Rust Web3 Jobs in North America

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Job Position Company Posted Location Salary Tags

Polar Bear Systems.

United States

$175k - $240k

Caiz

New York, NY, United States

$133k - $240k

Kraken

United States

$127k - $203k

Blockstream

Vancouver, Canada

$35k - $80k

Blockstream

Mountain View, CA, United States

$98k - $110k

Nika Finance

New York, NY, United States

$80k - $150k

Ampstek

United States

$36k - $54k

Ampstek

United States

$36k - $54k

Stellar

San Francisco, CA, United States

$180k - $210k

Eclipse

San Francisco, CA, United States

$105k - $180k

Logos

New York, NY, United States

$63k - $68k

Vac

New York, NY, United States

$63k - $68k

Vac

New York, NY, United States

$77k - $120k

Selby Jennings

New York, NY, United States

$300k - $400k

Siddha Privacy,Inc.

Los Angeles, CA, United States

$190k - $280k

Polar Bear Systems.
$175k - $240k estimated
MA Cambridge US
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Company Description

Polar Bear Systems (PBS) is a Web(n) Blockchain development organization founded in July 2019. PBS aims to bring clients to a below-freezing chilled state by providing innovative solutions. The company strives to offer solutions that elevate clients to their maximum potential.


Role Description

This is a volunteer hybrid position for a Blockchain Cybersecurity Specialist at Polar Bear Systems, located in Cambridge, MA, with the option for remote work. The Specialist will be responsible for day-to-day tasks related to application security, cybersecurity, network security, and information security in the blockchain domain.


Key Responsibilities

  • Proven experience in blockchain security, penetration testing, or secure protocol design.
  • Hands-on experience with smart contract auditing tools (MythX, Slither, Foundry, Hardhat).
  • Strong understanding of:
  • EVM-based chains (Ethereum, BSC, Polygon)
  • Layer 2 rollups and cross-chain bridges
  • Consensus mechanisms (PoW, PoS, PoH, PoA)
  • Familiarity with Solidity, Rust, or Go.
  • In-depth knowledge of cryptographic protocols (SHA, ECDSA, BLS, Merkle Trees).
  • Knowledge of Web3 authentication and wallet infrastructure (Metamask, WalletConnect, Ledger).
  • Experience with DevSecOps practices and CI/CD pipelines.
  • Strong communication and documentation skills.

Qualifications

  • Experience with ZK-SNARKs, MPC, or post-quantum cryptography.
  • Background in traditional cybersecurity (CISSP, OSCP, CEH a plus).
  • Contributions to blockchain or open-source security projects.
  • Familiarity with KYC/AML, zero-knowledge identity, and compliance tooling.

Tools & Technologies You’ll Use

  • Solidity, Rust, Go
  • Hardhat, Foundry, Mythril, Slither
  • Wireshark, Metasploit, Burp Suite
  • OpenZeppelin, Certora, Chainlink, Forta
  • GitHub, GitLab CI/CD, AWS, Docker, Kubernetes

Why Join Us

  • Be at the frontier of Web3 security innovation
  • Competitive compensation + token equity (if applicable)
  • Collaborative, fully remote culture with growth opportunities
  • Access to high-impact projects across DeFi, DAOs, NFTs, and L2s
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