We are building decentralized perpetual markets for real-world assets, where correctness, capital efficiency, and security are non-negotiable. As a Senior Solidity Engineer, you will design and implement the core on-chain contracts that govern trading, collateral, positions, funding, and liquidations.
You will work closely with protocol researchers, backend engineers, risk teams, and external auditors to turn complex financial mechanics into safe, efficient, and maintainable smart contracts. This is a high-ownership role for an engineer who treats security as a product requirement—not an afterthought.
What you’ll do
- Architect, implement, and maintain EVM smart contracts for perpetual swap markets, including margining, position accounting, funding-rate settlement, PnL calculation, and liquidations.
- Design safe integrations with price oracles, index feeds, and risk parameters, with careful attention to staleness, manipulation resistance, and failure modes.
- Build comprehensive test suites using Foundry, including unit, integration, fuzz, invariant, and fork tests for critical protocol paths.
- Optimize gas consumption and contract efficiency while preserving clarity, safety margins, and auditability.
- Review protocol designs for economic risks, access-control weaknesses, reentrancy, oracle dependencies, rounding issues, and other common EVM attack vectors.
- Lead technical responses to findings from internal reviews, external audits, bug bounties, and incident investigations.
- Support secure deployment workflows, upgrade procedures, monitoring, and post-deployment incident response.
- Collaborate with product and engineering teams to ensure on-chain mechanics align with the intended trading experience and risk framework.
What we’re looking for
- 4+ years of professional software engineering experience, including at least 2 years writing production Solidity.
- Deep understanding of the EVM, Solidity security patterns, storage layout, access control, and common vulnerability classes.
- Experience shipping contracts to mainnet that custody or manage real user value.
- Strong command of Foundry or Hardhat, automated testing, static analysis, and secure deployment practices.
- Practical knowledge of DeFi primitives, including AMMs, lending markets, collateralized positions, derivatives, and oracle systems.
- Experience integrating production price feeds or oracle infrastructure.
- Excellent written communication and the ability to explain complex security and protocol tradeoffs clearly.
Nice to have
- Direct experience building perpetual futures, options, margin-trading, or other derivatives protocols.
- Familiarity with funding rates, liquidation engines, insurance funds, settlement flows, and position-risk calculations.
- Background in smart-contract auditing, formal verification, security research, or bug-bounty participation.
- Experience with upgradeable contract patterns, proxy architecture, and cross-chain messaging or bridging systems.
- Experience with Chainlink, Pyth, or custom oracle architectures.
- Familiarity with TypeScript-based tooling, deployment automation, and on-chain monitoring.
What success looks like
In your first six months, you’ll have contributed to the design and delivery of core perpetuals contracts, strengthened the protocol’s test and audit posture, and helped establish secure patterns for future markets and features.
Skills Required
- 4+ years of professional software engineering experience
- At least 2 years writing production Solidity
- Deep understanding of the EVM, Solidity security patterns, storage layout, access control, and common vulnerability classes
- Experience shipping mainnet contracts that custody or manage real user value
- Strong command of Foundry or Hardhat, automated testing, static analysis, and secure deployment practices
- Practical knowledge of DeFi primitives, including AMMs, lending markets, collateralized positions, derivatives, and oracle systems
- Experience integrating production price feeds or oracle infrastructure
- Excellent written communication and ability to explain complex security and protocol tradeoffs clearly
- Experience building perpetual futures, options, margin-trading, or other derivatives protocols
- Familiarity with funding rates, liquidation engines, insurance funds, settlement flows, and position-risk calculations
- Background in smart-contract auditing, formal verification, security research, or bug-bounty participation
- Experience with upgradeable contract patterns, proxy architecture, and cross-chain messaging or bridging systems
- Experience with Chainlink, Pyth, or custom oracle architectures
- Familiarity with TypeScript-based tooling, deployment automation, and on-chain monitoring
What We Do
Tangible Trade is a decentralized exchange (DEX) for synthetic perpetual swaps tied to Real World Assets (RWAs). It lets traders speculate on the real-time price movements of assets such as gold, silver, and oil without necessarily owning the underlying commodity, using perpetual futures-style contracts. The platform provides access to more than 150 price indexes, allowing users to trade exposure to a broad range of real-world market prices through on-chain synthetic instruments. Traders can use up to 100x leverage, making the platform geared toward active, high-risk derivatives trading rather than simple spot purchases of commodities. Tangible Trade emphasizes a high-frequency trading experience, with an index heartbeat of approximately 10 milliseconds, alongside a user interface designed for fast execution. It also highlights security and includes trader and creator reward programs.
Why Work With Us
Tangible Trade is unique because it combines real-world asset exposure with the speed and flexibility of decentralized perpetual derivatives. Rather than simply offering a way to buy commodities, the platform enables traders to speculate on the price of assets such as gold, silver, and oil through synthetic perpetual swaps.
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