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Billyflin/README.md

Billy Martínez

SAP BTP Technical Consultant at BeCloud Consulting and full-stack engineer working between functional requirements, architecture, implementation, and quality.

I turn ambiguous requirements into solution architecture and working software, then stay involved through integration, deployment, and troubleshooting. My current scope includes SAP BTP, Fiori, CAP/CDS, Work Zone, HANA, Joule, Kotlin/Spring, TypeScript/React, PostgreSQL, Google Cloud, AWS, and Docker.

Selected engineering

  • SAP solution delivery - Requirement refinement, architecture, Fiori/UI5 UX, full-stack delivery, automated testing, and QA coordination across SAP BTP. Client details remain confidential.
  • CliniPets Backend - Public technical snapshot of a Kotlin/Spring veterinary platform with scheduling, auditable clinical records, inventory, storage, notifications, and 41 test files.
  • UFRO Sustentable - Kotlin/Firebase Android team project with QR and location flows, 83 JVM tests, and documented repository coverage.
  • SAP CAP + Fiori - End-to-end SAP BTP reference with CDS, OData V4, Fiori Elements, HANA/XSUAA deployment design, resilient external integration, and 12 service tests including concurrent stock protection.
  • Grounded Knowledge Assistant - Independent Next.js/TypeScript RAG reference with evidence gating, safe refusals, validated citations, 12 automated tests, deterministic fixture evaluations, an optional OpenAI provider, and green CI.
  • Contract Testing - Dockerized microservices demonstrating consumer-driven contracts with Pact.
  • Software Supply Chain - Reproducible PyPA SBOM and vulnerability analysis pipeline using CycloneDX and OSV.
  • Event-driven Data Engineering - GitHub source miner using Python, Redis Streams, Docker, and a live dashboard.

What I am good at

  • Requirement refinement with a functional consultant
  • Automated testing and QA/design coordination
  • Solution architecture and technical tradeoffs
  • SAP BTP full-stack delivery
  • Secure multi-tenant backend systems
  • Cost-aware cloud decisions and production troubleshooting

Based in Temuco, Chile. Remote contractor with full US-hours overlap. Spanish native, English B2.

Portfolio · LinkedIn · Email

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  1. Portfolio Portfolio Public

    Bilingual portfolio for SAP technical consulting, solutions engineering, and full-stack roles.

    TypeScript 1

  2. sap-cap-fiori-btp sap-cap-fiori-btp Public

    SAP CAP and Fiori Elements reference application for SAP BTP.

    CAP CDS

  3. clinipets-platform-backend clinipets-platform-backend Public

    Kotlin/Spring backend for a multi-tenant veterinary platform.

    Kotlin

  4. grounded-knowledge-assistant grounded-knowledge-assistant Public

    Grounded RAG reference with citations, deterministic evals, safe refusals and an optional OpenAI provider.

    TypeScript

  5. ufro-sustentable ufro-sustentable Public

    Kotlin/Firebase recycling app with QR and location flows, 83 JVM tests, and documented quality evidence.

    HTML

  6. pact-contract-testing pact-contract-testing Public

    Dockerized microservices demonstrating consumer-driven contract testing with Pact.

    JavaScript