Depeng Sun

Full-stack Developer @ Karis

About

Full-Stack Web Developer with more than 4 years of coding experience, including over 1 year in professional roles. Passionate about building scalable and high-performance web applications with a focus on clean code, security, and efficiency. Experienced in modern frameworks like React.js, Next.js, and Node.js, with expertise in authentication, database optimization, and cloud deployment. Skilled in Agile development, CI/CD pipelines, and tools like Docker and RESTful APIs to streamline workflows. -JavaScript (ES6+), TypeScript, HTML5, CSS3, React.js, Next.js (SSR, SSG), Redux, jQuery, Node.js, SASS, Tailwind CSS, Bootstrap, Chakra UI, Webpack, Babel, npm, yarn, ESLint, TSLint -Node.js, NestJS, Express.js, Python, C++, C, Security (JWT, Rate Limiting, Helmet, CORS, IP Filter), Stripe, Winston, Sanity IO, WordPress -Jest, Unit Testing, Integration Testing -AWS (EC2, S3, SNS, Lambda, API Gateway, CloudFront, IAM, CloudWatch, DynamoDB Atlas), Netlify (CI/CD, Serverless Functions, UAT), Azure (Functions, Communication Service, Speech Service) -Microsoft SQL Server 2019, MySQL, MongoDB, Drant, Redis -OpenAI API, Claude API, RAG (Retrieval-Augmented Generation), LangChain -Git, Jira, Slack, Swagger, RESTful API, JSON, AJAX, Postman, Cursor, Docker, Stripe API, Google Maps API, Instagram Graph API, Yinbao API, Jest, Cypress, GitHub Actions, GoDaddy (Domain Integration & Deployment)

Country

Australia

City

Greater Adelaide Area

Industry

Computer Software

Skill

Client Side, API Development, Web Applications, NestJS, Retrieval-Augmented Generation (RAG), MongoDB, Open API, LangChain, docker, Redis, Full-Stack Development, TypeScript, Stripe (Software), Tailwind CSS, Chakra ui, Amazon Web Services (AWS), Serverless Framework, Sanity IO, sanity, Next.js

Experience

Full-stack Developer

Karis

2025-11 - 2026-5 · 7 mos

United States

Full-stack Web Developer

Anystay

2025-2 - 2025-5 · 4 mos

Brisbane, Queensland, Australia

-Contributed to a property management platform connecting tenants with service providers (e.g., plumbers, electricians). -Built responsive, interactive UI with React.js, TypeScript, Recoil, Framer Motion, and Tailwind CSS, integrated with AWS Amplify, AppSync (GraphQL), and Cognito Auth. -Developed scalable APIs with NestJS and .NET, deploying on AWS Lambda, DynamoDB, S3, and SES via Serverless Framework. -Implemented complex data processing (ICS, CSV, geolocation), real-time features, and authentication with JWT and Zod. -Practiced TDD using Jest, ts-jest, and Chai; improved dev experience with serverless-offline and IAM-per-function optimization. -Collaborated in a 15-member Agile team using Jira, Slack, Gather, Confluence, and Notion. -Integrated Sentry, Mixpanel, Segment, and Flagsmith for observability, analytics, and feature control. -Currently building Dispatch AI, an intelligent assistant that matches tenants with service providers via context-aware queries.

Web Developer

Ailurotech Solutions

2024-3 - 2024-12 · 10 mos

Adelaide, South Australia, Australia

Junior Web Developer

Ailurotech Solutions

2024-3 - 2024-6 · 4 mos

澳洲南澳大利亚州阿德莱德

Started as an intern, contributing to the development of dynamic websites and CMS-based solutions. Transitioned to a part-time role, focusing on creating scalable web applications using modern frameworks and tools. -Designed and implemented responsive websites using WordPress, React.js, and Next.js. Integrated and customized Sanity.io as a headless CMS to enhance content management workflows. -Developed reusable components and optimized frontend performance with HTML5, CSS, JavaScript, and Node.js. -Collaborated with cross-functional teams to deliver high-quality, client-focused solutions. Utilized tools like GitHub, Twig (Template Engine), ACF, and Timber to ensure maintainable and scalable codebases.