Summary
Overview
Work History
Education
Skills
Certification
Additional Information
Timeline
SoftwareEngineer

Abner Guadalupe Hernandez Mora

Software Engineer
Nezahualcoyotl, México,MEX

Summary

I am a web application and microservices developer with over 7 years of hands-on experience specializing in Java with Spring Boot. My journey began in various consultancies where I Improve my skills in essential tools and methodologies crucial for microservices development, including Agile practices, CI/CD pipelines, and many others technologies. My freelance works on Fiverr enriched my portfolio, providing me with opportunities to collaborate with clients across the United States and Canada. I have a solid understanding of the Software Development Life Cycle (SDLC), right from design, development, and deployment to testing and maintenance, ensuring adherence to quality standards at every phase. My technical knowledge includes a deep understanding of backend services, relational and non-relational databases like Redis, and a proficiency in various frameworks and technologies essential for robust, scalable application development. In my previous role as a Software Engineer, I spearheaded the migration of services from JDK 7 to JDK 11, and led small teams in the successful implementation of new features. Engaging with clients to explore solution alternatives and providing support. Actually, I'm working with JDK 17. My experience extends to designing complex and scalable applications, ensuring they meet the business objectives and are delivered on time. I am also proficient in developing and implementing web applications using JAVA, JSP, Hibernate, Spring, Web services SOAP/REST, and SQL, embodying a comprehensive understanding of back-end development practices. Whether working independently or leading small teams, my focus has always been on delivering highquality, reliable solutions that drive business success. I am now looking to leverage my skill set and experience in a challenging and dynamic environment.

Overview

9
9
years of professional experience
4035
4035
years of post-secondary education
2
2
Certifications

Work History

Software Engineer

Grupo Salinas
07.2024 - Current
  • Led the design and implementation of cloud-native microservices architectures on AWS, utilizing services such as ECS, ECR, ALB, and Docker to enable scalable, resilient, and maintainable systems. Developed and modernized critical backend services for monitoring ATM networks, ensuring real-time diagnostics and operational continuity. Migrated legacy microservices from Java 8 to Java 17, improving performance, maintainability, and security. Delivered batch processing solutions and event-driven integrations using AWS Lambda with Python.
    Proactively adopted AI-powered agents to accelerate development cycles by automating boilerplate and redundant code generation, focusing on reviewing and optimizing AI-generated output to ensure production readiness. Passionate about clean architecture, design principles like SOLID, and building robust systems that scale under high concurrency.

Application Developer

IBM
09.2021 - 02.2024
  • As a Backend Developer, I have implemented a variety of functionalities for two distinct clients, USAA and Scotiabank, totaling ten functionalities, along with numerous enhancements for existing systems. I have contributed to defining user stories to meet the business needs of the clients and collaborated with all team members to resolve bugs and enhance functionalities.

Freelancer

Fiverr
01.2019 - 08.2021
  • As a Freelance Developer, I have worked on three projects as a Backend Developer: The Guardians Android App, Capstone Blog Web App, and Validator Web App. Customers often seek my expertise for bug fixing, support, and implementing new features. Occasionally, I also take on the role of a teacher.

Java Developer Jr.

STO Consulting
11.2016 - 12.2019
  • As part of the development team for new features for the company's proprietary billing system, specifically involved in the design of digital document signing, as well as its creation. Additionally, I assisted in defining business logic and identifying useful technologies to achieve various purposes, such as creating zip files, retrieving records from different databases, data decoding, etc. The digital signing service helped the company to acquire more clients, as they now had a receipt with fiscal validity, increasing the demand for the service. Consequently, my team and I were assigned to integrate it with the company's accounting product.

Education

Bachelor Degree - Computer Science

UTEL

Bachelor Degree - Industrial Robotic Engineering

Instituto Politecnico Nacional
Mexico City, Mexico

Skills

Microservices with Java

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Certification

AWS Certified Cloud Practitioner, Amazon Web Services Training and Certification, 01/01/22, I have a fundamental understanding of IT services and their uses in the AWS Cloud.

Additional Information

Languages & Paradigms:
Java (Advanced), JavaScript (Proficient), TypeScript (Basic)

Frameworks & Libraries:
Spring Boot, Spring Framework, Spring Security, Spring WebFlux, Hibernate, JPA, JDBC, Lombok, Apache Commons

Testing & QA:
JUnit, Mockito

Authentication & Authorization:
OAuth2 (JWT, Client Credentials), SAML 2.0 (Okta), SCIM Protocol (SailPoint Integration)

API Design:
RESTful Web Services, SOAP Web Services, Swagger/OpenAPI

Frontend (Basic Knowledge):
React, Vite, HTML5, CSS3

Cloud & DevOps:
AWS (Certified Cloud Practitioner): ECS Fargate, ECR, ALB, S3, Route 53, CloudFormation and more
CI/CD & Containers: Docker, Jenkins, Jib (Maven Plugin for Docker)

Version Control & Build Tools:
Git (GitHub, GitLab, Bitbucket), Maven, Gradle

Databases & Messaging:
Relational: Oracle (PL/SQL), MySQL
Non-relational: Redis
Messaging/Eventing: Apache Kafka

Tools & Platforms:
IntelliJ IDEA, Eclipse, NetBeans, Visual Studio Code
Jira, Confluence, SonarQube, JaCoCo, Fortify, BlackDuck

Methodologies:
Agile (Scrum Certified), GitFlow

Soft Skills:
Leadership, Effective Communication, Problem Solving, Team Collaboration

Timeline

Software Engineer

Grupo Salinas
07.2024 - Current

Application Developer

IBM
09.2021 - 02.2024

Freelancer

Fiverr
01.2019 - 08.2021

Java Developer Jr.

STO Consulting
11.2016 - 12.2019

Bachelor Degree - Computer Science

UTEL

Bachelor Degree - Industrial Robotic Engineering

Instituto Politecnico Nacional
Abner Guadalupe Hernandez MoraSoftware Engineer