Responsibilities
- Architect and maintain containerized blockchain nodes on AWS/EKS using Terraform, Helm, and CI/CD pipelines.
- Operate Bitcoin/Litecoin full/archive nodes (UTXO set, mempool, pruning, peer policies) with high-availability RPC and optimized disk I/O.
- Operate Ethereum execution clients (e.g., Geth, Nethermind, Erigon, Besu) and consensus clients (e.g., Prysm, Lighthouse, Teku, Nimbus); manage beacon/execution pairings, JWT secrets, and checkpoint sync.
- Implement observability and telemetry using Prometheus/Grafana, Splunk, and Datadog for metrics, logs, and distributed tracing.
- Own backup/restore/DR strategies: snapshots, archive retention, multi-AZ and multi-region failover.
- Ensure hardfork readiness: plan and execute client upgrades, compatibility testing, and rollback strategies.
- Monitor and mitigate chain reorganizations (reorgs): implement alerts, RPC consistency checks, and failover strategies for deep reorg scenarios.
- Lead incident response, post-mortems, and resilience testing; drive SRE practices and continuous improvement.
- Stay current with node software packaging and releases: track upstream client updates, security patches, and dependency changes.
- Implement zero-downtime deployment strategies for node upgrades using rolling updates, canary releases, and Kubernetes best practices.
- Participate in on-call rotation to provide 24/7 support for production incidents, ensuring rapid response and resolution within defined SLAs.
Requirements
- Bachelor's degree in computer science or related field required
- 8+ years in infrastructure/SRE/DevOps roles, with 3+ years operating blockchain nodes in production.
- Deep expertise with AWS (EKS, EC2, EBS/EFS, VPC, NLB/ALB, CloudWatch, IAM, KMS) and Kubernetes/EKS.
- Strong IaC: Terraform, Helm; CI/CD pipelines.
- Hands-on experience with: Staking validator operations
- Ethereum: execution + consensus clients; JWT, checkpoint sync, archival strategies.
- Bitcoin/Litecoin: bitcoind/litecoind, txindex, mempool policies, pruning/archive.
- Observability: Prometheus/Grafana, Splunk, Datadog, alerting, log aggregation.
- Experience with hardfork upgrade planning and reorg mitigation strategies.
- Experience with high-throughput RPC products and global traffic management.
- Programming proficiency in Python, Bash; strong Linux systems skills.
Benefits
- Comprehensive health care coverage and emotional well-being support
- Market-leading retirement
- Generous paid time off and parental leave
- Charitable giving employee match program
- Educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career
Work Arrangement
Hybrid
Additional Information
- Placement in the range will vary based on job responsibilities and scope, geographic location, candidate’s relevant experience, and other factors.
- Base salary is only part of the total compensation package. Depending on the position and eligibility requirements, the offer package may also include bonus or other variable compensation.
- Fidelity’s business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.
- Most roles at Fidelity are Hybrid, requiring associates to work onsite every other week (all business days, M-F) in a Fidelity office. This does not apply to Remote or fully Onsite roles.
