[Hiring] Head of Trading Systems / Matching @Launch Legends

Role Description

We’re offering a unique opportunity to join Launch Legends (and Autheo) as a part-time Equity Cofounder. Founded in July 2021, Launch Legends is at the forefront of bridging Web3 blockchain technology with the next evolution of Web2 integration—bringing businesses on-chain through enterprise-grade solutions, DePIN innovations, and decentralized financial infrastructure.

Autheo is recruiting the person who will build the matcher. You will design and ship the trading system: central limit order book, matching, cancel/replace, self-trade prevention, time-in-force, funding ticks, the liquidation handoff, and the path from a matched trade to settlement on Autheo.

Qualifications

• Has shipped a live matching engine, or the core of one, on a venue with real orders.
• Can defend price-time priority, cancel/replace, self-trade prevention, and sequence gaps on a whiteboard without notes.
• Writes the hot path in Rust or Go. Solidity is acceptable for settlement, not for matching.
• Understands how a perp funding tick and a liquidation handoff sit next to the matcher.

Requirements

• Build the matching engine: price-time priority, or the priority model the GM signs, with deterministic behavior under cancel races.
• Specify and ship order types for v1: limit, market, post-only, IOC, GTC, and the cancel/replace path a market maker will actually use.
• Set the latency budget and measure it. Median, p99, and what happens when the book is under load.
• Implement self-trade prevention, sequence numbers, and a fairness rule you can explain to a market maker in one page.
• Own the funding tick, mark-price input, and the handoff into liquidation.
• Settle matched trades on Autheo.
• Design the state model so an infrastructure future, an RWA perp, and an agent-credit market can list without a rewrite.
• Publish a failure spec: sequencer stall, proof lag, validator halt, clock skew, duplicate cancel, crossed book.
• Instrument the book: order-ack time, cancel-ack time, match rate, reject reasons, and a replay log that can reconstruct a session.
• Hire or designate the first two engineers under this seat only after the spec is written.

Benefits

• This is a part-time equity/token-based cofounder opportunity.
• You will receive equity in Launch Legends, Autheo, and the WFO Creator Network.
• Token allocations in the Autheo blockchain.
• Salaried compensation is expected to begin within 4 to 5 months, following node, token sales, or funding.

First 90-Day Deliverables

• Matching spec: priority, order types, cancel/replace, self-trade prevention, sequence numbers, and the reject table.
• Latency budget with a measurement method, and a first number from a test harness.
• Settlement design against the chosen architecture, written to Autheo L1.
• Failure spec covering stall, proof lag, duplicate cancel, and crossed book.
• Replay log format sufficient to reconstruct one session trade for trade.
• A working testnet matcher on THEO spot and one perp, with the liquidation handoff stubbed to the risk seat’s interface.