Alan Quintero - Software Engineer
About Me
Hi! I’m Alan Quintero, a Senior Software Engineer focused on backend systems and high-scale
infrastructure.
I specialize in Java, and I enjoy building scalable services, reliable integrations, and
performance-critical systems that hold up under real production load.
I care about clean architecture, operational reliability, and measurable improvements—whether that
means reducing latency, simplifying complex workflows, or making systems easier to maintain.
I’m driven by continuous learning and I like working on problems where thoughtful design and
execution directly translate into better product outcomes.
Work authorization: U.S. citizenship
- in/alan-quintero
- | San Diego, CA, USA |
- alanq.swe@outlook.com
Resume
Download Resume-
Meta
Remote (Menlo Park, CA)
November 2020 to April 2025
Role: Senior Software Engineer
- Led integration of Facebook Memories feed into the Messenger’s Friends tab , by extending existing backend services and developing Android UI components, contributing to a 10% increase in time spent.
- Engineered core WhatsApp Android messaging infrastructure to support Meta AI features by extending send/receive workflows and adding encryption/decryption paths while maintaining backwards compatibility and reliability.
- Reduced WhatsApp Android message send latency by 20% through A/B testing and performance optimizations (parallelization, caching, batching), enabling group size scaling from 256 to 1024 participants. .
- Skills: Android | Java 10 | Kotlin | JUnit | Espresso | Git | Jetpack Compose | Hack
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Bind On-Demand Health Insurance
Remote (San Francisco, CA)
May 2020 to October 2020
Role: Software Engineer
- Improved backend services for a healthcare insurance platform supporting medical claims processing (Java 11, Spring Boot, AWS).
- Reduced SonarQube code issues 85% by refactoring bug-prone logic and eliminating duplicated code.
- Automated integrations with a third-party .NET vendor system, reducing manual deployment work and improving operational efficiency.
- Skills: Java 11 | Spring Boot | Gradle | AWS | JUnit 4 | Jenkins | Sumo Logic | Git | SonarQube
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Zume
Mountain View, CA
September 2019 to March 2020
Role: Software Engineer
- Built TypeScript microservices supporting a new pickup experience for a pizza delivery platform and integrating with existing ordering workflows.
- Developed a production-ready Vue.js demo application used by sales teams to showcase the pickup flow, with automated tests for reliability.
- Skills: TypeScript / JavaScript | Express.js | Vue.js | Jest | Redis | Git | JSON
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Talix
Hybrid (San Francisco, CA)
September 2018 to August 2019
Role: Software Engineer
- Improved a medical NLP engine that extracts clinical concepts from unstructured records and maps them to ICD-10, CPT, and HCPCS codes.
- Increased multi-word concept recognition accuracy by 5% by optimizing Trie construction and phrase matching in the NLP pipeline.
- Improved concept recognition precision by 3% by enhancing parsing of special characters in clinical documentation.
- Skills: Java 7 | JUnit | Apache OpenNLP | CVS | Oracle SQL | Tomcat
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Infosys (client: Apple)
Sunnyvale, CA
June 2017 to September 2018
Role: Technology Analyst
- Built a Java REST microservice serving as middleware for internal systems and ETL pipelines during an Oracle to NoSQL migration, enabling scalable data exchange.
- Reduced API latency by 30% by optimizing transformation logic, eliminating redundant downstream calls, and caching frequently used mappings.
- Skills: Java 8 | REST | Maven | JSON | JUnit 4 | Mockito | Git | Tomcat
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IT Consulting (clients: Charter | USAA | General Electric)
Mexico
January 2015 to May 2017
Role: Software Developer
- Delivered Java backend solutions for enterprise clients including GE (desktop-to-web migration), USAA (motorcycle insurance claims platform), and Charter (ad scheduling optimization system).
- Built REST APIs using Spring MVC / Spring Boot with Hibernate, integrating with Oracle and MySQL databases.
- Improved code quality and delivery reliability through unit and integration testing (JUnit, Mockito, Selenium), code reviews, SonarQube standards, and CI pipelines in Jenkins.
- Led small feature teams and mentored interns, improving onboarding and engineering practices.
- Skills: Java | Spring MVC | Spring Boot | REST | Hibernate | Maven | JUnit | Mockito | Selenium | Git | Oracle SQL | MySQL | SonarQube | Jenkins
Skills
Java | Spring Framework | RESTful APIs | Microservices | Hibernate | JDBC
Mobile Development
Android (Kotlin | Java) | Jetpack Compose | Android SDK | XML
Application Servers & Containers
Docker | Apache Tomcat | Jetty
Operating Systems
macOS | Linux | Windows
JavaScript | TypeScript | Vue.js | Express.js | Bootstrap | HTML5 | CSS3 | AJAX
Cloud Platforms
AWS | Heroku | Cloudflare
Methodologies
Agile (Scrum)
Languages
English: Advanced
Spanish: Native
JUnit | Mockito | Selenium | Espresso | Jest
Database & Storage
MySQL | Oracle PL/SQL | Redis
Tools & CI/CD
Git | Maven | Jenkins | SonarQube | Swagger | Google Checkstyle | Jira
IDEs
Android Studio | Eclipse | IntelliJ IDEA | WebStorm | Spring Tool Suite | NetBeans
Education
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Bachelor's Degree
Universidad Autonoma de Aguascalientes
Aguascalientes, Mexico
August 2010 to December 2014
B.S. in Computer Systems Engineering
Certifications
Awards
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."