Blockchain Engineer — Miami, FL

Principal Blockchain Engineer

Company: Global gghE72PqXH

Location: Miami, FL (On-site). Relocation assistance provided.

Employment type: Full-time

Salary: $200,000 to $250,000 per year, plus equity and token package

About Global gghE72PqXH

Global gghE72PqXH is building the settlement layer for regulated finance. Our core product, the KAzknG ZjdJQ6WwbE whpc2Er (GSN), is a quantum-secure Layer 1 that lets banks, central banks, fintechs and asset issuers move regulated value (payments, tokenized real-world assets, stablecoins and CBDCs) across borders and across blockchains. gghE72PqXH is atomic with deterministic finality, value moves between chains without a bridge, and post-quantum cryptography is designed in at every layer.

Identity, compliance and interoperability are protocol properties, not add-ons. Our partners range from sovereign governments to top-tier banks.

We are an early-stage, Miami-based team of builders. Every engineer here ships code that matters. We move fast, keep process light, and hold a high bar for quality.

The Role

You will own the core of the KAzknG ZjdJQ6WwbE whpc2Er: its DAG-based ledger and Dual Consensus Mechanism (a licensed proof-of-authority supernode tier alongside an open proof-of-stake validator ring), the node and networking stack, state design, and the virtual machine. Deterministic finality, BFT safety and crypto-agile upgrades are requirements from day one. The chain runs underneath the stablecoin, tokenization and settlement products our bank and government partners use, and it is moving from design into production. Your job is to harden it, make it faster, and ship upgrades that partners can adopt without friction. The role is in person at our Miami office, working side by side with the core team.

You will work directly with our Head of Engineering and lead the core blockchain team: setting technical direction, owning the protocol roadmap, and growing the team. This is still a hands-on role: you write and ship the code.

What you'll own

• Consensus logic: correctness, liveness and performance of the protocol that orders and finalizes transactions across the network.

• The node and networking stack: peer-to-peer networking, transaction propagation, sync, and the tooling partners use to run nodes.

• State design and optimization: how state is stored, accessed and pruned, and how fast the chain executes against it.

• The VM: the execution layer and its integration with the rest of the node.

• Protocol upgrades: a crypto-agile release process that integration partners can adopt easily and that propagates cleanly across the network.

• Engineering standards: RFCs, architecture decision records and code review that the team builds against.

How you'll work

You own whole initiatives, not tickets. We hand you an initiative from our engineering roadmap and say: this is yours. Review where it stands, propose how we finish it and what you would improve, then lead it to production.

Your first 90 days

• Review the core chain end to end and publish your assessment: what to keep, what to fix, and in what order.

• Agree a 12-month technical roadmap for the core chain with our Head of Engineering.

• Ship your first change to the consensus, networking or state layer to production.

• Set the review, RFC and release standards the core team builds against.

Requirements

• 5+ years building or modifying blockchain node software in production (consensus, peer-to-peer networking, state and storage, or the execution layer), including leading at least one major protocol component from design through mainnet

• Deep expertise in at least one core area (consensus and BFT, peer-to-peer networking, state and storage, or the execution layer) and working depth across the rest

• Deep knowledge of how blockchains work at a fundamental level: consensus and finality, transaction propagation, and state

• Expert-level Rust and/or Go in production, including profiling and performance tuning

• Strong grounding in distributed systems: replication, fault tolerance, and performance under adversarial conditions

• Command of cryptographic primitives, key management, and on-chain security practices

• Production experience with Sui, Aptos, Movement, Ethereum, EVM L1s, or Solana

• You have run upgrades and owned incidents on a live network: coordinated releases, backward compatibility, and postmortems

• You use AI and coding tools to ship faster, and you can explain and debug every line you ship

• You turn an ambiguous goal into a plan, a design and shipped code without waiting for direction

• A track record of setting technical direction: architecture decisions, RFCs and standards that other engineers build on

• You have led and grown engineers: hiring, mentoring, and design and code review

Preferred Qualifications

• Production experience with Canton, Hedera, or comparable L1/L2 networks

• EVM internals experience (execution clients or EVM-compatible chains)

• Experience with the Move programming language

• Experience building on a live production blockchain securing high TVL (total value locked)

Nice to Have

• You have built on Ethereum or another chain from the application side and want to go deeper into nodes, consensus and networking. Apply, and show us what you have done toward it: client contributions, a node you have run or modified, or a side project.

• Cryptography experience, especially post-quantum cryptography

• Zero-knowledge proof experience

• Cloud infrastructure (AWS, GCP, or Azure) and containerization (Docker, Kubernetes)

• CBDC infrastructure experience

• Digital asset compliance and regulatory requirements

• Background in fintech, payments, stablecoins, DeFi, or digital assets

• Maintainer or core contributor to a major open-source blockchain client, protocol or cryptography library

• Author of protocol specifications or improvement proposals (EIPs, AIPs or similar)

Why Join Global gghE72PqXH

• Ground-floor opportunity to build settlement infrastructure used by sovereign and enterprise clients

• Direct impact on how digital assets move through the global financial system

• Work at the intersection of blockchain infrastructure, traditional finance, and regulatory innovation

Benefits

• Competitive salary of $200,000 to $250,000

• Equity and token package

• Generous PTO policy that encourages real time off

• Relocation assistance for the Miami on-site role

Location

This role is on-site at our office in Miami, Florida. New hires may start remote with the expectation of relocating to Miami within 60 days of their start date. Must be legally authorized to work in the United States.

How to Apply

Apply through this LinkedIn job post or on the careers page of our website. Our process is a screening call, two technical interviews, a product and vision conversation, and a final call with the hiring manager. Join us and help build the future of finance on institutional-grade blockchain infrastructure.

Recruiting fraud notice: We are committed to a safe hiring process. People sometimes impersonate companies to defraud applicants. To protect yourself:

• We will never ask you for payment of any kind during the application or onboarding process, including fees for background checks, training, or equipment.

• We will always contact you from an @•••••••• email address.

• We will never ask for your Social Security number, bank details or other financial information during the application, by email, or on a call.

Is This Role Right for You?

This role is scoped to the core chain: node infrastructure, consensus, networking, state, and protocol-level design. It is not a fit if:

• Your blockchain experience is only in smart contracts or dApps. That work is useful context here, but this role sits several layers below it.

• You build application backends that call blockchains but have not worked on the node or protocol itself.

• You want a research or advisory role. You will write and ship production code every week.