Protocol Engineer - Platform

About the role

Galaxy is a global leader in digital assets and data center infrastructure, delivering solutions that accelerate progress in finance and artificial intelligence. We believe that blockchain and digital asset innovation will transform how value moves through the world - and we're building the products and services to make that future a reality. Our institutional digital assets platform spans trading, investment banking, asset management, staking, self-custody, and tokenization technology. We also invest in and operate cutting-edge data center infrastructure to power AI and high-performance computing, addressing the growing demand for scalable energy and compute in the U.S. We work at the intersection of finance and technology, helping institutions, startups, and developers navigate a digitally native economy. Led by CEO and Founder Michael Novogratz, our team blends deep crypto expertise with institutional experience and a shared commitment to shaping the future of Web3 and AI. Galaxy is headquartered in New York City, with offices across North America, Europe, the Middle East, and Asia. To learn more about our businesses and products, visit www.galaxy.com. What We Value: We are a diverse team of free thinkers, and fast movers united to help investors and creators energize the global economy. We are looking for individuals who thrive in a culture of builders and overachievers and embrace high performance, transparent feedback, and a mission-first approach. Our culture shapes our way of working and gets us where we want to be. Seek Excellence. Be Selective To Be Effective. Be Highly Aligned, Loosely Coupled. Disagree Transparently. Encourage Independent Decision-Making. Build Dream Teams.

Responsibilities

• Own and operate Ethereum validator infrastructure at scale - consensus clients (Lighthouse, Prysm, Teku, Nimbus), execution clients (Geth,Nethermind, Besu, Reth), and the tooling that keeps them healthy, diverse, and performant.
• Build and maintain the platform layer underneath validator operations: cluster lifecycle management, client upgrades, peer connectivity, fork tracking, and the observability stack that surfaces what matters.
• Manage slashing protection, key management, and signer infrastructure (Web3Signer, distributed validators, HSM/MPC-backed signing) at the level of rigor institutional staking demands.
• Harden shared platform infrastructure: EKS environments, GitOps pipelines,secrets management, networking, CI/CD, and the data plane.
• Partner closely with clients on integration work across staking, tokenization, DeFi, and validator engagements. Translate their constraints into platform requirements and ship the code that closes the gap.
• Generalize patterns from client work into reusable platform capabilities - so the next engagement doesn't start from zero.
• Operate production systems where the failure mode is institutional money and reputation. On-call, incident response, post mortems.
• Contribute to architecture decisions across modules - staking, MPC quorum coordination, policy engine, vaults.

Requirements

• As a Senior Platform Engineer, you'll own the infrastructure that runs institutional-grade blockchain operations - with particular depth in Ethereum validator infrastructure, consensus and execution client operations, and the platform layer that makes all of it reliable, observable, and scalable.
• Substantial experience building and operating distributed systems in production, ideally where reliability and security are first-class concerns.
• Deep comfort with the modern infrastructure stack: Kubernetes, AWS (or equivalent), infrastructure-as-code, GitOps, observability tooling, CI/CD.
• Strong software engineering fundamentals in at least one systems-capable language (Go, Rust, Python, TypeScript - what you've shipped matters more than which).
• Experience operating systems that hold or move value - custody, payments, exchanges, key management, HSMs, MPC - or a clear track record in adjacent high-stakes domains.
• Comfort being customer-facing. You'll sit with client engineers, understand their constraints, and ship into their environment. Strong written and verbal communication.
• High agency. We operate decentralized command - squad leads own within their mandate. You should be the kind of engineer who finds the work, not the kind who waits for it.
• For staff

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