Open to opportunities

Gabriel Carmelo

@gabrielcarmelo

Senior Full-stack Software Engineer with strong experience building scalable, high-performance systems across the full stack.

Peru

Message

What I'm looking for

I’m looking to build and scale event-driven, high-performance systems end-to-end—React/.NET/full-stack with Azure/AWS—working in agile, product-driven teams. I want ownership, cross-team collaboration, and room to deepen AI-enabled engineering.

I’m a Senior Full-stack Software Engineer with strong experience building scalable, high-performance systems across the full stack. I’m proficient in React, TypeScript, Node.js, and .NET, with hands-on experience in serverless architectures and event-driven microservices.

I lead end-to-end solution architecture, designing loosely coupled systems with asynchronous messaging patterns and resilience in mind. At Willis Towers Watson, I drive cross-team delivery for the Via Benefits platform and work on .NET, React, TypeScript, micro frontends, and Azure.

I architected Azure Functions serverless microservices, built caching layers that reduced backend latency by 60%, and implemented ETL pipelines using Python and containerized AWS tooling.

I am continuously learning, and I integrate AI in my development workflows, building MCP servers and multi-agent orchestration to increase delivery time.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Willis Towers Watson

Mar 2026 - Present (3 months)

Led expansion of the Via Benefits platform into new product areas, extending health benefits coverage to broader audiences. Architected event-driven, loosely coupled distributed solutions on Azure and built MCP servers and multi-agent orchestration to integrate AI into the development workflow.

.NET React TypeScript Azure Serverless Architecture MCP Multi agent orchestration

Software Engineer

Willis Towers Watson

Jul 2024 - Feb 2026 (1 year 7 months)

Contributed to the Via Benefits marketplace for U.S. health coverage enrollment by building scalable micro-frontends with React and TypeScript plus .NET/Node.js backends. Designed a distributed caching layer that reduced backend latency by 60% and developed an internal actuarial tool that enabled real-time simulations for faster contract negotiations.

NodeJS React TypeScript .NET Azure Terraform Performance Optimization Simulation

Backend Developer

Tata Consultancy Services

Oct 2023 - Jul 2024 (9 months)

Architected event-driven serverless microservices with Azure Functions (Node.js/TypeScript), Azure Service Bus, and Azure Storage. Implemented a fault-tolerant AWS retry architecture to ensure data consistency at high ingestion volumes and built ETL pipelines in Python using Docker, AWS Fargate, and AWS Batch, reducing time-to-market by up to 24 hours.

NodeJS TypeScript Azure Functions Azure Service Bus Azure Storage AWS Retry Architecture ETL Python AWS Fargate AWS Batch

In-Charge Consultant

Ernst & Young

Jul 2023 - Oct 2023 (3 months)

Designed a SaaS multi-tenant application to simplify compliance workflows using C# .NET, ASP.NET, Entity Framework Core, ReactJS, and SQL Server, including complex stored procedures and relational schema. Proposed and implemented a legacy architecture redesign on Azure, reducing average CPU by 60%, memory usage by 40%, and eliminating daily availability issues.

C# .NET ASP.NET Entity Framework ReactJS SQL Server Azure System Architecture Stored Procedures Performance Optimization

Assistant Consultant

Ernst & Young

Jan 2022 - Jul 2023 (1 year 6 months)

Built a KYC workflow web application for an international bank using C# .NET, Angular, and Azure. Implemented Azure Pipelines CI/CD to eliminate deployment downtime and redesigned a multi-tenant SaaS architecture, reducing infrastructure costs by 83% while removing CPU saturation issues.

C# .NET Angular Azure Azure Pipelines CI CD Performance Optimization KYC