Senior DevOps Engineer

Key Responsibilities

Infrastructure & Environment Management

• Design, build, and maintain secure, highly available AWS environments using Infrastructure as Code (Terraform / CDK)
• Set up and manage on-premise TEE infrastructure for secure MPC key computation
• Deploy and maintain all critical components: MPC TSS nodes (BTC, SOL, EVM, TRON), backend API servers, frontend web application, and blockchain full nodes

Blockchain Infrastructure

• Configure and monitor full node synchronization for Ethereum and other supported chains
• Manage RPC endpoints and load balancing across multiple nodes
• Ensure high availability of blockchain connectivity with automated failover and health checks

CI/CD & Deployment Automation

• Design and maintain end-to-end CI/CD pipelines using GitHub Actions or GitLab CI
• Implement blue-green and canary deployment strategies for zero-downtime releases
• Provide self-service build, test, and deployment tooling for the development team

Monitoring & Observability

• Build and maintain monitoring, logging, alerting, and tracing systems (Prometheus, Grafana, ELK Stack, Jaeger)
• Monitor all layers: AWS infrastructure, on-prem TEE nodes, blockchain nodes, MPC computation, and application performance
• Maintain SLA commitments with proactive alerting and incident response

Security & Compliance

• Enforce strict IAM, network segmentation, and zero-trust principles across both cloud and on-prem environments
• Integrate HSM/KMS for secure key management and MPC TSS operations
• Conduct regular security scans, vulnerability assessments, and penetration testing
• Manage SSL/TLS, Nginx reverse proxies, and firewall rules

High Availability & Disaster Recovery

• Design and implement cross-AZ and cross-environment disaster recovery plans
• Execute regular DR drills and maintain runbooks
• Maintain 99.9%+ uptime for all critical wallet services

Requirements

• 5+ years of DevOps, SRE, or cloud infrastructure engineering experience with large-scale distributed systems
• Expert-level knowledge of AWS and its managed services
• Deep hands-on experience with Docker and Kubernetes in production environments
• Proficiency with GitHub Actions or GitLab CI/CD
• Strong scripting or programming ability in at least one of: Go, Python, or Shell
• Solid Linux administration experience (Ubuntu / RedHat)
• Strong understanding of networking: firewalls, SSL/TLS, load balancing, DNS
• Hands-on experience with Prometheus, Grafana, or equivalent monitoring solutions
• Excellent technical documentation and cross-team communication skills

Nice to Have

• Direct experience operating Ethereum, Bitcoin, or other blockchain full nodes
• Familiarity with Web3 technologies, smart contracts, or DeFi protocols
• Understanding of MPC, cryptographic key management, or HSM integration
• Experience with service mesh technologies (Istio, Linkerd)
• Chaos engineering or fault injection testing experience
• Experience with HashiCorp Vault, AWS Secrets Manager, or similar secrets management tools
• Familiarity with Redis, TimescaleDB, or InfluxDB
• Security certifications (CISSP, AWS Security Specialty, or equivalent)
• Experience with multi-cloud or hybrid cloud architectures