Code4rena Senior Software Engineer Remote · Full time

Join us and play a crucial part in scaling and securing Web3 security products.


About Code4rena

Code4rena is the leading smart contract security marketplace. We invented the competitive audit, incentivizing thousands of security researchers on our platform to compete to find more rare, high-severity vulnerabilities than any other model.

Having conducted over 280 audits since launching in 2021, we scale the best security outcomes while broadening and deepening the talent pool, proven by our public data and industry-defining leaderboard. We're also constantly innovating. Last year, we launched Bot Races, incentivizing an AI-enabled labor force, and Profiles, matching projects to top security talent.

We're a dynamic, fully distributed team backed by Paradigm and are looking for highly ambitious new teammates to join us on our mission to improve smart contract security.

About the Role

As a Senior Software Engineer at Code4rena, you will:

  • Architect and build core product features from start to finish; from conception and research to implementation and iteration, all the way through deployment, maintenance, and future iterations
  • Help architect and build performant backend systems for serving our core platform features
  • Collaborate with other Engineers to map out how parts of our systems fit together from the UX to the underlying APIs and data modelsĀ 
  • Mentor and train other team members, in a distributed environment, on best practices and approaching large ambiguous problems
  • Collaborate with Product Design, Contest Administrators, and other Engineers to prioritize, scope, and architect new features
  • Prioritize projects and tasks based on impact; balancing moving fast and building for the long haul


To excel in this role, you should possess the following qualifications:

  • Deep knowledge of web technologies and large-scale web application architectures
  • Familiarity with current trends and best practices in front-end architecture, including performance, security, and usability
  • 5+ years of industry experience building scalable and performant production UIs and APIs using a stack similar but not limited to React, Next.js, Typescript, Node.js, and Postgres (or similar SQL-type databases)
  • Strong customer empathy; you think critically of how our features impact our community, users, and business
  • Strong collaboration skills, especially around keeping the team apprised of status, workload, blockers, etc.

Nice to have

To excel in this role, you should possess the following qualifications:

  • Familiarity and/or experience with DeFi, Web3, or blockchain
  • Familiarity and/or experience with Web3 security
  • Experience with AWS and the Hashicorp suite of tools and products
  • Experience with the Hapi JS framework
  • Expertise with performance debugging and benchmarking