Who we are:

PolySign is a startup in downtown Oakland working on institutional custody for cryptocurrencies. Cryptocurrencies are an exciting emerging market, but security (custody) is the major problem preventing its mainstream adoption. As a member of a small, world-class technical team, you can can have a huge impact on our solution and the success of cryptocurrencies.

PolySign is co-founded by Arthur Britto, a co-founder of Ripple, a recognized leader in payments technology.

What you'll do:

You'll be working on a microservice backend architecture that form the core of the PolySign custody platform. You'll help build a highly secure, and scalable distributed system that is reliable, and fault-tolerant. We have a high bar for code quality, and would expect the same from you.


  • Experience with building, and maintaining microservices (or big functional pieces in a monolithic system)
  • Some experience with message queues, task queues, caching, etc.
  • Experience in at least one compiled and one interpreted language

Nice to have

  • Experience with Python
  • Experience with RPC systems
  • Experience with AWS and Kubernetes
  • Experience with user identity/cryptography/public blockchains

Our key technologies:

  • Backend: Python (gRPC, Tornado), C, postgresql, RabbitMQ
  • Infrastructure: AWS, Kubernetes, Docker
  • OS: Linux

What we offer:

  • The opportunity to join a well-funded, cutting-edge financial technology company at a very early stage
  • Competitive salary and equity
  • Competitive medical benefits
  • 401k
  • Flexible working policies: we work twice a week from home
  • Smart coworkers who are world class experts in the field of cryptography

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