Renato Balcázar

Hi, Renato here!

Technical Lead & Full Stack Engineer

5 years building scalable backend services, web platforms, and mobile applications

Specializing in Spring Boot microservices, Angular, Kotlin, and technical leadership

Full Stack Engineer with 5 years of experience building scalable backend services, web platforms, and mobile applications. Currently Technical Lead at Zaga Labs, architecting microservices with Spring Boot and building Angular web applications for US-based enterprise clients. Proven expertise across the full stack—from backend development (Spring Boot, Microservices, REST APIs) and frontend technologies (Angular, TypeScript) to mobile platforms (Android, Kotlin Multiplatform). Passionate about clean architecture, mentoring developers, and building mission-driven products—like my work at Lazarillo, where I helped 10,000+ visually impaired users navigate their world.

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About Me

I'm a Full Stack Engineer with 5 years of experience building scalable backend services, web platforms, and mobile applications. I specialize in Spring Boot microservices, Angular, and Kotlin.

Currently Technical Lead at Zaga Labs, I architect microservices and build Angular web applications for US-based enterprise clients. Previously at Globant, I led development of solutions serving 100,000+ users.

One project I'm particularly proud of is my work at Lazarillo, where I helped 10,000+ visually impaired users navigate their world through a full-stack accessibility platform. This experience taught me the power of technology to make a real difference in people's lives.

My approach combines technical excellence with strategic thinking—I always strive to understand the business context behind technical decisions and prioritize features that deliver maximum value.

5
Years Experience
100K+
Users Served
5
Team Members Led
100%
Remote Work

Career Highlights

Key achievements and milestones from my professional journey

Technical Leadership

Technical Lead at Zaga Labs for US-based clients, mentoring developers, and driving architectural decisions

High-Impact Projects

Built systems serving 100K+ users with 99.9% uptime and improved performance metrics by 40%

Full-Stack Expertise

Proficient across mobile (Android, KMP), backend (Spring Boot), frontend (Angular), and DevOps (Docker, K8s)

Modern Architecture

Expert in microservices, Clean Architecture, SOLID principles, and migrating monoliths to scalable systems

Social Impact

Built accessibility app at Lazarillo helping 10,000+ visually impaired users navigate independently

Proven Results

Reduced code duplication by 60%, improved API performance by 40%, and cut deployment time by 50%

Technical Expertise

Comprehensive skills across the full technology stack

Backend Development

Expert5 years

Building scalable backend microservices with Spring Boot serving 100K+ users

Key Skills:

KotlinSpring BootSpring SecuritySpring Data JPAPostgreSQLRedis+4 more

Frontend Development

Advanced4 years

Building responsive web applications with Angular and TypeScript

Key Skills:

AngularTypeScriptRxJSHTML5/CSS3JavaScriptAngular Material+3 more

Mobile Development

Expert5 years

Building native and cross-platform mobile applications with Kotlin and KMP

Key Skills:

KotlinKotlin MultiplatformAndroid SDKJetpack ComposeMVVMClean Architecture+4 more

DevOps & Infrastructure

Advanced3 years

Implementing CI/CD pipelines and container orchestration for scalable deployments

Key Skills:

DockerKubernetesGitLab CIGitHub ActionsAWSLinux+2 more

Architecture & Design

Advanced4 years

Designing scalable, maintainable systems with clean architecture principles

Key Skills:

MicroservicesClean ArchitectureDesign PatternsSOLID PrinciplesDDDSystem Design+2 more

Leadership & Soft Skills

Advanced3 years

Leading technical teams and mentoring developers to achieve excellence

Key Skills:

Technical LeadershipMentorshipCode ReviewCommunicationAgile/ScrumProblem Solving+2 more

Testing & Quality Assurance

Advanced5 years

Implementing comprehensive testing strategies for reliable software delivery

Key Skills:

JUnitMockitoEspressoTDDIntegration TestingTest Automation+2 more