Publication
The Art of War Applied To Software Development
https://www.toptal.com/developers/agile/art-of-war-software-development
José is available for hire
Hire JoséJosé Maldonado
Verified Expert in Engineering
Software Developer
Buenos Aires, Argentina
Toptal member since September 29, 2015
Bio
José is an accomplished software engineer with over 15 years of experience, excelling in both enterprise and startup environments. As a hands-on developer and team lead, he showcases a broad skill set, particularly in JavaScript and Python, with a solid foundation in security and automation. José is dedicated to crafting the right solutions and ensuring they are effectively implemented, making a meaningful impact on every project he undertakes.
Portfolio
Toptal Clients
HTML, JavaScript, CSS, Progressive Web Applications (PWAs), Games, Phaser.io...
Termtegrity
Git, Docker, Python, Grunt, React Native, AngularJS, JavaScript, Sass, CSS...
CriticalStart
Git, Docker, Python, Flutter, Dart, Express.js, Node.js, React Native...
Experience
- JavaScript - 15 years
- Node.js - 11 years
- Python - 9 years
- React - 9 years
- TypeScript - 7 years
- Next.js - 5 years
- Django - 5 years
- FastAPI - 3 years
Preferred Environment
Visual Studio, Slack, Jira, Docker, GitHub
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
Full-stack Developer
2015 - PRESENT
Toptal Clients
- Created a Chrome extension that enables automated testing for AI-based chatbots without the need for coding, which served as the first working prototype of bottest.ai and played a key role in securing funding for the startup.
- Implemented CollegeSoccerGuyAI, an AI-driven email assistant to help aspiring student-athletes craft personalized and effective outreach emails to university soccer programs for scholarship opportunities.
- Implemented an AI-powered chatbot for customer service, with NLP and dialogue management, integrated with CRM and ticketing systems, cutting average response times by 60% and automatically resolving over 50% of basic support requests.
- Added new features, fixed bugs, and implemented unit and stress tests for FunnelEnvy, a platform that delivers data-driven growth solutions to boost marketing ROI for B2B, lead generation, and SaaS businesses.
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, Responsive Web Design (RWD), Flask, Web Design, Web Notifications, MERN Stack, Kivy, AI Translation, Translation, Claude, Matplotlib, Prompt Engineering, PHP, CodeIgniter, Medical Software, Google Sign-in, Linux, Data Encryption, OpenAI API, 3D Animation, JSX, React Redux, Pandas, SQL, Database Optimization, Amazon RDS, API Design, Data Integration, Puppeteer, Browser Automation, Google Cloud Platform (GCP), NestJS, ChatGPT, Claude API
Software Engineer
2024 - 2025
Termtegrity
- Led the implementation of a security orchestration, automation, and response (SOAR) platform that facilitates the coordination, execution, and automation of tasks among various stakeholders and tools.
- Developed and maintained SpotSkim, a web application designed to inspect, inventory, and document POS assets and environments.
- Implemented a mobile app to streamline inventory control and tracking, enhancing efficiency and accuracy in managing stock levels.
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, Responsive Web Design (RWD), Web Design, Web Notifications, Test-driven Development (TDD), Linux, API Design, Data Integration, React
Lead Software Engineer
2018 - 2023
CriticalStart
- Implemented an advanced search feature for filtering security alerts based on multiple criteria, improving analyst efficiency by 60%.
- Introduced feature toggles in web applications to control access to experimental features and reduce release risk.
- Built a role-based dashboard for SOC analysts to monitor, trigger, and audit automated incident response actions.
- Refactored and upgraded Threat Analytics Search, a Chrome extension that offers contextual searches, improving its performance and reducing its technical debt.
- Oversaw the development of MobileSOC, a mobile application that delivers real-time notifications and comprehensive alert details to assist users in quickly remediating security threats.
- Successfully built and managed a multi-functional team of over eight members, fostering collaboration and delivering projects on time.
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, Responsive Web Design (RWD), Web Design, Web Notifications, Test-driven Development (TDD), OAuth, Linux, IT Security, JSX, React Redux, API Design, Data Integration, React
Software Engineer
2017 - 2018
Advanced Threat Analytics
- Designed and implemented a playbooks feature enabling users to define custom workflows for automatic resolution of security alerts, resulting in a 20% increase in user productivity.
- Implemented a reports feature, enabling users to view key statistics and make informed, data-driven decisions.
- Developed interactive dashboards and visualizations for data analysis and reporting, resulting in a 20% increase in user engagement.
- Developed a cross-platform mobile app in React Native, consolidating separate Android and iOS native apps into a single, unified codebase, which streamlined development, reduced maintenance efforts, and enabled faster updates.
Technologies: JavaScript, AngularJS, HTML5, Python, Django, Docker, Amazon Web Services (AWS), React, React Native, Redux, PostgreSQL
Lead Developer
2011 - 2017
Securiport
- Led the implementation of an integrated immigration control system (IICS) deployed across multiple international airports in West Africa, playing a key role in uncovering a migrant trafficking network in Senegal.
- Developed a software application for the government of Sierra Leone to manage and print residence and work permits, optimizing the issuance process and enabling the delivery of residence cards in under one hour.
- Integrated Interpol’s FIND service at airports in Ivory Coast and Senegal, enabling authorities to swiftly identify fugitives and play a crucial role in the capture of criminals with Red Notices.
- Led the migration of a suite of databases from SQL Server to PostgreSQL and updated the database layer of dependent applications, resulting in a $20,000 annual reduction in licensing costs.
- Developed a web application to streamline the organization of work shifts at the airport in Ivory Coast, improving scheduling efficiency and communication among staff.
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, Web Design, Web Notifications, MERN Stack, Test-driven Development (TDD), Firebase, Selenium, C++, Learning Management Systems (LMS), Database Optimization, API Design, Data Integration, Electron
Software Developer
2010 - 2011
Candoit
- Designed and implemented a system for managing purchase and work orders for Romipack, making the process more efficient and user-friendly for both clients and sales representatives.
- Designed and implemented a web application for managing purchase orders for Delicity, replacing a phone-based process and reducing errors through digital automation.
- Implemented a custom human resources management tool for AON, enhancing operational efficiency and boosting employee engagement.
- Integrated Rojo Tango’s reservation management system with their CRM platform, streamlining operations and significantly reducing manual data entry.
- Authored software requirements specifications based on client meetings, clearly defining project needs and reducing misunderstandings throughout the development process.
Technologies: JavaScript, jQuery, Java, CSS, Apache Struts, MySQL, HTML5, SQL, Microsoft SQL Server
Experience
Cyber Operations Risk & Response Platform
https://www.criticalstart.com/critical-start-corr-platformI oversaw the creation of CORR, an innovative platform designed to help security teams accelerate the investigation and response to threats without compromising effectiveness.
At the core of CORR is the Trusted Behavior Registry (TBR), a unique technology that automatically resolves false positives at scale. By identifying known good behavior first, the TBR allows security analysts to quickly focus on real threats.
Utilizing CORR significantly reduces investigation and response times, providing confidence that every alert is efficiently resolved.
At the core of CORR is the Trusted Behavior Registry (TBR), a unique technology that automatically resolves false positives at scale. By identifying known good behavior first, the TBR allows security analysts to quickly focus on real threats.
Utilizing CORR significantly reduces investigation and response times, providing confidence that every alert is efficiently resolved.
MobileSOC
https://play.google.com/store/apps/details?id=io.threatanalytics.atapManaged the development of a mobile app for both Android and iOS platforms designed to enhance rapid deployment and containment.
This app offers a mobile-first approach to analyst communication, alert investigation, and response, moving beyond traditional ticketing systems.
Streamlining these processes significantly increases the efficiency of SOC analysts, minimizing the number of security events that necessitate investigation
This app offers a mobile-first approach to analyst communication, alert investigation, and response, moving beyond traditional ticketing systems.
Streamlining these processes significantly increases the efficiency of SOC analysts, minimizing the number of security events that necessitate investigation
Threat Analytics Search
https://chrome.google.com/webstore/detail/threat-analytics-search/eliokoocofjemjjohafbmhmgjmedomkoEnhanced and refactored a Chrome extension to improve code quality for an open-source release while introducing additional customization features.
This extension is invaluable for security analysts, malware hunters, and incident responders, allowing them to leverage the context menu (right-click) in Chrome to perform single or group searches for selected text.
It proves particularly useful for scenarios requiring simultaneous searches of file hashes, IP addresses, or domains across multiple websites.
This extension is invaluable for security analysts, malware hunters, and incident responders, allowing them to leverage the context menu (right-click) in Chrome to perform single or group searches for selected text.
It proves particularly useful for scenarios requiring simultaneous searches of file hashes, IP addresses, or domains across multiple websites.
Integrated Immigration Control System (IICS)
https://securiport.com/iics/Led the development of an immigration control system that is actively deployed at several airports across West Africa.
This system employs biometric identification technology to uniquely identify travelers, enhancing security and efficiency.
It plays a vital role in capturing wanted criminals, detecting tax evaders, and uncovering suspicious travel patterns.
This system employs biometric identification technology to uniquely identify travelers, enhancing security and efficiency.
It plays a vital role in capturing wanted criminals, detecting tax evaders, and uncovering suspicious travel patterns.
SimCo60
http://www.cienciasdelasalud.edu.ar/powerpoints/08_pantas_radiacion.pdfDeveloped a scientific simulation tool to estimate radiation exposure levels through linear regression and statistical analysis for the Semi-Industrial Irradiation Plant (PISI) at the Ezeiza Atomic Center.
This facility specializes in providing ionizing radiation services for the sterilization of medical equipment, food irradiation, and the decontamination of cosmetics.
This facility specializes in providing ionizing radiation services for the sterilization of medical equipment, food irradiation, and the decontamination of cosmetics.
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 presented by the National Academy of Engineering to the top engineers who graduated from an Argentinian university in 2009, recognizing my commitment to the field of engineering and the quality of education I received during my studies.
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
JANUARY 2025 - JANUARY 2028
AWS Certified Cloud Practitioner
Amazon Web Services
MARCH 2024 - PRESENT
DevOps, Cloud, and Agile Foundations
IBM | via Coursera
DECEMBER 2021 - PRESENT
UX Design Certificate
APRIL 2020 - PRESENT
Data Science MicroMaster
UC San Diego
Skills
Libraries/APIs
React, jQuery, Node.js, Vue, REST APIs, API Development, React Redux, D3.js, Puppeteer, MobX, Stripe, Three.js, WebGL, Google API, Bloomberg API, Kivy, Matplotlib, OpenAI API, Pandas, Claude API
Tools
Git, JSX, Grunt, Bloomberg, Claude, Visual Studio, Slack, Jira, GitHub, ChatGPT
Languages
HTML, SQL, CSS, Python, Java, JavaScript, HTML5, TypeScript, Less, Sass, PHP, C#, Dart, Go, C++
Frameworks
Bootstrap, AngularJS, Next.js, Tailwind CSS, Angular, React Native, CodeIgniter, .NET, Sails.js, Flutter, Svelte, Electron, Express.js, Django, Phaser.io, Nuxt.js, Material UI, Selenium, Laravel, Flask, NestJS, Redux, Apache Struts
Paradigms
Database Design, Responsive Web Design (RWD), Test-driven Development (TDD), Unit Testing, Mobile Development, Agile, Scrum, UX Design, Automation, DevOps
Storage
PostgreSQL, MySQL, SQLite, Databases, Microsoft SQL Server, MongoDB, NoSQL, Redis, Data Integration, Elasticsearch
Industry Expertise
Web Design, Trading Systems
Platforms
Android, Firebase, Mobile, Vercel, Docker, Amazon Web Services (AWS), Heroku, AWS Lambda, WordPress, Linux, Google Cloud Platform (GCP)
Other
Software Development, Software Engineering, Full-stack, Technical Leadership, Web Development, Front-end Development, APIs, Architecture, Leadership, Minimum Viable Product (MVP), Front-end, Dashboards, Data Visualization, 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), Google Sign-in, Pixel Perfect, Artificial Intelligence (AI), UI Automation, Web App Automation, SDK Development, Scraping, Supabase, Web Notifications, MERN Stack, 3D Animation, Database Optimization, API Design, Browser Automation, WebSockets, IoT Security, UX Research, Games, eCommerce, Google BigQuery, Apps, Data Science, Machine Learning, Medical Software, FastAPI, Single Sign-on (SSO), 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, Financial Markets, Trading, Web Crawlers, Web Scraping, AI Translation, Translation, OAuth, Learning Management Systems (LMS), Prompt Engineering, Data Encryption, IT Security, Amazon RDS
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