Hi, I'm John Toro
Building scalable
and secure platforms.
Systems Engineer and Cybersecurity Specialist with over 18 years of experience. Expert in Cloud architectures, DevSecOps, and high-performance team leadership.
About Me
Professional Profile
Tech Lead and Senior Full Stack Engineer with over 18 years of experience designing and building scalable, secure, and high-impact software products. Specialized in modern ecosystems (TypeScript, React, Node.js, Golang, C#/.NET) and cloud architectures (Azure, AWS).
I have led technical teams in high-demand environments (such as Mercado Libre and Fintech/Web3 projects), applying agile methodologies and Clean Architecture principles. Furthermore, my solid background as a Cybersecurity and DevSecOps specialist allows me to integrate security practices (OWASP, Pentesting) from design to continuous deployment.
Experience
Completed
Experience
Senior Software Engineer - Tech Lead
March 2024 - PresentAbogada Alexandra
Led the team responsible for creating cross-cutting applications for easy integration and security control.
NuxtJS 
NestJS 
Azure Azure DevOps 
Tailwind CSS 
Sidebase Auth 
OWASP Tech Lead
September 2022 - December 2023Zulu Tech
Led the creation of a B2C platform for savings in digital dollars (USDC) via Web3 and Polygon. Also directed the development of a B2B platform for fast and transparent transfers.
React 
Next.js React Native 
Node.js 
Golang 
BigQuery 
Terraform Sr Software Engineer
October 2020 - September 2022Mercadolibre
Worked on KYC (Know Your Customer) validation systems for new countries. Improved manual validation reducing errors and developed an application for parameterizing rejection messages.
Golang React 
Fury Senior Consultant
September 2019 - September 2020Indra Company S.A.S
Developed an application to calculate oil well consumption for Ecopetrol, achieving a 60% optimization in savings. Technical lead for a 4-person team.
C# React Azure 
SQL Senior Back End Developer
May 2017 - August 2019Fuse Mobile S.A.S
Developed projects such as 'Alert Zone' (emergency monitoring in Australia), quoting application for Hunter Douglas, and 'Easy Payslip' (award-winning payroll app for SMEs).
Node.js React Native SQL 
AWS 
Elasticsearch Lider Desarrollo .Net
September 2011 - April 2017Intergrupo
Technical lead for projects with Protección S.A. and Suramericana, managing production deployments and source code control.
C# 
ASP.NET 
SQL Server 
Oracle TFS Platform Administrator - Developer .Net
May 2010 - September 2011Inmel S.A.
Administration of the help desk platform (System Center Service Manager) and development of integration tools.
C# SQL Server 
Crystal Reports Developer VB.Net
November 2009 - May 2010GroupM Colombia
Developed advertising applications for TV, Radio, and Press for agencies like Mindshare and Mediacom.
VB.NET SQL Server NET Developer
October 2008 - November 2009Asesorías En Sistemas GOD Ltda
Developed internal inventory control applications for Almacén Éxito.
C# SQL Server PHP Web Developer
April 2008 - October 2008Savia Grupo Tecnológico
Developed corporate web portals for major clients such as ISA, Transelca, and Isagen.
PHP 
MySQL Education
Specialization in Information Security
Politécnico Grancolombiano
2018 - 2019Systems Engineering
Instituto Tecnológico Metropolitano
2009 - 2014Information Systems Technology
Instituto Tecnológico Metropolitano
2005 - 2009Technical High School Diploma in Computer Science (Software Design)
I.E. Gilberto Álzate Avendaño
1999 - 2004Courses and Certifications
App Development with React Native
Platzi - May 2024Professional Docker
Edutin Academy - April 2024JavaScript Frameworks and Libraries Course
Platzi - March 2024Vue.js Course: Introduction and Fundamentals
Platzi - March 2024JavaScript Closures and Scope Course
Platzi - March 2024Clean Architectures for Software Development
Platzi - February 2024Pentest Diploma
Edutin Academy - January 2024Practical React Native: Forms, Storage and Deploy
Platzi - July 2023Practical React Native: List Management and API Consumption
Platzi - March 2023Introduction to React Native Course
Platzi - March 2023Creating UI Libraries for React Course
Platzi - February 2023JavaScript Asynchronism Course
Platzi - January 2023Basic JavaScript Course
Platzi - December 2022React JS, Golang and MongoDB Creating a Social Network like Twitter
Udemy - June 2022Complete Docker Course from Zero to Expert
Udemy - May 2022React, Redux, Typescript, Firebase: Fullstack Serverless
Udemy - August 2021Learn to program with Go (Golang)
Udemy - July 2021Scrum Foundation Professional Certificate (SFPC)
CertiProf - March 2020ReactJS and redux: frontend expert in Spanish
Udemy - March 2020Big Data Certificate
Politécnico Grancolombiano - December 2018Introduction to Xamarin
Campus MVP - June 2017Skills
Front-End & Mobile
Back-End
Databases & Data
Cloud & DevOps
Security & Methodologies
Contact
Let's Talk
Open to exploring new professional opportunities and technical challenges. If you think my experience can add value to your team or organization, feel free to contact me.