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Mateusz Nguyen

About

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Warsaw, Masovian Voivodeship, Poland
Contact Mateusz regarding: 
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Full-time jobs
Starting at USD90k/year

Timeline

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Job
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Education

Résumé

Jobs verified_user 0% verified
  • P
    Senior Software Engineer
    ProtecWise Inc
    Aug 2023 - Current (3 years 3 months)
    • Orchestrated implementation of the Feed, Front Page, and Symbol Intelligence surfaces in React and TypeScript,
    delivering 6+ production pages linked to backend projections and improving time-to-interactive by 37%.
    • Integrated REST, GraphQL, and WebSocket endpoints to wire real-time RS-weighted sentiment streams and engagement
    events, reducing perceived latency for live feeds from 1.2s to 320ms for 200k daily users.
    • Implemented a TradingView-compatible chart widget using UDF adapter endpoints (/tv/symbols, /tv/search, /tv/history,
    /tv/quotes), enabling 99th percentile history queries under 450ms for symbol lookups.
    • Delivered UI integration for event-sourced Allocation Domain projections (frontpage_ranking
  • Zego
    Full Stack Engineer
    Zego
    May 2019 - Apr 2023 (4 years)
    • Coordinated API contract design with backend teams for Symbol Intelligence endpoints (GET /symbols/search,
    /symbols/{symbol}/summary, /symbols/{symbol}/fp-content) and reduced integration defects by 68% in pilot rollout.
    • Championed accessibility and responsive rendering for live market data, achieving 92% Lighthouse score for mobile and
    stable rendering for 10+ simultaneous real-time content rails.
    • Designed and built modular React components in TypeScript for dashboards and feeds, shipping 18 reusable components
    that reduced new page build time by 55% across product teams.
    • Integrated GraphQL and REST data layers with client-side caching strategies using React Query and normalized caching,
    lowering
  • V
    Full Stack Developer
    VentureCraft
    Dec 2017 - May 2019 (1 year 6 months)
    • Built full-stack features using React frontends and Node.js backends in TypeScript, delivering payment and analytics pages
    used by 30k monthly active accounts.
    • Connected frontend surfaces to REST and WebSocket services for near-real-time balance and trading updates, achieving
    sub-500ms UI refresh for high-priority events.
    • Implemented charting using D3 for custom time-series visualizations and integrated a TradingView-style adapter for
    consolidated market feeds across 50 symbols.
    • Developed search endpoints and client-side aggregation to support combined symbol and sector discovery, increasing
    relevant search click-through rate by 21%.
    • Built PostgreSQL schemas and optimized queries for ranking
  • Grab
    Frontend Developer
    Grab
    Nov 2016 - Nov 2017 (1 year 1 month)
    • Developed interactive UI components for customer-facing pages using JavaScript, HTML5, and CSS3, supporting a 4x
    growth in mobile traffic during peak campaigns.
    • Implemented API integrations with RESTful services and WebSocket event streams to show live pricing and order updates,
    lowering perceived latency by 33%.
    • Created responsive data tables and mini-charts for summary dashboards using Recharts, improving manager decision time
    by 26% per daily report.
    • Optimized asset delivery and critical rendering path, reducing bundle size by 38% and improving mobile First Contentful
    Paint by 300ms.
    • Instrumented frontend metrics and error tracking with Sentry and custom telemetry, surfacing top 10 client
Education verified_user 0% verified
  • N
    Bachelor of Computer Science
    National University of Vietnam
    Jan 2012 - Jan 2016 (4 years 1 month)