| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Polar Bear Systems. | United States | $175k - $240k | |||
Nika Finance | New York, NY, United States | $80k - $150k | |||
Albusleo Ventures Inc. | Miami, FL, United States | $63k - $75k | |||
VanEck | New York, NY, United States | $36k - $54k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
Fmr | United States | $86k - $150k | |||
Limit Break | United States | $90k - $104k | |||
Limit Break | United States | $90k - $100k | |||
Molecule | New York, NY, United States | $105k - $120k | |||
Eigen Labs | Seattle, WA, United States | $190k - $225k | |||
Fortytwo | United States | $74k - $100k | |||
molecule.xyz | New York, NY, United States | $36k - $75k | |||
Ether.fi | Cayman Islands, Cayman Islands | $63k - $65k | |||
ZetaChain | Remote |
| |||
Rome Protocol | Los Angeles, CA, United States | $8000k - $13000k | |||
Rome Protocol | Los Angeles, CA, United States | $8000k - $13000k |
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