Senior Systems Engineer

Summary

Join Nansen, a blockchain analytics platform, as a Senior Staking Systems Engineer to build and maintain secure, scalable staking systems. You will design, deploy, and manage infrastructure across multiple Proof-of-Stake (PoS) networks, collaborating with various teams to ensure optimal performance and security. This role demands expertise in Linux systems administration, networking, automation, and a deep understanding of staking protocols. The position is 100% remote and based anywhere in Europe. Nansen offers a competitive salary, equity, flexible schedule, and opportunities for professional growth within a supportive and innovative team.

Requirements

• 3+ years of experience in systems engineering, SRE, or a related role
• Strong proficiency in Linux system administration
• Experience with containers and Kubernetes
• Proficiency with Terraform or similar tooling for infrastructure automation
• Experience with monitoring and logging tools (e.g. Prometheus, Grafana, ELK stack)
• Experience managing fleets of machines with configuration management tools (e.g. Chef, Puppet, SaltStack, or Ansible)
• Strong networking knowledge (TCP/IP, HTTP/2, firewalls)
• Experience with gRPC and load balancing
• Solid understanding of security best practices for Linux systems and networks
• Understanding of staking protocols and blockchain consensus mechanisms

Responsibilities

• Deploy and manage validator, sentry, and RPC nodes for various PoS blockchains, ensuring high availability and scalability in both cloud and bare-metal environments. This includes ongoing system administration, performance tuning, and security hardening
• Implement and maintain infrastructure as code using Terraform and configuration management tools
• Develop and manage CI/CD pipelines for infrastructure automation
• Implement and maintain robust security practices across the entire staking infrastructure, including firewall configuration, access control, and validator key management
• Implement and maintain comprehensive monitoring and alerting to proactively identify and address performance, health, and security issues
• Configure and manage network infrastructure, including load balancing and firewalls
• Troubleshoot incidents, perform root cause analysis, and participate in an on-call rotation (including weekends when necessary)
• Work closely with other engineering teams and maintain detailed documentation of system configurations and procedures

Preferred Qualifications

• Knowledge of cryptography, experience with HSMs and key management solutions
• Prior experience in staking or running blockchain infrastructure at scale, including validator key management
• Familiarity with major staking protocols (Ethereum, Solana, Cosmos, Polkadot)

Benefits

• Competitive salary and generous equity
• Remote work environment with a flexible schedule
• A team that values learning and is willing to test and adopt innovative solutions (including AI)
• A company culture that values speed, ownership, curiosity, simplicity, transparency and courage
• Opportunities for personal and professional growth as the company scales
• Exposure to a global network of industry experts, partners and influencers