
Staff Smart Contracts Engineer
Overview
Join Ephemera, Build the Future of Onchain Messaging. We are seeking an experienced Staff-level Smart Contracts Engineer to lead the design, development, and maintenance of mission-critical blockchain systems with a focus on tokenomics.
Job Description
Ephemera is a company focused on building the future of onchain messaging. We are looking for a Staff Smart Contracts Engineer to lead the design, development, and maintenance of blockchain systems with a focus on tokenomics.
Responsibilities
- - Writing and deploying smart contracts that govern the economics of the XMTP protocol
- - Working with the team to design novel incentive models to reward offchain node operators and collect messaging fees
- - Design & Implement Tokenomics Contracts: Lead the development of complex token contracts (ERC-20, staking, governance, vesting, distribution, liquidity management) tailored to evolving protocol needs
- - Upgradability & Governance: Architect upgradeable contracts (e.g., via OpenZeppelin proxy patterns) ensuring safe, controlled, and transparent change management
- - Security & Audits: Champion security best practices, lead internal reviews, coordinate with third-party auditors, and implement continuous monitoring of deployed contracts
- - Production-Grade Operations: Manage large-scale funds in production environments, ensuring availability, integrity, and protection of treasury and user assets
- - Cross-Functional Leadership: Partner with economics, product, and legal teams to translate tokenomics know-how into practical, deployable smart contract systems
- - Mentorship & Standards: Establish engineering best practices for smart contract development, mentor other engineers, and raise the bar for security, efficiency, and maintainability
Required Skills
- - 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
- - Security Focus: Prior experience working with formal verification, fuzzing, or static analysis tools
- - Contributions to audits, incident response, or security-critical systems
- - Leadership: Ability to balance long-term protocol sustainability with near-term delivery needs
Benefits
- - Competitive compensation package, Base + Equity
- - Remote-first environment with semi-yearly gatherings to connect IRL
- - Fully paid Medical, Dental, Vision insurance in the US
- - Parental Leave
- - IT Equipment and WFH setup
- - Monthly Wellness and Lifestyle stipend
- - Personal assistant
- - Unlimited time off
About the company
We are Ephemera, and this is why we are developing XMTP & Converse. Our mission is massive and we are building foundational technology for the next layer of the internet. A secure and decentralized messaging protocol that is designed to last forever, and an encrypted messenger that makes using crypto as simple as sending a message
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