About Sergio
Who I am
I am a Freelance GenAI Consultant with 8+ years in ML, including 2.5+ years leading GenAI at a major European payment processor.
I build production-ready GenAI systems for startups and scale-ups, with the evaluation rigor and operational discipline needed to ship GenAI reliably at scale.
Most companies can build a proof of concept. Few get it to production without wasting months or shipping systems that break. I bring production discipline from enterprise experience to help startups ship fast while building robust systems.
What I bring
- Production-grade engineering: Architectures proven at enterprise scale, with evaluation, monitoring, and observability built in.
- Battle-tested experience: RAG pipelines, agent workflows, and LLM applications in high-stakes industries.
- End-to-end capability: From design through deployment, delivering complete working systems.
- Evaluation-first: Rigorous methodology, test datasets, metrics, and continuous monitoring.
Typical projects
- GenAI Product Development: RAG systems, AI agents, semantic search, intelligent workflows, content generation.
- Fractional Engineering Leadership: Technical roadmap, architecture, team enablement, quality standards.
- Production infrastructure: Deployment, evaluation frameworks, monitoring, cost control.
Selected experience
- Owned delivery of production GenAI systems at enterprise scale supporting global operations: ticket routing, summarization, semantic retrieval, chatbots, QA, and AI-assisted KYC/AML workflows.
- Designed and deployed production ML systems with monitoring, retraining, and explainability across fintech, real estate and telecom.
How I engage
- Senior individual contributor or fractional technical lead.
- Mid-term engagements (3+ months).
- Remote-first, EU-based projects.
- Ownership from problem framing through delivery.
I work with startups and scale-ups that understand getting production GenAI right the first time is cheaper than rebuilding later.
Spanish
Native or bilingual
English
Native or bilingual
German
Basic
Remote only
Primarily works remotely
Experience
- AdyenGenerative AI Apps LeadDIGITAL AND ITJune 2023 - Today (3 years)Adyen provides payments, data, and financial products for global clients like Meta, Uber, H&M, and Microsoft.
- Owned delivery of production GenAI systems at large enterprise scale, supporting global operations, including ticket routing, summarization, semantic retrieval, chatbots, QA, and AI-assisted KYC/AML workflows. Applications processed thousands of daily cases and alerts across global channels.
- Collaborated closely with product, engineering, security, and compliance teams to ensure systems were auditable, reliable, and approved for regulated deployment, while defining roadmap and priorities.
- Mentored and scaled a team of 6 Data Scientists, led internal GenAI enablement initiatives, and presented progress and risk assessments to leadership.
- JLLGlobal Senior Data ScientistREAL ESTATEAugust 2020 - June 2023 (2 years and 10 months)Applied data science to real estate, socio-economic, and geospatial data to support strategic decisions at a global scale.
- Designed, deployed, and maintained production-grade ML systems with monitoring, retraining, and explainability.
- Delivered solutions including real estate price prediction, land use classification, time series forecasting, client-facing dashboards, and internal AI training initiatives.
- Communicated model outputs and insights to product teams and senior stakeholders to inform enterprise decisions.
- Instituto de Estudios Bursátiles (IEB)Lecturer, Data ScienceEDUCATION AND E-LEARNINGJuly 2021 - Today (4 years and 11 months)Developed and delivered lectures and hands-on sessions for Introduction to Data Science, Machine Learning, Deep Learning, and AI Ethics.
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Education
- Master in Data ScienceKSchool2018Master in Data Science
- Master of Science in Computer Science (Erasmus)University of Bonn2016Master of Science in Computer Science (Erasmus)