Elton V.
Back-end and Systems Engineer

Skills

Spring

Cascading Style Sheets

Hibernate

Html

Java

Javascript

Kotlin

Google Cloud

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Bio

Java Developer and Architect with a decade of experience, specializing in problem-solving and crafting intelligent solutions. Possesses deep expertise in development and architecture patterns, including SOLID principles, Clean Code methodologies, and Clean Architecture. Proficient in implementing Test-Driven Development (TDD) from the initial stages to ensure safe, high-quality modifications and enhancements. Demonstrates extensive experience in continuous delivery utilizing Jenkins and Bamboo, coupled with a robust approach to code quality assurance through Sonar.

Senior Developer
12/1/2022 - Present

Successfully led the delivery of the billing use case, the largest module focused on the control of SIM cards and data plans for internet access for underprivileged students in public education. Developed and maintained the system architecture organized into two monoliths, utilizing React Native and Redux for the presentation layer and Kotlin and Spring Boot for the back-end. Ensured robust data management with PostgreSQL. Managed security protocols using cognitive tools in the DEV environment and the GOV.com portal in production. Facilitated seamless communication between front-end and back-end through REST APIs, with comprehensive documentation managed by Swagger to support team collaboration during development.
Senior Java Developer
6/1/2022 - 12/1/2022

Enhanced a scheduling system for channels and programming, leveraging WildFly for publishing REST services utilized by the front-end. Developed a robust set of validation rules and HQL creation through the use of reflection to manipulate fields sent by the front-end. Employed Elasticsearch to facilitate the integration of various systems. Managed the deployment process using Jenkins and internal tools for automatic deployment. Utilized JIRA for effective task management and to support Scrum methodologies.
Full Stack Java/Flutter Developer
8/1/2020 - 1/1/2022

Developed proficiency in Flutter/WEB for creating dynamic, responsive presentation layers. Managed data persistence using Firebase, ensuring robust and scalable database solutions. Implemented a multi-tier security layer, achieving high-security standards through system user authentication, Google Authenticator via SMS, and Firebase rules. Engineered reusable screen components and view template layers to enhance development efficiency and consistency across multiple screens.
Senior Full Stack Java Developer
8/1/2012 - 8/1/2020

Developed and delivered new modules for a high-performance registration platform, leveraging Test-Driven Development (TDD) to ensure superior code quality. The resulting system was designed for scalability and easy maintenance, maintaining optimal performance over four years despite database growth from 2 million to 7 million entries. As an architect on the shareholder registration team, collaborated with users to meet the demands of the Securities and Exchange Commission, enhancing data transparency and transaction integrity. Developed user interfaces and comprehensive rules for secure data entry and exit in market transactions. Managed communication modules between the registry and other systems using Message Queues, Web Services, and standard ISO files. Proposed and implemented a restructured business rules model, improving maintenance quality and speed, and enabling real-time rule updates.
Full Stack Java Developer
8/1/2011 - 8/1/2012

Led the architectural redesign of the Travel Plan module and truck risk management system for an insurance company. Implemented a process to generate travel plans for trucks, integrating them with pre-defined routes embedded with theft and burglary data to assess risk and compute insurance values. Enabled an approved travel itinerary to be utilized on a traffic control interface, facilitating real-time monitoring and management of cargo trips.
Full Stack Java Developer
2/1/2010 - 8/1/2011

Collaborated with the team to develop screens and processes for the Get Sudo module, focusing on calculating distribution and predicting car production. Responsible for creating a representation of Excel cells using JavaServer Faces (JSF) to facilitate calculations of produced cars and parts, including engines and transmissions imported from Japan. This role required a strong understanding of JavaServer Faces, JavaScript, and data modeling, enhancing skills in creating dynamic user interfaces and complex calculation models. Leveraged proficiency in JSF to streamline production forecasts and parts management, contributing significantly to the module's overall functionality and accuracy.