Mantle Squad US – Marketing & Growth

Who We Are: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.

Who You Are:

You'll own the contract and program layer of systems that real institutions depend on — tokenized funds, staking and validator infrastructure, collateral and liquidity products, and the compliance primitives that make them usable inside regulated workflows.

This is a builder role with a research dimension. You'll move between protocol-level design work and shipping production contracts that clear institutional audit, security, and operational bars. You own your work end-to-end: spec, contracts, tests, deployment tooling, monitoring, runbooks, and the off-chain integrations that make contracts operable in production.

What You’ll Do:

Design and ship on-chain systems

• Design, implement, and ship smart contracts and on-chain programs across EVM and Solana for tokenized funds, staking systems, and capital markets primitives.
• Own contract-level architecture decisions: upgrade paths, access control, transfer restrictions, oracle integration, fee and accounting logic, and failure modes.
• Work end-to-end on each system — from spec through to deployment tooling, monitoring, runbooks, and the off-chain integrations that make contracts operable in production.

Build for regulation institutions

• Build the compliance and control surfaces that let regulated institutions actually use these systems — KYC/AML enforcement at the protocol layer, role-based access, investor-class restrictions, and auditable mint/burn/transfer flows.
• Translate ambiguous product or regulatory requirements into concrete contract designs without heavy process.

Own security and rigor

• Drive the security posture of what you ship — threat modelling, invariant and fuzz testing, internal review, and working with external auditors.
• Contribute to technical research that shapes the next generation of Edge's on-chain products

What We’re Looking For:

• 4+ years of production engineering experience, with substantial time spent shipping smart contracts or on-chain programs that handle real value.
• Deep fluency in at least one of Solidity (Foundry/Hardhat, EVM internals, upgrade patterns) or Solana programs (Rust, Anchor, Token-2022, SPL); credible working knowledge of the other, or a clear track record of picking up new chain ecosystems quickly.
• Strong instincts for smart contract security — you've thought hard about reentrancy, oracle manipulation, access control, and the failure modes specific to your stack, and you write code that reflects it.
• Comfort owning systems end-to-end, including the off-chain pieces that production contracts depend on.
• Ability to operate in a high-autonomy environment.
• High agency, low ego. You own your work end-to-end and hold yourself accountable for quality.

Bonus Points:

• Experience with tokenized assets, regulated financial products, or institutional DeFi.
• Familiarity with tokenized vault standards (ERC-4626, ERC-7540 for asynchronous deposit/redemption flows) and Token-2022 extensions such as transfer hooks.
• Background in capital markets, custody, or staking infrastructure.
• Prior work that has been through formal audit.

What We Offer:

• Competitive base salary and discretionary bonus
• Hybrid/Flexible Working Arrangements 
• Flexible Time Off (paid)
• 3% 401(k) company contribution
• Company-paid health and protective benefits for employees, partners, and other dependents
• Generous paid Parental Leave
• Competitive family planning benefits for US employees 
• Opportunities to learn about the Crypto industry
• Smart, entrepreneurial, and fun colleagues
• Free daily snacks and weekly breakfasts/lunches 
• Employee Resource Groups
• Free coaching and counseling sessions through Headspace

Apply now and join us on our mission to engineer a new economic paradigm.

The base salary ranges included below will be commensurate with candidate experience, expertise and local market. Final offer amounts are determined by multiple factors, including candidate experience and expertise. At Galaxy, we maintain a total compensation philosophy which consists of a competitive base salary, annual bonus, and equity incentives.

Base Salary Range$200,000—$250,000 USD

Galaxy respects diversity and seeks to provide equal employment opportunities to all employees and job applicants for employment without regard to actual or perceived age, race, color, creed, religion, sex or gender (including pregnancy, childbirth, lactation and related medical conditions), gender identity or gender expression (including transgender status), sexual orientation, marital or partnership or caregiver status, ancestry, national origin, citizenship status, disability, military or veteran status, protected medical condition as defined by applicable state or local law, genetic information or predisposing genetic characteristic, or other characteristic protected by applicable federal, state, or local laws and ordinances.

We will endeavor to make a reasonable accommodation to the known limitations of a qualified applicant with a disability unless the accommodation would impose an undue hardship on the operation of our business. If you believe you require such assistance to complete the application process or to participate in an interview, please contact

Listed in: Web3 Jobs, Full Time Web3 Jobs, Contract Crypto Jobs, Smart Contract Crypto Jobs, Research Web3 Jobs, Developer Crypto Jobs.