About Me

Hi! I’m Alan Quintero, a Senior Software Engineer focused on backend systems and high-scale infrastructure.
I specialize in Java and Kotlin, 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


Contact Details
  • Talix logo

    Talix

    Hybrid (San Francisco, CA)
    September 2018 to August 2019

    Role: Software Engineer

    • Improved a customer-facing medical NLP engine used by medical coders to extract clinical concepts from unstructured records and map them to ICD-10/CPT/HCPCS codes.
    • Increased multi-word concept recognition accuracy by 5% by optimizing Trie construction and improving phrase matching within the NLP pipeline.
    • Improved precision by 3% by enhancing parsing logic for special characters and clinical note formatting, reducing false-positive concept matches.

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

    Infosys (client: Apple)

    Sunnyvale, CA
    June 2017 to September 2018
    Apple logo

    Role: Technology Analyst

    • Built a Java REST microservice that acted 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 reference mappings.

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

    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 (legacy desktop to web migration), USAA (new motorcycle insurance claims line of business), and Charter (ad scheduling optimization platform used by external clients).
    • Built REST APIs using Spring MVC / Spring Boot with Hibernate, integrating with Oracle and MySQL data stores.
    • Improved code quality and delivery reliability by establishing unit/integration testing practices (JUnit, Mockito, Selenium), enforcing standards via code reviews and SonarQube, and supporting CI pipelines in Jenkins.
    • Led small feature teams and mentored interns, improving onboarding and ensuring adherence to engineering best practices.

    • Technologies involved: Java | Spring MVC | Spring Boot | REST | Hibernate | Maven | JUnit | Mockito | Selenium | Git | Oracle SQL | MySQL | SonarQube | Jenkins
    Mexico clients logo

Skills

Back-end

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

Front-end

JavaScript | TypeScript | Vue.js | Express.js | Bootstrap | HTML5 | CSS3 | AJAX


Cloud Platforms

AWS | Heroku | Cloudflare


Methodologies

Agile (Scrum)


Languages

English: Advanced
Spanish: Native

Testing

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

  • 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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