Chaincode Developer
PURVIEW
- San Francisco, California, United States
- San Francisco, California, United States
À propos
Duratioon: Contract
Key Responsibilities
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 MockStub 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
Required Qualifications
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 RocksDB key-value and CouchDB rich query interactions
Familiarity with gRPC/Protobuf for SDK integration
Event-driven architecture experience (Kafka, RabbitMQ)
Strong testing discipline: unit, integration, and performance benchmarks
BS in Computer Science or equivalent
Technical Skills Required Category Skills
Blockchain
Fabric Chaincode, Stellar Soroban, Private Data Collections
Testing
MockStub, Fabric Integration Tests, Caliper Benchmarks
Preferred Qualifications
WASM/WebAssembly smart contract runtime experience
Financial payment protocol knowledge
Formal verification or static analysis for contracts
Hyperledger open-source contributions
ISO 20022 message format understanding
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Compétences linguistiques
- English
Avis aux utilisateurs
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