Nathaniel Lewis
Professional Summary
IAM Manager and ERP Systems professional with a track record of securing enterprise environments, streamlining access operations, and leading high-performance teams at scale. Experienced managing identity lifecycle for 3,500+ users across multiple enterprise platforms. I use PowerShell automation, AI-assisted workforce analytics, and structured work and time studies to identify team strengths, surface coaching opportunities, and drive measurable productivity gains. I operate at the intersection of technical execution and people leadership — and I deliver in both lanes.
Experience
Manager – Identity & Access Management
Current Role
Enterprise Manufacturing & Services Organization · 3,500+ Users · Multi-Platform Environment
⚡ Led automation initiative that reduced access provisioning time by 30%
- Lead IAM operations across Oracle Fusion, Dynamics 365, Delinea PAM, SharePoint, and One Identity — governing identity lifecycle for 3,500+ users.
- Author and deploy PowerShell scripts to locate, organize, optimize, and clean network folder structures; create new directories on network resources as operational demands evolve.
- Apply AI tools (Claude, Gemini, ChatGPT, Copilot) to analyze team activity data, extract workflow trends, and map completed tasks and BAU process patterns — converting outputs into targeted coaching points for individual team members.
- Design and execute structured work and time studies; analyze findings to identify team and individual strengths, surface productivity gaps, and build data-informed development plans.
- Mentor and lead a team of six IAM professionals, using structured data and direct coaching to build skills, increase productivity, and sustain team morale.
- Conduct ad hoc, monthly, and quarterly access reviews, compliance audits, and remediation cycles.
- Develop and maintain workflows, SOPs, and cross-functional collaboration processes to ensure governance and audit readiness.
- Provide after-hours support for infrastructure and access-related emergencies.
Dynamics 365 Systems Administrator
Prior Role
Same Organization · Systems Administration · Enterprise Scale
- Managed security groups, licensing, and access for 3,500+ users across production and sandbox environments.
- Performed environment creation, backups, restores, and troubleshooting in collaboration with Microsoft support teams.
- Partnered with internal business units to resolve operational and access issues efficiently.
ERP Consultant
Contract
Retail / E-Commerce Client · SAP Business One on HANA Implementation
- Developed UAT documentation and system procedures for a SAP B1/HANA implementation.
- Created SQL queries, system alerts, and functional enhancements supporting accounting and operations teams.
- Led functional testing and data validation through system upgrade cycles.
Senior ERP Administrator
Prior Role
National Retail Organization · SAP Platform Administration
- Conducted data quality inspections, system audits, and remediation across enterprise SAP environments.
- Managed user accounts, master data, and system alerts at scale.
- Developed training materials, documentation, and SQL-driven reporting for operations and management teams.
Military Service
Staff Sergeant, U.S. Marine Corps
Honorably Served · Leadership, discipline, and mission-critical execution under pressure