03/20/2026 updated

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100 % available

Senior Full-Stack and AI Engineer

Hong Kong, Hong Kong
Only remote
Bachelor's degree / Computer Science
Hong Kong, Hong Kong
Only remote
Bachelor's degree / Computer Science

Profile attachments

LinJingAn.pdf

About me

Senior Full-Stack Developer specializing in React, Next.js, Node.js, Python, and AI. I build scalable SaaS platforms, web applications, and automation systems with clean architecture, strong performance, and user-focused design.

JavaScriptApplication Programming Interfaces (APIs)Artificial IntelligenceAmazon Web ServicesArchitectureAuthenticationsAutomationMicrosoft AzureCloud ComputingDevOpsWeb DevelopmentHealth Insurance Portability and Accountability Act (HIPAA) ComplianceScalabilityPostgreSQLMachine LearningMongoDBMySQLNode.jsOAuthPerformance TuningRedisTensorFlowNext.jsJSON Web TokenSecurity ManagingTypeScriptWeb ApplicationsWebSocketTailwindPyTorchReact.jsSystem AvailabilityLarge Language ModelsExpress.jsGoogle FirebaseBackendFastAPIStripeAngularJSKubernetesGraphQLFront End Software DevelopmentApi DesignNestJSDatabase AdministrationDocker
AI & Machine Learning Development
Advanced implementation of AI-powered features using OpenAI, LangChain, and LLM APIs with PyTorch and TensorFlow for production-grade inference performance

Full-Stack Web Development
Comprehensive development of scalable web applications using React, Next.js, Node.js, and modern JavaScript frameworks with high availability architecture

Cloud Infrastructure & DevOps
Expert deployment and management using AWS, Azure, Docker, Kubernetes with automated CI/CD pipelines and containerized deployments

Database Management
Proficient in PostgreSQL, MySQL, MongoDB, Redis, and Firebase with optimization and scalable architecture design

API Development
Secure REST and GraphQL APIs with authentication, authorization layers, and performance optimization

Security Implementation
OAuth2, JWT, HIPAA compliance, and secure payment flows integration with Stripe and PayPal

Frontend Technologies
Modern frontend development with React, Next.js, Angular, TypeScript, and Tailwind CSS

Backend Technologies
Server-side development using Node.js, NestJS, Express.js, FastAPI, and WebSockets

Languages

EnglishFluent

Project history

Senior Full Stack AI Engineer

Human City
Engineered full-stack applications with React, Next.js, and Node.js, supporting 10K+ concurrent users at 99.9% uptime. Integrated AI-powered features with OpenAI, LangChain, and LLM APIs, increasing automation efficiency by 30% and boosting user engagement. Deployed machine learning models with PyTorch and TensorFlow, achieving production-grade inference performance and reducing latency by 30%.

Software Developer

Kaleidico
Developed responsive web applications using HTML, CSS, JavaScript, and React, improving code maintainability by 35%. Implemented AI-driven features with OpenAI and LLM frameworks, automating workflows and enhancing user experience. Refined and optimized RESTful APIs in Node.js with PostgreSQL and MongoDB, improving data accuracy by 30% and enabling AI-driven analytics.

Full Stack Developer

Infuse
Developed RESTful APIs with PostgreSQL and MongoDB backends, improving data efficiency by 5% while ensuring scalability and security. Built and maintained full-stack applications using React, Next.js, and Node.js, serving 20K+ active users with high availability. Embedded AI-powered features with OpenAI, LangChain, and LLM frameworks, boosting user engagement by 25% and enhancing process automation.

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