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$45 hourly
Liang Y.
- 5.0/5
- (55 jobs)
Hi there, Are you finding a 100% Job Success, Top Rated freelancer, to join your important and exciting project, with a strong sense of responsibility, with a strong sense of reputation, with a strong sense of long-term cooperation ??? Are you finding an experienced Devops engineer? To help you to build up the cloud infrastructure hosting your critical applications on AWS,Azure,Alibaba Cloud etc, to build the CI/CD pipeline, kubernetes, Docker environment. Are you finding someone with really rich experience in IT infrastructure? To help you to manange your IT infrastructure including your network/server/cloud infrastructure. Do you need help to migrate your business to cloud? With someone familiar with AWS/Ali Cloud/Azure/Office 365. That's me!!! Totoal 13-years of IT career, 8-years experience on IT infrastructure management, 5-years as devops engineer to manage cloud infra and CICD in large software company. 3-years experinece in upwork as freelancer, 100% job success!! Top rated freelancer!!! Professional skills: - AWS, Azure, Alibaba Cloud - Linux, kubernetes, docker, CICD, jenkins,git, github - Networking infrastructure, VPN, wireguard, openvpn - Wordpress - Email infrastructure - Shell, Nodejs, Vuejs, Java

Network Administration
Email System
Vue.js
Node.js
Jenkins
Alibaba Cloud
WordPress
CI/CD
DevOps
Microsoft Azure
Terraform
Docker
Kubernetes
Linux
Amazon Web Services
$25 hourly
Qunzhi L.
- 4.7/5
- (16 jobs)
Hello, my English name is Change Law(while Qunzhi Luo is the Pinyin of my Chinese name, which is on my national ID). I have more than 7 years of experience in system/hardware/database admin, about 3 years of programming(C++ and python). 2016.03 IBM Certified System Administrator AIX V1 2007.10 Oracle Certified PL/SQL Developer Associate 2007.05 Advanced Programmer Certification 2006.05 College English Test-6 with 552 degrees out of 750

Network Administration
Amazon Web Services
MikroTik RouterOS
AutoHotKey
Microsoft Windows
Storage Area Network
Linux System Administration
Bash
C++
Python
$7 hourly
Mazidul H.
- 5.0/5
- (2 jobs)
Scale Growth 📈 Searchability 🔎 Visibility 👀 Revenue 💲 You’re likely looking for an SEO & Digital Marketing Expert because of one or more of the following reasons: ✅Your website isn’t being found in the search engines. ✅Your website traffic has declined recently and you don’t know why. ✅Suddenly, your volume of incoming calls and leads has declined. ✅You’re starting a new website and want to ramp up a new business quickly. With 3 years of proven track record in SEO and digital marketing, I am dedicated to helping businesses thrive online. With expertise in SEO and Digital marketing, content marketing, social media management (SMM), and paid media advertising, I offer comprehensive solutions to drive traffic, increase engagement, and boost conversions to help businesses grow and succeed. If any of these four pain points ring a bell, you’ve discovered the right SEO & Digital Marketing specialist. 🔥 Tools I'm using: Ahrefs, SemRush, Screaming Frog, SEO Powersuite, Ubersuggest, Google Analytics, Google Search Console. 👉What Can I Deliver: ✅Technical Audits ✅Keyword Research & Competitive Analysis ✅Content Marketing ✅Social Media Management ✅Paid Media Advertising (PPC, SEM, Display Ads) ✅Audits Report ✅Email Marketing ✅A/B Testing & Conversion Rate Optimization (CRO) ✅SEO Content ► Why Choose Me? I always provide my full support to my client. Because client satisfaction is my first priority. I always follow Google's latest updated technology in my work. ★ 24/7 Hours Availability for any Kind of Support ★ I have experience in digital marketing, so I act accordingly in my recommendations ★ As I have already worked for two big China SEO firms under white label, I understand your website's needs & clients’ So, if you're ready to take your business to new heights with Digital Marketing and SEO, get in touch with me today! I am confident that I can help you achieve the results you're looking for and provide you with a service that exceeds your expectations. Warm Regards, Mazidul Haque Upwork: Advanced Search / 𝐒𝐄𝐎 / Hire SEO / Technical SEO / SEO Link Building / Local SEO / 𝐎𝐧 𝐩𝐚𝐠𝐞 𝐒𝐄𝐎 / Off Page SEO / SEO Consultant / 𝐒𝐄𝐎 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 / SEO Keyword Research / Organic Traffic / SEO Services / Google Search You can find me by the following tags/keywords: SEO Expert | Link Building | Keywords Optimization | Guest Posting | eCommerce SEO | Link Building Services | Search Engine Ranking | White Hat Link Building | Search Engine Optimization | Backlinks | Website SEO | SEO Link Building | Site SEO | Real Estate SEO | SEO for Real Estate Website | SEO for Travel Website | SEO for Education Website | Off-site SEO | On-Site SEO | On-Page SEO | Off-page SEO | SEO Specialist | SEO Strategist | 𝐒𝐄𝐎 𝐒𝐞𝐭𝐮𝐩 & 𝐂𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐭𝐢𝐨𝐧 | Shopify SEO | WordPress SEO | WordPress SEO Expert | Wix SEO | Increasing site traffic | Yoast SEO

Network Administration
Website Security
Open Source
Web Proxy
Data Backup
Ethical Hacking
WordPress Malware Removal
cPanel
Network Penetration Testing
SQL
SEO Content
SEMrush
Ecommerce SEO
Local SEO
Facebook Advertising
Digital Marketing
Social Media Marketing
Shopify SEO
On-Page SEO
Google Ads
SEO Backlinking
Search Engine Optimization
Email Marketing Strategy
SEO Setup & Configuration
Off-Page SEO
$75 hourly
Cherry Y.
- 0.0/5
- (0 jobs)
I’m a Data Engineering experienced in developing for Big Data and Artificial Intelligence programs, such as precision marketing, city smart brain construction, business analytics, critical customer churn analysis, video content recommendation. * more than 12 years of Industry experience in the machine learning /software engineering role with a Product/SaaS company. * experienced in building and deploying machine learning models; strong understanding of end-to-end machine learning pipelines and components. * strong coding proficiency in Python. * familiar with several of the following: TensorFlow, PyTorch, scikit-learn, Kubernetes, Docker, Solr/ElasticSearch. * have strong understanding of Computer Science/Engineering fundamentals and first principles covering system design, data structures, architecture, and design patterns. * SQL experience * have strong research skills: the ability to dig through deep learning literature and translate this into products and value for users.

Network Administration
Agile Software Development
Linux System Administration
Tableau
Kubernetes
Apache Hadoop
Cloud Computing
Database Administration
SQL
Data Analytics
Product Development
Machine Learning Model
Artificial Intelligence
Big Data
Machine Learning
$50 hourly
Jason B.
- 0.0/5
- (0 jobs)
I’m a developer experienced in building websites for small and medium-sized businesses. Whether you’re trying to win work, list your services, or create a new online store, I can help. config network 、 thinkphp 、mysql、Windows、debian、centos、fw、IPS、china cyber sucrity law， solute any problem about network or server

Network Administration
Information Security Audit
Security Testing
OS Security
Windows Server
Linux
Network Engineering
Cybersecurity Monitoring
Securities Law
Security Policies & Procedures Documentation
$20 hourly
weiwei F.
- 5.0/5
- (1 job)
🛡️ IT Infrastructure Expert | Secure Email · VPN · Server Hardening · Remote Support 📍 Shenzhen, China | 30+ hrs/week | Languages: 中文 (Native), English (Written) 💬 Async, professional, and fully documented support via IM (Upwork chat, Telegram, Slack) 💡 “I don’t need fancy tech talk. I just want everything to work — securely, efficiently, and without surprises.” If that’s you — you’re exactly the kind of client I support. I’m a senior IT infrastructure engineer with over 10 years of experience helping founders, technical teams, and global SMEs build and maintain secure, stable, and fully documented systems. I specialize in async collaboration and systems that just work — with logs, SOPs, and no micromanagement required. 🚀 What I Can Deliver ✅ Email Infrastructure & Deliverability • Enterprise-grade email setup: Postfix, Mailtrain, Mautic • DNS configuration: SPF, DKIM, DMARC, rDNS • Deliverability troubleshooting, bounce management, warmup automation ✅ VPN & Remote Network Access • WireGuard, OpenVPN, SoftEther, enterprise routing • Cisco / MikroTik / OpenWRT / iKuai configuration • Remote workforce access, geo-restricted tunnels, user audit logs ✅ Linux Server Deployment & Optimization • Ubuntu, Debian, CentOS system builds • Docker environments, LEMP/LAMP stack, PHP/MySQL tuning • Secure file sync (rclone / MinIO), systemd hardening, cron automation ✅ Server Security & Monitoring • Fail2Ban, SSH firewall lockdown, UFW/iptables hardening • Centralized logging (Zabbix, Wazuh, Grafana) • Real-time alerting via webhook, Slack, Telegram ✅ Backup & Disaster Recovery • Cloud + NAS + incremental snapshots • Scheduled sync, backup integrity testing, recovery plans • Clean documentation and restore instructions ✅ Network Architecture & Firewall Engineering • VLAN, ACL, NAT, static/dynamic routing • Cisco IOS & ASA configuration (VPN, access rules, IPsec tunnels) • Office & datacenter segmentation, zero-trust perimeter design ✅ Automation & Health Auditing • Bash/Python scripts for status, cleanup, and scheduled inspection • Cron-based healthchecks, daily logs, and IM-based alerts • Fully documented technical handovers ✅ Remote IT Support & Documentation • 100% async, IM-based support (no calls needed) • Full English documentation: network diagrams, server manuals, access sheets • Monthly reporting available: status, changes, security, metrics 🎯 Why Work with Me? • High-trust async delivery: I work independently, update clearly, and follow checklists • Enterprise-ready thinking: I don’t patch — I design for reliability and scale • Documented results: Every config, log, and action is tracked and handed off properly • Long-term support available: from build to maintenance to sunsetting • Secure, structured, and proactive — I think like an infrastructure owner 📦 Available Services 🔹 One-time projects • Email system deployment • VPN configuration • Secure server build • Network/firewall planning • Monitoring system rollout 🔹 Long-term monthly plans • Patch management • Server health & uptime checks • Access control reviews • Backup, logs, and infrastructure reporting 📬 Ready to simplify and secure your infrastructure? Just describe your system — I’ll turn it into a clear, working, and well-documented solution.

Network Administration
System Deployment
System Installation & Upgrades
Desktop & Laptop Support
Website Builder
Mobile App Development
ITIL
IT Support
$18 hourly
Gunther H.
- 0.0/5
- (0 jobs)
I’m an experienced DevOps and System Engineer with over 10 years of hands-on experience in Linux/Windows administration, virtualization (VMware & Proxmox), and network infrastructure. I specialize in automation using Python and Shell scripting, including backup tools, snapshot schedulers, and monitoring integrations. I’ve also deployed and managed Zabbix, set up VPNs (ZeroTier, WireGuard), configured firewalls, and supported complex IT infrastructure in enterprise data centers. I’m detail-oriented, reliable, and committed to delivering high-quality solutions. Let’s work together to streamline and secure your systems.

Network Administration
DevOps
Network Engineering
Backup Administration
Information Security
Remote Connection Support
IT Infrastructure
System Monitoring
Unix Shell
Zabbix
Proxmox VE
VMware Administration
Python Script
Windows Server
Linux System Administration
$15 hourly
Long Q.
- 0.0/5
- (0 jobs)
👋 Hello! I'm an experienced IT Infrastructure & Network Security Manager with over 3 years of hands-on experience designing, securing, and managing enterprise-grade IT systems. I currently serve as the Security Supervisor at Fujian New Pentium Business Consulting Co., Ltd., a company with over 3,000 employees, where I lead end-to-end network operations, security policies, and server infrastructure. 🛠️ My core expertise includes: Network deployment & maintenance (Cisco, Huawei, VLAN, firewall, NAT, ACLs) VPN setup & secure remote access (OpenVPN, WireGuard, SoftEther) Linux/Windows server administration (Apache/Nginx, Active Directory, SFTP, DNS, mail servers) Data security, firewall hardening, access control, and internal security audits 💼 Key projects I've led: Secure VPN interconnection between headquarters and branch offices Encrypted file transfer system for sensitive banking data via SFTP Internal domain controller, secure DNS infrastructure, and local mail system setup I bring real-world enterprise-level experience, strong technical skills, and a proactive mindset to every project I take on. Let’s build a smarter, faster, and more secure infrastructure for your business.

Network Administration
Information Security
Compliance
Windows Server
Linux
VPN
Router
Security Assessment & Testing
Security Infrastructure
Network Analysis
Huawei USG
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