Senior Beck-End Developer

• Aug 2021 - Present

Senior Back-end Developer

• Nov 2020 - Sep 2021

Our mission is to ensure that 100% of 18+ end-users frictionlessly and securely authenticate their age. As a team of ex- and existing e-commerce merchants, we are best positioned in the market to achieve this and know due to potential revenue loss that anything less is unacceptable. Our mission is to ensure that 100% of 18+ end-users frictionlessly and securely authenticate their age. As a team of ex- and existing e-commerce merchants, we are best positioned in the market to achieve this and know due to potential revenue loss that anything less is unacceptable.

Senior Back-end Developer

• Nov 2020 - Sep 2021

Nucleus is a single application that streamlines online transactions, redefining the e-commerce experience for businesses and consumers. We’re selling a frictionless customer experience (reducing acquisition costs), and cheaper payments, to decision-makers across customer success, marketing, and finance teams. Nucleus is a single application that streamlines online transactions, redefining the e-commerce experience for businesses and consumers. We’re selling a frictionless customer experience (reducing acquisition costs), and cheaper payments, to decision-makers across customer success, marketing, and finance teams.

Software Engineer

• Aug 2018 - Nov 2020

Senior Software Engineer

• Feb 2012 - Jun 2018

Work done with the correspondent banking team: • Software analysis, implementation, and maintenance using Java/EE and Java/SE; • Integration of Java/SE software with devices(Pin-pad, Printer) using JNA/JNI; • System restructuring to improve performance and stability using modern methodologies and technologies; • Integration of internal and external systems; • Migrate desktop to web applications with Java 8 using Jersey 2.x, AngularJS, monitored using Prometheus; • Systems integration between banking systems and payment systems. (e.g. Sitef, Cielo); Work done with the customer service and telephone banking team: • Developed systems for customer service and telephone banking transactions; • Created a library to parse Java Objects to voice XML(VXML); • Created a library to create dynamic IVR(Interactive Voice Response) flows with Java; • Migrated IVR(Interactive Voice Response) flows to Java platform; • REST API development with Java 8 using Jersey 2.x, monitored by Prometheus; • REST API development with NodeJS using Express; • User interfaces building using SPA framework AngularJS; • Perform unit test using JUnit with Mockito and PowerMock for Java and Jest for JavaScript;

Senior Software Engineer

• Dec 2015 - Mar 2018

• Write SQL queries for Relational Database. • Understand emerging web and mobile development models. • Web Application development and maintenance for Android and iOS using Ionic Framework. • Mobile application development and maintenance using React Native Framework. • REST API development with Java 8 using Spring Framework. • REST API development with NodeJS using Express. • User interfaces building using SPA framework AngularJS and React JavaScript library. • Perform unit testing using JUnit with Mockito and PowerMock for Java and Jest for JavaScript. • Scrum/Agile development methodologies.

Software Engineer

• 2011 - Feb 2012

Software analysis, implementation, and maintenance using JBoss Seam, JSF, Spring, Spring Security, Facelets, RichFaces and Hibernate/JPA. Write SQL queries for Relational Databases Oracle and MySQL. Entity mapping and queries writing with Hibernate/JPA. Reports with JasperReports and iReports. Task scheduling with Quartz. Perform unit testing using JUnit with Mockito. Software analysis, implementation, and maintenance using JBoss Seam, JSF, Spring, Spring Security, Facelets, RichFaces and Hibernate/JPA. Write SQL queries for Relational Databases Oracle and MySQL. Entity mapping and queries writing with Hibernate/JPA. Reports with JasperReports and iReports. Task scheduling with Quartz. Perform unit testing using JUnit with Mockito.

Junior Software Engineer

• May 2011 - Aug 2011

Software implementation and maintenance using JBoss Seam, JSF, RichFaces, Hibernate/JPA, reports with JasperReports and iReports and unit tests using JUnit. Experience with Scrum/Agile development methodologies; Use of GIT version control software. Software implementation and maintenance using JBoss Seam, JSF, RichFaces, Hibernate/JPA, reports with JasperReports and iReports and unit tests using JUnit. Experience with Scrum/Agile development methodologies; Use of GIT version control software.

Junior Software Engineer

• Dec 2009 - Mar 2011

Software Engineer Intern

• Mar 2009 - Jan 2010