A
Alan Gabriel Medina Islas
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Ecatepec de Morelos, Estado de México, Mexico
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Senior Software EngineerAlluxiMar 2023 - Current (3 years 3 months)• Led the full-stack development of a decentralized exchange (DEX) platform using React.js, Node.js, and TypeScript, handling everything from order-book rendering to trade execution services. • Integrated Web3.js and Ethers.js to connect the front-end with Ethereum-based smart contracts, managing wallet connections, transaction submission, and event listening for order fills. • Built a real-time price feed system that aggregated data from multiple liquidity sources, dealing with latency spikes and stale data by implementing a fallback chain and health-check retries. • Rewrote the backend matching engine to handle concurrent orders without deadlocks, moving from a naive lock-based approach to an event-driven queue backed by Redis streams. •- Full Stack DeveloperSOFTTEKJul 2018 - Feb 2023 (4 years 8 months)• Developed and maintained a suite of financial dashboards for a large banking client, using Angular for the front-end and Node.js with Express for the API layer. • Integrated real-time market data feeds into the dashboards, handling disconnections and data gaps by implementing a heartbeat mechanism and automatic reconnection logic. • Optimized slow SQL queries in PostgreSQL 12 that were causing timeouts in the trade reporting module, reducing query execution time by rewriting joins and adding partial indexes. • Wrote migration scripts to move legacy data from an old Oracle system into the new PostgreSQL schema, dealing with encoding mismatches and orphaned records without data loss. • Participated in on-call rotations for production incide
- Full Stack DeveloperElaniinAug 2014 - Jul 2018 (4 years)• Built an internal order-management system for a logistics company using React.js and Node.js, replacing a spreadsheet-based workflow that was prone to data entry errors. • Designed a RESTful API to synchronize order statuses between the web application and a legacy ERP system, handling conflicts when both systems updated the same record simultaneously. • Refactored the front-end state management from scattered local state to a centralized Redux store, making the codebase easier to debug and reducing the number of UI bugs related to stale data. • Set up a basic CI pipeline with Jenkins to run linting and unit tests on every pull request, raising the code quality bar across the team. • Worked directly with the client to gather feedback on t
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- Bachelor's Degree in Computer ScienceUniversidad Tecnológica de la MixtecaJan 2010 - Jan 2014 (4 years 1 month)