IT Infrastructure & Security Engineer | 3CX | FortiGate | VMware | Microsoft 365 | Networking
I help small businesses and MSPs keep their IT infrastructure reliable, secure, and available.
With experience across IT support, networking, VoIP, firewalls, virtualization, Microsoft 365, servers, monitoring, backups, and security, I can troubleshoot existing environments, deploy new solutions, and provide ongoing technical support.
What I can help you with:
IT Support & Helpdesk
* Remote IT support and troubleshooting
* Tier 1โ3 technical support
* Windows and endpoint issues
* User onboarding and offboarding
* Printer, application, and connectivity issues
* Ticket management and documentation
* Ongoing IT support for businesses and MSPs
3CX & VoIP
* 3CX deployment and administration
* V18 to V20 migration
* SIP trunk configuration
* IVR, queues, extensions, and DID routing
* IP phone provisioning
* SBC configuration
* Call routing and troubleshooting
* SIP registration, NAT, RTP, and connectivity troubleshooting
FortiGate & Network Security
* Firewall deployment and configuration
* Firewall policies and NAT
* SSL-VPN and remote access
* Split tunneling
* VLANs and network segmentation
* Web filtering
* Firewall hardening
* Access control and security best practices
VMware & Virtualization
* VMware ESXi and vCenter administration
* Virtual machine deployment
* P2V and V2V migrations
* VM performance troubleshooting
* Host maintenance
* Virtual infrastructure support
Backup & Disaster Recovery
* Veeam configuration
* Backup monitoring and health checks
* Restore testing
* Backup troubleshooting
* Disaster recovery planning for virtualized environments
Microsoft 365 & Server Administration
* Microsoft 365 administration
* Exchange Online
* User and mailbox administration
* Intune device enrollment and management
* Endpoint management
* Active Directory
* Windows Server administration
* RHEL/Linux administration
Networking
* Network design and deployment
* Switching and routing
* VLAN configuration
* Wi-Fi troubleshooting
* Network monitoring
* Connectivity and performance troubleshooting
* Infrastructure optimization
How I work:
I focus on identifying the root cause of an issue rather than applying temporary fixes. I use structured, ITIL-aligned practices for incident management, troubleshooting, changes, and documentation.
You can expect clear communication, practical troubleshooting, proper documentation, and regular updates throughout the project.
Whether you need one urgent issue resolved, a new infrastructure deployed, or an engineer for ongoing IT support, I can work with your existing environment and processes.
Send me a message with your issue, project requirements, or current environment. I'll review what you need and provide a clear approach and next steps.
4X Oracle NetSuite Certified consultant, US-based. I fix NetSuite after go-live: broken workflows, reports nobody trusts, integrations failing silently, teams quietly back on spreadsheets.
Most companies don't have a NetSuite problem. They have a process problem their NetSuite is exposing. I sit between the two โ enough finance and operations background to see what's actually broken, and the technical depth to fix it in the system.
15+ years in ERP, covering the full NetSuite lifecycle: implementation and migration, post-live rescue, custom SuiteScript automation, Celigo and Boomi integration, and hands-on team training.
๐ช๐๐๐ง ๐ ๐๐ข
Implementation and migration โ End-to-end NetSuite implementations, migrations
from QuickBooks, Sage or Dynamics, multi-subsidiary and multi-currency setup,
chart of accounts design, and data migration with GL history intact. I also take
over stalled implementations where the previous consultant left things broken.
Post-live optimization and rescue โ Health checks and gap analysis, fixing broken
Order-to-Cash and Procure-to-Pay workflows, financial and GL cleanup, month-end
close optimization, and system stabilization after a rough go-live.
Integration โ Celigo and Boomi build and troubleshooting, NetSuite to Shopify,
Amazon or BigCommerce, NetSuite to Salesforce or HubSpot, REST and SOAP API
connections, Tipalti payment automation, and 3PL, WMS and logistics integrations.
Customization and development โ SuiteScript 2.1 (scheduled, user event, client,
RESTlet, Suitelet), SuiteFlow approval workflows, custom forms and records,
advanced PDF and HTML templates, SuiteAnalytics and NSAW dashboards, and custom
segment reporting.
Training and user adoption โ Role-based training for finance, operations,
warehouse and sales teams, administrator and power-user programs, and custom SOP
documentation. Live sessions, recorded, with reference guides.
๐ช๐๐ฌ ๐๐๐๐๐ก๐ง๐ฆ ๐๐๐ข๐ข๐ฆ๐ ๐ ๐
4X Oracle NetSuite Certified โ SuiteFoundation Specialist, BI and Reporting
Associate, Financial Associate, AI Foundations Associate.
Functional and technical in one person. I understand the process before I touch
the configuration, and I don't hand off the hard part.
US-based in Central Time, so I overlap the full business day East and West.
Root-cause fixes. I solve the underlying problem, not the symptom.
Plain-English updates and full documentation on every engagement.
๐๐ก๐๐จ๐ฆ๐ง๐ฅ๐๐๐ฆ
Manufacturing, distribution, eCommerce and retail, logistics and 3PL, professional services, oil and gas, non-profit.
๐๐๐ง'๐ฆ ๐ง๐๐๐
Not sure where to start? I offer a free 30-minute NetSuite discovery call โ no pitch, just an honest read on what's wrong and the fastest path forward.
Message me or invite me to your job. I usually respond within a few hours during US business hours.
๐ **VOIP & TECHNICAL SUPPORT SPECIALIST | RingCentral | QuickTalk | Ringover | TCR | AI Automation**
**Having issues with your VoIP, business phone system, SMS registration, or automation? I can help you find the problem, fix it, and make your workflow more efficient.**
Iโm a **VoIP & Technical Support Specialist** with experience supporting communication platforms, SaaS applications, cloud systems, business software, and automated workflows.
My approach is simple:
**๐ Find the root cause โ ๐ ๏ธ Build the solution โ โก Automate the process**
### ๐ VOIP & BUSINESS PHONE SYSTEMS
I can assist with:
* **RingCentral** setup, configuration & troubleshooting
* **QuickTalk** setup and call-flow troubleshooting
* **Ringover** configuration and technical support
* Business phone numbers & extensions
* Call routing & forwarding
* IVR / Auto Attendant
* Call queues
* Business hours & call schedules
* Voicemail configuration
* Inbound & outbound call troubleshooting
* Call quality & connectivity issues
* User/agent setup
* CRM & third-party integrations
* General VoIP / SIP troubleshooting
### ๐ฌ SMS, TCR & A2P 10DLC
I can also assist with business messaging workflows involving:
* **The Campaign Registry (TCR)**
* A2P 10DLC registration support
* Brand & campaign registration
* SMS/MMS business messaging setup
* Messaging campaign configuration
* Troubleshooting registration and messaging issues
* Opt-in / opt-out workflow considerations
* Business texting configuration
* Connecting messaging platforms with CRM and automation tools
### ๐ค AI & BUSINESS AUTOMATION
I help businesses eliminate repetitive manual tasks using:
* **n8n**
* Zapier
* Pipedream
* REST APIs
* Webhooks
* AI-powered workflows
* CRM automation
* Lead automation
* Customer inquiry automation
* Data synchronization
* Automated notifications
* AI integrations
* Custom business workflows
### ๐ป TECHNICAL SUPPORT
My technical support experience includes:
* SaaS application support
* Software troubleshooting
* Windows & desktop support
* Microsoft Azure
* SQL/database troubleshooting
* Website & web application troubleshooting
* User access & permissions
* Account configuration
* Network & connectivity troubleshooting
* Technical documentation
* Knowledge-base creation
### ๐ฏ WHY WORK WITH ME?
I don't just look for a quick workaround. I focus on **identifying the root cause and creating a reliable solution**.
Whether you need help with **RingCentral, QuickTalk, Ringover, TCR/A2P 10DLC, VoIP troubleshooting, business SMS, CRM integrations, or AI automation**, I can help you connect your systems and streamline your operations.
**Your technology should make your business easier โ not harder.**
๐ **Let's troubleshoot it. Let's fix it. Let's automate it.**
Christian L.
IT Systems Engineer, Security, Networking & Server Admin
Visalia, California
$100/hr$100 per hour5.0 (2) 4 jobs $100+ total earnings
I'm an IT professional with over 12 years of experience, including 10+ years in the MSP space supporting clients across various industries. I'm a jack-of-all-trades, from network security and server infrastructure to day-to-day troubleshooting, so I can adapt to whatever your environment looks like.
Some of my technology skills:
Windows Server
Email Migrations (Microsoft, GoDaddy, Kerio, Google)
Computer Profile/Domain Migrations
Active Directory
Group Policy
Hyper-V
Automation Scripting & Workflow Development
Mobile Device Management (Jamf, Lightspeed, Manage Engine)
Chromebook Deployment & Management
Firewalls
Threatlocker
EDR & Antivirus (Defender, Bitdefender, Huntress, SentinelOne)
Backup & Disaster Recovery Planning
Data Retrieval & Migration
PowerShell
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