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Nelson Altarejos

@nelsonaltarejos

Senior .NET engineer at Alpha Brother’s, maintaining AmaWaterways platforms and automating guest and travel agent communications.

Philippines

Message

At Alpha Brother’s, I maintain backend systems and internal platforms supporting AmaWaterways operations. I contribute to the AmaVega website renewal and developed tools for Application Insights alerting and certificate monitoring.

I’m the sole owner of the Ama Quick Send process, which automates template-based emails for guests and travel agents. I’ve also managed the Cruise – Check In application, the Customer Booking Engine, and automated reporting systems.

Previously, I overhauled a legacy API for Quest Platform and supported connected-vehicle services at Accenture Philippines Inc., where I owned the EcoDrive platform’s APIs and Azure operations. Across these projects, I’ve worked with C# and .NET, cloud infrastructure, and test-driven development.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer (.NET / Backend / DevOps / Legacy)

Current

Alpha Brother's Man Power and Offshoring

Oct 2025 - Present (1 year)

Maintained and enhanced legacy backend systems for AmaWaterways, including the Ama Quick Send process and Cruise Check-In application. Designed internal tooling for operational reliability and co-designed a Microsoft Teams bot-based automation approach.

C#.NET Azure Application Insights Microsoft Teams Legacy Systems Test Driven Development Clean Code SOLID AI assisted Development

Senior C# / .NET Backend Engineer

Booth & Partners Inc.

Jan 2025 - Jun 2025 (5 months)

Led large-scale data migration pipelines and managed AWS infrastructure, reducing operational risk through automation tooling.

C#.NET AWS EC2 S3 Data Migration Automation

Senior C# / .NET Backend Engineer (Freelance / Remote)

NarraSoft Inc.

May 2024 - Dec 2024 (7 months)

Overhauled a poorly documented legacy API for a park management system, applying TDD and SOLID principles. Managed Azure infrastructure and CI/CD pipelines, and contributed to frontend features using React.

C#.NET Azure GitHub Actions CI CD Test Driven Development SOLID React API Design Reverse Engineering

Senior C# / .NET Backend Engineer

Offsite Solutions Inc.

Aug 2022 - Jul 2024 (1 year 11 months)

Worked on engineering-driven enterprise systems for industrial equipment design, applying Clean Architecture, DDD, and TDD. Operated as a senior individual contributor in a multi-tenant architecture.

C#.NET Clean Architecture SOLID Dry DDD Test Driven Development Multi tenant architecture Design Patterns

Senior .NET Developer / Analyst

Accenture Philippines Inc.

Nov 2019 - Aug 2022 (2 years 9 months)

Owned the EcoDrive subsystem within a connected vehicle platform, managing Azure infrastructure and executing zero-downtime deployments. Led migrations from Azure Classic to ARM.

C#.NET Azure Arm Zero Downtime Deployments Legacy Systems Infrastructure Migration

C# / .NET Software Engineer

Londa Online Technologies Inc.

Jun 2016 - Nov 2019 (3 years 5 months)

Designed and implemented backend components for proof-of-concept trading platforms, using C#/.NET and Python for prototyping. Supported deployments and environment setup.

C#.NET Python Backend Development Prototyping Deployment