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)
Professional Experience
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Associate Design Engineer - Visa Inc.
February 2022 - Present
- Build pixel-perfect layouts, user interface components, and single-page applications for various Visa websites and apps using Flutter for iOS, Android, and Web.
- Collaborate closely with UX designers, software engineers, and product managers.
- Conduct thorough analysis of existing software to identify Usability and Accessibility issues and provide actionable recommendations.
- Stay abreast of the latest trends in user experience and interface design.
- Handle inquiries and support requests from stakeholders.
- Work alongside Design leadership to foster and maintain a motivated team of UX professionals.
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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.
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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.
Professional Skills
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UI/UX
Flutter, React.js, HTML, CSS, JavaScript, Adobe XD, Firebase
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Data Science
Python, R, Tableau, SQL, Keras, TensorFlow, Numpy, Pandas, Matplotlib, SPSS, Weka, Web Scraping
Leadership and Involvement
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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.