Provided complete technical support and hardware maintenance, working from network configuration and monitoring to fault diagnosis and correction.

Optimized infrastructure availability and performance, implemented preventive maintenance routines, coordinated equipment updates and documented procedures to reduce downtime and accelerate incident resolution.

Developed and maintained internal applications in VB integrated with SQL databases, creating optimized queries, procedures and automations that accelerated data extraction and processing for analysis.

Delivered management reports and dashboards for board and management, translated business requirements into technical solutions, coordinated version updates and testing and implemented improvements that increased information reliability and decision-making agility.

Developed backend solutions in ASP.NET, implementing services and endpoints for integration with billing systems and XML-based flows, ensuring secure and reliable information exchange between platforms.

Modeled databases and optimized SQL queries, created XML file automation and transformation routines, and collaborated with operations to test and deploy updates that reduced processing failures and improved transaction traceability.

Act as a freelance professional managing sales operations on marketplaces (Shopee, Mercado Livre, Amazon and TikTok Shop), offering an end-to-end service from catalog preparation to commercial performance optimization.

My responsibilities include creating and optimizing ads (titles, descriptions, images and attributes), pricing and inventory management, configuration and optimization of sponsored campaigns, continuous monitoring of KPIs (visits, conversion, cancellations, average ticket) and competition analysis to adjust positioning strategy.

I also implemented automations to synchronize inventory and orders, established SLA processes for service and logistics, and delivered actionable reports to clients with tactical recommendations — all focused on increasing conversion, reducing rejections and scaling sales sustainably.