Java Technical Lead

Company: Blockchain Developer Asia
Address: No 9 Lane 4 Duy Tan Street, Dich Vong Hau Ward, Cau Giay District, Hanoi
Project: https://defiforyou.uk/

Why work with us:

  • A unique Defi project all over the world
  • Work with an elite start-up team who raised successfully $500,000 from angel investors and got funded $6,000,000 by community
  • Founder of project has great experience as well as international influence, at the same time is Co-founder of Travala, a successful Blockchain-applied business in travelling
  • Opportunities to work with international and Vietnam experts in Blockchain & Security



  • Lead the team of developers/architects, deliver highly reliable technology products
  • Design and build future state architecture to support new use cases
  • Ensure scalable and reusable architecture as well as code quality
  • Enhance and improve existing blockchain solutions.



Mandatory skills:

  • 5+ years of progressive software development/architecture experience is desired
  • 5+ years of Java / J2EE architecture experience
  • Years of experience with Java Springboot, and Microservice
  • Proven understanding of architecture best practices
  • Knowledge and experience with full SDLC lifecycle
  • Experience with Agile development methodologies (jira)
  • Experience with agile and test-driven development
  • Fast learner excited to develop new skills
  • Excellent communicator who works well in extremely fast-paced team environments

Big plus:

  • Years of hands-on blockchain experience
  • Hands-on experience with any Blockchain platforms (Hyperledger, Ethereum, R3 Corda) (Ethereum is preferred)
  • Hands on experience in basic cryptography such as digital signatures, encryption based on asymmetric or symmetric keys, key agreement, etc
  • Experience in developing apps that communicate with the Ethereum blockchain
  • Experience in developing Ethereum smart contracts written in different programming language such as Python, Javascript and Solidity
  • Good understanding of various different consensus algorithms used in Bitcoin Blockchain, Ethereum, Byzantine fault-tolerant algorithms including Hyperledger Fabric PBFT algorithm etc
  • Knowledge of cryptography, including asymmetric (pub/priv key), symmetric, hash functions, encryption/signatures
  • Able to create security architecture for managing the security of Blockchain and related applications
  • Experience creating best practices/guidelines for blockchain teams
  • Skilled in performance metrics for measuring Blockchain performance.
  • Good English verbal and written communications skills, able to resolve business issues


Benefit and perk:

  • Attractive salary and package. Offer min $1,500
  • Working time: 8:00-17:30 (off 1.5h from 12h to 13h30 for lunch) from Monday to Friday
  • Flat and hierarchy structure
  • Self-management is appreciated
  • Friendly, innovative, and supportive environment
  • Psychological safety; Your ideas are always welcomed
  • Interesting projects
  • 13th month salary, annual heath-check, insurance under Vietnamese Labor Law, monthly teambuilding.

If you are always willing to learn, if you like challenges, if you want to get an attractive package and be a part of exciting projects, don’t hesitate to send your CV to: linhdd@blockchaindeveloper.asia

Thank you!