The University of Adelaide
Master of Computing and Innovation
Adelaide, Australia
Graduated June 2023
Available for software opportunities
Shawn (Jingran) Lyu
Software Developer
Full-stack software engineer with 2+ years of experience building scalable web and mobile applications across the full software lifecycle. Experienced in React, React Native, Node.js, FastAPI, and PostgreSQL, with a strong focus on backend architecture, performance optimization, and automation testing. Proven ability to design and deliver end-to-end systems, including AI-powered applications using embeddings and vector search (pgvector). Combines a solid foundation in computing and electronic engineering with practical industry experience to build efficient, reliable, and scalable solutions.
2+ years building full-stack web and mobile apps with React, React Native, and Node.js
Backend-focused developer experienced with FastAPI, PostgreSQL, SQLAlchemy, Docker, and pgvector
Improves production reliability through database optimization and Playwright end-to-end testing
Builds AI-powered products using embeddings, vector search, and structured data extraction
Education
Academic background
The University of Southampton
Diploma of MicroElectroMechanical Systems
Southampton, United Kingdom
Graduated June 2019
Beijing Jiao Tong University
Bachelor of Electronics Engineering
Beijing, China
Graduated June 2017
Experience
Professional work
Junior Software Engineer
OneTeam Services
Feb 2024 – Apr 2026
• Developed and maintained cross-platform web and mobile applications using React and React Native, improving user experience and system usability. • Designed and implemented backend services with Node.js, enabling efficient API integration and data processing. • Optimized PostgreSQL database performance, improving query efficiency and scalability for production systems. • Built end-to-end automated test suites using Playwright, reducing manual QA effort and increasing release confidence. • Collaborated across frontend, backend, and mobile teams to deliver integrated, production-ready solutions.
Mobile Application Developer (Intern)
KIK Innovation Ltd
Oct 2023 – Feb 2024
• Led the implementation of user segmentation features in a community-focused mobile application. • Collaborated within a small team to design and deliver new features, improving application functionality and user engagement.
Software Developer (Intern)
42 Adelaide
May 2023 – Feb 2024
• Developed strong proficiency in C/C++ and Linux systems programming. • Delivered a technical masterclass, sharing programming knowledge with peers.
Data Science Intern
Ping An Bank
Nov 2020 - Mar 2021
• Enhanced the Q&A robot algorithm through data analysis, collaborating with fellow algorithm team members to achieve an 89% accuracy improvement. • Employed tools like Pyppeteer to develop a web crawler script, streamlining manual tasks and significantly boosting operational efficiency.
Projects
Selected builds
• Built a full-stack AI platform to match resumes with job descriptions using semantic similarity search. • Designed a production-ready backend using FastAPI, PostgreSQL, pgvector, SQLAlchemy, Alembic, and Docker. • Implemented embedding generation and cosine similarity ranking, enabling intelligent job recommendations. • Integrated OpenAI structured outputs to extract and structure resume data. • Developed frontend using Next.js and TypeScript, including Google authentication.
FastAPIPostgreSQLDockerAlembicSQLAlchemypgvector
• Designed and developed a full-stack MERN web application for movie streaming. • Implemented CRUD functionalities. • Utilised Next.js, React, TypeScript, Tailwind, PostgreSQL, Prisma.
ReactTypeScriptNext.jsTailwindPostgreSQLPrisma
Built a MERN application with CRUD workflows, authentication, and chart visualizations for teachers and students to track workload, project progress, and team activity.
ReactTypeScriptNode.jsExpressMongoDBMUI
Designed and optimized the front end for a web simulation that visualizes stability and leader election behavior in an information-passing distributed system.
JavaScriptNode.jsHTMLCSSMongoDB
Mar 2021
E-commerce Website
Created and operated a Shopify e-commerce site, covering front-end UI construction, page setup, sales operations, and delivery coordination.
ShopifyJavaScriptUI Design
Sep 2020
Titanic Survival Prediction
Analyzed, cleaned, and modeled Titanic passenger data using random forests, with exploratory visualizations and correlation analysis.
PythonRandom ForestSeabornMatplotlib
Skills
Technical toolkit
Languages
JavaScriptTypeScriptPythonJavaC/C++
Frontend
ReactReact NativeAngularNext.jsTailwind CSS
Backend
Node.jsExpressFastAPI
Databases
PostgreSQLMongoDBSQL Serverpgvector
Tools & DevOps
DockerGitPlaywrightLinux
More
Training and activities
The Complete SQL Bootcamp
Advanced query writing with PostgreSQL.
2023
Node.js, Express, MongoDB & More
Modern back-end stack training covering Node, Express, MongoDB, Mongoose, APIs, and server-rendered applications.
2023
Microsoft Azure AI Fundamentals (AI-900)
Training in Azure and AI services fundamentals.
2022
Kaggle SQL Course
SQL practice and data querying with Python-based workflows.
2020
Exchange Study
Electrical engineering study at National Chiao Tung University, Taiwan.
2015