SEBASTIÁN
MOLINA
BACKEND DEVELOPER
CONTACT
Buenos Aires City,
Argentina.-
-
/sam-arg
COLLEGE
Systems Analyst, ORT Institute.
Complete. 2018 – 2019.
LANGUAGES
Spanish: Native speaker
English: Intermediate
upper
SUMMARY
Experienced Software Developer with 10+ years of expertise in the
software development industry, specializing in Java and NodeJS.
Successfully delivered projects for diverse businesses, including
educational enrollment, high volume data processing, fintech, stock
management, gamification, and booking. Proficient in SQL/NoSQL
databases. Used various Open Source technologies such as Spring
Boot 2/3, Hibernate/JPA, Apache Kafka, JUnit 5 & Mockito for Java;
and Express, KafkaJs, Axios, Knex, Chai & Mocha. Also learned about
some AWS tools such as Lambda, SQS, SNS, DynamoDB, S3 and
Secret Manager. In the most projects in the last 5 years has been
mainly dedicated to microservices, cloud environments, design
patterns implementation, high quality and clean code. Continuously
pursues professional growth through online platforms like Udemy
and documentation readings. Collaborative team player who has
gained valuable experience working at Buenos Aires Italian Hospital
Institute, Froneus (startup), Directa24, ZenithTek and freelance
projects, as well as collaborating with global teams.
TECH
STACK
Backend:
General: Microservices, API REST/RESTful, websockets.
Java 8/11/17, Spring Framework, Spring Boot 2/3, Spring Batch,
Hibernate/JPA, JUnit 5 & Mockito Unit Testing, MapStruct,
Maven, Gradle.
NodeJs, Promises, Express, Joy, Knex, Axios, Asterisk-Manager,
Jest Unit Testing, Typescript, npm, Socket.io.
Databases: MySQL, Oracle, PostgreSQL, Microsoft SQL, MongoDB.
AWS: Lambda, SQS, SNS, DynamoDB, S3, Secret Manager.
Version Control: GIT.
Infrastructure: Apache Kafka, Redis, Docker, PM2.
Working Methodologies: Agile with Scrum or Kanban.
Log tracing: Kibana (with ElasticSearch, Logstash & Filebeat),
New Relic.
COURSES
TDD with JUnit 5. Alejandro
Polo Rangel, Udemy
Instructor. May 2023.
Unit Testing with JUnit &
Mockito. Ing. Cristian Rojas,
Udemy Instructor. May 2023.
Java Functional
Programming – Lambdas
and Streams. Domingo
Sebastian, Udemy Instructor.
March 2021.
Java Microservices with
Spring Boot and Spring
Cloud. Andrés José Guzmán,
Udemy Instructor. November
2020.
Java Spring Framework.
Grupo Esfera. November 2016.
AngularJS. Grupo Esfera.
October 2016.
Java Hibernate. Grupo Esfera.
September 2016.
PHP Object oriented.
Educación IT, March 2014.
PHP & MySQL. Educación IT.
October - December 2013.
Database introduction &
SQL. Educación IT, September
2013.
WORK
EXPERIENCE
Java & NodeJS Backend Developer - 3sam/ZenithTek
AUGUST 2023 - CURRENT
Serving developing software solutions for multiple company’s
products
Responsibilities included:
Design and develop User Journey System full backend
microservices for high concurrence apps over websockets.
Lead backend teams.
Hiring interviews.
Code review.
Migration for NodeJS backend with a custom pattern design.
Tech Stack: Java 17, Spring Boot 3, MongoDB, MySQL, Hibernate/JPA,
NodeJS, Socket.IO, Docker, PM2, Express, Apache KafkaOracleDB,
Hibernate/JPA, Microservices, JUnit 5 & Mockito, GIT, Scrum.
Freelancer - Backend Developer & PM
AUGUST 2020 - CURRENT
Serving developing software solutions as freelancer.
Responsibilities included:
Designed and developed the Gamification Rest API for Buenos
Aires Italian Hospital Health Informatics Conference on 2020
with Java 8, Spring Boot 2, JPA and OracleDB
Project management, backend architecture director and
backend developer for a booking startup, using Java 8, Spring
Boot 2 microservices, JPA, PostgreSQL. Still in development
Managed, designed and developed Spare Parts ERP Rest API
and data model, using Java 8, Spring Boot 2, JPA, MySQL
Tech Stack: Java 8+, Spring boot 2/3, MySQL, PostgreSQL, OracleDB,
Hibernate/JPA, Docker, Microservices.
Directa24 - Java Backend Developer
MARCH 2022 - JULY 2023
Served as backend developer for multiple projects for the
company's product.
Responsibilities included:
Lead Developer
Code review
Develop new integrations with financial providers entities (like
banks or fintechs) for cash-in and cash-out operation
Develop new Integrations with KYC providers
Plataform maintenance and improvements
Support providers with integrations to Directa24 API
Develop microservices from scratch with Java 17, Spring Boot 3
Developed for Quick Delivery & Improvements team
Tech Stack: Java 11 & 17, Spring Boot 2/3, MySQL, Redis, AWS Lambda,
SQS, SNS, DynamoDB, S3, Secret Manager, GIT, Scrum, New Relic,
JUnit 5 & Mockito, MapStruct.
SOFT
SKILLS
Communication
Empathy
Open Minded
Problem Solving
Adaptability
Ownership
Leadership
Teamwork
Creativity
Time Management
WORK
EXPERIENCE
PhinxLab - NodeJS Backend Developer
NOVEMBER 2021 - FEBRUARY 2022
Served as developer for multiple projects. Responsibilities
included:
Backend development for a booking app with NodeJs
Requirements survey for new projects
Data model design
Tech Stack: NodeJS, MySQL, Scrum.
Froneus - Java 8+ & NodeJS Backend Developer
NOVEMBER 2020 - OCTOBER 2021
Served as developer for the massive automatic phone call
campaign management. Responsibilities included:
Identify and fix bugs on the plataform
Improve the database processing Java and NodeJS services
Improve multiple services memory management
Collaborated with Agile methodologies implementation
Improve the React back-office application
Improved the NodeJS website backend security and
interaction with multiple microservices.
Improved producer and consumer queue management
Implemented Kibana for logs tracing
Tech Stack: Java 8 & 11, Spring Boot 2, MongoDB, NodeJS, React,
GIT, Scrum, Docker, PM2, Apache Kafka, Redis Automatic Kue
(NodeJs), Kibana (with ElasticSearch, Logstash & Filebeat), Express.
BBVA French Bank - Full Stack Developer
JUNE 2020 - NOVEMBER 2020
Served as web developer for the enterprise customers web
application. Responsibilities included:
Maintained the Corpoative Customers web application
Updated the website forms according to the Argentinian
Central Bank normatives
Tech Stack: Java 7+, KanBan.
Buenos Aires Italian Hospital Institute - Full Stack
Developer
JUNE 2014 - FEBRUARY 2020
Served as web developer for multiple web applications.
Responsibilities included:
Developed multiple PHP JQuery back-office CRUD’s for
University courses administration
Migrated the PHP public-faced website to Java and
AngularJS
Developed the enrollment website platform for University
courses and careers
Maintained and improved the website
Tech Stack: Java 8, Hibernate/JPA, JQuery, Javascript, HTML5, CSS,
Bootstrap 3 & 4, AngularJS, Git, SVN, Glassfish, WildFly, MySQL,
OracleDB, Spring Boot 2, KanBan & Scrum.
