Jobs for Developers

Rust Engineer/ Blockchain Security Engineer

Crypto.comFull-timeMadrid, SpainJan 28, 2026
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Responsibilities

  • Development activities include development, proposing architectural decisions, participating in designs, design review, code review, and implementation Identify issues and implement solutions to complex problems in the blockchain protocol
  • Analyze and solve difficult problems across the blockchain protocol
  • Work closely with operations and infrastructure to build high scale backend services
  • Management of documentation of all code and functionalities implemented
  • Work closely with DevOps and ecosystem engineers to improve tech stack for long-term engineering initiatives

Requirements

  • Interested in building first-class product to solve real-world problems
  • Experienced with various technologies, a fast learner and have a "get things done" mentality
  • Strong organizational skills, interpersonal skills and having the ability to juggle conflicting requirements from many different stakeholders
  • Humble to embrace better ideas from others, eager to make things better, open to challenges and possibilities
  • Self-starter who can define and execute tasks with minimal guidance
  • Open to learning, collaborative, willing to give and receive feedback 5+ years of engineering experience, preferably strong backend development experience (e.g. Go, Rust, Java, Erlang)
  • Hands-on experience in using basic cryptographic primitives (e.g. BouncyCastle in Java): digital signatures, key exchange, symmetric and asymmetric encryption Basic knowledge of distributed systems and understanding of consensus algorithms, such as Raft or PBFT
  • Experience with or interest in Go or Rust Hands-on experience with any existing blockchain system internals is welcomed but not required

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