Open to opportunities

Leonardo Hiroshi Silva

@leonardohiroshisilva

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Software engineer building scalable backend and AI solutions with .NET, TypeScript, and RAG.

Spain

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What I'm looking for

I’m looking for a team where I can ship scalable backend and AI features, modernize legacy systems, and partner closely on delivery—using .NET/TypeScript and practical RAG to create measurable impact.

I’m a Software Engineer who ships fast and improves reliability by combining modern backend engineering with AI-driven workflows. At Gestran, I accelerated feature delivery speed by 3x by integrating AI-assisted development tools (Claude, Copilot) into daily code generation and automated testing.

I’ve also led high-impact migrations—delivering a critical Delphi (VCL) to .NET services migration in two weeks, architecting scalable backends for 10,000+ concurrent users, and saving R$80K/year while migrating Zoho to Microsoft Dynamics 365. I bring strong system thinking from my System Analyst experience (including saving R$15K/year), and I continue exploring applied AI through my RAG real-estate chatbot.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Gestran

Feb 2025 - Present (1 year 4 months)

Accelerated feature delivery 3x by integrating AI-assisted development tools (Claude, Copilot) into daily workflow for code generation and automated testing. Migrated legacy Delphi (VCL) to modern .NET services, architected C#/.NET backends for 10,000+ concurrent users, and led the Zoho to Microsoft Dynamics 365 migration.

C++.NET Microservices System Architecture CI CD Azure DevOps React Native AI Tooling

System Analyst

Gestran

Nov 2024 - Feb 2025 (3 months)

Saved R$15K/year by migrating NFS-e to ACBr and reduced developer triage time by 50%. Supported system integration and issue resolution through faster diagnostics and migration execution.

Systems Analysis NFS E Integration Migration Planning Root Cause Analysis Troubleshooting CI CD Agile Scrum NFSe Integration

Software Engineer

Plus Sistemas

Sep 2022 - Apr 2024 (1 year 7 months)

Built robust desktop applications for 1,000+ enterprise clients by developing modular Delphi (VCL) code with Firebird database integration. Reduced system crash rate by 60% by refactoring Delphi 7 modules to Delphi 10.3 with improved memory management and error handling.

Delphi 10.3 Firebird Desktop Applications Memory Management Error Handling Delphi FireMonkey Cross Platform Development

System Analyst

Plus Sistemas

Sep 2021 - Sep 2022 (1 year)

Onboarded 20+ clients, executed bank integration homologation, and resolved issues 3x faster. Improved onboarding and integration outcomes through streamlined analysis and faster support workflows.

Systems Analysis Client Onboarding Homologation Troubleshooting Agile Scrum