Senior Software Engineer

Company: Halliday
Location: San Francisco
Posted on: April 2, 2025

Job Description:

About HallidayHalliday is the first Agentic Workflow protocol. By safely involving AI and third parties in complex workflows, Halliday enables you to create breakthrough applications in hours, not years.Halliday Payments, the first-party application built on top of the protocol, streamlines onboarding by enabling users to seamlessly acquire any asset on your chain with just a single click, creating a frictionless user experience.Backed by a16z and #Hashed, we have partnered with prominent developers such as ApeChain, Story Protocol and DeFi Kingdoms.Our team comes from Stanford, Harvard, and Carnegie Mellon, and has years of experience at the most recognized Web2 and Web3 brands in the world, including Alphabet, Meta, Netflix, Stripe, Compound and moreAbout the roleAs a Senior Software Engineer at Halliday, you'll play a pivotal role in designing and building the core infrastructure driving the future of commerce. This is an opportunity to work on cutting edge technology that makes blockchain accessible, seamless, and secure, while collaborating with a talented and passionate team.What you'll be doing

• 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.What we're looking for
  • Strong expertise as a full-stack engineer, with experience in frontend, backend, and/or protocol development.
  • Extensive 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.
  • 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.Nice to haves
    • 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.Why Work at Halliday?
      • A role with significant autonomy to build out the next generation infrastructure of the blockchain space.
      • Competitive compensation package, with unlimited PTO and a friendly work environment.
      • For international candidates - we offer visa sponsorship!CompensationThe base salary range for this role is $150,000 - $250,000. This reflects the minimum and maximum range across all US locations. This does not include equity or benefits.The actual base pay is dependent upon many factors, such as: experience, relevant skills, and role level. Your recruiter can share more about the compensation and benefits applicable to your location during the hiring process.
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Keywords: Halliday, San Francisco , Senior Software Engineer, Accounting, Auditing , San Francisco, California