Common Prefix

Blockchain / Web3

Overview

Common Prefix is a scientific blockchain R&D firm that designs, audits, and implements cryptographic and consensus protocols for leading L1s, L2s, and DeFi systems, combining academic research with applied engineering.

Key Information

Central Office: Tallinn, Estonia
Founded: 2021

Links

Website Careers portal

Past Jobs

EXPIRED

Senior Software Engineer

Senior+

🏠

Remote

Senior Software Engineer building blockchain protocols and infrastructure, working primarily in Rust. Requires 5+ years software engineering experience with large-scale systems and network programming.

Rust

First seen Nov 9, 2025 Last seen May 9, 2026

EXPIRED

Formal Verification Engineer

🏠

Remote

Formal Verification Engineer verifying blockchain protocols and smart contracts. Lean4, Coq, F*, or TLA+ with functional and formal verification, focusing on invariants, safety properties, and distributed system correctness.

F*Lean4Rocq ProverTLA+

First seen May 24, 2026 Last seen Jun 29, 2026