Jiahua Ma

Education

• Master of Science in Informatics (Human-Computer Interaction) - The Pennsylvania State University (2020-2021)
• Bachelor of Science in Applied Data Sciences - The Pennsylvania State University (2016-2020)

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Professional Experience

• Lead Front End Engineer - Visa Inc.

  February 2022 - Present
  • Build engaging, usable, and accessible UI applications/components/code libraries for mobile and web - in the form of Flutter/Dart and technical notes.
  • Analyze existing software for Usability and Accessibility issues and provide recommendations for improvement.
  • Work with a diverse team of product owners, UX designers, and developers in a fast-paced environment, with quick iterative cycles.
  • Evangelizing UI/UX front-end best practices and Accessibility for mobile and web.
  • Fielding inquiries and requests for support from stakeholders.
  • Work with Visa UX leadership team to attract, build, and maintain an engaged team of UX professionals across the globe.
  • Lead the development of the Visa Product Design System mobile component library, driving key technical decisions and overseeing the creation of critical mobile front-end components. Personally contributed to over 50% of the mobile components, ensuring the scalability and maintainability of Visa’s mobile platforms.

• Co-founder, Front-end Lead - PsySpace

  June 2020 - February 2022
  • Designed and built an application to provide spontaneous and personalized mental health support to emerging adults.
  • Drafted the application prototype with Adobe XD.
  • Built the application front-end using Flutter and employed the MVVM data architecture.
  • Designed a NoSQL database in Firebase Firestore for real-time data rendering.
  • Used Deep Learning approach to build multi-label classification models on students’ mental health challenges.
  • Lead a group of six members to develop a mental health content library integrated into the application.

• Research Assistant - Penn State: User Agency Lab in College of IST

  May 2019 - December 2021
  • Co-authored a paper accepted at The 23rd ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW 2020).
  • Designed an application to help ride-sharing drivers reduce cost on tires using Adobe XD.
  • Built a mobile application prototype with Flutter and Firebase that was presented to the Independent Drivers Guild.
  • Built a model based on a plugin that better reflected the fairness of individual tasks determined by experts on Amazon Mechanical Turk (AMT).
  • Executed data scraping on AMT and constructed a database using MySQL for content analysis.
  • Analyzed comments left on TurkOpticon (a plugin of AMT which workers can rate requesters and tasks) by coding repeated information with sentiment analysis and statistical analysis in R.

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Professional Skills

• UI/UX

  Flutter, React.js, HTML, CSS, JavaScript, Adobe XD, Firebase

• Data Science

  Python, R, Tableau, SQL, Keras, TensorFlow, Numpy, Pandas, Matplotlib, SPSS, Weka, Web Scraping

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Leadership and Involvement

• Vice President, Stage Manager, Actor, Director, Director's Assistant

  • Served as stage manager in drama Rhinoceros in Love.
  • Directed skit Oblivion on Penn State University Chinese Students and Scholars Association 2019 Mid-Autumn Festival Gala. Performed in drama Mumble Jumble as the Bulb and the Japanese Student. Assisted the play as director's assistant.