Looking for a job

Sandro Nakaguma

@sandronakaguma

Message

I build and modernize reliable enterprise applications across .NET, databases, and APIs.

Japan

Message

What I'm looking for

I'm looking to grow into Lead Software Engineer responsibilities, contributing technical decisions across enterprise modernization, backend and frontend applications, APIs, databases, and reliable build-and-release delivery.

I'm currently resolving critical issues and modernizing a VB6 claims application at AIG via Cognizant, bridging application updates with COBOL mainframes through Rumba. I support reliable changes using Sybase and Git.

Previously, I modernized .NET Excel add-ins and built an FX Reporting System at Nomura Securities, and delivered full-stack applications at Axelspace, Rakuten, and as an independent owner. My work spans C#, .NET Core, ASP.NET, REST APIs, SQL databases, CI/CD, architecture, and technical delivery across claims, reporting, satellite, finance, and business tools.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

AIG

Mar 2026 - Present (7 months)

Contributed to Fujitsu COBOL to IBM mainframe modernization within the Claims domain. Developed new features and resolved critical issues in a core VB6 claims application communicating with COBOL mainframes via Rumba.

COBOL Mainframe VB6 Rumba Agile Sybase Git

Contract Software Engineer

Nomura Securities

Aug 2022 - Mar 2025 (2 years 7 months)

Led modernization of legacy .NET 4.5 Excel Add-ins, improving performance and maintainability. Engineered an FX Reporting System using C#, Java REST APIs, and Oracle, and automated CI/CD pipelines with Jenkins, Git, and Ansible.