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Santiago GonzalezSG

Santiago Gonzalez

IT Architect expert in Java/Python

€250/day
Madrid, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Santiago

I help organizations turn technological complexity into competitive advantage. With 20 years of experience architecting solutions that transcend the technical and generate real business impact.

Specializing in Generative AI and digital transformation, I have led projects ranging from critical infrastructure modernization to the implementation of GenAI solutions that optimize retail processes and create new business opportunities.

My superpower: translating technical jargon into business value and building solutions that deliver exceptional results.
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Axpo (CH)
    Digital Transformation Project Manager
    ENERGY AND UTILITIES
    March 2018 - March 2019 (1 year)
    Madrid, Spain
    Infrastructure Modernization:Led the critical initiative to modernize the technological infrastructure, designing the big data architecture and developing the technical RFP for strategic vendor selection.

    Zero Downtime Migration:Integrated industrial SCADA platforms and migrated critical infrastructure systems, ensuring business continuity with zero downtime.

    Cross-functional Leadership:Managed multidisciplinary external teams and coordinated technical stakeholders to ensure the quality of results and alignment with business objectives.

    Strategic Vendor Management:Technical-economic evaluation of proposals and negotiation of service level agreements, optimizing ROI and service quality.

    SaaS Transformation:Transformation to SaaS model through strategic outsourcing of custom development, eliminating unnecessary operational costs.

    Infrastructure Automation:Implementation of infrastructure automation using Ansible provisioning and redesign of high-concurrency architectures for optimal scalability.

    Project Management:Application of methodologies that ensure compliance with deadlines, budget, and technical quality standards.

    Result:Complete modernization of the technological infrastructure with significant improvements in performance, scalability, and reduction of operational costs.
    Change Management it-project-management Cloud Architect Java Python
  • Axpo (CH)
    Innovation & IT Architect
    ENERGY AND UTILITIES
    March 2019 - Today (7 years and 3 months)
    Madrid, Spain
    Digital Transformation with Generative AI:Leading strategic GenAI initiatives by implementing PoCs with LLM models that optimize operational efficiency, reduce processing times, and generate new business capabilities.

    Enterprise Architecture:Designing and managing the complete lifecycle of scalable technological architectures (microservices, EDA, multi-level), applying frameworks that ensure strategic alignment with business objectives.

    Intelligent Automation:Developing proprietary methodologies in prompt engineering and conversational agents, creating private GPT assistants that transform business workflows and enhance the end-user experience.

    Advanced AI Technology Stack:Evaluating, selecting, and implementing cutting-edge LLM solutions (Haystack, Langchain, RAG, MCP servers, vector databases), ensuring robustness, scalability, and ROI in each project.

    Cloud Infrastructure:Orchestrating multi-account AWS solutions with ISO27001 compliance policies, cost optimization, and Rancher management, ensuring resilient and cost-effective infrastructures.

    Governance and MLOps:Driving MLOps frameworks (MLFlow) and containerization strategies, guiding development teams and establishing best practices that scale organizationally.

    Technology Evangelism:Leading training initiatives on generative AI, educating on capabilities, limitations, and opportunities, accelerating organizational adoption of emerging technologies.
    Cloud Architect GenAI Agentic AI Java Python
  • Axpo (CH)
    Platform xREM Product Manager
    ENERGY AND UTILITIES
    April 2015 - March 2018 (2 years and 11 months)
    Madrid, Spain
    Architect and technical lead of a comprehensive ecosystem for monitoring, maintenance, and optimization of renewable energy assets:

    -xREM Mobile:Cross-platform native applications (Android/iOS) for real-time energy production monitoring. Managed the complete development with external teams and designed the entire backend architecture.
    -xREM Reports:Business intelligence engine for automated generation of executive reports (daily, weekly, monthly) and operational log control.
    -xREM Data:Data hub with advanced integration from multiple industrial sources (OPC, Historian, SCADA). Developed a complete ingestion and processing system for critical data.
    -Enterprise Technology Stack:Spring Boot 4.x, Hibernate, RabbitMQ, Redis, SQL Server, MySQL with REST API for full interoperability.

    Transformation Phases:

    -Phase I:Stabilized the legacy architecture, ensuring deployment in production without interruptions.
    -Phase II:Redefinition towards Lambda architecture and design of the big data migration roadmap, ensuring scalability, performance, and data quality for a sustainable energy future.

    Result:Complete renewable asset management platform enabling real-time operational intelligence and strategic decision-making.
    Cloud Architect Java Spring boot it-architecture Team Management

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Certifications

  • ITIL® 4 Strategist: Direct, Plan and Improve Certificate
    PeopleCert
    2021
    ITIL

Skill set (34)

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