Full-Stack Developer & QA Automation Engineer

Mingjia Zeng

Cincinnati, OH 513-***-**** ******@****.**.*** Linkedin Github

Summary

Mid-level software developer with expertise in Python, JavaScript, and cloud-backed web applications. Designed responsive React/TypeScript interfaces and Firebase-powered backends to enable real-time booking and user management. Built end-to-end test suites with Selenium and Postman, reducing production bugs by over 20%. Seeking to leverage full-stack and QA skills to deliver scalable, user-focused cloud solutions. EDUCATION

University of Cincinnati 2026

Masters of Engineering, Computer Science

• GPA: 3.7

University of Cincinnati 2023

Bachelor of Science, Computer Science

• GPA: 3.2

SKILLS

• Technology: C#, Python, Selenium, Google Firebase, Snowflake, JavaScript, mySQL, Linux, PostMan, Docker, Jira

• Spoken Languages: Chinese, English

EXPERIENCE

UrbanHikers Cincinnati Mar 2025 - Present

Software Developer Cincinnati

• Developed a responsive user interface with React and TypeScript, building interactive components and dynamic pages for booking walking routes, route discovery, and user profiles, which improved overall user experience

• Engineered a Firebase-powered backend infrastructure on Google Cloud, utilizing Firestore and Node.js cloud functions for real-time data handling, Authentication for secure user identity management and booking information

• Performed end-to-end and blackbox testing using Selenium and PostMan for backend endpoints, authentication processes, and data integrity Divisional Maintenance Group Jan 2022 - Apr 2022

Quality Assurance Intern

• Engineered end-to-end test coverage for the DMG Moneyball App’s front-end (React) and back-end services, leveraging Python-based Selenium automation and API validation via PostMan to ensure data consistency

• Conducted API testing with Postman and recorded test plans and bugs in Jira, uncovering critical defects that were fixed before production

• Executed comprehensive QA strategy including smoke, regression, and integration tests for the DMG MoneyBall App, contributing to a 23% reduction in production bugs

Cincinnati Insurance Co Jan 2021 - May 2021

IT data entry Intern

• Tested third-party policy data integration by manually generating policy numbers with Python scripts and verifying data integrity, ensuring accurate data transfer into CIC’s system

• Tested Company new software ThirtyFour that allows the user to select a variety of policy steps to create policy numbers automatically by utilizing JSON

University of Cincinnati, Department of EECS Jun 2020 - Sep 2020 Student Worker

• Compiled and organized class files, notes, circuit diagrams, and equations for EECS courses, using Python scripts and LaTeX to standardize formatting, which reduced preparation time for professors and improved student access to materials

• Analyzed data for research program regarding mRNA by utilizing Matlab GROUP PROJECTS

Capstone Project – VR Sandbox Game (Unity) 2023

• Collaborated in an Agile team to design and implement the front-end UI in Unity using C#, enabling users to switch environments, start/end sessions, and interact with core game controls

• Developed the Front End panel and features including switching between maps, starting and ending games Created an encryption based upon playfair during the UC Hackathon 2020

• Developed a Python CLI tool implementing the Playfair cipher, prompting users for a key to encrypt plaintext and integrating Git version control for source management

VOLUNTEER & MEMBERSHIP

IEEE 2020 - Present

Member

• Attend tech talks on Computer Vision, Web Development, and Computer Systems

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