Tahsina Saosun

New York, NY 10009 | 347-759-2454 | tahsinasaosun@gmail.com

linkedin.com/in/tsaosun | github.com/tsaosun

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Technical Skills

Frontend Technologies

React, Angular, TypeScript, JavaScript (ES6+), HTML5, CSS3, Redux, React Hooks, Component-Driven Development

Tools & Platforms

Git/GitHub, Node.js, npm/yarn, Webpack, REST APIs, Firebase, Splunk, JAWS, VoiceOver

Specialized Skills

Web Accessibility (WCAG), Responsive Design, Performance Optimization, Cross-Browser Compatibility, Agile/Scrum

Additional Languages

Java, C, C++, Python, SQL

Professional Experience

Front End Software Engineer Jan 2025 – July 2025
Morgan Stanley, New York, NY | E*TRADE (ET) Financials Team
  • Architected React components for redesigned holdings and positions page, collaborating with backend team to define API contract and contribute mock data for 100k+ active E*TRADE users
  • Partnered with Product Managers and UX designers to evaluate component library options and recommend reusable design patterns, improving development velocity by establishing consistent UI standards
  • Implemented responsive layouts ensuring cross-device compatibility for desktop, tablet, and mobile users
Front End Software Engineer Feb 2023 – Jan 2025
Morgan Stanley, New York, NY | E*TRADE (ET) Trading Power Team
  • Developed React features for Time and Sales view displaying real-time trade data and Calendar component for order tracking, serving 50k+ daily active traders with sub-second data refresh rates
  • Debugged and resolved critical user experience issues across multiple application flows, reducing customer support tickets by 25% through proactive bug fixes and enhanced error handling
  • Documented and refined code release processes for change management requests, establishing best practices adopted by 3 parallel development teams
  • Conducted code reviews focusing on React best practices, TypeScript type safety, and performance optimization
Front End Software Engineer June 2022 – Feb 2023
Morgan Stanley, New York, NY | Morgan Stanley Online (MSO) Trading Team
  • Resolved critical bugs affecting order submission and fulfillment for trade orders, ensuring 99.9% uptime for high-net-worth client transactions
  • Recipient of Platform Stability recognition award for contributions to MSO Client Channels fleet in Wealth Management Technology department
Full Stack Software Engineer March 2021 – June 2022
Morgan Stanley, New York, NY | Morgan Stanley Online (MSO) Markets + Research Team
  • Collaborated with cross-functional teams and queried Splunk logs to detect and resolve anomalies in Markets & Research application views, reducing incident response time by 40%
  • Debugged directly with international clients, Product Managers, and stakeholders to resolve display issues across devices and operating systems, ensuring responsive design for iOS, Android, Windows, and macOS platforms
  • Led frontend migration from JavaScript/jQuery to Angular framework, modernizing application architecture for 20k+ high-net-worth users with improved performance and maintainability
Front End Software Engineer Nov 2019 – March 2021
Morgan Stanley, New York, NY | Morgan Stanley Online (MSO) Common Account Opening Team
  • Championed web accessibility initiatives, implementing WCAG 2.1 AA compliance across Common Account Opening flow, including visual contrast enhancements for users with low vision
  • Integrated JAWS and VoiceOver screen reader support, ensuring full keyboard navigation accessibility for users with disabilities across entire application flow
  • Collaborated with accessibility consultants to meet Web Content Accessibility Guidelines (WCAG) standards, establishing accessibility testing protocols adopted company-wide
  • Contributed bug fixes to internal Common User Interface (CUI) Angular component library, including country selection dropdown and group checkbox components used by 15+ development teams
  • Delivered UI features, bug fixes, and accessibility improvements powering client-facing applications that opened 200k+ wealth management accounts in 2020
  • Organized and presented sprint retrospective accomplishments to parallel teams in larger MSO Wealth Management Technology fleet meetings
Application Developer Trainee Aug 2019 – Nov 2019
Morgan Stanley, New York, NY | Technology Analyst Program (TAP)
  • Completed rigorous 10-week Technology Analyst Program covering concurrent programming, application services, and functional programming in Scala with internal instructors
  • Built Proof of Concept (POC) full-stack trading system using Java, Angular, and DB2 in collaborative team environment
  • Developed AI chatbot with optimized knowledge base access using TWiki integration

Education

Bachelor of Arts in Computer Science Aug 2015 – May 2019
Barnard College, Columbia University, New York, NY

Relevant Coursework: Advanced Programming (C/C++), Advanced Software Engineering, Computer Science Theory, Introduction to Databases, Fundamentals of Computer Systems, Introduction to Project Management (Agile/Scrum), Calculus III, Linear Algebra

Awards & Honors

  • Platform Stability Recognition Award – Morgan Stanley Wealth Management Technology (2022)
  • Dean's List, Gertrude Rosenstein Scholarship, The Bassi Family Scholarship – Barnard College
  • Rewriting the Code Fellow, CU WICS Grace Hopper Scholar, New York Academy of Sciences Next Scholars Mentee