Blockchain Developer

birth certificates, Aadhaar, income, caste, and academic certificates

Key Responsibilities:

• Design and develop a blockchain-based platform for certificate issuance, storage, and verification.
  
• Implement secure storage mechanisms (on-chain/off-chain/IPFS) for documents and their hash references.
  
• Develop APIs for real-time certificate verification and third-party integrations.
  
• Ensure end-to-end encryption, secure access control, and tamper-proof document handling.
  
• Implement identity/authentication protocols (e.g., eKYC, public-private key access).
  
• Collaborate with backend and frontend teams to integrate blockchain with existing systems.
  
• Document technical workflows and maintain audit trails for access and verification.
  

Mandatory Skills:

• 3+ years of hands-on experience in

  blockchain development

  (Ethereum, Hyperledger, Polygon, or similar)
• Strong understanding of

  smart contracts

  ,

  hashing

  ,

  digital signatures

  , and

  encryption

• Experience with

  document storage strategies

  : on-chain, IPFS, or hybrid models
• Proficiency in

  Solidity, Node.js, Python

  , or similar languages
• Deep understanding of

  access control

  ,

  data privacy

  , and

  zero-trust architecture

• Integration experience with public APIs and verification platforms
  
• Ability to explain RAG architecture, embeddings, or vector DBs (if used for search/AI overlay)