Networks look like a puzzle to most people. To me, they're just a problem I know how to solve.
What I deliver:
Network audits & optimization
Design & migration - new builds, office expansion, hybrid/cloud
Security hardening - ACLs, segmentation, firewall policies, VPNs
Troubleshooting escalations - when your team is stuck, I step in. Root causes, not symptoms.
Mentoring / on-call - fractional architect for teams without a full-time role
Technical depth:
Areas and stack:
Routing & switching - Multi-vendor.
Security - PFSense, OPNSense, Fortinet, Palo Alto, Cisco ASA/FTD, VPNs, segmentation
Linux - Any distro, bash scripting, performance tuning
Virtualization - Proxmox, VMware, Hyper-V, KVM
Automation - Ansible, Terraform
Observability - Zabbix, Splunk, SNMP, syslog
Background:
30+ years in the field, 7 as a Cisco Networking Academy Manager and Instructor.
I've designed large-scale enterprise networks for government, healthcare, and finance — example a maternity center where downtime isn't an option, campus networks for universities, and an airport-wide wireless solution. I've delivered security projects following both international best practices and local regulatory standards.
I've trained and worked alongside engineers across Australia, New Zealand, the US, and beyond, and I learn as much from them as they do from me.
I work self-paced, lead or go solo, and I'm still adding tools: Proxmox and Splunk a few years ago, Ansible and Terraform last year. This year I'm diving into AI infrastructure — GPU clusters, distributed training, high-throughput data pipelines. I'm also building deeper into Python and scripting to support automation and development from the ground up.
How I work:
Clear communication, no jargon. English fluent.
Documentation-driven: diagrams, runbooks, handoff notes.
Available 20–40 hrs/week.
Fixed-price or hourly — whatever fits.
Ready to solve your network puzzle? Send me an invite.
Linux System Administration
Network Security
VPN
Cisco Certified Network Associate
Network Design
Cisco IOS
Server Virtualization
OpenVPN
Cisco Certified Design Associate
Ubuntu
Wireless Security
Wireless Network Implementation
Proxmox VE
PfSense
Ismael V.
Hermosillo, Mexico
$12/hr
5.0
33 jobs
Greetings!
As a seasoned technical support specialist with over 10 years of industry experience, I bring comprehensive expertise in resolving a wide range of IT challenges. My background includes extensive work in customer service, alongside hands-on experience in wired and wireless network management.
My skill set encompasses installation, configuration, upgrading, and maintenance across various IT solutions, spanning network security, SaaS services, server management, VoIP solutions, and SAN/NAS storage systems. Backed by certifications such as Helpdesk Habits 2023 and 3CX Advanced Certified Engineer v18, I ensure efficient problem-solving and optimal performance.
As a technical support specialist, I have frequently engaged in tasks commonly associated with MSPs. These tasks include:
•Remote Monitoring and Management (RMM): remotely monitor client systems, automate tasks, patching, and facilitate proactive maintenance this includes monitoring network devices, servers, and endpoints in real-time, identifying potential issues before they escalate into critical problems, using platforms like NinjaRMM, Zabbix or Datto.
•Backup and Disaster Recovery (BDR): Configuring and managing backup solutions such as Datto or Veeam to safeguard critical data and facilitate swift recovery in case of emergencies.
•Endpoint Security: Deploying and managing antivirus, anti-malware, and firewall solutions like Sophos or Bitdefender to protect client endpoints from cyber threats.
•Ticketing Systems: Proficient in using ticketing systems such as Autotask PSA or Zendesk to track, prioritize, and resolve client issues efficiently.
•Documentation: Maintaining comprehensive documentation of client systems, configurations, and procedures using platforms like IT Glue.
•SaaS service management (Google Workspace and M365): Contribute to enhancing productivity, collaboration, and security for their clients, user account management, email configuration and troubleshooting, data migration, implementing security measures, mobile device management, license management and, training, and user adoption.
Why Partner with Me?
•Technical Proficiency: Equipped with the knowledge and skills to address complex technical issues effectively.
•Responsive Support: Available during PST & GMT-5 time zones, I provide timely assistance tailored to your needs.
•Adherence to Best Practices: I follow industry standards rigorously to deliver reliable solutions.
•Clear Communication: I maintain transparent communication channels via Upwork, email, or Skype for seamless collaboration.
•Unwavering Availability: As a dedicated full-time freelancer on Upwork, I'm committed to providing consistent support.
•Dependability: You can trust me to meet deadlines and deliver results without compromise, even under pressure.
With a passion for problem-solving and a dedication to client satisfaction, I'm ready to leverage my expertise to support your technical endeavors. Let's work together to overcome obstacles and achieve your IT objectives.
Thank you for considering my expertise. I look forward to supporting your projects and success.
Warm regards,
Network Administration
Microsoft Active Directory
VPN
Server Virtualization
Office 365
WiFi
Google Workspace Administration
IT Management
3CX
Firewall
Customer Service
Storage Area Network
IT Support
Remote Management Software
Ticketing System
OMAR AARON L.
Tecate, Mexico
$6/hr
5.0
8 jobs
I’m a professional individual with a very strong work ethics, punctual, excellent communicator, stable work environment, works well in a team, work long hours, I am a problem solver.
I provide a high level of customer satisfaction; I’m familiar with regulations for Customer service, decision-making and planning abilities. I have expertise in delivering support services end-user and enterprise and resolving network problem.
In my previous job and experience I provided phone and chat support for end-users and small business, provided internal support by providing feedback, training and development to new hires.
My current position is in monitoring networks of hotels we provide support to, I use my knowledge in trouble with onsite staff and IT , optimization for the wifi networks, setting up new equipment , configuring network equipment like switches and access points alongside network design.
I have wide experience working on hotel networks, in the following:
- Fiber cutovers
-DVR camera setups
-PMS setup
-WIFI Network equipment for hotels guest networks.
-POS Terminals.
-Hotel enterprise networks (VLAN)
I do configuration, programing, support, installation and monitoring of the following network brands.
-Unify network setup
-Rokus networks
-Mesh network
-Radius gateway networks
-Meraki networks
-Cisco networks
-Extreme networks
-HP procurve networks
-Mikrotic
My availability can be negotiated and I prefer long terms projects.
Virtual LAN
Cisco Meraki
Network Monitoring
Network Design
Network Engineering
Wireless Network Implementation
Hardware Troubleshooting
Computer Skills
Computer Network
Erubiel O.
Mexico City, Mexico
$45/hr
5.0
14 jobs
IT Infrastructure Manager And Technical Support Professional Providing more than 16 years of experience administering and managing technological services and IT infrastructure´s life cycle according ITIL best practices, IT Project Expert focused on management of technological projects strategically developed for a World-class enterprise.
CORE COMPETENCIES
Networking - Network Security - IPS - DLP - Firewall - ITIL V4 Foundations - VMWare & Hyper-v, Project Management - Management and administration of company assets - Budget Management - Assets and services acquisition - Negotiator - Vast knowledge in hospitality areas - Enterprise Level Tech Support Expert - Human Resources Management - Leadership - Pro active - Service Attitude - Customer Focused - Work for qualified and quantifiable objectives - Working under pressure - Acronis Solutions - Storage Solutions - Network Protocols - MCSE Infrastructure 2008 - Connect Wise - Kaseya BMS - IT Glue - LabTech
Microsoft Active Directory
Windows Server
Windows Administration
Data Backup
Security Infrastructure
Microsoft Server
Acronis
Virtualization
Remote IT Management
Windows 10 Administration
VMware Administration
ITIL
Network Engineering
Microsoft Azure
ConnectWise Automate
Aleksei T.
Playa del Carmen, Mexico
$45/hr
4.4
96 jobs
Experienced DevOps & Cloud Engineering Professional | AWS | Kubernetes | Blockchain | AI/ML Integration
With over 20 years of extensive experience in software engineering and DevOps, I specialize in designing robust, scalable cloud infrastructures and innovative technological solutions. My expertise spans multiple domains, including cloud computing, containerization, blockchain development, and cutting-edge AI/ML integrations.
Core Competencies:
Cloud Infrastructure (AWS): Terraform IaC, EC2, VPC, ELB, RDS, IAM, CloudWatch
Containerization: Kubernetes (EKS, self-hosted clusters), Docker
CI/CD Pipelines: GitLab, GitHub Actions, Serverless Framework
Programming Languages: Python, Node.js, Golang
Blockchain & Web3 Development: Ethereum, Smart Contracts, DApps
Serverless Architecture: AWS Lambda, Serverless Framework
Monitoring & Observability: CloudWatch, Prometheus, Grafana, ELK Stack
Recent Technical Achievements:
Successfully integrated advanced AI technologies including Hugging Face, LangChain, and OpenAI for a sophisticated chatbot framework
Developed blockchain applications with complex wallet and transaction management
Architected scalable Kubernetes deployments with advanced networking configurations
Implemented comprehensive security frameworks with multi-factor authentication
Blockchain & Web3 Expertise:
Specialized in developing decentralized applications (DApps) using web3.py, creating wallet solutions, managing transaction signing, and integrating blockchain technologies with web applications. Experienced in working with Ethereum nodes, smart contract interactions, and utilizing The Graph for advanced data querying.
Cloud & DevOps Strengths:
Proven track record of designing secure, scalable AWS architectures. Expertise in infrastructure automation, resource optimization, and implementing robust CI/CD pipelines. Skilled at managing complex deployments across multiple environments with a focus on efficiency and cost-effectiveness.
AI/ML Integration Specialist:
Experienced in connecting diverse AI technologies, fine-tuning NLP models, and creating seamless workflows using tools like LangChain, Flowise, and various AI platforms. Committed to ensuring AI safety, ethical standards, and optimal performance.
Professional Approach:
Collaborative team player with strong cross-functional communication skills
Proven ability to mentor teams and drive process improvements
Detail-oriented with a strategic approach to technology integration
Continuous learner, always exploring emerging technologies and best practices
Let's build innovative, scalable solutions together!
DevOps
Terraform
CI/CD
Kubernetes
Python
Node.js
Serverless Computing
Docker
API Development
Django
SQLAlchemy
GitLab
Flask
FastAPI
Amazon ECS for Kubernetes
Enrique G.
Zapopan, Mexico
$50/hr
4.6
12 jobs
As an experienced Appsheet developer and data analyst, I am excited to offer my services to help revolutionize your business processes. With a strong background in no-code application development, I have successfully created and deployed multiple custom applications for various industries, resulting in improved efficiency and streamlined operations.
In addition to Appsheet development, my expertise in data analysis allows me to transform raw data into valuable insights, enabling you to make informed decisions and optimize your business strategies. My ability to collaborate effectively with cross-functional teams ensures seamless integration of these solutions into your organization.
AppSheet
Information Analysis
Analytical Presentation
Data Analysis
Google Sheets Automation
Google Apps Script
Unity
Blender
GIS
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