Blockchain and Protocol Engineer

Portal logo Portal

Job Description

  • Design and build blockchain components, consensus, tools for Portal ecosystem
  • Provide high-quality testable code (TDD).
  • Enhance the team’s technical knowledge.
  • Collaborate with auditors to ensure code quality and security.
  • Work closely with cross-functional teams on product development and the integration of blockchain solutions into the company’s existing ecosystem.
  • Encourage and mentor junior colleagues.


  • Good understanding of distributed systems and network protocols
  • 5+ years of blockchain development experience.
  • Experience in backend development using JS/Nodejs/Rust/Go
  • Practical experience deploying smart contracts on major blockchain mainnets.
  • Experience creating/working in a team that created an L2 or L1 systems is a plus
  • Understanding and being able to reason about different scalability approaches, such as rollups and sidechains, knowledge of ZK rollups is a big plus.
  • Experience of writing smart-contracts (using Solidity or Vyper) is a plus
  • Practical experience using Lotion.js
  • Practical blockchain experience with a thorough understanding of consensus algorithms.
  • Bachelor’s Degree (or higher) in CS/Mathematics/Physics.
  • Quick learner with an ambitious and results-oriented mindset.
  • Ability to work as part of a team in a fast-paced environment.
  • Outstanding communication and organisational abilities.
  • Fluent English.
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