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HI! MY NAME IS
Juan Sebastian
Full stack Developer
LEARN HOW tO HIRE
Juan Sebastian
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VIEW PROFILE
PHP
Laravel
React
.net
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MY skills
MY LIST OF
PROFESSIONAL
SKILLS
6
YEARS
OF EXPERIENCE
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LIVES IN
Colombia
ENGLISH
Intermediate
B2
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SUMMARY
ABOUT ME

Full-Stack Engineer with 6 years of experience using PHP (Laravel), Go (Gin), Java (Spring), JavaScript, and TypeScript (Express, React Hooks)

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OTHER
SKILLS

Programming Languages: Advanced: PHP, Javascript; Intermediate: Java, Golang; Basic: C#, Typescript Frameworks Tools: Advanced: Laravel, Express; Intermediate: React, Spring, Gin; Basic: .NET Core Databases: Advanced: PostgreSQL, MySQL; Intermediate: MongoDB; Basic: Redis

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MY STORY
professional
experience

Mercado Libre

Software Engineer — 05/ 2021 - 10/2022

● Led the development and launch of the «Automation» initiative in two warehouses in Mexico and Brazil in 11/2021.

● Led the development and launch of the «Non-Totable» initiative in a new warehouse in Brazil in 07/2022.

Tech Stack: Java/Spring, Go, Docker, Jenkins, AWS

Logisticapp

Backend Leader —08/ 2018 - 09/2018

● Successfully led two developers and a blockchain initiative for gaming bet and wallet management.

● Designed and implemented API to access all wallets and transactions layer for the Ethereum blockchain.● Led the design of complex SQL queries for logistics apps offered to companies like Domesa.● Designed a compliance program between blockchain and money management over Brinks standards.

Freelance

Software Developer & Tech Consultant — 01/2023 - Present

● I built a microservice to validate large data files (~100K regs), complex rules and email integration. Performance: ~(10K regs/sec). Architecture: Ports & Adapters. Agile: SCRUM Tech Stack: Node, JavaScript, MongoDB, PostgreSQL, EC2 ● As a consultant, I designed a microservice system to automate a complete business line for a consulting firm

Tech Stack: Node, TypeScript, MongoDB, PostgreSQL, EC2, Apache Kafka, React

Consulting Connection Business

Development and Technology Leader — 10/ 2018 - 04/ 2021  

● Improved by 25% development times by designing software development guidelines.

● I made a new frontend and backend of the leading software product offered to insurers for their business analysis.

● Improved data access by more than 35% by migrating the main company’s databases to PostgreSQL and improving queries

● Improved maintainability, availability, and performance by migrating the tech stack to microservices.

● Successfully led a small tech team and all the company's tech initiatives.

Tech Stack: Javascript/Node/React, HTML/CSS, PHP/Laravel, C#/.NET, PostgreSQL, MySQL, Docker

Logisticapp

Backend Developer —05/ 2018 - 07/ 2018

● First developer in the company with blockchain knowledge, training all the tech divisions.

● Implemented Ethereum blockchain and deployment of smart contracts there.● Supported the development and improvement of different companies’ software products.

Tech Stack: Javascript/Node, PHP/Phalcon, Solidity, PostgreSQL, MongoDB

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EDUCATION
ACADEMIC
record

ECCI University

Completed 54 credits towards a Technician’s Degree in IT Development

2014-2015

LATEST CERTIFICATIONS

HTTP API with Go using Hexagonal Architecture – CodelyTV. May 2022.

Go: OOP and Concurrence – Platzi. May 2022.

Introduction to Technical Writing and Code Documentation – Platzi. May 2022.

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