Guillermo Forero

. Lead technical API integration for top-tier clients including Carrefour, Decathlon and MediaMarkt across 24 countries, ensuring real-time pricing and product sync via custom API workflows.

• · Drive full-cycle ownership of custom API migrations, from architecture design to deployment, including debugging, regression testing, and log analysis using Grafana and Postman.

• · Conduct technical workshops and documentation for internal account managers to upskill non-technical teams on new API schema and migration plans.

• · Built automated monitoring tools to proactively flag integration errors, reducing incident resolution times by 48%.

• · Resolved escalated API integration issues for enterprise merchants generating $20M+ in Annual Revenue, collaborating with product and engineering teams to achieve an average resolution time under 4 hours.

• · Reduced high-priority support tickets by 40% through deployment of targeted SQL queries and Shopify API integrations, enabling faster root cause diagnoses and improved overall support efficiency.

• · Developed AI-powered troubleshooting workflows and documentation, increasing first-call resolution rates by 25% and raising customer-satisfaction scores by 15%.

• · Supported enterprise merchants in designing and implementing custom automation workflows using Shopify Flow, enabling teams to automate business logic across platforms, reduce manual tasks, and scale operations with reduced engineering overhead.

• · Validated KYC/AML documentation for 2,000+ new marketplace sellers across the UK, US, and ES, achieving a 99.8% compliance rate and streamlining onboarding.

• · Spearheaded a cross-functional project creating Spanish-language verification guides, training 50+ support staff and resulting in a 75% reduction in average meeting times (from 60 to 14 minutes).

• · Flagged 300+ high-risk seller applications, driving a 15% reduction in marketplace fraud.

• · Instituted bi-weekly stakeholder check-ins to establish a continuous feedback loop, elevating product quality and driving key metrics improvements.