Ephemera
Staff Smart Contracts Engineer
Ephemera
$235k - $275k
Remote (North/South America)
Solidity
EVM

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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