Yaison Alcantara
Verified Expert in Engineering
Back-end Development Developer
Santo Domingo, Distrito Nacional, Dominican Republic
Toptal member since May 4, 2021
Yaison is a Java developer with 10+ years of experience coding web-based applications. He's experienced in the full software development life cycle: development, coding, testing, implementation, and deployment. He is able to get hands-on with SQL databases, front-end development, and legacy systems as well. Yaison excels in multicultural environments with team members around the world.
Portfolio
Experience
- Back-end Development - 11 years
- Java - 11 years
- RESTful Web Services - 7 years
- HTML - 6 years
- SQL - 5 years
- JavaScript - 4 years
- Linux - 4 years
- Amazon Web Services (AWS) - 3 years
Availability
Preferred Environment
Linux, Slack, Outlook, Visual Studio Code (VS Code), Java, SQL, HTML, Cloud, REST, Web
The most amazing...
...bug I've fixed was in Oracle's WebLogic application server that prevented the entire team's app to load. A few months later, Oracle submitted an official patch.
Work Experience
Senior Software Engineer III
GBH Solutions
- Implemented an internal search engine capable of delivering full-text search queries in the sub <1 second response time.
- Dramatically optimized the application performance from a 5-second average to sub <1 second.
- Migrated legacy Java code to modern Java 11 with Spring Boot.
Senior Software Engineer
Indra
- Developed concurrent request processing for faster user data retrieval in an Android application.
- Migrated successfully part of C code into modern Java and provided the service with a REST endpoint.
- Created important business components and logic for the strategic planning and provision of the government-managed electrical grid.
Senior Software Engineer
Verizon
- Developed a multi-server and multi-app configuration system way before the word cloud was popular. It helped save many hours in configuring and storing per-app settings needed in every project.
- Implemented a messaging system when the team was constrained by infrastructure technical decisions. It helped deliver asynchronous messages and storage for quality of service between endpoints.
- Created a batch processing system that took on excel spreadsheets, uploaded by the user, which processed row by row and inserted the data in the database.
Experience
Carmarket Crawler
Education
Bachelor's Degree in Computer Systems Engineering
Instituto Tecnológico de Santo Domingo - Santo Domingo, Dominican Republic
Certifications
Oracle Certified Professional, Java SE 6 Programmer
Oracle
Skills
Libraries/APIs
React, Node.js
Languages
Java, SQL, JavaScript, HTML
Frameworks
Hibernate, Spring
Platforms
Oracle, Linux, Amazon Web Services (AWS), Docker, Web
Storage
MySQL, MongoDB, Databases, JSON
Paradigms
REST
Other
RESTful Web Services, Back-end Development, Software Engineering, Information Systems, Web Services, SOAP, Cloud
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