cryptographic design discussions, parameter tuning, and performance benchmarking. • Analyse and validate protocol design for security properties such as soundness, liveness, and resistance to practical attacks. • Troubleshoot, debug, and optimise cryptographic code and its interaction with broader systems. • Write and maintain clear documentation, including developer guides and internal design notes. • Stay current with developments in cryptography and assess their relevance for projects.

🎯 Requirements

• Typically, a PhD in Computer Science, Cryptography, Mathematics, or a related field. • Proven experience in academic publications. • Practical experience in applied cryptographic engineering through academic research, industry work, or open-source contributions. • Proven proficiency in Rust (and ideally some Haskell) for systems-level cryptographic development. • Experience with version control systems, especially Git, in collaborative development environments. • Exposure to cryptography for blockchain, distributed systems, or consensus mechanisms is a plus. • Solid mathematical foundation in cryptography, number theory, finite fields, and probability. • Ability to work independently in highly-complex cryptographic topics. • Experience with elliptic curve cryptography, digital signatures, multi-signature schemes, and cryptographic commitments. • Familiarity with zero-knowledge proof systems and their application in distributed or blockchain-based protocols. • Hands-on experience implementing cryptographic primitives and protocols in Rust; exposure to Haskell is highly advantageous; familiarity with C is a plus. • Good understanding of cryptographic protocol design, including security properties like soundness and adversarial modelling. • Ability to read, interpret, and implement cryptographic research papers and formal specs. • Strong problem-solving and debugging skills, with a security-first mindset. • Clear written and verbal communication skills to collaborate effectively across engineering and research teams.

🏖️ Benefits

• Remote work • Laptop reimbursement • New starter package to buy hardware essentials (headphones, monitor, etc) • Learning & Development opportunities • Competitive PTO