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Blockchain Developer(with MDM Hands-on) : Remote

Remote · Portugal Full-time

Key Responsibilities

  • Product Development
  • Architect, design, and develop core modules of the Blockchain Data Management platform (data governance, lineage tracking, and MDM).
  • Implement smart contracts and consensus mechanisms to ensure transparency, immutability, and trust across the platform.
  • Build APIs and integration services to connect blockchain layers with existing fintech systems.
  • Blockchain Engineering
  • Design and optimize decentralized ledger structures to store governance metadata, lineage logs, and master data references.
  • Ensure scalability, security, and fault tolerance of the blockchain network.
  • Evaluate blockchain frameworks (e.g., Hyperledger Fabric, Ethereum, Quorum, Polygon) and recommend the best fit for fintech data use cases.

Data Management

  • Develop mechanisms to capture and track data lineage across multiple data sources.
  • Build frameworks for Master Data Management using blockchain identity and tokenization principles.
  • Implement rule-based data governance policies aligned with fintech regulations.

Required Skills & Experience Core Technical Skills

  • 5 8 years of experience in software engineering with at least 2 3 years in Blockchain development.
  • Proficiency in blockchain frameworks: Hyperledger Fabric, Ethereum (Solidity), Quorum, or similar.
  • Strong programming expertise in Python, Go, Java, or Node.js.
  • Hands-on experience with smart contract development and DApps.
  • Knowledge of distributed systems, consensus algorithms, and cryptographic principles.
  • Data Engineering & Governance
  • Familiarity with data lineage, data cataloging, and metadata management tools.
  • Experience with Master Data Management (MDM) solutions and principles.
  • Understanding of data governance frameworks and fintech compliance (e.g., GDPR, CCPA, PCI DSS).

Architecture & Tools

  • Experience with microservices, containerization (Docker, Kubernetes), and cloud platforms (AWS, Azure, Google Cloud Platform).
  • Strong knowledge of RESTful APIs, GraphQL, and event-driven architectures (Kafka, RabbitMQ).
  • Proficiency with CI/CD pipelines, Git, and DevOps practices.

Nice-to-Have

  • Experience with fintech platforms and regulatory data compliance.
  • Exposure to Zero-Knowledge Proofs, Decentralized Identity (DID), or Tokenization for sensitive data.
  • Knowledge of AI/ML integration for anomaly detection in data lineage or governance.

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