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Gustavo Martín

@gustavomartin

Smart contract engineer at Roofcast building a solvency-checked prediction market with gasless trading and 591+ tests.

Spain
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At Roofcast, I’m the lead Solidity developer on a real-estate prediction market, building its CPMM, Gnosis CTF settlement, and atomic LP/swap logic. The protocol uses EIP-7702 delegated accounts for gasless one-click trading, with solvency checks after every state change.

On MoveX, I implemented EIP-712 signed gasless intents for a volatility derivatives DEX, where gas is paid only when a trade settles. I also worked on direction-neutral trading primitives and a settlement engine with strictly typed state transitions designed to keep the protocol solvent.

At Dexynth, I designed and built custom oracles so the multichain synthetics protocol could launch on emerging EVM L2 networks. I also developed and upgraded its contracts, including a multi-level real-yield staking system, and built its API, WebSocket, and microservices.

Before DeFi, I developed PLC and SCADA control software at CERN for cooling and ventilation systems, and co-founded Localización y Control de Flotas, where I led programming, integration, and R&D. I approach protocol work by specifying invariants first, then testing against them with stateful fuzzing and invariant testing in Foundry.

Experience

Work history, roles, and key accomplishments

RO
Current

Lead Smart Contract Engineer & Protocol Architect

Roofcast

Feb 2026 - Present (8 months)

Lead Solidity developer for a real-estate prediction market protocol, implementing event-driven design and EIP-7702 delegated accounts.

FF

Customer Integration Engineer

fija Finance

Mar 2025 - Oct 2025 (7 months)

Integrated ERC-4626 vault strategies into institutional client systems and built a market-making bot for centralized exchange liquidity.

BF

Blockchain Developer

BeGlobal Finance

Jul 2022 - Dec 2022 (5 months)

Deployed and tested Compound-forked lending markets with custom Chainlink oracles and wrote liquidation contracts with Chainlink Keepers.

LF

Co-founder & Technical Director

Localización y Control de Flotas

May 2010 - Jun 2019 (9 years 1 month)

Led programming, integration, and R&D for vehicle and machinery location, monitoring, and remote security.

Education

Degrees, certifications, and relevant coursework

IC

IES Juan Antonio Castro

Higher Technician Diploma, Industrial Automation and Robotics

2017 - 2019

Grade: 9.79/10, Highest Honours (Matrícula de Honor)

Activities and societies: Final project: ARIBot, a self-balancing autonomous transport robot integrated with the Siemens S7 PLC of a Festo cell.

Higher Technician Diploma in Industrial Automation and Robotics with Highest Honours (Matrícula de Honor) and a grade of 9.79/10. Final project: ARIBot, a self-balancing autonomous transport robot integrated with the Siemens S7 PLC of a Festo cell.

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