09/25/2026 updated
100 % available
Senior Full-Stack Product Engineer
Florina, Greece
Only remote
Bachelor of Computer Science (Central South University — Changsha, China)About me
Senior Full-Stack Product Engineer (7+ years) building & shipping SaaS and AI-powered products. Proven track record in founder-led teams owning the entire product lifecycle, from translating business needs into architecture to implementing, deploying, and optimizing live production systems.
JavaScriptPHPC Sharp (Programming Language)CodeIgniterPython (Programming Language)LaravelPostgreSQLMongoDBNode.jsQt (Software)Next.jsTypeScriptPostmanMernReact.js
MERN Stack Development
Over 7 years of hands-on experience architecting and deploying cutting-edge web applications using MongoDB, Express, React, and Node.js. Design, coding, and modification of 20+ enterprise web applications from layout to function according to client specifications.
Front-End Development (JavaScript, TypeScript, React, Next.js)
About 7 years of front-end development experience specializing in JavaScript, TypeScript, React, and Next.js. Development of complex single-page applications with reusable components, state management using Redux or Context API, and server-side rendering for improved SEO and performance.
Back-End Development & API Architecture
Strong expertise in back-end development using PHP, Laravel, CodeIgniter, Node.js, and Express. Design of RESTful and GraphQL API architectures ensuring flexibility, performance, and ease of consumption for front-end and mobile applications, with authentication via OAuth 2.0 and JWT tokens.
Cloud Services (AWS, Firebase)
Orchestration of cloud environments using AWS services such as EC2, S3, Lambda, and RDS. Implementation of Firebase features including Firestore, Authentication, Cloud Functions, and Hosting to build real-time applications, as well as AWS IAM policies and Firebase security rules for access control.
Database Management (MySQL, PostgreSQL, MongoDB)
Deep understanding of database management systems including MySQL, PostgreSQL, SQLite, MongoDB, CosmosDB, and Firebase. Optimization of database schemas and queries to support CRM operations efficiently, improving data retrieval time by 34%.
Performance Optimization & Webpack
Bundling of web assets using Webpack resulting in a 24% decrease in page load time. Contribution to performance optimizations that reduced API response times by approximately 20% through query tuning and caching strategies.
TypeScript & Code Quality
Bringing type safety and enhanced tooling to JavaScript projects, reducing bugs and improving developer productivity through static type checking and IntelliSense. Architecture of scalable and maintainable codebases employing best practices such as modularization and design patterns.
Developer Tools (Git, Docker, Postman, Azure)
Proficiency with developer tools including Git, VS Code, GitHub, AWS Lambda, AWS S3, Google Firebase, Microsoft Azure, Postman, and Docker for version control, deployment, API testing, and containerization.
Over 7 years of hands-on experience architecting and deploying cutting-edge web applications using MongoDB, Express, React, and Node.js. Design, coding, and modification of 20+ enterprise web applications from layout to function according to client specifications.
Front-End Development (JavaScript, TypeScript, React, Next.js)
About 7 years of front-end development experience specializing in JavaScript, TypeScript, React, and Next.js. Development of complex single-page applications with reusable components, state management using Redux or Context API, and server-side rendering for improved SEO and performance.
Back-End Development & API Architecture
Strong expertise in back-end development using PHP, Laravel, CodeIgniter, Node.js, and Express. Design of RESTful and GraphQL API architectures ensuring flexibility, performance, and ease of consumption for front-end and mobile applications, with authentication via OAuth 2.0 and JWT tokens.
Cloud Services (AWS, Firebase)
Orchestration of cloud environments using AWS services such as EC2, S3, Lambda, and RDS. Implementation of Firebase features including Firestore, Authentication, Cloud Functions, and Hosting to build real-time applications, as well as AWS IAM policies and Firebase security rules for access control.
Database Management (MySQL, PostgreSQL, MongoDB)
Deep understanding of database management systems including MySQL, PostgreSQL, SQLite, MongoDB, CosmosDB, and Firebase. Optimization of database schemas and queries to support CRM operations efficiently, improving data retrieval time by 34%.
Performance Optimization & Webpack
Bundling of web assets using Webpack resulting in a 24% decrease in page load time. Contribution to performance optimizations that reduced API response times by approximately 20% through query tuning and caching strategies.
TypeScript & Code Quality
Bringing type safety and enhanced tooling to JavaScript projects, reducing bugs and improving developer productivity through static type checking and IntelliSense. Architecture of scalable and maintainable codebases employing best practices such as modularization and design patterns.
Developer Tools (Git, Docker, Postman, Azure)
Proficiency with developer tools including Git, VS Code, GitHub, AWS Lambda, AWS S3, Google Firebase, Microsoft Azure, Postman, and Docker for version control, deployment, API testing, and containerization.
Experience
Professional experience5 - 10 years
Freelancer since2024
Languages
ChineseGoodEnglishFluent
Project history
Leveraged MongoDB, Express, React, and Node to architect and deploy cutting-edge web applications. Pioneered adoption of MERN stack technologies. Designed, coded, and modified 20+ enterprise web applications. Bundled web assets using Webpack resulting in a 24% decrease in page load time. Orchestrated cloud environments using AWS services (EC2, S3, Lambda, RDS). Utilized Firebase features including Firestore, Authentication, Cloud Functions, and Hosting. Implemented AWS IAM and Firebase security rules for access control.
Specialized in crafting efficient and scalable back-end solutions for a wide range of industries. Migrated PHP back-end into Node.js project. Designed RESTful and GraphQL API architectures. Developed powerful APIs using Laravel, CodeIgniter, and Express. Designed API documentation using Swagger and Postman. Optimized database schemas and queries improving data retrieval time by 34%. Implemented authentication and authorization mechanisms using OAuth 2.0 and JWT tokens.
Architected scalable and maintainable codebases using JavaScript and TypeScript. Developed complex single-page applications with React using Redux and Context API for state management. Built server-side rendering React applications with Next.js for improved SEO. Created 30+ visually appealing sites with user-friendly design. Led development team in delivering robust web applications, guiding architectural decisions and mentoring team members.