Alan Quintero - Software Engineer

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About Me

Hi! I’m Alan Quintero, a Senior Software Engineer focused on backend systems and high-scale infrastructure. Experienced in Java, building scalable services, reliable integrations, and performance-critical systems.
Focused on clean architecture, reliability, and measurable improvements in production systems.

Work authorization: U.S. citizenship

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Contact Details

Resume

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  • PlayStation logo

    PlayStation

    Remote (San Diego, CA)
    August 2026 to Present

    Role: Senior Software Engineer

  • Career Break logo

    Career Break

    May 2025 to July 2026

    Planned career break focused on personal growth, travel, and spending quality time with family, including time in Mexico and traveling across Europe.

  • Meta logo

    Meta

    Remote (Menlo Park, CA)
    November 2020 to April 2025
    Meta products

    Role: Senior Software Engineer

    • Led integration of Facebook Memories into the Messenger’s Friends tab , by extending existing backend services and implementing client-side changes (Android), contributing to a ~10% increase in time spent.
    • Extended WhatsApp messaging workflows to support Meta AI features, introducing new encryption/decryption paths and ensuring backward compatibility and reliability; changes implemented on the Android client.
    • Improved WhatsApp message send latency by ~20% through batching, caching, and parallelization in large group messaging; optimizations implemented on the Android client to enhance end-to-end delivery and enable scaling from 256 to 1024 participants .

    • Skills: Java 10 | Kotlin | JUnit | Espresso | Git | Jetpack Compose | Android | Hack
  • Bind logo

    Bind On-Demand Health Insurance

    Remote (San Francisco, CA)
    May 2020 to October 2020

    Role: Software Engineer

    • Built and improved backend services for healthcare claims processing using Java, Spring Boot, and AWS.
    • Reduced SonarQube issues by 85% through refactoring and code quality improvements.
    • Automated third-party integration workflows, reducing manual deployment effort.

    • Skills: Java 11 | Spring Boot | Kafka | Gradle | AWS | JUnit 4 | Jenkins | Sumo Logic | Git | SonarQube
  • Zume logo

    Zume

    Mountain View, CA
    September 2019 to March 2020

    Role: Software Engineer

    • Built backend microservices supporting a delivery platform’s pickup experience.
    • Developed internal tools to support product demos and workflows.

    • Skills: TypeScript / JavaScript | Express.js | Vue.js | Jest | Redis | Git | JSON
  • Talix logo

    Talix

    San Francisco, CA
    September 2018 to August 2019

    Role: Software Engineer

    • Improved medical NLP engine mapping clinical records to ICD-10 codes.
    • Increased concept recognition 5% by optimizing Trie structures and phrase matching.
    • Improved precision 3% by enhancing parsing of clinical note formatting.

    • Skills: Java 7 | JUnit | Apache OpenNLP | CVS | Oracle SQL | Tomcat
  • Infosys logo

    Infosys

    Sunnyvale, CA
    June 2017 to September 2018
    Apple logo

    Role: Software Engineer - Consultant (Apple)

    • Built Java REST service supporting Oracle to NoSQL migration and ETL workflows.
    • Improved API latency by optimizing data transformations and introducing caching, reducing response times for downstream systems.

    • Skills: Java 8 | REST | Maven | JSON | JUnit 4 | Mockito | Git | Tomcat
  • Mexico logo

    TCS / Accenture

    Mexico
    January 2015 to May 2017

    Role: Software Engineer - Consultant (USAA, Charter)

    • Built Java / Spring backend services and REST APIs.
    • Improved system reliability and reduced incidents through automated testing and CI pipelines.
    • Worked with relational databases to design and optimize data access patterns.

    • Skills: Java | Spring MVC | Spring Boot | REST | Hibernate | Maven | JUnit | Mockito | Selenium | Git | Oracle SQL | MySQL | SonarQube | Jenkins

Skills

Backend & Architecture

  • Microservices, REST APIs, Distributed Systems
  • Event-Driven Systems, Asynchronous Processing
  • API Design, Service-Oriented Architecture
  • Data Processing Pipelines, Middleware Systems

Performance & Scalability

  • Performance Optimization, Latency Reduction
  • Caching Strategies, Concurrency, Parallelization
  • A/B Testing, Experimentation
  • Bottleneck Analysis, Profiling, System Tuning

Messaging & Systems

  • Messaging Systems, Message Delivery Optimization
  • Encryption/Decryption Flows
  • Reliability & Fault Handling
  • Logging, Monitoring, Debugging

Languages

  • Java
  • Kotlin
  • SQL
  • TypeScript

Tools & Libraries

  • Spring Boot, Spring MVC, Hibernate
  • Apache OpenNLP
  • Kafka
  • Selenium

Databases & Storage

  • MySQL, Oracle, Cassandra, Redis
  • Data Modeling, Query Optimization
  • Relational & NoSQL Databases
  • NoSQL

Cloud & DevOps

  • AWS
  • CI/CD, Jenkins
  • Maven, Gradle, Git
  • Tomcat, Sumo Logic

Testing & Quality

  • JUnit, Mockito, Jest, Espresso
  • Unit Testing, Integration Testing
  • Test Automation
  • Code Quality (SonarQube)

AI & Developer Tools

  • AI-assisted Development, Prompt Engineering
  • Anthropic Claude
  • GitHub Copilot
  • Ollama, OpenAI Whisper

Education

  • UAA logo

    Bachelor's Degree

    Universidad Autonoma de Aguascalientes

    Aguascalientes, Mexico
    August 2010 to December 2014

    B.S. in Computer Systems Engineering

Certifications

Android certification
Java 6 certification

Awards

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Projects

More About Me

I am a responsible, disciplined, and dedicated person who believes the key to success is to never stop learning. I love discovering something new every day and continue working step by step toward turning my dreams into reality.

In my free time, I enjoy reading books, exercising, watching movies/series, and traveling whenever I get the chance.

My favorite quote: "Success is not about speed, but about steady and consistent effort."


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