Carlos Z.
CTO

Skills

Node.js

Django

Cascading Style Sheets

Ruby

Dynamodb

Html

Javascript

Php

Python

Postgresql

Mysql

Amazon Aws

Docker Cloud

Carlos is available for hire

Hire Carlos Z.

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Bio

An experienced web developer since 1995, with a background rooted in self-education, this individual possesses comprehensive expertise across diverse domains such as Linux, Unix, front-end and back-end development, information architecture, user experience (UX), DevOps, digital marketing, design, team management, and Scrum methodologies. Specializing in the creation of products that integrate creative capabilities with logical programming skills, this professional is distinguished by a profound ability to conduct thorough market research and a keen understanding of daily user needs. This approach facilitates innovation through the simplification of user interactions and an acute focus on meeting user requirements effectively.

PHP Programmer
10/1/2005 - 3/1/2008

Created the e-Lever product, developing its visual identity, logo, and defining comprehensive marketing strategies. Designed and implemented the system architecture, which included creating a robust MVC framework that significantly reduced screen development time for programmers. Enabled the development of a CRM system that typically would have taken two years to complete in just four months.

Led the McDonalds Rent System Project, which involved creating dedicated portals for landlords and franchisees. Actively participated in sales meetings and contributed to project design discussions as a developer.

Projects included the McDonalds Locator Portal, utilizing technologies such as PHP, Front-End development, Oracle, and HPUX Server. Additionally, conceptualized and developed the e-Lever CRM Web application, including the creation of its own framework and promotional material.
Senior Full-stack Engineer
6/1/2022 - 10/1/2023

Contributed to the successful completion of five distinct projects utilizing Ruby on Rails. Developed expertise in Ruby on Rails alongside proficiency in Middleman and Jekyll for static site generation. Enhanced front-end development skills with HAML for HTML templating, jQuery for JavaScript functionalities, and Typescript for scalable coding. Integrated advanced UI components using ReactJS, ensuring robust and dynamic web applications.
CTO / Co-Founder
3/1/2017 - 6/1/2022

Developed a high-performance and scalable financial education platform optimized for mobile using a microservices architecture. Automated testing processes to streamline deployment. Spearheaded the product creation from the ground up and managed a small team consisting of a back-end developer, a front-end developer, a designer, and a social media specialist. Utilized AWS for cloud services, Django and Python for backend development, and Pure JS, HTML, CSS, and jQuery for frontend development. Incorporated SVG animations to enhance user experience. Applied web design skills using Photoshop and Illustrator. Ensured compliance with LGPD (General Data Protection Law).
Full-Stack Developer
8/1/2016 - 3/1/2017

Developed proficiency in Python and Django, handling the migration to a new login system and maintaining both page and functionality changes. Utilized front-end technologies including Less, Sass, HTML, CSS, and jQuery to enhance the user interface. Leveraged AWS for cloud infrastructure needs and implemented API Restful services to ensure seamless backend communication.
CTO / Founder
7/1/2013 - 11/1/2015

Developed a SAAS Sustainability Indicators system producing reports adhering to GRI standards, with the initial version completed in two months as the sole developer. Managed and led a team of two developers subsequently. Acquired and honed expertise in BI, Big Data, Data Analytics, Indicators, and Data Projection. Ensured compliance with SLAs and robust security measures. The primary clients included prominent organizations in LATAM such as Bombril, Copagaz, and Vale.
Senior PHP/Python Programmer
10/1/2011 - 2/1/2012

Developed and deployed an API for a File Cloud project, which facilitated seamless communication across different platforms. Leveraged expertise in Python and Django to ensure robust functionality and high performance. Delivered the project within tight deadlines, showcasing proficiency in project management and technical execution.
Senior PHP Developer
11/1/2010 - 3/1/2011

Spearheaded the development and optimization of a high-performance mail marketing system, achieving significant improvements in data processing speed and system efficiency. Cultivated expertise in scripting languages geared towards high performance, effectively handling databases with millions of records. Utilized advanced SQL techniques to optimize query performance and maintain data integrity. Designed and implemented scalable database architectures to support intensive data operations, ensuring system reliability and robustness. Integrated advanced performance monitoring and fine-tuning practices to continuously enhance system throughput. Leveraged tools and frameworks suited for large-scale data management, ensuring seamless handling of extensive datasets. Applied best practices in code optimization and system scalability, contributing to a performant and resilient mail marketing platform.
CTO / Founder
8/1/2010 - 3/1/2017

Managed a team of six developers leading to the creation of the Gerente Imob real estate product and a church members management product. Spearheaded website development and developed an in-house PHP framework. Expertise in SEO and SEM, and executed comprehensive marketing campaigns on Facebook Business and Google AdWords, as well as e-mail marketing. Designed customizable web systems for diverse markets including schools, churches, companies, and online stores. Provided consulting services for specific projects, including large portals. Utilized AWS extensively with proficiency in EC2, EBS, CloudWatch, Lambda, SES, SQS, SNS, S3, Route 53, and IAM.
Full-stack / Development Manager
3/1/2010 - 11/1/2010

Developed a standard CMS in MVC, ensuring easy customization and maintenance. Spearheaded projects for major brands, delivering high-quality results that contributed to generating new business opportunities. Gained experience in creating promotional mechanisms, including sweepstakes, rankings, and sending promotional codes. Successfully executed a promotion for a major food and beverage brand involving a drawing and sending SMS coupons. Developed a media portal for distribution at an advertisers' fair for a prominent television network. Additionally, created a personal project involving a promotion with drawing and sending SMS coupons. Demonstrated extensive knowledge in PHP, MVC frameworks, SMS integration, and promotional campaign management.
Web Master
3/1/2008 - 3/1/2010

Developed expertise with large publishing systems and established development standards for high-access portals. Implemented WordPress to replace an outdated blogging system, enhancing the overall user experience and site functionality. Acquired specialized training in SEO, focusing on organic search optimization. Maintained and updated the UOL TV Player, ensuring seamless media streaming and improved performance.