Arpit Dahal

Systems Administrator | Infrastructure & Security Operations

Arpit Dahal

Systems Administrator with 3+ years of experience in enterprise operations. Specializing in resilient infrastructure, CI/CD DevOps workflows, and security-first engineering.

3+ YearsExperience

Managing enterprise systems and operations.

Cloud NativeMicrosoft Stack

Expert in Entra ID, Intune, and M365 Security.

SecOpsSecurity First

Integrating security into every layer of infrastructure.

DevOpsCI/CD Integration

Automating workflows for reliable deployments.

Selected Projects

01
Mobile Dev

Day Trading Journal (Android App)

Context

Developed and published a comprehensive trading journal application for active traders.

Role & Action

Built the full application lifecycle from concept to Play Store release. Implemented local database storage, performance analytics, and responsive UI.

Outcome

Successfully launched on Google Play Store, providing traders with a tool to track performance and improve discipline.

Android DevelopmentMobile AppGoogle Play StoreJava/Kotlin
02
Operations

Enterprise Service Management Rollout

Context

Mid-sized organization required a structured service delivery platform to replace ad-hoc email requests and improve SLA tracking.

Role & Action

Architected and implemented a Jira Service Management instance. Designed custom workflows for incident/request types, configured automation rules for routing, and established a knowledge base structure.

Outcome

Standardized IT support workflows, enabled measurable SLA tracking, and reduced ticket resolution time by centralized intake and automated triage.

Jira Service ManagementITILProcess AutomationSLA Reporting
03
Infrastructure

In-House IT Infrastructure Transition

Context

Organization moved from full MSP reliance to internal IT ownership to improve responsiveness and security control.

Role & Action

Took ownership of internal infrastructure, network management, and security operations. Audited existing assets, documented network topology, and established internal patch management routines.

Outcome

Successfully brought core IT operations in-house, reducing external vendor costs and significantly improving incident response times for critical business functions.

Vendor ManagementNetwork AdminAsset ManagementOperational Ownership
04
GRC / Security

ISO 27001 Audit Readiness Support

Context

Organization pursued ISO 27001 certification requiring evidence of operational controls and rigorous documentation.

Role & Action

Aligned daily operational practices with security controls. Collected technical evidence for audits, documented access control procedures, and ensured endpoint compliance standards were met.

Outcome

Contributed to successful certification by validating that technical reality matched policy requirements, demonstrating a strong culture of compliance.

ISO 27001ComplianceAudit EvidencePolicy Implementation
05
Web Ops

High-Availability Web Hosting Operations

Context

Production Windows web hosting environment required stable uptime, security hardening, and performance monitoring.

Role & Action

Managed IIS configurations, including application pools, SSL/TLS binding management, and log analysis. Implemented routine maintenance windows and performance monitoring.

Outcome

Maintained high availability for business-critical applications through proactive monitoring and disciplined change management procedures.

Windows ServerIISSSL/TLSLog AnalysisPowerShell
06
Lab / R&D

Enterprise Identity Simulation Lab

Context

Self-directed initiative to master Windows enterprise patterns outside of production constraints.

Role & Action

Built a complete Active Directory forest (Windows Server 2019/2022). Configured DNS, DHCP, GPOs for security baselines, and practiced domain join/trust operations.

Outcome

Deepened practical understanding of Kerberos, Group Policy inheritance, and identity lifecycle management, directly applying concepts to professional troubleshoot scenarios.

Active DirectoryDNS/DHCPGroup PolicyWindows Server
07
Security Ops

Network Defense & Remediation Cycle

Context

Simulation of a corporate network breach to understand the attacker lifecycle and validate defense efficacy.

Role & Action

Conducted controlled pentests (Kali, Nmap, Metasploit) against a lab AD environment. Identified vulnerabilities, then switched roles to Blue Team to implement detection rules and patch gaps.

Outcome

Closed the loop between attack and defense. Developed a threat-actor perspective that informs more effective system hardening and alert prioritization.

Kali LinuxVulnerability ManagementMetasploitHardening
08
Research

CVE-2025-32462 Vulnerability Analysis

Context

Technical deep-dive into a specific local privilege escalation vulnerability to understand exploit mechanics.

Role & Action

Replicated the vulnerability in a controlled environment. Documented the escalation path in sudo and tested mitigation strategies provided by vendors.

Outcome

Produced technical documentation demonstrating the importance of timely patching and principle of least privilege, suitable for peer technical review.

Vulnerability ResearchPrivilege EscalationLinux SecurityPatch Management

Technical Capabilities

A balanced mix of infrastructure stability, cloud modernization, and security operations.

Infrastructure

  • Azure Virtual Desktop & W365
  • Hybrid Identity Management
  • Network Security Groups & ASGs
  • Linux & Windows Administration
  • Server Hardening Benchmarks

DevOps & Cloud

  • Azure DevOps & GitHub Actions
  • Entra ID PIM & Conditional Access
  • Intune Endpoint Manager
  • Terraform State Management
  • Application Gateway & WAF

Security Operations

  • Sentinel SIEM Query Engineering
  • Automated Threat Response
  • Microsoft Defender for Endpoint
  • Identity Protection & Risky Users
  • Email Security Policies

GRC & Compliance

  • Compliance Manager Score Analysis
  • Privileged Identity Governance
  • Data Loss Prevention Policies
  • Sensitivity Label Architecture
  • Third Party App Permissions

Tooling & Development

  • Python & Bash Automation
  • KQL Query Language Expert
  • Logic Apps & Power Automate
  • API Security Testing Tools
  • Vulnerability Management Dashboards

About Me

I am a Systems Administrator with over 3 years of experience in enterprise environments, where I've transitioned from frontline support to managing core infrastructure and security operations. My work is defined by a calm, methodical approach to troubleshooting and a strong ownership mindset—I don't just fix issues; I look for the root cause and document the solution.

Currently, I manage internal IT infrastructure, bridging the gap between traditional reliability (Windows Server, Networking) and modern agility (Azure, M365). I have a growing focus on Blue Team operations, actively training in incident response and vulnerability management to better protect the systems I administer.

Now / Next

Focusing on deeply integrating security into daily operations. Currently studying for specialized security certifications and building automated detection labs to simulate real-world SOC scenarios.

RoleSystem Administrator
LocationAustralia
FocusInfrastructure & SecOps

Ready to Connect?

I am currently open to conversations about Systems Administration, Infrastructure, and Security Operations roles.