Software Engineer III
Walmart Chile - Global Tech
Overview
As Software Engineer III at Walmart Chile, I work on the customer journey team responsible for the complete shopping experience from homepage navigation through cart management (pre-checkout). My role involves full-stack development in a shared NX monorepo serving multiple international markets.
The primary focus is migrating legacy Lider.cl features to Walmart.com standards while maintaining multi-tenant compatibility across Chilean, Mexican, Canadian, and US markets. This requires careful coordination with international teams and comprehensive testing to ensure features work seamlessly across all regions.
Current Stage: Successfully migrated majority of legacy features. Chilean team is positioned to join international development workflows directly, working in unified cross-market teams for future feature development.
Featured Project: Quantum Metric Integration
Quantum Metric Integration - Chilean Market
May 2025Led end-to-end integration of Quantum Metric analytics platform for Chilean market scope
The Challenge
- ▸No prior documentation or internal support available
- ▸Required coordination with international teams across 3 markets
- ▸Complex integration with existing micro-frontend architecture
My Approach
- 1.Proactively contacted Quantum Metric integration leads from MX, CA, and US teams
- 2.Studied their implementations and adapted patterns to Chilean market requirements
- 3.Submitted code for international review and incorporated feedback
- 4.Documented implementation process for future reference
Business Impact
- ✓Enabled marketing team to analyze user behavior and optimize campaigns
- ✓Provided UX team with session replay and heatmap data for design improvements
- ✓Identified web conflicts and bottlenecks contributing to cart abandonment
- ✓Positioned Chilean team as key contributor to international analytics strategy
Technical Implementation
Integrated Quantum Metric's JavaScript SDK into Next.js micro-frontend architecture, ensuring proper initialization across module-federated components. Implemented session tracking, event capturing, and custom data layer integration while maintaining performance and respecting user privacy settings.
Key Features:
- • Session replay integration
- • Heatmap data collection
- • Custom event tracking
- • Error monitoring
Technical Considerations:
- • Module federation compatibility
- • Performance optimization
- • Privacy compliance
- • Multi-tenant configuration
Core Responsibilities
User Journey Development
Full-stack development for complete customer journey from homepage navigation, product browsing, adding to cart - everything before checkout (handled by separate team)
Legacy Migration
Migrating legacy Lider.cl features and business logic to Walmart.com standards, ensuring consistency with international markets while maintaining Chilean market requirements
Analytics Integration Leadership
Led Quantum Metric integration for Chilean market, coordinating with international stakeholders and enabling data-driven decision making for marketing and UX teams
Multi-Tenant Architecture
Working in shared NX monorepo with module federation, ensuring features work seamlessly across CL, MX, CA, and US markets without breaking existing functionality
Release Management & Production Deployments
Production Release Responsibilities
Team rotates weekly production deployment responsibilities for Chilean market web application. Typically perform production releases once per month as part of the rotation, managing end-to-end deployment process including documentation, security approvals, and rollback procedures.
Pre-Deployment Process
- ▸Change Documentation: Complete deployment documentation detailing all changes, version numbers, affected features, and impacted systems
- ▸Evidence Collection: Gather test results, code review approvals, and QA sign-offs demonstrating change validation
- ▸Team Coordination: Document all developers and teams involved in the changes being deployed
- ▸Approval Workflow: Request and obtain approvals from security team and architecture leads before proceeding
Deployment Execution
- ▸Production Deployment: Execute weekly production releases following approved deployment runbooks and procedures
- ▸Health Monitoring: Verify successful deployment through health checks and monitoring dashboards
- ▸Performance Validation: Monitor key metrics (page load times, error rates, user sessions) to ensure production stability
- ▸Rollback Execution: Perform immediate rollback procedures when issues are detected, minimizing user impact and downtime
Post-Deployment Activities
- ▸Production Verification: Validate all deployed features functioning correctly in production environment
- ▸Incident Management: Monitor for production incidents and coordinate with teams for rapid resolution if issues arise
- ▸Stakeholder Communication: Notify relevant teams and stakeholders of successful deployment or any issues encountered
Skills Demonstrated
✓ Production release management
✓ Change documentation & compliance
✓ Security approval workflows
✓ Stakeholder coordination
✓ Deployment automation & CI/CD
✓ Production monitoring & observability
✓ Incident response & rollback procedures
✓ Risk management & mitigation
Key Achievements
- ▸Led Quantum Metric analytics integration for Chilean market without prior documentation, coordinating with international teams (MX, CA, US) for code review and approval
- ▸Manage monthly production deployments for Chilean market web application, handling documentation, security approvals, deployment execution, and rollback procedures as part of team rotation
- ▸Enabled marketing, UX, and product teams to analyze user behavior and web conflicts, contributing to reduced cart abandonment and increased conversion rates
- ▸Migrated legacy Lider.cl features to Walmart.com standards across full-stack (frontend + backend)
- ▸Maintained shared codebase across 4 international markets (CL, MX, CA, US) ensuring multi-tenant compatibility
- ▸Developed and tested features for complete user journey: homepage → navigation → product discovery → cart
- ▸Collaborated with international teams positioning Chilean team for direct integration into global development workflows
Technical Architecture
Micro-Frontend Architecture
NX monorepo with module federation enabling independent micro-frontend deployment while sharing common components and utilities across markets. Each market (CL, MX, CA, US) can customize features while maintaining core functionality parity.
User Journey Scope
Responsible for complete pre-checkout experience: homepage navigation, category browsing, product search and discovery, product detail pages, add-to-cart functionality, and cart management. Checkout and payment handled by separate specialized team.
Testing Strategy
Comprehensive multi-tenant testing approach using Jest for unit and functional tests, plus end-to-end testing ensuring features work correctly across all four markets without breaking existing functionality. Special attention to cart abandonment tracking and conversion optimization.
International Collaboration
Daily coordination with cross-functional teams across Chile, Mexico, Canada, and United States. Participating in international code reviews, sprint planning, and architecture discussions. Chilean team transitioning to direct integration with global development workflows.
Tech Stack
Scale & Impact
50K+
Daily active users (Chilean market)
4
International markets (CL, MX, CA, US)
~12
Production deployments managed per year
100%
Successful rollback execution when needed