// JONAH.LIN_

Lead Engineer / Engineering Manager

Web3 Product & Engineering Consultancy

Nov 2024 - Present

• ▶Lead engineer delivering production Web3 apps for large, consumer-scale crypto clients across DeFi, NFTs, and consumer crypto.
• ▶Served as technical lead on engineering initiatives for OpenSea and Plasma, supporting high-traffic, user-facing products.
• ▶Architected and shipped frontend platforms and Web3 integrations in close collaboration with client engineering and product teams.
• ▶Established frontend standards, reviewed architecture, mentored engineers, and owned technical delivery across multiple concurrent engagements.

Full-Stack Engineer

BTC-Focused AMM on Starknet (Ekubo Extension)

Jan 2025 - Present

• ▶Full-stack engineer on Spline, a Curve-like AMM for BTC-denominated assets on Starknet, partnering with a dedicated protocol lead.
• ▶Owned frontend architecture and transaction lifecycle for swaps, liquidity, and rewards across custom Cairo contracts extending Ekubo pools.
• ▶Implemented production-grade off-chain quoting using the Starknet Rust SDK, matching Cairo execution 1:1 to prevent pricing drift.
• ▶Designed and built a REST API for reward and incentive calculations, backed by SQL tables populated from Starknet indexer data.

Lead Frontend Engineer

Cross-Chain Swap Aggregator (pandora.fun)

Jan 2025 - Present

• ▶Frontend lead for a cross-chain swap and aggregation product on Abstract Network.
• ▶Owned frontend platform architecture, quote lifecycles, and transaction state management across multiple liquidity sources and bridges.
• ▶Implemented route comparison, fallback logic, and failure-safe UX for production-size swaps.
• ▶Partnered with protocol and infrastructure engineers to ensure deterministic execution and clear, user-safe transaction feedback.

Senior Frontend Engineer

Cross-Chain Bridge & Messaging

March 2023 - Nov 2024

• ▶Built and maintained high-throughput bridge interfaces used in production cross-chain transactions (<$70B).
• ▶Contributed to the open-source Synapse SDK, enabling programmatic quoting, routing, and execution.
• ▶Developed Cortex, an AI-powered, LLM-based trading agent within the Synapse ecosystem.
• ▶Integrated Synapse bridging into external products, handling chain abstraction, wallet state, and UX edge cases.

Senior Frontend Engineer

overlay.market

April 2021 - March 2023

• ▶Led frontend architecture for the trading interface and marketing site using React and TypeScript.
• ▶Architected and deployed the Overlay v1 Subgraph indexing core and periphery smart contracts.
• ▶Identified a critical vulnerability in Overlay v1-core prior to audit, potentially saving over $100k.
• ▶Led DAO governance interface development (PlanckCatDAO) on Arbitrum One.

Software Engineer / Engineering Lead

E-Commerce Women's Wellness

2020 - 2021

• ▶First engineering hire and third employee, helping build the engineering function from the ground up.
• ▶Led checkout, experimentation, and analytics initiatives improving conversion rates by 40%+.
• ▶Contributed to scaling topline revenue from $1.4M to $14M through rapid iteration and cross-functional execution.