I help businesses manage, secure, and troubleshoot Microsoft 365, Intune, Entra ID, Exchange Online, Outlook, SharePoint, OneDrive, and endpoint environments with a focus on stable operations, secure access, and fast issue resolution.
I currently serve as an IT Administrator supporting India and USA operations, handling user lifecycle management, device compliance, email administration, identity and access control, server support, and security operations.
My recent Upwork work includes Microsoft Intune device management, Microsoft 365 administration, GoDaddy+ Microsoft 365 DNS setup, shared mailbox troubleshooting, Exchange Online, Outlook support, SMTP authentication, SPF, DKIM, DMARC, and Microsoft 365 consultation work.
What I can help you with:
• Microsoft 365 Administration
User management, licensing, admin roles, Exchange Online, Teams, OneDrive, SharePoint, and tenant setup or troubleshooting.
• Exchange Online & Outlook
Mailbox issues, shared mailboxes, Outlook errors, SMTP authentication, mail flow, email access problems, and practical Exchange Online administration.
• Intune & Device Management
Windows device enrollment, compliance policies, app deployment, endpoint security configuration, and device troubleshooting.
• Entra ID & Access Control
MFA, Security Defaults, Conditional Access review, SSO, user lifecycle management, SCIM provisioning, and access troubleshooting.
• Email & DNS Configuration
MX, SPF, DKIM, DMARC, GoDaddy, Cloudflare, cPanel, Google Workspace, Microsoft 365 email setup, and mail flow troubleshooting.
• Endpoint Security
Microsoft Defender setup, security policy configuration, alert review, device protection, and basic Microsoft 365 security hardening.
• SharePoint & OneDrive
Document access, sync issues, permissions, cleanup, library structure, and basic migration planning.
• Windows Server & AD Support
Active Directory, Group Policy, permissions, Windows Server troubleshooting, and user/ device support.
• Network & Firewall Support
FortiGate firewall configuration, VPN setup, DNS checks, and basic network troubleshooting.
Information Security
System Administration
Compliance
Windows 11 Administration
Windows Server
Microsoft Azure Administration
Microsoft Intune
Windows Administration
Security Operation Center
Security Patch Installation
Antivirus & Security Software
Server Administration
Microsoft Hyper-V Server
Veritas NetBackup
Single Sign-On
User Identity Management
Mobile Device Management
Microsoft Exchange Online
Office 365
GoDaddy
Aaditya S.
Sawai Madhopur, India
$9/hr
5.0
16 jobs
#Microsoft365 #Office365 #Intune #EntraID #AzureAD #ExchangeOnline #Helpdesk #ITSupport #MSP #DeviceManagement #ActiveDirectory #AWS #Azure #VMware #WindowsServer #RMM #ConnectWise #NinjaRMM #Kaseya #Atera #ServiceNow #GoogleWorkspace #IPCamera #CCTV #VideoSurveillance #NVR #RTSP #ONVIF #Hikvision #Dahua
Microsoft Certified IT Professional with 7+ years of experience in IT Support, Microsoft 365, Cloud Administration, MSP Operations, and Infrastructure Management.
Key Expertise:
• IT Helpdesk Support (L1 / L2)
• User Onboarding & Offboarding
• Microsoft 365 / Office 365 Administration
• Exchange Online & Email Migration
• Azure AD / Entra ID / Intune Device Management
• Active Directory & Group Policy Administration
• AWS / Azure Cloud Administration
• Windows Server Administration (2012–2022)
• VMware, Hyper-V & Virtualization
• Endpoint & Device Management
• Backup Solutions (Veeam, Acronis, Unitrends)
• Security Management (SonicWall, Sophos, Meraki)
• VPN Configuration & Network Troubleshooting
• Remote Monitoring & Management (RMM)
• ConnectWise, SolarWinds, ManageEngine, NinjaRMM, Kaseya, Atera
• ServiceNow, Jira Service Desk, Zendesk, Freshservice
• Google Workspace Administration & Migration
• Zoom, Slack, Jira & Confluence Support
• IP Camera Installation, Configuration & Troubleshooting
• CCTV, NVR, DVR & Video Surveillance Support
• RTSP Stream & ONVIF Configuration
• Camera Connectivity, Remote Access & Playback Troubleshooting
• VMS Monitoring & Security Camera Management
• Hikvision, Dahua, Axis & UniFi Protect Support
Why Hire Me?
✔ 7+ Years of IT & MSP Experience
✔ Fast Response & Reliable Support
✔ Microsoft 365, Cloud & Infrastructure Expert
✔ Strong Troubleshooting & Problem-Solving Skills
✔ Security-Focused & SLA-Driven Support
✔ Clear Communication & Detailed Documentation
✔ 24/7 Camera Monitoring, CCTV/NVR Management & Home Automation Support
✔ Microsoft 365 Technical Writer | SOPs, Knowledge Base Articles, User Guides & SEO Content
✔ Available for Long-Term and Ongoing Support
I help businesses reduce downtime, improve productivity, secure their IT infrastructure, and maintain reliable surveillance systems.
🔐 Wazuh SIEM specialist and SOC engineer with hands-on experience deploying,
configuring, and managing security monitoring infrastructure for enterprise
environments. I help businesses detect threats, respond to incidents, and maintain
secure, high-availability IT infrastructure across Linux and Windows systems.
Whether you need a Wazuh SIEM deployed from scratch, SIEM alert tuning, endpoint
security hardening, or full SOC operations support. I deliver production-ready
solutions, not just configurations.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🛡 SECURITY & SIEM
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✔ Wazuh SIEM – Full deployment, agent onboarding, custom rules & decoders
✔ Log Management & Analysis – Syslog, Windows Event Logs, CEF/JSON ingestion
✔ Threat Detection & Incident Response – Alert triage, IR documentation, root cause analysis
✔ Endpoint Security – Kaspersky EDR, ESET PROTECT, VirusTotal FIM integration
✔ Firewall & Network Security – pfSense, FortiGate, IPsec VPN, WAN hardening
✔ GeoIP Enrichment & Attack Dashboards – OpenSearch/Kibana visualizations
✔ Active Response Automation – Python scripting, email alerting, SMTP integrations
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🖥 SYSTEM ADMINISTRATION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✔ Windows Server – Active Directory (AD DS), DNS, DHCP, Group Policy, AD CS
✔ Linux Server – Ubuntu, Debian, Red Hat / RHEL — setup, hardening, automation
✔ Virtualization – VMware ESXi, Proxmox VE, Hyper-V, XenServer
✔ Monitoring & NMS – Zabbix, PRTG, Nagios, Wazuh agent health monitoring
✔ Backup & Recovery – Veeam Backup, NFS, disaster recovery planning
✔ Email & Cloud – Zimbra Mail Server, Nextcloud, OwnCloud
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🌐 NETWORKING
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✔ Routing & Switching – VLANs, inter-VLAN routing, static & dynamic routing
✔ VPN – IPsec site-to-site, OpenVPN, WireGuard, Cloudflare Zero Trust
✔ Firewalls – pfSense HA/CARP cluster, FortiGate policy management
✔ Remote Access – RustDesk, MeshCentral, self-hosted RDP solutions
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
📜 CERTIFICATIONS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✔ CC – Certified in Cybersecurity (ISC²)
✔ CCNA – Cisco Certified Network Associate
✔ RHCSA – In Progress
I bring real enterprise experience not just lab setups. My work spans SOC
operations at a national-scale defense retail chain, infrastructure security
across border terminals and logistics sites, and ongoing managed security
services for international clients.
📩 Available for one-time projects, ongoing retainers, and urgent engagements.
Let's secure your infrastructure message me to get started.
System Administration
Linux
Linux System Administration
SSL
Antivirus & Security Software
Nagios Core
System Monitoring
PfSense
Incident Response Plan
Kali Linux
Intrusion Detection
Network Security
Zabbix
VMware vSphere
Microsoft Active Directory
Microsoft Endpoint Manager
Security Operation Center
Information Security
Lakshan S.
Colombo, Sri Lanka
$25/hr
4.0
1 jobs
Cybersecurity Engineer | SOC & SIEM | Microsoft 365 Security | C# .NET Developer
I am a cybersecurity engineer with hands-on experience in SOC operations, SIEM design and implementation, Microsoft 365 security, and custom software development. My work covers both operating security tools and building security platforms from the ground up.
I focus on practical security. How logs are collected. How detections are written. How identities are abused. How alerts should behave in real environments. Not checkbox security.
SIEM Design, Build & Implementation
I have experience building and operating SIEM environments, not just using existing dashboards.
Microsoft Sentinel
• Designing Sentinel workspaces and data architecture
• Onboarding Microsoft 365, Entra ID, Defender, and Azure logs
• Writing KQL queries for detections and investigations
• Building analytic rules aligned to MITRE ATT&CK
• Creating workbooks for security visibility and reporting
• Alert triage and incident workflows
AWS-Based SIEM & Cloud Security Labs
• Designing cloud-native SIEM labs using AWS
• Centralized log ingestion from cloud and endpoint sources
• Threat detection using cloud logs and endpoint telemetry
• Building dashboards and detections for real-world attack scenarios
• Hands-on work with brute force detection, privilege misuse, and suspicious access patterns
Wazuh SIEM
• Wazuh Manager and agent deployment
• Log source onboarding and validation
• Agent configuration and health verification
• Rule review and alert behavior analysis
• Endpoint security monitoring using Wazuh
Splunk
• SPL-based detection engineering
• Custom searches and correlation logic
• Security dashboards and visualizations
• Log normalization and noise reduction
Security Operations (SOC)
• Security alert triage and investigation
• False positive analysis and alert tuning
• Incident escalation workflows
• MITRE ATT&CK mapping
• SOC documentation and handover notes
Microsoft 365 & Identity Security
• Microsoft Entra ID administration
• MFA enforcement and Conditional Access baselines
• Admin role design and least-privilege access
• Microsoft Defender for Endpoint and Office 365
• Identity-related alert investigation and response
Software Development Experience
I also design and build custom applications and websites, often used for internal tooling, reporting, and automation.
Desktop Applications
• C# and .NET (WinForms, WPF)
• Internal tools for monitoring and reporting
• Secure handling of credentials and system data
Web Development
• Responsive websites built from scratch
• HTML, CSS, JavaScript
• Backend development using C# and .NET
• REST API integrations
I work code-first using VS Code or Visual Studio. No drag-and-drop builders.
Tools & Technologies
• Languages: C#, .NET, JavaScript
• SIEM: Microsoft Sentinel, Splunk, Wazuh
• Cloud: AWS, Azure
• Microsoft Stack: Entra ID, Defender, Microsoft 365
• Query Languages: KQL, SPL
• Operating Systems: Windows, Linux
What You Can Expect
• SIEMs that are actually usable
• Detections that reduce noise
• Clear documentation
• Strong understanding of security, cloud, and systems
• Direct, honest communication
Suitable Projects
• SIEM design and implementation
• Microsoft Sentinel or Splunk detection engineering
• SOC operations and alert tuning
• Microsoft 365 security hardening
• Cloud security monitoring
• Custom security tooling and applications
If you’re looking for someone who understands how security works in real environments and can both build and operate security systems, I’m happy to discuss your project.
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