Blockchain Solutions Architect

BBVA (Madrid / Spain) • Jul 2023 - Present

As a Blockchain Solutions Architect at BBVA I am responsible for designing and implementing blockchain-based solutions to improve banking services.

Designing Blockchain Solutions:

Architect end-to-end solutions for customers using blockchain technology.

Ensure that the blockchain solutions meet business requirements and align with industry best practices.

Strategic Planning:

Develop an overall blockchain ecosystem engagement strategy to integrate blockchain solutions within the bank’s existing systems.

Collaborate with cross-functional teams to identify and prioritize blockchain use cases.

Performance and Risk Management:

Create performance metrics to measure the effectiveness of blockchain implementations.

Conduct risk/failure analysis and prepare risk mitigation strategies.

Best Practices and Training:

Establish best practices or guidelines for blockchain teams.

Train and mentor technical staff concerning blockchain concepts, tools, and frameworks.

Blockchain Developer

NEXPLORE (Essen / Germany) • Nov 2020 - Jul 2023

As a Blockchain developer at NEXPLORE (HOCHTIEF entity) I develop a Blockchain platform to unify construction processes, allow the traceability of materials and ensure the immutability of construction contracts. My role in this company is the design, configuration and development of a Hyperledger Fabric Blockchain network, development of REST APIs to communicate with the Blockchain and perform network operations, maintenance and platform features development.

• Configuration of the Hyperledger Fabric core (latest version).
• Multi-organization and multi-peers Blockchain configuration.
• Dynamic membership management, identities, policies definition and Certificate Authority integration.
• Attribute-based access control (ABAC) to the Blockchain.
• Governance Smart Contract / Chaincode that performs administrative operations.
• REST API in Go that performs Blockchain operations ( Hyperledger Fabric CLI).
• REST API in TypeScript that communicates with the Blockchain.
• Keycloak authentication, TLS communication security.
• Kubernetes configuration for the orchestration ( Docker), management and deployment strategy of the Blockchain.
• Helm Charts to manage Kubernetes deployments and Helm File configuration for multiple-charts deployments.
• Smart Contracts / Chaincode development in TypeScript and Go.
• Production-ready distributed Blockchain environment hosted on Microsoft Azure.
• PostgreSQL persistent storage (off-chain data).
• Block Explorer , Prometheus and DataDog to audit the Blockchain and monitor the cluster.



CI/CD

• GitHub Actions and BitBucket Pipelines.
• Integration Tests (Blockchain operations)
• Unit Tests (Mocha, Chai)
• Performance Tests (Gatling, Apache Maven)



WORKFLOW

• GitHub and BitBucket collaborative code.
• Agile / SCRUM workflow using Jira and Confluence.

Full-Stack Blockchain Developer

Cibernos (Madrid / Spain) • Oct 2019 - Nov 2020

As a Full-Stack Blockchain developer at Cibernos, I worked on different layer applications that connect to the Blockchain and on all the Blockchain core configuration behind it. My role in this company was the design, configuration, development and maintenance of a Hyperledger Fabric Blockchain network. The development of various REST APIs in NodeJS to communicate with the Blockchain, and the integration with different microservices and distributed cloud solutions.

• Blockchain network design.
• Hyperledger Fabric configuration and development.
• Blockchain scalability and network maintenance.
• Hyperledger Fabric upgrade from version 1.4 to 2.0.
• Smart Contract development in NodeJS and Go.
• REST API design and development in NodeJS.
• Asynchronous integration and communications API-Blockchain.
• REST APIs hosted on Amazon Web Services.
• Distributed network scalability.
• Blockchain integration with Amazon Web Services Simple Storage Service (S3) to store the off-chain data.
• Blockchain integration with a decentralized storage system ( IPFS) to store off-chain data and confidential files. (https://ipfs.io/)
• Modularization of the product in Docker containers.
• Dependencies and multi-container definitions using YAML files and Docker-Compose.
• Securization of the API with JSON Web Tokens.
• Angular web application and integration with REST APIs.
• Version control and collaborative code with GitHub.
• Agile workflow with Trello.

Business Intelligence Consultant

Banco Mare Nostrum (Granada / Spain) • Oct 2017 - May 2018

During my experience as a Business Intelligence Consultant at Banco Mare Nostrum, I worked on the technological integration with Bankia, performing the migration of the customer database, the update and maintenance of the databases as well as the deployment of periodical procedures to keep the data updated. I also worked on the data treatment to be displayed on a web application.

• Technological integration of BMN with Bankia for the bank fusion.
• Development of procedures in PL/SQL language.
• Database processing with Teradata.
• Data analysis.
• Client reports creation with MicroStrategy.
• Data treatment via a web application.

Sales Promoter and Commercial Agent

Jazztel (Granada / Spain) • Sep 2017 - Sep 2019

Product sales, customer service and commercial marketing.

• Communicative skills.
• Dynamism and pro-activity.
• Orientation to results.
• Teamwork and leadership.
• Problem solving.
• Communication with clients from all over the world.
• Use of several languages.