Jesus Monroig

Worked on CryptoPets project, ensuring multi-chain coverage (EVM + Solana) and multiplatform delivery (web + mobile). Developed global network state management system for multi-chain (EVM and Solana), stabilizing application behavior during network switches. Web: React frontend. Mobile: React Native app. Backend: Node.js services and APIs connecting apps to chain RPCs, and contract interfaces. Smart contracts: Solidity on EVM; Rust on Solana (Anchor) for on-chain logic shared across networks.

Contributed to Router OGA’s Solana stack: Anchor programs (accounts, instructions, hooks) plus TypeScript services for quote → build → simulate → submit, wired into cross-chain routing with messaging/adapters and settlement handoffs for swap and bridge flows. Tests (unit/integration), CI, structured logging, and production debugging for Solana routes. Helped other teams integrate our swap and bridge APIs: fixed issues in production, agreed on how API behavior and versions would change, and updated docs and examples when Solana routing or endpoints changed.

Engineered Python miner and validator logic on Vanta Network: three-state (long/short/flat) signals across two market classes (crypto and forex). Extended mining and validation flows with subnet neurons and Bittensor runtime APIs, covering paired miner and validator paths in production. Implemented four core Subtensor (Substrate-based Bittensor L1) flows—neuron registration, staking, weights, and emissions—via the bittensor stack alongside Python miners and validators. Orchestrated four-stage data pipelines and service boundaries from quantitative signal strategies through miner configuration and signal generation to validator-side ingestion and storage. Improved pytest coverage and refactors in shared mining/validation modules; supported 3+ mainnet deployment cycles with automation scripts, performance tuning, and post-release validation and hotfixes.

Worked in SwapKit’s TypeScript monorepo on non-custodial swaps (20+ networks, large asset lists): package boundaries, stricter typing on quote paths, and client defaults that held up on edge-case routes. Integrated THORChain, Chainflip, and Maya behind the same routing/quote layer—decimals, fees, liquidity reads, THOR memos/inbound details—so partners used one interface instead of three incompatible formats. Ran Node.js REST for external teams alongside the SDK pieces they actually called: quotes, swap submission, provider/token discovery, status polling—plus request validation, rate limits, and errors that stayed stable across releases. Built transactions chain-by-chain with ethers.js and viem, pulled in UTXO/Cosmos helpers when the route needed them, and connected 30+ wallet/signer stacks so quote → sign → broadcast didn’t need a one-off per wallet. Optional AML/KYT: two compliance APIs, checked addresses before build/sign, and dropped out early on risky scores (sanctions/blocked regions) instead of pushing bad flows to broadcast.

Enhanced end-to-end user experience for DeFi presales by integrating KYC/AML verification, thereby reducing fraudulent activities by 15% and fostering a secure investment environment. Designed and deployed smart contracts on Ethereum-compatible chains: requirements, interfaces, access control, and mainnet rollout with monitoring. Built Solana programs in Rust with Anchor: accounts, instruction flows, and safer patterns for upgrades and testing. Coordinated CertiK audits: scope, responses, fixes, and re-review. Partnered with product on specs, testnet validation, and post-launch support for contracts and token economics.

Integrated dapps with Web3.js across multiple networks: RPC handling, chain switching, and transaction lifecycle. Shipped the React Native wallet for ICICB blockchain: key handling flows, network selection, signing UX, and release builds. Forked and customized DEX code: pools, swaps, routing, and admin or configuration surfaces for trading. Automated trading with configurable strategies, scheduling, and execution controls via custom bots. Shipped NFT marketplaces and casual NFT games with minting, metadata, and wallet flows for end users. Hardened builds and releases with testing and iteration from internal feedback.

Built full-stack features for a consumer debt-resolution product (clear payoff paths, lower monthly payments, multi-year plans). Shipped Node.js (Express/Koa) REST APIs on AWS EC2; used CloudWatch for PM2/app and system logs. Configured AWS Budgets and CloudWatch alarms for spend, outages, and CPU spikes. Managed MongoDB collections and migration scripts for releases. Launched landing pages and client dashboards in React and Next.js; integrated REST APIs and Redux for state. Consolidated legacy iOS/Android apps into a React Native app; published to the App Store and Google Play. Maintained CI/CD, signing certs/keystores, native modules where needed, and dependency upgrades.