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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.

are you Interested
in hiring

developers?

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Schedule a free consultation call to check the candidate availability or  connect you with a similar candidate

2

We recruit on demand, free of charge to present the best candidates and their salary aspiration  within two weeks.

3

After the interviews and assessments, you can choose the candidate who best fits your needs

Our staffing fees are designed to accommodate your budget and payment preferences. Choose from three options: 12%, 16%, or 30% of the salary cost, depending on when you make the payment. Whether you prefer to pay upfront, during payroll, or 15 days after payroll, respectively.

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