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Backend Developer (Nodejs) – Blockchain Project
Da Nang, Vietnam
Full-Time
You will love it
In-Office
Posted 3mo ago
Specialty:
Back-End Engineer
Experience Level:
2-4 years
Management Level:
None people
English Level:
Basic
Skills & Technologies
AWS
Express
Node.js
EVM
Web3.js
GraphSQL
PostgresDB
MongoDB
Next.js
Docker
About the Job
We’re hiring a Backend Developer with Node.js experience to join our blockchain project. You’ll help us build secure, scalable backend services and integrate directly with EVM-based chains.
Responsibilities
- Develop and maintain backend services using Node.js (Express.js, NestJS, etc.)
- Build and optimize GraphQL APIs
- Integrate EVM-compatible blockchain platforms
- Work with both SQL and NoSQL databases (PostgreSQL, MongoDB)
- Ensure system performance, security, and scalability
- Collaborate with frontend and blockchain teams
- Write clean, well-documented code and technical documentation
Minimum Qualifications
- 3+ years of experience with Node.js and one or more frameworks like Express.js, NestJS, Fastify, or Koa.js
- Solid understanding of JWT, OAuth, WebSockets, and API security best practices
- Hands-on experience with MongoDB, PostgreSQL, or MySQL
- Familiarity with blockchain, smart contracts, Web3.js or Ethers.js is a strong plus
- AWS Developer certification and experience working with AWS services
- Strong ability to work independently and as part of a team
Preferred Requirement
- Proficiency in Git, CI/CD, and Docker
Benefits
- Competitive salary based on experience
- Flexible working hours
- Work with cutting-edge Web3 technologies
- Opportunities for professional development and training
Chainslab
An independent R&D firm focus on the digital economy revolution, provide in-depth research, genuine insight and cutting-edge opinions, closing the information gap within Blockchain industry.
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