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Halliday Logo

Software Engineer

Halliday

$150,000 - $190,000
Oct 17, 2025
Remote, US
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Halliday is looking to solve the business and technical problem of creating a unified, cross-chain payments ecosystem by building the core infrastructure that drives the future of commerce, making blockchain accessible, seamless, and secure.

Requirements

  • Experience as a software engineer, demonstrated through impactful projects such as developing scalable applications, building robust APIs, or contributing to widely-used libraries and frameworks.
  • Experience working with blockchain technologies, including EVM-based chains, Bitcoin, and/or Solana.
  • Solid understanding of blockchain concepts, including smart contracts, cryptography, and decentralized applications.
  • Familiarity with modern web services, cloud infrastructure, containerization, and deployment pipelines.

Responsibilities

  • Architect and build secure distributed systems that integrate blockchains, cryptography, decentralized finance, zero knowledge proofs, and many other bleeding edge technologies.
  • Develop scalable services, APIs, and robust testing frameworks to support our platform.
  • Utilize open-source blockchain SDKs to interact with various networks, protocols, and smart contracts.
  • Contribute to the development and refinement of Halliday’s public SDKs, making it easy for developers to integrate with our services.
  • Collaborate with cross-functional teams, including design, product, engineering, and business to build impactful solutions that advance the web3 ecosystem.
  • Innovate and expand on our foundational cross-chain protocol.
  • Continuously identify and implement improvements to enhance our platform's performance, security, and scalability.

Other

  • A quick learner with a passion for exploring new technologies and creating innovative solutions.
  • A collaborative mindset and excellent problem-solving skills.
  • Located in or willing to relocate to the San Francisco Bay Area or New York City.
  • A role with significant autonomy to build out the next generation infrastructure of the blockchain space.
  • For international candidates - we offer visa sponsorship!