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Rusty Lopez
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Rusty Lopez
Navigate · Est. 2026N of 08
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Abu Dhabi · UAEGMT +4
Rusty Lopez Logo
Rusty Lopez

Full Stack Engineer building scalable systems and digital products. Based in Abu Dhabi, UAE.

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    Selected Work

    Systems I've Built

    End-to-end systems I've designed, shipped, and own in production — the decisions behind them, what broke, and what changed as a result.

    Cloud InfrastructureProduction Recovery / Cloud Resilience

    Keeping a Core Business Platform Online During Regional Cloud Instability

    ~3m

    Regional cloud instability created serious risk for core platform availability, storage access, and day-to-day business operations. I helped move and stabilise critical infrastructure across AWS regions, using Frankfurt as the recovery target while validating EC2, RDS, S3, VPC, DNS, AWS DataSync, and multi-AZ resilience to keep production workflows usable during the disruption.

    Regional failover completedLarge S3 assets migrated with DataSyncProduction CRM/ERP stabilisedLatency reduced from 3m to 100ms
    AWSEC2RDS+4S3Route 53
    Read case study
    API / BackendCore CRM/ERP Engineer / Full Stack Owner

    Building a Listing Publishing Engine for a Real Estate CRM/ERP Platform

    ~9m

    “Click publish” sounds simple, but the real work happens inside the CRM/ERP. I improved the engine that validates listings, prepares publishing data, and syncs them to websites, PWA experiences, and enterprise APIs.

    CRM/ERP publishing flowWebsite/PWA listing syncSafer validationBetter admin visibility
    LaravelAngularMySQL+2Enterprise APIsAWS
    Read case study
    AI SystemsFull Stack Owner / System Design

    AI-Driven Lead Scoring & Prioritisation System

    ~2m

    Sales teams lacked a reliable way to prioritise leads, leading to inconsistent follow-ups and missed opportunities. There was no clear signal to identify which leads required immediate attention.

    Improved lead prioritisationFaster response to high-value leadsReduced manual evaluationMore consistent sales workflow
    LaravelMySQLREST APIs+2ClaudeAI / LLMAngular
    Read case study
    API / BackendFull Stack Owner / Sole Engineer

    High-Load CRM Performance Optimisation & Scaling

    ~2m

    The CRM began slowing down as data volume and usage increased, affecting core workflows and user productivity. Key operations such as loading lists, filtering data, and processing actions became noticeably delayed.

    Reduced response timesImproved system stabilityBetter user experience
    LaravelAngularMySQL+2AWSApache
    Read case study
    MobileFull Stack Owner / Sole Engineer

    Progressive Web App for Restricted Mobile Deployment

    ~2m

    The business needed a mobile-accessible system, but distributing through app stores was not viable due to operational and compliance constraints. Users still required a fast, app-like experience on their devices without friction.

    No app store dependencyFaster deployment cyclesImproved mobile accessibility
    AngularPWAService Workers+3LaravelNginx
    Read case study