Phylax Systems is hiring a
Web3 Protocol Engineer

Compensation: $90k - $150k *

Location: NY New York US

About Phylax

Phylax Systems is a tech startup building an open-source security protocol for securing decentralized applications (DApps) on L2 networks by actively censoring hacks on the underlying network.

Our team solves one of the most challenging problems in Web3: Security.

The decision for the Phylax team to work on hack prevention came directly from our own experience with a hack. Having gone through the devastating results of a hack, we knew that we needed to do something about it.

Since the early beginnings of our industry, over $10B have been lost to preventable hacks, while in July 2023, there were over 33 hacks in a single month!

About The Role

As the first Protocol Engineer in our team, you will spearhead the research and development of the Phylax Network. Your role will be critical in shaping our protocol strategy, designing a secure and efficient mechanism, and guiding its evolution.


  • Refine, simulate, and define the parameters of the Phylax Network mechanism that enables hack prevention on any integrated L2.
  • Lead the decision-making on the tech stack that we will use to implement the mechanism (e.g., app-rollup vs app-chain, Cairo vs Solidity, etc.). Choose the appropriate off-the-shelf technologies that are required for the mechanism.
  • Lead the implementation, maintenance, and security (e.g., audit coordination) of the Phylax protocol.
  • Collaborate with other team members to integrate Phylax Network with existing infrastructure.
  • Stay up to date on the latest developments in security and blockchain development (e.g., Foundry, etc.)
  • Create and maintain technical documentation for internal and external use.

About You

  • Strong knowledge of Solidity (or other smart contract language — convince us against Solidity!)
  • Experience researching and designing complex onchain mechanisms and onchain protocols.
  • Light mathematical background that can support the simulation and definition of the mechanism’s parameters.
  • Experience with protocol engineering and development tools.
  • Excellent problem-solving skills and ability to think analytically.
  • You are deeply involved in the crypto space.

Nice to Have

  • Prior experience in a fast-paced startup.
  • Familiarity with other programming languages (e.g., Rust, Typescript.)
  • Experience in implementing complex smart contracts with high TVL.
  • Experience in leading the Security of a protocol, including the management of audits and other OpSec activities.

Why join us

  • Be part of the Phylax Founding team.
  • Work on one of the most challenging topics in web3.
  • Be the owner of your project and build it from the ground up.
  • Deeply impactful work for the entire industry.
  • You’ll join a team that appreciates and embraces shitposting.

What we offer

  • Flexible PTO
  • Health Insurance
  • Major industry conferences and events covered
  • Remote-first, with a hub in NYC

Compensation Range: $130K - $200K

Apply Now:

Compensation: $90k - $150k *

Location: NY New York US

Benefits: Pto, Medical Insurance

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