Hi, I'm Karlie Guan, a full-stack developer specializing in Next.js, TypeScript, and React. I have a passion for creating scalable web applications and secure data management solutions, blending my skills in frontend and backend technologies to deliver seamless user experiences. I thrive in fast-paced environments and enjoy mastering new technologies quickly to craft high-quality solutions. Throughout my career, I've worked remotely for organizations like the Spanish National Research Council and a stealth startup, focusing on multilingual systems, ML deployment, UX/UI design, and cloud technologies including AWS. I have strong collaborative skills and a keen eye for optimizing applications, developing reusable components, and integrating robust testing practices to ensure excellent software quality.

Karlie Guan

Hi, I'm Karlie Guan, a full-stack developer specializing in Next.js, TypeScript, and React. I have a passion for creating scalable web applications and secure data management solutions, blending my skills in frontend and backend technologies to deliver seamless user experiences. I thrive in fast-paced environments and enjoy mastering new technologies quickly to craft high-quality solutions. Throughout my career, I've worked remotely for organizations like the Spanish National Research Council and a stealth startup, focusing on multilingual systems, ML deployment, UX/UI design, and cloud technologies including AWS. I have strong collaborative skills and a keen eye for optimizing applications, developing reusable components, and integrating robust testing practices to ensure excellent software quality.

Available to hire

Hi, I’m Karlie Guan, a full-stack developer specializing in Next.js, TypeScript, and React. I have a passion for creating scalable web applications and secure data management solutions, blending my skills in frontend and backend technologies to deliver seamless user experiences. I thrive in fast-paced environments and enjoy mastering new technologies quickly to craft high-quality solutions.

Throughout my career, I’ve worked remotely for organizations like the Spanish National Research Council and a stealth startup, focusing on multilingual systems, ML deployment, UX/UI design, and cloud technologies including AWS. I have strong collaborative skills and a keen eye for optimizing applications, developing reusable components, and integrating robust testing practices to ensure excellent software quality.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Advanced
Chinese
Fluent

Work Experience

Full Stack developer at Spanish National Research Council
September 1, 2024 - Present
Worked remotely to integrate multilingual codebases between Spanish and UK platforms using Next.js, TypeScript, and React. Enhanced a Python-based CV generator with multiple language support. Implemented secure data management systems with Prisma and Docker to support multi-region development databases. Optimized randomization algorithms to match regional applicant requirements and developed custom data export and visualization tools for research teams. Resolved data consistency issues and integrated critical infrastructure services including Mailgun. Analyzed and optimized job crawler codebase to support research needs.
Full Stack Developer (UX/UI Focus) at Stealth Startup
November 1, 2024 - August 27, 2025
Led end-to-end UX/UI design processes using Figma and Figjam, creating wireframes and final designs. Built proof-of-concept web apps with Next.js, TypeScript, and React featuring real-time data processing and responsive UI components using ShadCN library. Ensured cross-platform compatibility and collaborated on large language model evaluation and deployment documentation. Supported ML model deployment on AWS SageMaker and conducted endpoint testing.
Software Engineering Stream Student at Code First Girls Degree Program
September 1, 2023 - August 27, 2025
Completed an intensive 16-week software development course with distinction (97%). Independently integrated OpenAI API with PyGame to expand game content variety and optimized application performance using Threading for login and API calls. Collaborated on group projects using Jira. Developed full-stack applications in Python, Flask, and MySQL structured on object-oriented principles. Delivered project: Stray Whiskers.
Software Development Student at Northcoders
June 1, 2023 - August 27, 2025
Built and deployed RESTful APIs backed by PostgreSQL supporting CRUD operations. Created a QA automation suite with 56 Jest test cases and engineered 5 reusable React components with Material UI. Developed secure user authentication using bcrypt with password hashing. Implemented interactive navigation with conditional React state rendering and user-friendly validation forms with tappable rating systems. Optimized error handling and database seeding. Contributed to a full-stack e-learning platform project following best practices. Projects included Karlie Games Backend and Frontend.

Education

BBA - Business Administration and Management at Jinan University
January 11, 2030 - August 27, 2025

Qualifications

Distinction in Software Engineering Stream
May 1, 2023 - September 1, 2023

Industry Experience

Software & Internet, Education, Professional Services, Life Sciences, Government