Backend Engineer

Spruce is hiring programmers to develop world-class open source products and libraries implementing open global standards in identity. At Spruce, we are reimagining trusted interactions by creating the world’s best software for packaging beliefs digitally, starting with Web3. We hire programmers who love technology and are committed to intellectual honesty, user privacy, and innovation.

You will be responsible for developing cross-platform libraries and server software in Rust. Our software is secure by design, professionally audited, and suitable for high stakes applications. You will also have the opportunity to contribute to emerging global technology standards for digital identity.


  • Excellent written communications skills (necessary for remote work)
  • Experience writing widely-distributed backend software in statically-typed languages
  • Aptitude for computer security, correct use of cryptography, and user data privacy
  • Proficiency in backend web frameworks, API design, databases, and scalability
  • Can manage CI/CD pipelines based on containers and cloud services
  • Comfortable with rapid directional changes of focus in a startup environment


  • Experience building distributed storage systems at scale
  • Proficiency with functional programming paradigms
  • Contributions to open source software projects and technology standards
  • Full-time experience with working remotely
  • Familiarity with operating system and compiler internals
  • Experience with Rust, C++, OCaml, or Haskell
  • Experience with specification tools and model checkers such as Alloy, TLA+, or Coq
  • Have worked in a high stakes industry such as cloud infrastructure, finance, healthcare, social media, and online gaming

At Spruce we are passionate about cultivating a thriving culture of diverse individuals who bring unique perspectives to our mission. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.