José is available for hire

José Maldonado

Verified Expert in Engineering

Software Developer

Buenos Aires, Argentina

Toptal member since September 29, 2015

Expertise

Software Development Software Engineering Front-end Full-stack Development Web Development Full-stack CSS JavaScript HTML5 Git jQuery Node.js REST APIs Bootstrap Vue Sails.js Phaser

Bio

José is a skilled software developer with a computer engineering degree and experience in web development, mobile apps, and bug fixing. He enjoys learning new technologies, contributing to open source projects, and working on interesting and challenging projects.

Portfolio

Termtegrity

Git, Docker, Python, Grunt, React Native, AngularJS, JavaScript, Sass, CSS...

Toptal Clients

HTML, JavaScript, CSS, Progressive Web Applications (PWAs), Games, Phaser.io...

Critical Start

Git, Docker, Python, Flutter, Dart, Express.js, Node.js, React Native...

Experience

JavaScript - 14 years API Integration - 12 years Chrome Extensions - 6 years API Development - 5 years Google API - 3 years Artificial Intelligence (AI) - 3 years Vercel - 2 years Supabase - 2 years

Availability

Part-time

Preferred Environment

Windows, Git, Sublime Text

The most amazing...

...software I've developed is an immigration control system that was instrumental in uncovering a network of migrant traffickers in Senegal.

Work Experience

Software Engineer

2017 - PRESENT

Termtegrity

Oversaw the implementation and maintenance of several Vue applications.
Implemented a mobile app for Android and iOS using React Native.
Transformed the existing web application into a single-page application.

Technologies: Git, Docker, Python, Grunt, React Native, AngularJS, JavaScript, Sass, CSS, Angular, Progressive Web Applications (PWAs), Bootstrap, HTML, Software Development, Mobile Development, Web Development, HTML5, Automation, Go, Front-end Development, APIs, Mobile, Manual QA, QA Testing, REST APIs, User Experience (UX), User Interface (UI), Minimum Viable Product (MVP), DevOps, Cloud, SDK Development, API Development, Tailwind CSS, Front-end, Dashboards, Data Visualization, Redis, API Integration, Supabase

Full-stack Developer

2015 - PRESENT

Toptal Clients

Implemented single-page applications (SPA) that consume REST APIs.
Handled the implementation of a real-time server using WebSockets to host multiplayer games.
Applied implementation of integration layers between applications and third-party services.
Maintained and implemented plugins for the content management system (CMS).
Integrated a Chrome Extension with JavaScript and React for web scraping.
Updated a REST API developed with Python and Django to add new endpoints.
Added new functionalities and fixed bugs to HTML5-based games.
Implemented and improved UI themes for the eCommerce site.
Converted PSD template images into interactive HTML web pages.
Implemented a Chrome extension for browser automation.

Technologies: HTML, JavaScript, CSS, Progressive Web Applications (PWAs), Games, Phaser.io, Cordova, Node.js, WebSockets, AngularJS, jQuery, Sass, eCommerce, Google BigQuery, Elasticsearch, Django, Python, React, MobX, Chrome Extensions, Unit Testing, Angular, Sails.js, Express.js, Full-stack, Amazon Web Services (AWS), Bootstrap, Software Development, Open Source, Apps, Web Development, Stripe, HTML5, Front-end Development, APIs, Material UI, Manual QA, TypeScript, SDKs, REST APIs, CTO, OpenAI, Leadership, FastAPI, AI Integration, User Experience (UX), User Interface (UI), Google API, Vercel, Pixel Perfect, Minimum Viable Product (MVP), DevOps, Natural Language Processing (NLP), Artificial Intelligence (AI), Large Language Models (LLMs), Payment Processing, UI Automation, Web App Automation, Next.js, SDK Development, API Development, Cryptocurrency APIs, Tailwind CSS, Front-end, Dashboards, Data Visualization, Full-stack Development, NoSQL, Redis, Heroku, AWS Lambda, Lambda Functions, Laravel, Event Ticketing, Sports Websites, Scraping, API Integration, Supabase, Financial Markets, Trading, Bloomberg, Bloomberg API, Database Design, Web Crawlers, Web Scraping, Trading Systems

Software Engineering Manager

2018 - 2024

Critical Start

Developed and maintained a web application for managing incident security alerts.
Built and maintained a mobile application for iOS and Android for managing security products.
Supported users with issues on both the web and mobile applications.
Created an application for managing and running Docker containers.
Led a team of UX, front-end, and mobile developers.
Implemented a design system to standardize the look and feel of the web applications.
Applied data visualization solutions using the D3.js framework.
Implemented a Chrome extension for adding new methods of contextual search.

Technologies: Git, Docker, Python, Flutter, Dart, Express.js, Node.js, React Native, AngularJS, JavaScript, Vue, jQuery, CSS, HTML5, Android, Progressive Web Applications (PWAs), Django, Sass, Elasticsearch, Bootstrap, Amazon Web Services (AWS), UX Design, D3.js, Unit Testing, Chrome Extensions, Svelte, Nuxt.js, HTML, Software Development, Software Engineering, UX Research, Open Source, Apps, Data Science, Machine Learning, Mobile Development, Technical Leadership, Software Architecture, Web Development, TypeScript, Front-end Development, APIs, Mobile, Manual QA, QA Testing, Architecture, Web Security, REST APIs, CTO, OpenAI, Leadership, AI Integration, User Experience (UX), User Interface (UI), Single Sign-on (SSO), Scalability, SDK Development, API Development, Cryptography, Applied Cryptography, Front-end, Dashboards, Data Visualization, Redis, API Integration, Databases

Front-end Developer

2017 - 2018

Advanced Threat Analytics (acquired by Critical Start)

Developed and maintained the main site, implemented new features, and detected and fixed bugs.
Created a mobile application for iOS and Android using React Native.
Integrated external services into the main site and the mobile app.
Supported users with issues on the leading site and deployed fixes to production.

Technologies: Git, Docker, Python, Grunt, React Native, React, AngularJS, JavaScript, Sass, CSS, Angular, Bootstrap, Unit Testing, HTML, Software Development, Software Engineering, Apps, Web Development, Firebase, HTML5, Front-end Development, APIs, Manual QA, QA Testing, Web Security, REST APIs, Leadership, User Experience (UX), User Interface (UI), Single Sign-on (SSO), Minimum Viable Product (MVP), Front-end, Dashboards, Data Visualization, API Integration, Supabase

Lead Developer

2011 - 2017

Securiport

Developed and maintained IICS, an integrated immigration control system currently used at several international airports from West Africa.
Created an HTML5 application for employee supervision.
Integrated the FIND service from INTERPOL at the Ivory Coast and Senegal airports.
Designed and implemented software for the management and printing of residence and work permits for the government of Sierra Leone.
Managed teams of up to six people using Agile methodologies.

Technologies: Git, Less, CSS, HTML5, Node.js, React, AngularJS, jQuery, JavaScript, PostgreSQL, MySQL, Microsoft SQL Server, .NET, C#, SQL, SQLite, Full-stack, Unit Testing, HTML, Software Development, Software Engineering, Apps, Technical Leadership, Software Architecture, Web Development, Front-end Development, APIs, MongoDB, Manual QA, Architecture, SDKs, Leadership, User Experience (UX), User Interface (UI), Google API, Front-end, Full-stack Development, NoSQL, WordPress, API Integration, Database Design, Databases

Full-stack Developer

2010 - 2011

Candoit

Designed and implemented a system for managing purchase and work orders for Romipack.
Implemented and designed a web application for managing purchase orders for Delicity.
Handled the implementation of a human resources management tool for AON.
Developed a reservation management app for Rojo Tango.

Technologies: CodeIgniter, PHP, Android, jQuery, JavaScript, CSS, HTML, PostgreSQL, MySQL, Java, SQL, Full-stack, Software Development, Open Source, Web Development, HTML5, Front-end Development, Medical Software, Google Sign-in, Pixel Perfect, Payment Processing, Selenium, Front-end, Full-stack Development, C++, Database Design, Databases

IT Intern

2009 - 2009

Institute of High Voltage and Energy Transmission

Developed an application for managing experiments and maintaining the institute's website.
Modernized and maintained the laboratory's website.
Migrated a database with data about experiments from Excel to MySQL.

Technologies: JavaScript, CSS, HTML, MySQL, Java, SQL, Open Source, Full-stack, Front-end, Full-stack Development, C++, Database Design, Databases

Experience

Zero Trust Analytics Platform

https://www.criticalstart.com/our-solutions/managed-detection-response-services/our-platform/

ZTAP is designed to help security teams get measurably faster at investigating and responding to threats without sacrificing effectiveness. Within ZTAP is the Trusted Behavior Registry™ (TBR), built to resolve false positives at scale automatically. The TBR is one-of-a-kind technology focused on identifying known good behavior first so that security analysts can move quickly to investigate and respond to real threats. Leveraging ZTAP dramatically reduces investigation and response time and gives you the confidence that every single alert is resolved.

MobileSOC

https://play.google.com/store/apps/details?id=io.threatanalytics.atap

A mobile app for Android and iOS that allows faster deployment and containment. The app provides a mobile-first approach to analyst communication, alert investigation, and response beyond a simple ticketing app, which increases the efficiency of SOC analysts by reducing the number of security events that require investigation.

Threat Analytics Search

https://chrome.google.com/webstore/detail/threat-analytics-search/eliokoocofjemjjohafbmhmgjmedomko

A Chrome extension for security analysts, malware hunters, and incident responders, enabling the use of the context menu (right-click) in Chrome to conduct single or group searches for the selected text. The most useful scenarios are when you need to search a file hash, IP address, or domain across multiple websites at once.

Integrated Immigration Control System (IICS)

Implemented an immigration control system currently used in several airports in West Africa, which allows for the capture of wanted criminals, detection of tax evaders, and discovery of suspicious travel patterns.

SimCo60

http://www.cienciasdelasalud.edu.ar/powerpoints/08_pantas_radiacion.pdf

Implemented a scientific simulation tool for estimating radiation exposure levels, developed for the Semi-Industrial Irradiation Plant (PISI) at the Ezeiza Atomic Center, a facility that provides services of ionizing radiation exposure for sterilization of medical equipment, irradiation of food, and decontamination of cosmetics.

Patrulla Tu Planeta

https://www.amazon.com/-/es/Lester-del-Rey-ebook/dp/B092RKZ2SW/

Translation, from English to Spanish, of "police your planet," a science fiction novel about a journalist deported to Mars, initially published in 1953 and written by Lester del Rey, an American science fiction author and editor.

Best Graduates in Engineering Careers Award

https://acading.org.ar/premio-ing-isidoro-marin-a-los-mejores-egresados-de-carreras-de-ingenieria-de-universidades-argentinas/

An award was granted in 2010 by the National Academy of Engineering to the best engineers who graduated from an Argentinian university in the year 2009 in recognition of their dedication to excellence.

Education

2009 - 2009

Certificate in Software Engineering

University of Technology of Belfort-Montbéliard - France

2004 - 2009

Engineer's Degree (Summa Cum Laude) in Computer Sciences

National University of Tucumán - Argentina

Certifications

MARCH 2024 - PRESENT

DevOps, Cloud, and Agile Foundations

IBM | via Coursera

DECEMBER 2021 - PRESENT

UX Design Certificate

Google

APRIL 2020 - PRESENT

Data Science MicroMaster

UC San Diego

Skills

Libraries/APIs

React, jQuery, Node.js, Vue, REST APIs, API Development, D3.js, MobX, Stripe, Three.js, WebGL, Google API, Bloomberg API

Tools

Git, Grunt, Bloomberg

Languages

HTML, CSS, Python, Java, JavaScript, HTML5, TypeScript, Less, Sass, SQL, PHP, C#, Dart, Go, C++

Frameworks

Bootstrap, AngularJS, Angular, React Native, CodeIgniter, .NET, Sails.js, Flutter, Svelte, Next.js, Tailwind CSS, Express.js, Django, Phaser.io, Nuxt.js, Material UI, Selenium, Laravel

Paradigms

Database Design, Unit Testing, Mobile Development, Agile, Scrum, UX Design, Automation, DevOps

Storage

PostgreSQL, MySQL, SQLite, Databases, Microsoft SQL Server, MongoDB, NoSQL, Redis, Elasticsearch

Platforms

Android, Firebase, Mobile, Docker, Amazon Web Services (AWS), Vercel, Heroku, AWS Lambda, WordPress

Industry Expertise

Trading Systems

Other

Software Development, Software Engineering, Full-stack, Technical Leadership, Web Development, Front-end Development, APIs, Architecture, Leadership, Minimum Viable Product (MVP), Front-end, Dashboards, Full-stack Development, API Integration, Cordova, Progressive Web Applications (PWAs), Open Source, Chrome Extensions, Software Architecture, Manual QA, QA Testing, SDKs, Web Security, CTO, OpenAI, 3D Modeling, AI Integration, User Experience (UX), User Interface (UI), Pixel Perfect, Artificial Intelligence (AI), UI Automation, Web App Automation, SDK Development, Data Visualization, Scraping, WebSockets, IoT Security, UX Research, Games, eCommerce, Google BigQuery, English-Spanish Translation, Apps, Data Science, Machine Learning, Medical Software, FastAPI, Single Sign-on (SSO), Google Sign-in, Natural Language Processing (NLP), Scalability, Cloud, Large Language Models (LLMs), Payment Processing, Cloud Computing, Cryptography, Applied Cryptography, Cryptocurrency APIs, Lambda Functions, Event Ticketing, Sports Websites, Supabase, Financial Markets, Trading, Web Crawlers, Web Scraping

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