Input Output Global (IOHK)

Blockchain / Web3

Overview

Input Output Global (IOHK) is a blockchain research and development company known for its role in developing Cardano, a proof-of-stake blockchain platform. IOHK focuses on peer-reviewed research and decentralized technology to create secure and scalable blockchain solutions.

Key Information

Central Office
Singapore
Founded
2015

Links

Past Jobs

EXPIRED

Software Engineer (Haskell) - Performance & Tracing - IOE: Cardano

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Remote

Haskell
First seen Jul 29, 2025 Last seen Aug 7, 2025
EXPIRED

Principal Software Engineer (Haskell) - Consensus - IOE: Cardano

Principal+
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Remote

Principal Haskell engineer leading architecture and delivery of complex consensus and distributed-system components for blockchain. Deep Haskell, performance debugging, security, testing frameworks, CI/CD, and research-to-production translation.

Haskell
First seen Dec 10, 2025 Last seen Jan 3, 2026
EXPIRED

Formal Methods Engineer (Djed) - IOE: Cardano

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Remote

Haskell
First seen Feb 27, 2025 Last seen Jun 22, 2025
EXPIRED

Formal Methods Engineer - Innovation R&D

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Remote

Haskell
First seen Feb 27, 2025 Last seen May 26, 2025
EXPIRED

Software Engineering Lead (Haskell) - Consensus

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Remote

Haskell
First seen Feb 27, 2025 Last seen Mar 19, 2025
EXPIRED

Software Engineer - Compiler

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Haskell
First seen Feb 27, 2025 Last seen Mar 19, 2025
EXPIRED

Formal Methods Engineer (Verification) - Innovation R&D

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Remote

Haskell
First seen Feb 27, 2025 Last seen Mar 27, 2025
EXPIRED

Applied Cryptographer - Bitcoin DeFi

Senior+
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Remote

Applied cryptographer building secure Bitcoin-focused DeFi primitives. Work spans signatures, ZK proofs, VRFs, commitments, and accumulators using Rust and Haskell, translating research into production code with performance, auditability, and security at the core.

HaskellRust
First seen Dec 10, 2025 Last seen Dec 10, 2025
EXPIRED

DevX Engineer - IOE: Cardano

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Remote

Haskell
First seen Feb 27, 2025 Last seen May 10, 2025