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Emmanuel Luján

Hi, I'm Emmanuel Luján

Clean Architecture. Solid Code.

Software Developer & Consultant specializing in high-impact digital commerce, headless systems (SAP Commerce, MedusaJS, commercetools) and mission-critical distributed architectures.

Techs

Commerce Tools & Platforms

Frameworks and Libraries

Languages

Databases

Tools

Featured Projects

Alkosto

Alkosto

  • Angular
  • TypeScript
  • Java
  • JSP
  • SAP Commerce Cloud
Continuous engineering and platform evolution for Alkosto's enterprise retail ecosystem on SAP Commerce Cloud. Implementation of mission-critical business logic, storefront optimization, and high-volume transactional flows.
MPS

MPS

  • NextJs
  • TypeScript
  • MedusaJS
Headless commerce architecture and integration combining Medusa and Next.js for MPS. Multi-channel deployment (B2B & B2C) featuring a bespoke administrative console, along with advanced catalog and inventory management.
Farmacia San Pablo: Heuristic Analysis

Farmacia San Pablo: Heuristic Analysis

  • Angular
  • TypeScript
  • Java
  • SAP Commerce Cloud
Development of advanced telemetry mechanisms and user-behavior metrics capture for heuristic evaluation and UX/performance optimization on Farmacia San Pablo's SAP Commerce Cloud platform.
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Work Experience

Keyrus AI

Guadalajara, Jalisco, Mexico (Remote)•Jun 2021 — Present

  1. Confirmed Consultant

    Current

    Specialized technical consulting and leadership in enterprise digital commerce architectures (MACH, Headless, and Composable). Translating complex business goals into resilient, highly scalable technical specifications.

    • Architectural definition and technical governance for decoupled API-first platforms (commercetools, MedusaJS, SAP Commerce Cloud).
    • Technical audits focusing on throughput, transactional resilience, and performance optimization for high-traffic retail and B2B platforms.
    • Direct client collaboration and technical steering with engineering teams for solution innovation and mission-critical initiatives.
    Related projects:
    AlkostoMPSCoflex en Línea
    CommerctoolsNextJsMedusaJSTypeScript

  2. Commerce Developer

    Full-stack development of B2B and B2C transactional commerce platforms. Engineering robust, scalable solutions, decoupled storefronts, and integrating mission-critical services.

    • Integrated third-party enterprise services: payment gateways, logistics providers, ERPs, and promotion engines.
    • Engineered web performance optimizations through caching strategies, code tuning, and Core Web Vitals enhancements.
    • Delivered responsive, high-speed user interfaces (Next.js, Qwik, Angular) alongside advanced production debugging.
    Related projects:
    Farmacia San Pablo: Heuristic AnalysisRotoplas: B2C SupportRotoplas: B2B Support
    SAP Commerce CloudCommerctoolsNextJsAngularTypeScriptJava

  3. Junior Commerce Developer

    Software engineering for enterprise eCommerce platforms (SAP Commerce Cloud and Salesforce). Evolutionary maintenance, live production support, and custom feature module delivery.

    • Diagnosed and resolved critical production incidents within rigorous enterprise SLAs.
    • Engineered UI components with Angular/TypeScript and implemented backend service customizations in Java/Spring.
    • Implemented personalization features and custom commercial workflows aimed at driving conversion rates.
    Related projects:
    Capa de OzonoOffice Depot
    SAP Commerce CloudSalesforceJavaAngularTypeScript

  4. Developer Intern

    Intensive technical immersion into enterprise eCommerce ecosystems. Accelerated hands-on training on industry-standard platforms, clean architecture principles, and agile methodologies.

    • Comprehensive training on enterprise eCommerce technologies (Hybris / SAP Commerce Cloud, Salesforce) and Java backend development.
    • Assisted senior developers with platform customizations, code reviews, quality assurance, and system debugging.
    • Active participation in solution design sessions, sprint retrospectives, and workflow technical documentation.
    SAP Commerce CloudSalesforceJavaJsHtmlCss

Certificates & Credentials

Flutter & Dart
UdemyFlutter & Dart

Flutter & Dart - The Complete Guide

Instructor:Maximilian Schwarzmüller

Cross-platform mobile engineering for iOS and Android using Flutter and Dart, covering custom widgets, state management, native device APIs, animations, and HTTP networking.

See certificate
Angular
UdemyAngular

Angular - The Complete Guide

Instructor:Maximilian Schwarzmüller

Modern Angular engineering, including Signals, Standalone Components, Reactive Forms, Routing, HTTP services, RxJS, NgRx state management, and production-ready deployments.

See certificate
React Router
DevTallesReact Router

React Router

Instructor:Fernando Herrera

Learn how to work with React Router either as a library for SPA projects or work with it as a Framework and get the most out of server actions, route modules, pre-rendering and much more.

See certificate
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About Me

I'm Emmanuel Luján Ríos, a Software Developer and Consultant based in Guadalajara, México. I hold a degree in Computer Systems Engineering from Instituto Tecnológico Superior Zacatecas Sur.

My practice focuses on critical transactional infrastructure, decoupled enterprise e-commerce (SAP Commerce, MedusaJS, commercetools), and resilient full-stack systems where uptime, scalability, and consistency are non-negotiable.

My engineering philosophy is built on structural solidity and zero shortcuts: clean architecture, SOLID principles, API-first headless architectures, and modular code designed to handle high-concurrency workloads reliably.

Emmanuel Luján
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