David S.

IT Systems & Identity Security Engineer with hands-on experience designing and operating IAM workflows (SSO, SAML, OIDC) across hybrid environments. Focused on automation, system integration and access governance, with proven impact on operational efficiency, risk reduction and system reliability.

Background in security-driven environments, combining technical execution with structured decision-making.

IT Systems & Data Integration Manager at Leysin American School (2023-09 – 2026-06)

Progression: IT Associate → IT Specialist → IT Systems & Data Integration Manager. Designed and operated IAM workflows across hybrid environments supporting 700+ managed Apple devices and core institutional systems.

• Designed and operated IAM workflows (SSO, SAML/OIDC) across hybrid environments supporting 700+ managed Apple devices and core institutional systems.
• Implemented and managed identity lifecycle using Jamf Connect and Google Workspace, enabling secure authentication and SSO integration.
• Contributed to migration from Jamf on-premise to Jamf Cloud, improving scalability and maintainability.
• Managed SSL/TLS certificate lifecycle and contributed to migration of certification authority from Entrust to Sectigo, improving trust consistency and certificate management.
• Created a controlled sandbox environment on OpenStack for testing database changes (students and financial systems), reducing production risk and enabling safe validation of critical database changes.
• Integrated and operated enterprise platforms including Jamf Pro, OpenStack, Cloudflare, SolarWinds and PaperCut across hybrid infrastructure.
• Developed automation workflows using Python, APIs and AI-assisted tooling, improving operational efficiency and reducing manual workload across recurring processes.
• Acted as an escalation point for incident response and complex troubleshooting.
• Supported GDPR-aligned access governance and data protection decisions.
• Technology Coordinator for SAT, PSAT and IB digital exams, ensuring secure and compliant environments.

Systems & Security Consultant at NDSN (2018-01 – 2025-12)

Led systems, identity and security initiatives across distributed client environments. Designed and implemented secure access, backup and disaster recovery solutions.

• Led systems, identity and security initiatives across distributed client environments.
• Designed and implemented secure access, backup and disaster recovery solutions.
• Delivered automation workflows improving system reliability and operational efficiency.
• Conducted OSINT-based investigations and digital evidence analysis, supporting structured investigative workflows in controlled environments.
• Provided technical leadership, documentation and operational guidance.
• Operated under NDA across multiple projects.

Technical Solutions Consultant (Cloud & Security) at Stock Distribuidora (2020-01 – 2022-01)

Implemented Acronis Cyber Cloud backup and recovery solutions. Supported incident response and disaster recovery scenarios.

• Implemented Acronis Cyber Cloud backup and recovery solutions.
• Supported incident response and disaster recovery scenarios.
• Led SaaS onboarding and technical deployment processes.
• Delivered technical training and pre-sales support, in Portuguese, English and Spanish.

Technical Operations Analyst at AT&M Alta Tecnologia e Métodos (2017-09 – 2018-10)

Supported enterprise systems within insurance environments (Tokio Marine, Chubb), focusing on cargo and transport insurance platforms.

• Supported enterprise systems within insurance environments (Tokio Marine, Chubb), focusing on cargo and transport insurance platforms.
• Contributed to EDI integrations and data exchange workflows related to cargo insurance and policy processing.
• Operated within SLA-driven environments, ensuring system availability and operational continuity.

Bachelor in Business Administration – Universidade Estácio (2005-02 – 2008-12)