Fidelity Bank · 1 day ago
Principal Blockchain Platform Engineer - Digital Assets
Westlake, TX
Full-time
Hybrid
Lead/Staff
$107K/yr - $216K/yr
8+ years expFidelity Bank is seeking a Principal Blockchain Infrastructure Engineer to design, build, and operate production-grade blockchain infrastructure on AWS and Kubernetes. The role involves managing the lifecycle of node operations for Bitcoin, Litecoin, and Ethereum, ensuring performance, reliability, security, and scalability.
BankingBitcoinCustomer ServiceFinancial ServicesInsuranceWealth Management
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
Qualification
Required
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
Hands‑on experience with Ethereum: execution + consensus clients; JWT, checkpoint sync, archival strategies
Hands‑on experience with 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
Company
Fidelity Bank
Fidelity Bank is a commercial bank providing services financial sercvices.
1001-5000 employees
Funding
Current Stage
Late StageTotal Funding
unknown2018-12-17Acquired
2014-09-01Private Equity
Company data provided by crunchbase