Carlos Crisóstomo

Fractional CIO and Cloud & Security Architect with 20+ years of experience designing, securing, and operating production-grade platforms for startups, scale-ups, and technology-driven organizations.

I help teams move from fragile or ad-hoc systems to reliable, scalable, and auditable infrastructures, aligning technical decisions with business goals, risk posture, and long-term sustainability.

My expertise spans cloud and hybrid architectures (AWS, GCP, on-prem), Kubernetes platforms, DevSecOps and SRE operating models, and security-by-design. I have led and governed platforms in regulated and high-risk environments, including healthcare, public sector, fintech, and data-driven products.

Over the past years, I have also worked extensively on applied AI infrastructure, including LLM-based systems, Retrieval-Augmented Generation (RAG), and local-first or edge deployments, ensuring traceability, isolation, and operational reliability.

I combine deep hands-on engineering background (Linux, cloud, embedded systems) with executive-level technical leadership, enabling me to operate effectively both as an architect and as a strategic advisor.

Typical engagements include:

I work mainly in remote-first setups across Europe and APAC, collaborating closely with founders, CTOs, and engineering teams to deliver pragmatic, production-ready outcomes.