Hosein Nahidian
Delivery Principal, Identity Governance And Access Management at Slalom
Bristow, Virginia, United States
Summary
👤
Senior🎓
Top SchoolHosein Nahidian is a Delivery Principal specializing in Identity Governance and Access Management with over 25 years of technical leadership across higher education, federal, and enterprise environments. He has led large-scale IAM migrations and deployments—including Okta MFA rollouts and synchronization across eDirectory, Active Directory, Azure, and cloud gov environments—to bring organizations into compliance with NIST and FISMA requirements. Known for turning complex directory landscapes into automated, policy-driven identity platforms, he has driven lifecycle automation, attribute-based provisioning, and directory consolidation at American University and the U.S. Census Bureau. His hands-on background spans systems and network engineering, project leadership, and cloud transitions, and he mentors teams to deliver auditable, risk-aware solutions. Outside traditional IAM work, he contributed backend code to the EPA’s widely used CMAQ air-quality model, improving dust emission parameterizations—an example of applied engineering breadth. Based in Bristow, VA, he combines meticulous process design with pragmatic technical execution to modernize identity ecosystems.
10 years of coding experience
25 years of employment as a software developer
Bachelor's Degree Business Administration and Management Specialization in Information Systems and Technology, Bachelor's Degree Business Administration and Management Specialization in Information Systems and Technology at American UniversityAssociate's Degree Information Technology, Associate's Degree Information Technology at Northern Virginia Community CollegeGlobal Information Assurance Certification GCWN, Global Information Assurance Certification GCWN at SANS.ORG
Github Skills (6)
fortran10
scientific-computing10
modeling10
model-driven-development9
model-driven9
model-building9
Programming languages (1)
Github contributions (3)
USEPA/CMAQ
Feb 2016 - Jun 2017
Code for U.S. EPA’s Community Multiscale Air Quality Model (CMAQ) which helps in conducting air quality model simulations
Role in this project:
Back-end Developer
Back-end DeveloperContributions:51 commits, 2 PRs in 1 year 4 months
Contributions summary:Hosein primarily focused on modifying the windblown dust module within the CMAQ model. These changes involved alterations to the DUST_EMIS.F file, including updates to parameterizations for threshold friction velocity, vegetation fraction, and surface roughness. The contributions also involved integrating new calculations based on published research, enhancing the model's accuracy and efficiency for dust emission simulations. Furthermore, the user integrated merged changes from the master branch.
atmosphereepamodeling-toolbase-codeclimate-science
hforout/CMAQ
Mar 2017 - Jun 2017
Contributions:18 PRs, 31 pushes, 1 branch in 3 months
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