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Gustavo Zavaleta Vargas

@gzavaletavargas

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Senior full-stack developer building DDD-driven, event-based systems that scale reliably.

Peru

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What I'm looking for

I’m looking for a role where I can own backend and product-critical workflows—DDD-based services, event-driven architectures, and cloud migrations—while collaborating closely with teams, mentoring engineers, and continuously improving reliability and delivery speed.

I’m a Fullstack Senior Software Developer focused on building backend services and user-facing experiences that stay accurate under real-world complexity. At Restaurant Brands International (RBI), I designed and built Node.js/NestJS backend services and React TypeScript interfaces using Domain Driven Design (DDD) to power complex offer logic, dynamic pricing rules, and targeted marketing for millions of users.

I also specialize in event-driven, serverless systems—architecting AWS Lambda workflows with SQS, SNS, DynamoDB Streams, and Kinesis to process real-time cart and pricing events at scale with high throughput and reliability. Across RBI and prior roles (EasyHealth, Hapi, Globant, and Belatrix), I’ve led migrations, refactors, Kafka-based microservices, CI/CD automation, and reusable developer tooling, and I actively mentor junior engineers through architecture reviews and coding standards.

Experience

Work history, roles, and key accomplishments

Senior Fullstack Developer

Restaurant Brands International (RBI)

Feb 2023 - Mar 2026 (3 years 1 month)

Designed and built backend services for the Offers & Pricing engine using Node.js/NestJS and React TypeScript, applying DDD to support complex offer logic and targeted marketing for millions of users. Architected serverless event workflows on AWS (Lambda, SQS/SNS, DynamoDB Streams, Kinesis) and led a legacy combo-meal refactor to improve pricing accuracy across web and mobile.

Node TypeScript NestJS React AWS Lambda SQS SNS DynamoDB Kinesis

Senior Backend Engineer

Easyhealth

Jan 2022 - Jan 2023 (1 year)

Led migration of a monolithic Node.js application from Azure to Google Cloud Platform using Docker and Kubernetes (GKE) to improve deployment consistency and scalability. Implemented CI/CD with GitHub Actions and refactored the platform into Kafka-based microservices to increase decoupling and throughput.

Node NestJS Docker Kubernetes CI CD GitHub Actions Microservices Apache Kafka Google Cloud Platform (GCP)

Technical Lead Software Dev

Hapi

Jan 2021 - Dec 2021 (11 months)

Upgraded legacy code and introduced scalable, reusable modules to improve maintainability across the platform. Built secure Node.js/NestJS microservices using DDD for stock and cryptocurrency trading (~30% improvement via better authentication, logging, and code quality) and implemented Kafka-based event-driven communication on Kubernetes using Strimzi.

Node NestJS Apache Kafka Kubernetes Strimzi Vault Authentication Event Driven Architecture

Technical Leader Consultant

Globant

Mar 2018 - Jan 2021 (2 years 10 months)

Spearheaded integration of metadata tools for Autodesk’s web 3D marketplace using AWS Serverless and Terraform with Node.js/NestJS and React. Delivered secure infrastructure prototypes for Disney Parks with AWS, Vault, and Kafka; built reusable React/Redux components and created backend APIs with Node.js/Express and TypeORM.

Node TypeORM React AWS Serverless Terraform Vault Apache Kafka AWS Lambda

Software Engineer (Java/Angular)

Belatrix / Applying Consulting

Jul 2015 - Mar 2018 (2 years 8 months)

Built internal ad-creation tools for Kargo using Angular 4 and Node.js/Express, and led backend development of REST API endpoints for AOL using Java (Spring/Hibernate). Developed multi-platform transaction tracking apps and built an AWS-based document indexing solution using Java, AngularJS, and Elasticsearch.

Angular Node Java AngularJS Elasticsearch AWS API Development