decircle

PvP Trade – Smart Contract Engineer

decircle

full-time

Posted on:

Location Type: Remote

Location: New York • United States

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Job Level

Lead

Tech Stack

Solidity

About the role

  • Own protocol development on HyperEVM, including the design, implementation, and deployment of production-grade smart contracts powering positions, collateral management, fee routing, and settlement flows
  • Architect DeFi primitives end-to-end, such as staking and locking mechanisms, liquidity and fee systems, vaults, and risk controls (circuit breakers, caps, kill-switches, guardians), with explicit gas and latency budgets
  • Design and implement safe upgradeability strategies (UUPS, transparent, beacon), including storage-layout testing and invariant preservation through migrations and staged rollouts
  • Lead security and correctness efforts by modeling MEV and price-manipulation threats, writing invariants and fuzz tests (Foundry, Echidna), integrating static analysis tools (Slither), managing audit scope and responses, and owning post-mortems
  • Drive operational excellence by defining on-chain SLOs, emitting analytics-ready events, building monitoring and alerting systems, and owning incident response, rollback, and patch runbooks

Requirements

  • Strong experience designing and optimizing Solidity smart contracts
  • Deep understanding of DeFi protocol design, primitives, and risk mechanisms
  • Experience with smart-contract upgradeability patterns and safe contract migrations
  • Proven experience with smart contract security and threat modeling, including MEV and price-manipulation vectors
  • Hands-on experience with invariant testing, fuzzing, and static analysis tools
  • Ability to design and reason about distributed backend systems at trading-scale throughput
  • Ownership mindset when operating production systems, including monitoring and incident response
Benefits
  • Remote work options
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
Soliditysmart contractsDeFi protocol designupgradeability patternsthreat modelinginvariant testingfuzz testingstatic analysisdistributed backend systemsincident response
Soft Skills
ownership mindsetleadershipoperational excellenceproblem-solvingcommunication