Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Crystal Dsouza, a Full Stack Software Engineer with over seven years of experience building scalable web applications using React, TypeScript, JavaScript, Node.js and Python. I’m passionate about turning complex problems into user-friendly, accessible interfaces and robust APIs, and I’m excited by AI-driven, context-aware software that enhances real-world decision making. Across diverse teams and Agile environments, I’ve delivered maintainable code, introduced CI/CD practices, and mentored teammates to raise engineering standards. I enjoy collaborating with product and design to ship end-to-end solutions that create measurable impact.…Hi, I’m Crystal Dsouza, a Full Stack Software Engineer with over seven years of experience building scalable web applications using React, TypeScript, JavaScript, Node.js and Python. I’m passionate about turning complex problems into user-friendly, accessible interfaces and robust APIs, and I’m excited by AI-driven, context-aware software that enhances real-world decision making. Across diverse teams and Agile environments, I’ve delivered maintainable code, introduced CI/CD practices, and mentored teammates to raise engineering standards. I enjoy collaborating with product and design to ship end-to-end solutions that create measurable impact.

Crystal Dsouza

Full Stack Developer, Web Developer, Front-End Developer, +2





Hi, I’m Crystal Dsouza, a Full Stack Software Engineer with over seven years of experience building scalable web applications using React, TypeScript, JavaScript, Node.js and Python. I’m passionate about turning complex problems into user-friendly, accessible interfaces and robust APIs, and I’m excited by AI-driven, context-aware software that enhances real-world decision making. Across diverse teams and Agile environments, I’ve delivered maintainable code, introduced CI/CD practices, and mentored teammates to raise engineering standards. I enjoy collaborating with product and design to ship end-to-end solutions that create measurable impact.…Hi, I’m Crystal Dsouza, a Full Stack Software Engineer with over seven years of experience building scalable web applications using React, TypeScript, JavaScript, Node.js and Python. I’m passionate about turning complex problems into user-friendly, accessible interfaces and robust APIs, and I’m excited by AI-driven, context-aware software that enhances real-world decision making. Across diverse teams and Agile environments, I’ve delivered maintainable code, introduced CI/CD practices, and mentored teammates to raise engineering standards. I enjoy collaborating with product and design to ship end-to-end solutions that create measurable impact.

Available to hire

Hi, I’m Crystal Dsouza, a Full Stack Software Engineer with over seven years of experience building scalable web applications using React, TypeScript, JavaScript, Node.js and Python. I’m passionate about turning complex problems into user-friendly, accessible interfaces and robust APIs, and I’m excited by AI-driven, context-aware software that enhances real-world decision making.

Across diverse teams and Agile environments, I’ve delivered maintainable code, introduced CI/CD practices, and mentored teammates to raise engineering standards. I enjoy collaborating with product and design to ship end-to-end solutions that create measurable impact.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Hindi

Advanced

Marathi (Marāṭhī)

Advanced

German

Beginner

Work Experience

Technology Lead at Infosys Ltd.

April 1, 2023 - August 1, 2024

Delivered reusable React TypeScript components for filter-heavy SPA views with over 1,000 filter values, using Context API, custom hooks, pagination, infinite scroll, lazy loading, and memoisation to maintain performance. Modernised legacy JavaScript with ES6 patterns and refactored hot path UI logic into lookup-table mappings to reduce repeated list scans, improving customer experience. Extended GraphQL API with new queries/mutations and PostgreSQL-backed resolvers/schema to support dashboard data needs, including pagination and incremental loading. Introduced unit and integration testing across four applications (≈75% coverage) with Jest and React Testing Library in TypeScript, promoting test-driven development. Rolled out application-wide logging with Winston and a backend log retrieval endpoint. Led migration to string-based store IDs via backend refactors and JWT handling, and improved service-to-service integration via an API gateway and centralized authentication middleware. A

Technology Analyst at Infosys Ltd.

January 1, 2021 - March 1, 2023

Led ADFS to Azure AD migration across 10 applications, introducing client authentication and building a custom React hook wrapper to integrate Azure frontend auth hooks into a legacy React app while preserving security best practices. Implemented Azure AD SSO using OAuth 2.0/OpenID Connect with JWT validation and refresh token handling; built Node.js microservices and BFF endpoints for integrations; managed secret rotation in Jenkins. Engineered in-store touch/display applications with barcode/RFID workflows, integrating with Scala CMS and deploying on Scala Players; later deployed React and Node.js applications on Raspberry Pi devices. Enabled real-time updates by syncing the web app with Scala Players via WebSockets and delivering notifications using Server-Sent Events in line with event-driven architecture. Coordinated migration and production troubleshooting with DevOps, diagnosing Kotlin issues and resolving token validation failures caused by server timestamp drift, mitigating a

Senior Systems Engineer at Infosys Ltd.

April 1, 2019 - December 1, 2020

Built a role-based React/Redux frontend for a legacy migration with REST API integration and RBAC in Node.js; managed deployments across development, staging and production. Validated UI direction with low-fidelity wireframes and maintained delivery quality through reviews, testing, and pair programming in bi-weekly Agile sprints. Shipped responsive, cross-browser pages with reusable UI components and enhanced Cassandra data modeling within a layered Node.js architecture, while mentoring new joiners. Completed a four-month onsite assignment in Herzogenaurach, Germany, supporting frontend development and collaborating with the product owner to refine requirements and deliver sprint goals.

Systems Engineer at Infosys Ltd.

June 1, 2017 - March 1, 2019

Implemented React UI widgets for rule-based label templates, integrating dynamic fields from external sources and ensuring responsive layout for variable-length content. Resolved drag-and-drop issues in the label editor and aligned UI with the client design system. Increased automated test coverage to over 80% using Nightwatch plus Jasmine and Jest, and facilitated localisation with react-intl for translations and multi-currency display.

Systems Engineer Trainee at Infosys Ltd.

February 1, 2017 - May 1, 2017

Completed Infosys Mysore full-stack integration (AngularJS, MySQL, Python, Google Maps) training.