Blumenau, Santa Catarina, Brazil
Senior Software Engineer & Architect | 12+ Years of Expertise in .NET & Cloud I specialize in building high-performance, cloud-native backend solutions that bridge the gap between robust architecture and business profitability. My expertise lies in transforming complex legacy monoliths into scalable, cost-effective distributed systems. Key Impact & Results: Cost Efficiency: Spearheaded a migration to Event-Driven Microservices on AWS, achieving an 86% reduction in monthly cloud costs. Massive Scale: Re-engineered data flows using MongoDB, scaling capacity from 30M to 80M documents per month. Revenue Growth: Led the transition to modern SaaS models, helping expand the customer base to 5,400 clients and boosting monthly revenue to BRL 1.4M. Security: Designed an anti-fraud QR Code/Hash engine from scratch, reducing forgery cases to zero. Technical Expertise: Backend: .NET 8, C#, Microservices, Hexagonal Architecture, DDD, Clean Code. Cloud & DevOps: AWS (EC2, S3, DynamoDB, RDS), Azure, RabbitMQ, CI/CD (Jenkins). Databases: PostgreSQL, SQL Server, Oracle, MongoDB, Redis. International Career Goal: I am currently seeking to leverage my extensive experience in distributed systems and cloud architecture within global organizations. I am focused on contributing to high-scale international projects where technical excellence and cost-effective scalability are priorities.
Spearheaded the architectural migration from a legacy monolith to Event-Driven Microservices (Hexagonal Architecture), increasing scalability to 80M documents/month. Reduced monthly AWS cloud infrastructure costs by 86% (from BRL 110k to 15k) through resource optimization and multi-tenant architecture implementation. Architected and deployed PostgreSQL support to replace Oracle/SQL Server, achieving zero database licensing costs for new SaaS deployments. Engineered 100+ complex integrations (REST, SOAP, AMQP), expanding the customer base by 157% and boosting monthly revenue from BRL 230k to BRL 1.4M. Optimized legacy data flows using MongoDB, delivering a performance boost that allowed the system to handle 2.6x more volume without increasing hardware footprint. Refactored core systems using Clean Code and Design Patterns, reducing memory/CPU overhead by 60% and stabilizing the environment to an average of only 8 bugs/month.
Modernized a mission-critical Sanitary Surveillance system by migrating from ASP.NET 2.0 to ASP.NET 4.7, replacing legacy Oracle Procedures with high-performance C# code. Increased team delivery efficiency by 300% through the redesign of workflow automation, eliminating system bottlenecks and support tickets. Developed a custom QR Code & Hash validation engine from scratch, successfully reducing sanitary license forgery cases to zero. Accelerated billing generation from a 5-minute process to instant delivery by migrating legacy Delphi services to a native .NET library.
Transformed a Desktop ERP (WinForms/WPF) into a modern SaaS Web Platform, enabling a new recurring revenue stream for the company. Optimized heavy reporting routines by migrating to MongoDB, reducing execution time from 35 minutes to under 2 minutes. Eliminated the need for on-premise client infrastructure by implementing a cloud-ready Web architecture, significantly reducing customer onboarding friction.