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Hi, I’m Lei Chunan, a Python Full Stack Developer with hands-on experience in building PC-based and web applications, integrating backend services, managing databases, and deploying microservices. I have a strong interest and growing expertise in blockchain technologies, including Bitcoin, Ethereum, Cardano, Solana, Aptos, and Sui, focusing on decentralized networks, proof-of-work, and proof-of-stake protocols. I’m passionate about open-source contributions, emerging tech trends, and leveraging personal projects to sharpen problem-solving, analytical, and architectural thinking.…Hi, I’m Lei Chunan, a Python Full Stack Developer with hands-on experience in building PC-based and web applications, integrating backend services, managing databases, and deploying microservices. I have a strong interest and growing expertise in blockchain technologies, including Bitcoin, Ethereum, Cardano, Solana, Aptos, and Sui, focusing on decentralized networks, proof-of-work, and proof-of-stake protocols. I’m passionate about open-source contributions, emerging tech trends, and leveraging personal projects to sharpen problem-solving, analytical, and architectural thinking.

Lei Chunan

Full Stack Developer, Web Developer, Back-End Developer, +2

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Hi, I’m Lei Chunan, a Python Full Stack Developer with hands-on experience in building PC-based and web applications, integrating backend services, managing databases, and deploying microservices. I have a strong interest and growing expertise in blockchain technologies, including Bitcoin, Ethereum, Cardano, Solana, Aptos, and Sui, focusing on decentralized networks, proof-of-work, and proof-of-stake protocols. I’m passionate about open-source contributions, emerging tech trends, and leveraging personal projects to sharpen problem-solving, analytical, and architectural thinking.…Hi, I’m Lei Chunan, a Python Full Stack Developer with hands-on experience in building PC-based and web applications, integrating backend services, managing databases, and deploying microservices. I have a strong interest and growing expertise in blockchain technologies, including Bitcoin, Ethereum, Cardano, Solana, Aptos, and Sui, focusing on decentralized networks, proof-of-work, and proof-of-stake protocols. I’m passionate about open-source contributions, emerging tech trends, and leveraging personal projects to sharpen problem-solving, analytical, and architectural thinking.

Available to hire

Hi, I’m Lei Chunan, a Python Full Stack Developer with hands-on experience in building PC-based and web applications, integrating backend services, managing databases, and deploying microservices.

I have a strong interest and growing expertise in blockchain technologies, including Bitcoin, Ethereum, Cardano, Solana, Aptos, and Sui, focusing on decentralized networks, proof-of-work, and proof-of-stake protocols. I’m passionate about open-source contributions, emerging tech trends, and leveraging personal projects to sharpen problem-solving, analytical, and architectural thinking.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Python Full Stack Engineer at Freelance

January 1, 2022 - November 5, 2025

Developed web and desktop applications for clients, integrating Python backend with React.js and Next.js frontends. Built automation tools and web crawlers using Python, Selenium, and BeautifulSoup. Worked on blockchain integration projects, connecting web apps to Bitcoin, Ethereum, Cardano, Solana, Aptos, and Sui networks. Implemented features related to proof-of-work and proof-of-stake validation, wallet interactions, and decentralized transaction monitoring. Maintained deployments using Docker and CI/CD pipelines; ensured microservices reliability and performance monitoring.

Software Engineer at Guangzhou Zhengyi Information Technology Co., Ltd

January 1, 2023 - January 1, 2023

Collaborated with product and engineering teams to implement backend services and functional architectures. Developed microservices using Python and FastAPI, connected to PostgreSQL/MySQL databases. Handled deployment and monitoring of internal services with Docker, Nginx, and Linux. Troubleshot bugs and optimized existing services for stability and performance. Key Contributions: Contributed to internal data processing tools used by multiple departments. Improved service reliability and maintainability through modular microservice design.

Junior Software Engineer at Yinshu Technology Co., Ltd

January 1, 2020 - January 1, 2020

Assisted in the development of a PC-based internal business application using Python and PyQt/Tkinter. Implemented features and integrated SQLite/PostgreSQL databases under guidance of senior developers. Participated in debugging and testing, gaining practical experience in software development lifecycle.