Fidelity Investments · 1 week ago
Principal Blockchain Platform Engineer - Digital Assets
Westlake, TX
Full-time
Hybrid
Senior Level, Lead/Staff
$107K/yr - $216K/yr
8+ years expFidelity Investments is developing a full-service enterprise-grade platform for storing, trading, and servicing digital assets, such as Bitcoin and Ethereum. They are seeking a Principal Blockchain Infrastructure Engineer to design, build, and operate production-grade blockchain infrastructure on AWS and Kubernetes, managing the full lifecycle of node operations for Bitcoin, Litecoin, and Ethereum.
Asset ManagementFinanceFinancial ServicesRetirementWealth 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 Investments
Fidelity’s mission is to strengthen the financial well-being of our customers and deliver better outcomes for the clients and businesses we serve.
10001+ employees
H1B Sponsorship
Fidelity Investments has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2024 (8)
2023 (4)
2022 (6)
2021 (8)
2020 (30)
Funding
Current Stage
Late StageTotal Funding
$152.82MKey Investors
Apple
2020-12-28Secondary Market· $2.5M
2018-01-14Secondary Market· $1M
2017-05-03Secondary Market· $12.5M
Leadership Team
Abigail Johnson
Chairman & CEO
Jeanmarie Ward
Senior Vice President of Architecture
Recent News
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