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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  • 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

Languages

  • Java
  • Kotlin
  • SQL

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

Databases & Storage

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

Cloud & DevOps

  • AWS
  • CI/CD, Jenkins
  • Maven, Gradle
  • Git

Testing & Quality

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

Messaging & Systems

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

Tools & Frameworks

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

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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