Senior Blockchain Engineer

BlockFi is looking for a Senior Blockchain Engineer to join our growing team!

About Your Team

At BlockFi, our Security Team works across the entire spectrum of technologies and products that power our business, protecting over ~$10B in value.

This is a unique role that reports into the entire Security Team and will be focused on solving complex, in-house problems, often where off the shelf solutions do not exist. The Security Team is largely remote, working across timezones and prides itself on being solutions-focused. While facing incredibly complex threats in an ever-change security landscape, BlockFi has continued to thrive and needs the right tools built by passionate and energetic people.

Your Mission

As a Senior Engineer on the Security Team, you’ll be a part of a team that directly impacts work across our core functions: security operations and incident response, threat intelligence, red team, and fraud and risk. Much of what we need needs to be built and much of what we have needs to be refined. The Special Projects team is the go-to team that serves as the primary technical execution arm for the Chief Security Officer for the firm’s most sensitive projects. Navigating complex technical problems and providing insight, technical direction, and technical execution will be your day-to-day.The ability to build a solid working relationship with our core product engineering team and others including compliance and legal is a must.

Responsibilities:

• Develop novel security solutions to safeguard client assets
• Lead a team of engineers in successfully developing solutions to safeguard client assets
• Serve as the conduit between different engineering teams within the security organization as well as the product engineering organization
• Dive into novel emerging technologies such as multi-party computation (MPC)
• Build and maintain BlockFi’s custody solution and integrations
• Research and understand new crypto assets and be able to integrate them into our custody systems
• Work cross-functionally with multiple BlockFi teams
• Actively participate in scaling the team and solutions
• Build the system that safely sign and broadcast operations across many networks
• Design and build automations

Your Expertise

• Ability to take a pragmatic approach to developing solutions to complex problems
• Highly motivated, self-starter, and ability to work autonomously
• Extreme ownership mentality; you take responsibility for your projects and work
• Possess curiosity, knowledge of multiple programming languages, strong advocate for best engineering practices, and the ability to learn new technologies
• Applied development experience related to custody technology, preferably in digital assets
• Security and detail oriented
• Experience working with production environments at any scale
• Proficient in basic cryptography concepts
• Proficient in code versioning tools; Git
• Deep experience in languages such as python, Go, JS, C, C++ or Rust and relevant accompanying libraries
• Deep knowledge of the cryptocurrency ecosystem (BTC, ETH, etc.) and underlying technologies (blockchain, PoW, PoS, etc.)
• Deep understanding for how Bitcoin works
• Ability to pick up new programming languages as needed
• Hands on experience with a broad range of security topics such as UEFI SecureBoot, PKI design, user security, secure CI/CD, and network security is preferred
• Experience with automated testing platforms and unit tests
• Knowledge and passion for crypto assets and blockchain technology and networks
• Consistent high levels of strong technical documentation and effective monitoring
• Ability to reason and build threat models during development
• Knowledge and experience with HSMs
• Basic DevOps knowledge across Docker and Kubernetes (AWS)
• Experience using and building for LinuxAbility to use Linux OS
• Knowledge of user authentication and authorization across multiple environments

Bonus Points for:

• Advanced knowledge of cryptography concepts
• Prior experience with production grade cryptocurrency custody solutions
• Deep knowledge of DevOps across docker and Kubernetes