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$
USD
I will develop enterprise blockchain and backend applications
Lissette A
About this gig
I will create, fix and optimize REST APIs using Node.ja,Express and TypeScript. Services include API development, bug fixing, database integration, JWT authentication, backend improvements and clean code implementation
Get to know Lissette A
Lissette A
Backend Developer Enterprise Blockchain
- FromMexico
- Member sinceSep 2026
- Avg. response time3 days
Languages
English, Spanish
Backend Engineer specializing in enterprise blockchain and distributed systems. I build secure Hyperledger Fabric networks, Solidity smart contracts, TypeScript chaincode, and scalable REST APIs. Experienced with AWS, Kubernetes, Docker, SQL, identity management, RBAC, and private data collections. My expertise is demonstrated through production-grade portfolio projects, including AutoVault, a Decentralized Oracle System, and a Car Rental Token Platform, showcasing practical problem-solving, infrastructure debugging, and enterprise software development.
FAQ
What information do you need before starting the project?
Please provide your project requirements, API documentation (if available), current code repository (if applicable), database details and any specific features you need
Do you need access to my existing code?
If you need me to fix or improve an existing API, please share the relevant files or repository access. For new projects a detailed description of your requirements is enough to start
Which technologies do you work with?
I work with Node.js, Express,js, TypeScript, REST APIs, SQL database, authentication systems (JWT) and backend integrations
Can you Integrate a database into my API?
Yes, I can integrate and configure databases such as PostgreSQL, MySQL and MongoDB depending on your project requirements
Can you fix bugs or improve an existing API?
Yes, I can analyze backend issues, fix errors, improve code quality and optimize API performance
