The Up Next Company

Staff Smart Contracts Engineer

The Up Next Company

full-time

Posted on:

Origin:  • 🏈 Anywhere in North America

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Salary

💰 $235,000 - $275,000 per year

Job Level

Lead

Tech Stack

Node.jsOpen SourceSolidity

About the role

  • Join Ephemera, Build the Future of Onchain Messaging Lead design, development, and maintenance of mission-critical blockchain systems focused on tokenomics Own end-to-end lifecycle of smart contracts: architecture, implementation, audits, deployment, upgrades Write and deploy smart contracts governing the economics of the XMTP protocol Design novel incentive models to reward offchain node operators and collect messaging fees Lead development of complex token contracts: ERC-20, staking, governance, vesting, distribution, liquidity management Architect upgradeable contracts using proxy patterns for safe, controlled change management Champion security best practices, lead internal reviews, coordinate third-party audits, implement continuous monitoring Manage large-scale funds in production ensuring availability, integrity, and protection of treasury and user assets Partner with economics, product, and legal to translate tokenomics into deployable contracts Establish engineering best practices, mentor engineers, raise the bar for security, efficiency, maintainability

Requirements

  • Minimum of 7+ years of professional experience as a software engineer, staff level Extensive experience designing, building, and maintaining cryptoeconomic systems Architected and designed complex protocols onchain Experience working with auditors to find vulnerabilities Writing well-tested Solidity code 5+ years of software engineering experience, with at least 3 years focused on Solidity / EVM-based smart contracts Proven track record of deploying and maintaining production-grade contracts managing significant funds Deep familiarity with tokenomics mechanisms: staking, bonding curves, vesting, emissions schedules, treasury management Strong understanding of EVM internals, gas optimization, and advanced contract design patterns Hands-on experience with upgradable contracts, proxy patterns, and governance-controlled upgrade systems Prior experience working with formal verification, fuzzing, or static analysis tools Contributions to audits, incident response, or security-critical systems Ability to balance long-term protocol sustainability with near-term delivery needs