Criston Mascarenhas

At BarrierBreak, I lead the engineering of an Accessibility Automation and Analytics Dashboard — a full-fledged platform that scans, analyzes, and reports accessibility issues across enterprise-scale websites. The system enables accessibility teams to automate audits, visualize WCAG compliance trends, and manage issue remediation efficiently.

Key contributions include:

• Developing an automated scanning engine using Playwright and HTML_CodeSniffer for WCAG rule-based audits.
• Building backend services with Node.js, Express, and PostgreSQL (Drizzle ORM) supporting multi-tenant data and role-based access.
• Implementing scheduled scans, authentication management (HTTP Auth, Cookie Auth, Scripted Login), and secure credential storage.
• Creating data visualization dashboards with React and chart libraries for accessibility insights.
• Adding screenshot reporting for visual issue tracking and a custom tagging system to organize reports across teams.

These implementations reduced manual audit time by over 70%, improved scalability, and enhanced reporting accuracy. I also optimized Playwright parallelization, introduced structured logging with Winston, and streamlined system uptime and reliability.

On the frontend, I focus on building accessible, responsive, and semantic interfaces using React, TypeScript, Zustand, and Tailwind CSS—strictly following WCAG and ARIA standards. I integrate accessibility testing into CI/CD pipelines to catch issues early.

Beyond engineering, I mentor developers, lead code reviews, and ensure clean architecture, modular design, and maintainable codebases.

BarrierBreak GitHub Profile

• Developed and maintained internal design components, ensuring efficient functionality.
• Executed Proof of Concepts (POC) and continuously stayed updated with cutting-edge technology stacks.
• Contributed to adaptui/react-native-tailwind, a collection of components that are accessible, composable, customizable from low level to build your own UI & Design System.

• Developed and maintained a large scale medical supply chain management system, ensuring smooth and efficient operations.
• Successfully migrated the existing codebase from AngularJS to the latest version, Angular 12, enhancing the system's performance and usability.
• Implemented new features and functionalities, improving the overall user experience and streamlining business processes.
• Collaborated with cross-functional teams to gather requirements and ensure alignment with project goals.
• Conducted thorough testing and debugging to deliver a high-quality, error-free product.

Contributed to community initiatives.

Worked in creating UI/UX interfaces and converting design to code.