José Maldonado
Verified Expert in Engineering
Software Developer
Buenos Aires, Argentina
Toptal member since September 29, 2015
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 not only crafting the right solutions but also ensuring they are effectively implemented, making a meaningful impact on every project he undertakes.
Portfolio
Experience
- CSS - 15 years
- JavaScript - 15 years
- Chrome Extensions - 8 years
- TypeScript - 7 years
- Svelte - 5 years
- Electron - 3 years
Availability
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
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.
Software Engineer - React + Python
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.
- Implemented all the Web Components using React + Redux.
- Implemented a mobile app to streamline inventory control and tracking, enhancing efficiency and accuracy in managing stock levels.
- Created Terraform plugins in Go to integrate various security products, enabling seamless deployment and management of security configurations within the infrastructure as code.
- Developed a directed acyclic graph (DAG)-based task orchestration workflow to automate security model execution, enhancing reusability, scalability, and incident response efficiency.
- Developed and maintained SpotSkim, a web application designed to inspect, inventory, and document POS assets and environments.
Software Engineering Manager
CriticalStart
- Integrated a large language model (LLM) with retrieval-augmented generation (RAG) to assess the veracity of security alerts, improving threat detection and response accuracy.
- Help Enhance the Front End, building and optimizing all the components using React.
- Upgraded a suite of microservices from Python 2 to Python 3, resolving compatibility issues and ensuring long-term support and security compliance.
- 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.
- Optimized S3 storage by implementing lifecycle policies to transition infrequently accessed data to lower-cost storage classes, reducing storage costs by 20%.
- Expanded the capabilities of an ETL pipeline used for ingesting and normalizing security alerts from diverse sources by adding support for additional vendors.
Lead Developer
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.
- Create an innovative look & feel from Figma Designs & JS (React).
- 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.
- 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.
- 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.
Experience
Cyber Operations Risk & Response Platform
https://www.criticalstart.com/our-solutions/managed-detection-response-services/our-platform/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.atapThis 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/eliokoocofjemjjohafbmhmgjmedomkoThis 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/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.pdfThis 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/Education
Certificate in Software Engineering
University of Technology of Belfort-Montbéliard - France
Engineer's Degree (Summa Cum Laude) in Computer Sciences
National University of Tucumán - Argentina
Certifications
AWS Certified Cloud Practitioner
Amazon Web Services
DevOps, Cloud, and Agile Foundations
IBM | via Coursera
UX Design Certificate
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
Tools
Git, JSX, Grunt, Bloomberg, Claude, Visual Studio, Slack, Jira, GitHub
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
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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