Chaincode Developer

Job Title:
Senior Smart Contract Developer (Chaincode)

Duratioon:
Contract

• Design and implement core payment chaincode in Go for authorization, settlement, and reconciliation
• Build the automated Policy Engine enforcing approvals based on configurable rules, roles, and risk scores
• Implement Private Data Collections for confidential settlement data across organizational boundaries
• Develop endorsement policy logic balancing security (AND policies) with latency constraints
• Optimize execution paths to minimize read/write set generation and maximize parallel validation
• Implement multi-currency support with atomic pathfinding for cross-currency settlements
• Build comprehensive test suites using Fabric Mock Stub and integration frameworks
• Design zero-downtime chaincode upgrade and versioning strategies
• Implement WASM-based modules for computationally intensive sandboxed operations
• Develop event emission patterns for Kafka integration and real-time webhook delivery
• Conduct code reviews and maintain business logic documentation
• Embed KYC/AML screening logic directly into transaction chaincode

• 6+ years development, 3+ years smart contracts or chaincode
• Strong Go proficiency with concurrent programming and performance optimization
• Hands-on Hyperledger Fabric chaincode development and deployment lifecycle
• Understanding of Execute-Order-Validate transaction flow implications
• Experience with Private Data Collections and cross-channel invocations
• Knowledge of Rocks
  
  DB key-value and Couch
  
  DB rich query interactions
• Familiarity with gRPC/Protobuf for SDK integration
• Event-driven architecture experience (Kafka, Rabbit
  
  MQ)
• Strong testing discipline: unit, integration, and performance benchmarks
• BS in Computer Science or equivalent

Category Skills

• Fabric Chaincode, Stellar Soroban, Private Data Collections

• Mock Stub, Fabric Integration Tests, Caliper Benchmarks

• WASM/Web Assembly smart contract runtime experience
• Financial payment protocol knowledge
• Formal verification or static analysis for contracts
• Hyperledger open-source contributions
• ISO 20022 message format understanding