Principal Blockchain Platform Engineer - Digital Assets
at Fidelity Investments
Posted 6 days ago
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- Compensation
- $107,000 – $216,000 USD
- City
- Not specified
- Country
- United States
Currency: $ (USD)
We are seeking a Principal Blockchain Infrastructure Engineer to design, build, and operate production-grade blockchain infrastructure on AWS and Kubernetes (EKS). You will manage the full lifecycle of node operations for Bitcoin, Litecoin, and Ethereum, ensuring performance, reliability, security, and scalability. This role is critical for delivering robust RPC services, validator operations, and data pipelines. It requires leadership in incident response, resilience testing, and continuous improvement of SRE practices.
Job Description:
Principal Blockchain Platform Engineer (AWS/EKS, Bitcoin/Litecoin/Ethereum)
The Role
We’re seeking a Principal Blockchain Infrastructure Engineer to design, build, and operate production‑grade blockchain infrastructure on AWS and Kubernetes (EKS). You’ll manage the full lifecycle of node operations for Bitcoin, Litecoin, and Ethereum—ensuring performance, reliability, security, and scalability. This role is critical for delivering robust RPC services, validator operations, and data pipelines.
The Expertise and Skills You Bring
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.
What You’ll Do
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.
The Team
Fidelity Digital Assets®, a Fidelity Investments Company, is developing a full-service enterprise-grade platform for storing, trading, and servicing digital assets, such as Bitcoin and Ethereum.
Fidelity Digital Assets® adopts an entrepreneurial culture and startup approach while serving as one of the most innovative business units within Fidelity Investments. Our global, diverse team of hundreds of forward-thinking professionals lead with agility and creativity to build solutions that bridge the gap between traditional institutional investors and their exposure to digital assets. The firm’s tenure and experience across multiple business lines present our employees with unprecedented access to knowledge, technology, and resources that help our team reshape the future of finance.
Within
Fidelity Digital Assets®, the Wallet Blockchain Platform Team is responsible for the backend services and APIs that support digital assets transactions on networks such as Bitcoin and Ethereum. The team will also lead tokenization efforts.
The base salary range for this position is $107,000-216,000 USD per year.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.
We offer a wide range of benefits to meet your evolving needs and help you live your best life at work and at home. These benefits include comprehensive health care coverage and emotional well-being support, market-leading retirement, generous paid time off and parental leave, charitable giving employee match program, and educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career. Note, the application window closes when the position is filled or unposted.
Please be advised that 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.
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Information TechnologyCompany overview
At Fidelity, we are passionate about making our financial expertise broadly accessible and effective in helping people live the lives they want! We are a privately held company that places a high degree of value in creating and nurturing a work environment that attracts the best talent and reflects our commitment to our associates. We are proud of our diverse and inclusive workplace where we respect and value our associates for their unique perspectives and experiences. For information about working at Fidelity, visit FidelityCareers.com. Fidelity Investments is an equal opportunity employer. Fidelity will reasonably accommodate applicants with disabilities who need adjustments to complete the application or interview process.
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About Fidelity
Join us
At Fidelity, you’ll find endless opportunities to build a meaningful career that positively impacts peoples’ lives, including yours. You can take advantage of flexible benefits that support you through every stage of your career, empowering you to thrive at work and at home. Honored with a Glassdoor Employees’ Choice Award, we have been recognized by our employees as a Best Place to Work in 2026. And you don’t need a finance background to succeed at Fidelity—we offer a range of opportunities for learning so you can build the career you’ve always imagined.
Fidelity's working model blends the best of working offsite with maximizing time together in person to meet associate and business needs. Currently, most hybrid roles require associates to work onsite all business days of one assigned week per four-week period (beginning in September 2024, the requirement will be two full assigned weeks).
We invite you to Find Your Fidelity at fidelitycareers.com.
Fidelity Investments is an equal opportunity employer. We believe that the most effective way to attract, develop and retain a diverse workforce is to build an enduring culture of inclusion and belonging.
Fidelity will reasonably accommodate applicants with disabilities who need adjustments to participate in the application or interview process. To initiate a request for an accommodation, contact the HR Accommodation Team by sending an email to accommodations@fmr.com, or by calling 800-835-5099, prompt 2, option 3.
At Fidelity, we value honesty, integrity, and the safety of our associates and customers within a heavily regulated industry. Certain roles may require candidates to go through a preliminary credit check during the screening process. Candidates who are presented with a Fidelity offer will need to go through a background investigation and may be asked to provide additional documentation as requested. This investigation includes but is not limited to a criminal, civil litigations and regulatory review, employment, education, and credit review (role dependent). These investigations will account for 7 years or more of history, depending on the role. Where permitted by federal or state law, Fidelity will also conduct a pre-employment drug screen, which will review for the following substances: Amphetamines, THC (marijuana), cocaine, opiates, phencyclidine.
Benefits that adapt to everything life sends your way
401(k) with company match
Medical, dental, vision and prescription drug coverage
16-week maternity leave & 12-week parental leave
Student loan assistance
Fidelity is invested in you
Committed to Professional Development
At Fidelity, we are constantly adapting to the changing needs of our customers, new technologies, and better ways of working. And we empower our employees to do the same, with an emphasis on developing skills and connections that will help propel you forward in your career while being able to make an impact for Fidelity’s customers around the world.
We offer a wide range of options for professional development including online, in-person, and mentor driven solutions. Special interest and networking groups are also part of our culture of empowerment, personal and professional enrichment, diversity and inclusion, and knowledge sharing.
Continuing Education & Training
- Assess, build, and align your development plan through resources like our skill-building classroom and online courses.
- Video-based training for technology, leadership, management & more.
- Ongoing skills development and coaching opportunities.
- Paid training with a facilitator who is dedicated to your onboarding and will track and evaluate your progress, giving you strategies to improve.
- A range of talent development programs to support career mobility.
Mentoring
- Utilize the skills of experienced leaders to enrich your career.
- Dedicated mentors to help you grow into new areas of Fidelity’s business as you develop new skills.
- An open atmosphere of knowledge sharing and collaboration.
- Opportunities to pay it forward, sharing the knowledge you develop and as you help others define how they want their career to take shape.
Our Commitment
Discover opportunities to build a fulfilling career within a supportive culture that celebrates individuality. We empower our associates to pursue career paths that align with their unique goals and personalities.
Giving back to our communities
Throughout Fidelity, you’ll find a genuine commitment to social responsibility – where we strive to make an impact for customers, while also making an impact on the world.
Fidelity Cares
- Provides associates with opportunities to actively volunteer and share their talents.
- Hosts numerous company-wide volunteer events (in-person and virtual).
- Partners with nonprofit organizations to support our local communities.
- More than 12,500 associates donate time annually – from interns to SVPs.
- Impact includes refurbishing schools, donating books and supplies, and teaching financial literacy.
Fidelity Charitable®
- Created to make it easy for people to support charitable organizations they care about.
- Helped deliver $14.9billion in donor-recommended grants to charity in 2024.
- Supported more than 433,000 unique charities around the world.
- Since its inception, more than $100 billion has been given to public charities.
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