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Join the vault team

Remote worldwide — HQ in San Francisco. Small team, production contracts, August audit on the calendar.

8 roles
Engineering Full-time

Senior Protocol Engineer

Zendarox Vault · Remote · Worldwide

Own core lending and router contracts through audit and launch. You will extend IsolatedMarket, YieldRouter, and vault accounting — with Foundry coverage as the definition of done.

  • 5+ years software engineering, 3+ years production Solidity
  • Shipped at least one DeFi protocol to mainnet or audited testnet
  • Comfortable with Foundry fuzz/invariant testing
  • Can read economic sim output and translate to parameter changes

Nice to have: Formal verification exposure · Lending protocol experience · Rust or TypeScript for tooling

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Security Full-time

Smart Contract Security Engineer

Security & Vault · Remote · Worldwide

Split time between client audits and vault hardening ahead of August. Manual review, fuzz harness design, and remediation re-review — not checkbox scanning.

  • 3+ years smart contract security or equivalent audit track record
  • Foundry, Slither, and invariant design in daily workflow
  • Clear written findings with severity and exploit path
  • Comfortable presenting to client engineering teams

Nice to have: Certora or Halmos · Lending/liquidation expertise · Public audit reports

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Engineering Full-time

DeFi Backend Engineer

Platform · Remote · Worldwide

Build the indexer, simulation API, and protocol dashboard that powers internal QA and external reviewer onboarding. Node/TypeScript, Fastify, clean contract event schemas.

  • 4+ years backend engineering
  • TypeScript in production; comfortable with ethers/viem
  • Designed APIs consumed by frontends or other services
  • Interest in DeFi metrics and on-chain data pipelines

Nice to have: The Graph or custom indexers · Timescale/Postgres for metrics · Docker CI pipelines

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Research Full-time

Protocol Economist

Research & Vault · Remote · Worldwide

Own scenario design and parameter recommendations for Zendarox Vault and client tokenomics engagements. Turn simulation output into governance-ready proposals.

  • Quantitative background — economics, finance, or applied math
  • Built or maintained DeFi or tradfi risk/simulation models
  • Comfortable reading Solidity interfaces and audit reports
  • Clear written communication for technical and non-technical stakeholders

Nice to have: CadCAD or custom Monte Carlo stacks · PhD or published risk research · DAO governance experience

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Engineering Full-time

Client Protocol Engineer

Client Delivery · Remote · Worldwide

Lead production builds for external clients — Arc Yield and incoming vault/lending engagements. Architecture through deployment planning with direct customer contact.

  • 4+ years engineering with 2+ years Solidity in production
  • Delivered scoped protocol work under fixed timelines
  • Experience writing architecture docs and running client reviews
  • Foundry testing as daily practice

Nice to have: ERC-4626 vault experience · Audit coordination · Post-deploy monitoring setup

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Engineering Full-time

Frontend Engineer — Protocol UI

Platform · Remote · Worldwide

Build protocol dashboards, client admin UIs, and the vault lab console. TypeScript, accessible components, wallet connect — no crypto casino aesthetics.

  • 3+ years frontend engineering
  • TypeScript + modern CSS; comfortable with design systems
  • Integrated wallet flows (wagmi/viem or equivalent)
  • Can work from API specs and Figma-level wireframes

Nice to have: Data visualization (charts, health metrics) · Fastify or REST consumers · Prior DeFi UI work

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Security Full-time

Smart Contract Audit Analyst

Security · Remote · Worldwide

Support lead auditors on client engagements — triage, PoC development, report drafting. Path to lead auditor for strong performers.

  • 2+ years software security or smart contract development
  • Foundry test writing and basic fuzz concepts
  • Ability to reproduce reported issues with minimal guidance
  • Strong written English for finding descriptions

Nice to have: Public CTF track record · Solidity under audit before · Python for analysis scripts

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Operations Contract · 20 hrs/week

Technical Recruiting Partner

Operations · Remote · Worldwide

Source senior protocol and security engineers for a small SF studio. You understand GitHub portfolios, not keyword bingo.

  • 3+ years technical recruiting in software or crypto
  • Proven pipeline for senior IC engineers
  • Comfortable screening against public repos and audit history
  • Async-friendly communication — we are a small founding team

Nice to have: Prior DeFi startup recruiting · SF Bay Area network · Experience hiring security specialists

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