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高级威客
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雇用 sktricks
👋 Hi, I’m Sarath K 🚀 Senior Linux System Administrator & DevOps Engineer Trusted by startups, SaaS founders, agencies, and enterprises worldwide 🌍 With 10+ years of hands-on experience, I help businesses deploy, fix, migrate, secure, and optimize production servers — fast, clean, and without downtime. 🔥 Clients...👋 Hi, I’m Sarath K 🚀 Senior Linux System Administrator & DevOps Engineer Trusted by startups, SaaS founders, agencies, and enterprises worldwide 🌍 With 10+ years of hands-on experience, I help businesses deploy, fix, migrate, secure, and optimize production servers — fast, clean, and without downtime. 🔥 Clients Hire Me When: 🚨 Their server is down or unstable 📧 Emails are failing or landing in spam ☁️ Cloud setups are misconfigured 🧩 Previous developers couldn’t fix the issue ⚡ They need urgent, expert-level help 👉 And I deliver — often within minutes or hours, not days. 🏆 What I Do Best (Proven by 90+ Reviews) 🐧 Linux & Server Administration - Ubuntu, Debian, CentOS, AlmaLinux, Rocky, RedHat - Performance tuning & optimization - Server hardening & monitoring - Malware removal & server recovery - Zero-downtime migrations ☁️ Cloud & DevOps - AWS, Google Cloud, Azure, DigitalOcean, Linode, Hetzner, OVH - EC2, Lightsail, Load Balancers, Firewalls - Docker & Docker Compose - CI/CD & deployment automation - Production-ready cloud setups - Web & App Hosting - Apache, Nginx, LiteSpeed - PHP, Laravel, CodeIgniter, Node.js, Python - React / Next.js deployments - SSL, HTTPS, Reverse Proxies - WebSockets & real-time apps 🗄️ Databases - MySQL, MariaDB, PostgreSQL - Performance tuning & optimization - Database recovery - Backup & restore strategies 📧 Email & DNS (Specialist Area) - Zoho, Google Workspace, Microsoft 365 - Postfix, Dovecot, Zimbra, iRedMail - SPF, DKIM, DMARC (Deliverability Expert) - Cloudflare DNS & security 🎛️ Control Panels - cPanel / WHM, Plesk, DirectAdmin - ISPConfig, CyberPanel, Virtualmin 🏢 Secure multi-tenant hosting environments - Security & Compliance - Server hardening & best practices - OWASP Top 10 mitigation - Firewalls & intrusion prevention - Malware cleanup & prevention - OpenAI & ChatGPT Integration 💬 Why Clients Love Working With Me ✔ ⚡ Extremely fast response ✔ 🗣️ Clear & honest communication ✔ 🧠 Fixes issues others couldn’t ✔ 💪 Goes beyond scope when needed ✔ 🧘 Calm under pressure (production emergencies) ⭐ “Cloudflare support was useless — Sarath fixed everything in 30 minutes.” ⭐ “Best server guy I’ve ever worked with.” ⭐ “Solved in minutes what others couldn’t in weeks.” 📩 Let’s Get Started If you need a reliable expert who gets things done right the first time, send me a message. 🔥 I’m ready to help you now. — Sarath K Linux • DevOps • Cloud • Servers 收起 -
雇用 engkarimismail
✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in...✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in firewalls, scripting, containerization, and database management. Additionally, I specialize in mail servers, backup systems, and cloud technologies. With advanced networking skills, including Cisco routing, VLAN management, VoIP/IP telephony, and penetration testing, I am well-equipped to handle complex IT infrastructures. I am dedicated to delivering reliable solutions, ensuring data integrity, and enhancing system performance. ✅Send me now 24/7 Availability Unlimited Revisions Fast Response ✅ Server Operating Systems Windows Server (2003 to 2024) | Ubuntu | CentOS | Debian | RHEL ✅ Directory Services Active Directory | OpenLDAP ✅ DNS and DHCP Windows Server DNS | DHCP | Linux DNS | DHCP ✅ Virtualization Microsoft Hyper-V | VMware ESXi | vCenter | Proxmox VE ✅ File Servers IIS FTP | proftpd | FileZilla | FTP Server | Samba ✅ Web Servers Apache | NGINX | Microsoft IIS ✅ Scripting and Automation PowerShell scripting | Bash scripting ✅ Containers Docker | Windows Subsystem for Linux (WSL) ✅ Backup Systems Veeam Backup | Iperius Backup | UrBackup ✅ Mail Servers Mailcow | Microsoft Exchange (2000–2019) | MailWizz | Postfix | EXIM ✅ Database Servers MySQL | PostgreSQL | MariaDB ✅ Firewalls and Security MikroTik | PFSense | Cisco Firewalls ✅ Networking Skills Cisco Routing and Switching | VLANS | OSPF | VoIP and IP Telephony | Network Penetration Testing Access Control Lists (ACLs) Security (MITM Attack Mitigation) ✅ Recovery Services Password recovery for accounts and routers | Disaster recovery planning ✅ VOIP Service Freepbx | freeswitch | CME | IP TELEPHONY | 3CX SYSTEMS ✅ Cloud Service AWS, DigitalOcean, Hetzner, Azure, Google Cloud Platform, IBM Cloud, Oracle Cloud, Alibaba Cloud, Contabo, Seva 收起 -
雇用 touhidecevw
✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete...✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete solutions for designing, configuring, automating, and managing network and system projects. My proficiency in using simulation software such as Packet Tracer and GNS3, as well as real-life network and system devices, make me a valuable asset for any project. My few hands-on experiences is : ✅Network Design by MS Visio, Cisco packet tracer, GNS3, and EVE-NG ✅Netacad CCNA and CCNP packet tracer Labs activities, projects design and solution ✅Cisco routers, switches, FTD, FMC, and ASA firewalls. ✅WatchGuard, Palo Alto, CheckPoint Firewall, SonicWall, Fortigate, pfSense, OPNsense, Huawei firewalls. ✅Unifi Enterprise Fortress Gateway, Ubiquiti UDM Pro, Unifi Cloudkey, USG UniFi Firewall , Security Gateway, Switch, and AP devices ✅ Netgear, Huawei, Aruba switch, DrayTek router, TP-Link and others vendor wireless router configurations. ✅Cisco, Tp-Link, Aruba, Fortinet, Ubiquiti, Planet, Huwei switch configurations. ✅MikroTik Routers and switch configuration ✅ SNMP monitoring configuration: Observium, Librenms, Cacti, Nagios core ✅ Cloud Administrator: Azure, AMAZON AWS , Google GCP, OVH Cloud and Digital Ocean, Contabo ✅Hyper-V, VMware ESXi, VMware Workstation, VirtualBox, KVM, and Proxmox. ✅Ubuntu, Red Hat, CentOS, Debian, openSUSE, and Kali Linux distributions. ✅Windows server administration , Active Directory management, Exchange Server administration, DNS configuration ✅Servers: HP Proliant Servers, Dell/EMC Servers, IBM ✅VLSM/subnetting of small to large enterprises ✅VLANs, Inter-VLAN routing, VTP, CDP, Ether-Channel(LACP, PAGP) ✅DHCP, NAT/PAT configuration and IP helper address ✅static and Dynamic Routing protocols (RIP, OSPF, EIGRP, BGP) configuration ✅Layer-3 Redudent/backup links Using HSRP, VRRP ✅Port security, ACL( access list) configuration ✅Network troubleshooting and optimization ✅VPN Configuration Expert (GRE , SSL, IPSEC, PPTP, OpenVPN & DMVPN) ✅Network automation script for any Cisco and FortiGate devices using python ✅Overlay Networks VPN Expertise: Proficient in configuring and managing various overlay network VPNs, including ZeroTier, Tailscale, WireGuard, SoftEther VPN, Netbird , Netmaker, OpenVPN Cloud, I, Twingate and PeerVPN for secure, scalable, and decentralized networking, enabling seamless remote access, team collaboration, and encrypted communications across distributed systems. ✅Cisco Duo: MFA, 2FA, SSO, Identity Security Integration, Windows Logon, RDP, Microsoft AD, VPN Authentication. 收起 -
雇用 AliAsif4856
Fixing slow, hacked, and broken WordPress websites with precision and guaranteed results. Are you dealing with a slow, hacked, or unstable WordPress website? I can fix it — quickly, professionally, and with long-lasting results. I’m a senior WordPress technical specialist with 7+ years of experience working on...Fixing slow, hacked, and broken WordPress websites with precision and guaranteed results. Are you dealing with a slow, hacked, or unstable WordPress website? I can fix it — quickly, professionally, and with long-lasting results. I’m a senior WordPress technical specialist with 7+ years of experience working on high-performance, secure, and fully optimized WordPress websites. I’ve successfully repaired, optimized, and secured 650+ WordPress and WooCommerce websites, helping businesses improve speed, stability, SEO, conversions, and overall performance. I turn WordPress problems into clean, fast, secure, and stable websites — every single time. 🔧 What I Do ⚡ Performance & Speed Optimization Load times under 2 seconds 90+ PageSpeed Insights & A+ GTmetrix performance Full optimization of CSS, JS, images, caching, and databases Core Web Vitals improvements for better SEO & user experience 🛡️ WordPress Security & Hack Cleanup Complete malware removal & blacklist fixes Japanese keyword hack, spam redirects, and injected script removal Security hardening, firewalls & long-term protection 🐞 Error Fixing & Technical Troubleshooting White screen of death, 5xx/4xx errors, broken layouts Plugin conflicts, PHP issues, and database problems WooCommerce checkout, cart, and payment failures 🎨 Custom WordPress Design & Development Modern, responsive, mobile-first designs Custom themes, templates, and advanced functionality High-conversion landing pages (Elementor, Divi, Gutenberg, WPBakery) 🛒 WooCommerce Repair & Optimization Fix product variations, errors & theme incompatibilities Checkout optimization & payment gateway fixes Speed improvements for large stores 🔄 Migration, Setup & Configuration Hosting/domain migration with zero downtime SSL setup, CDN configuration & caching setup Fresh WordPress installations and full setup 🔁 Ongoing Support & Maintenance 24/7 availability for emergencies Weekly updates, monitoring, and backup automation Long-term technical support plans 🧩 Why Clients Trust Me ✔ 6+ years of proven WordPress expertise ✔ 640+ successful fixes, optimizations & cleanups ✔ Clear communication & quick delivery ✔ Transparent workflow with before/after reports ✔ Satisfaction guarantee — I stand behind my work I don’t just “fix problems.” I deliver stable, secure, high-performing WordPress systems that support your business long-term. 📩 Let’s Make Your Website Problem-Free Whether you need speed, security, fixes, optimization, or a complete redesign — I’m here to help. Send me a message now and get your WordPress site running perfectly. 收起 -
雇用 rupa37
I bring over 15 years of extensive experience in the fields of system administration and DevOps, making me a seasoned professional in managing and optimizing IT infrastructures. With a strong foundation in virtualization technologies, I excel in creating efficient and scalable virtualized environments. My expertise...I bring over 15 years of extensive experience in the fields of system administration and DevOps, making me a seasoned professional in managing and optimizing IT infrastructures. With a strong foundation in virtualization technologies, I excel in creating efficient and scalable virtualized environments. My expertise extends to a wide range of Linux systems, and I am well-versed in handling various distributions, ensuring their stability, security, and performance. I have a proven track record of successfully deploying web applications, guaranteeing smooth and reliable online experiences for users. One of my core strengths lies in managing system updates and applying security patches promptly, reducing vulnerabilities and minimizing downtime. My commitment to network security is unwavering, and I implement robust measures to protect data and maintain the integrity of systems. Furthermore, my proficiency in Cisco networking solutions allows me to design, configure, and troubleshoot complex network infrastructures, ensuring seamless connectivity and optimal performance. Additionally, I have a solid understanding of <b> HPE (Hewlett Packard Enterprise) </b>equipment, enabling me to efficiently manage and maintain these devices to meet organizational needs. With my extensive knowledge, practical experience, and dedication to staying updated with the latest industry trends, I am well-equipped to contribute significantly to any organization's IT operations, ensuring they run smoothly, securely, and efficiently. 收起 -
雇用 offensiumvault
Offensium Vault Private Limited is an ISO/IEC 27001:2022 and ISO 9001:2015 certified cybersecurity company delivering advanced offensive and defensive security services. Our certifications validate our commitment to world-class information security and consistent service quality, making us a trusted partner for...Offensium Vault Private Limited is an ISO/IEC 27001:2022 and ISO 9001:2015 certified cybersecurity company delivering advanced offensive and defensive security services. Our certifications validate our commitment to world-class information security and consistent service quality, making us a trusted partner for businesses globally. We help startups, enterprises, and international clients secure their digital assets with industry-standard methodologies, highly skilled professionals, and a complete security lifecycle approach. We offer a comprehensive suite of services: ⭐ Our Core Cybersecurity Services ✅ Vulnerability Assessment & Penetration Testing (Web, API, Mobile – Android/iOS, Network) ✅ Red Team Operations (Adversary Simulation & Breach Testing) ✅ Blue Team Services (Defensive Monitoring & Threat Mitigation) ✅ Source Code Review & Application Security ✅ Cloud Security & Configuration Review ✅ Infrastructure Security & Hardening ✅ Container & DevOps Security Solutions ✅ Security Automation & Threat Detection ✅ Web Application Firewall (WAF) Configuration – Cloudflare & Others ✅ Continuous Vulnerability Management ✅ Incident Response & Digital Forensics ✅ Security Audits & Ongoing Consultancy ✅ Security Training & Awareness Programs ✅ Compliance Support (ISO, PCI-DSS, SOC 2, GDPR, etc.) ✅ Bug Bounty Program Management ⭐ Why Clients Choose Offensium Vault ✅ ISO 27001:2022 Certified – Highest global standard for information security ✅ ISO 9001:2015 Certified – Assured service quality & delivery excellence ✅ 100% on-time & on-budget delivery record ✅ Clear, professional reporting with actionable fixes ✅ Transparent communication and 24/7 availability ✅ Expertise across fintech, healthcare, SaaS, eCommerce & government sectors ✅ Trusted by global clients for high-risk, high-impact projects ⭐ Professional Guarantee We deliver security work with full confidentiality, structured methodologies (OWASP, NIST, OSSTMM), and verifiable certification-backed processes. Every engagement includes: ✅ Detailed VAPT report ✅ Risk ratings & CVSS scoring ✅ Mitigation guidance ✅ Retesting & verification ✅ Optional security certificate of testing completion Our client-focused approach ensures tailored solutions, actionable insights, and 24/7 support for your peace of mind. Whether you're a startup or an established enterprise, Offensium Vault is committed to safeguarding your operations, data, and reputation. Choose us for reliable, transparent, and cutting-edge cybersecurity services. Contact us today to fortify your digital defenses. 收起 -
雇用 udayarpandey2022
Let's keep this short. Anything related to IT: (System/Network/DevOps/Virtualization/Wordpress/Development/Servers/Mail) I can handle them all, period. Ganesh D.Let's keep this short. Anything related to IT: (System/Network/DevOps/Virtualization/Wordpress/Development/Servers/Mail) I can handle them all, period. Ganesh D. 收起 -
雇用 dwinurhadi
I have been working with network devices and system admin for the past few years and have great experience with them. I am ready to be hired and start working on your projects today. ~regards | Cisco Expert Routing Switching | | VMware Expert | Juniper Router | HCNA Huawei | | Fortinet NSE1 NSE2 NSE3 | | PFSense...I have been working with network devices and system admin for the past few years and have great experience with them. I am ready to be hired and start working on your projects today. ~regards | Cisco Expert Routing Switching | | VMware Expert | Juniper Router | HCNA Huawei | | Fortinet NSE1 NSE2 NSE3 | | PFSense Advanced | FreeBSD Advanced | Mikrotik MTCNA MTCWE | Palo Alto Expert | | Docker | Docker Compose | Nomad | Kubernetes | Ansible Expert | Terraform | Scripting Automation | WebServer Nginx and Apache Expert | | MySQL Tune High Performance | Indexing | Tune Up | | Github Action | Gitlab Pipelines Expert 收起 -
雇用 arfharwinder
⚡ Preferred Freelancer | ⚡ 14+ Years Experience in Web Security and WordPress Hello! I am Harwinder Kumar, a seasoned professional specializing in comprehensive Web Security and WordPress. I offer services in Malware Removal, Virus Removal, Ethical Hacking, Internet Security, WordPress Speed Optimization, Websites...⚡ Preferred Freelancer | ⚡ 14+ Years Experience in Web Security and WordPress Hello! I am Harwinder Kumar, a seasoned professional specializing in comprehensive Web Security and WordPress. I offer services in Malware Removal, Virus Removal, Ethical Hacking, Internet Security, WordPress Speed Optimization, Websites Transfer, SSL Installation, WordPress Development, Linux Server Administration and Zen Cart / Drupal / MODX / Moodle / Joomla CMS Upgrades. Achievements: ✅ Cleaned 5000+ websites successfully from malware with security enhancement. ✅ Conducted 1,000+ seamless website transfers. ✅ Completed more than 500 SSL installations. ✅ Optimized speed of 200+ WordPress websites. Services Offered: 1. Malware and Virus Removal (Cleaning Hacked Websites and Servers): ✔ Guaranteed 100% cleanup of websites, including databases from malicious code. ✔ Remediation of WP-VCD malware, backdoors, malicious javascript and conditional redirects. ✔ Specialized solutions for japanese keyword hack, SEO spam / pharma hack, credit card stealers and ecommerce malware. ✔ Google blacklist removal (This site may be hacked, The site ahead contains malware), google deceptive warning fix. ✔ McAfee SiteAdvisor, norton blacklist or any VirusTotal based blacklist fix. 2. Website Security Maintenance: Strategic security enhancements and guidance for future-proofing your digital assets. 3. Website Transfer and Migration: Expert transfer of websites to new hosts or domains for any PHP-based CMS or custom-coded websites. 4. SSL Installation and HTTPS Migration: Seamless migration from HTTP to HTTPS with secure padlock implementation. 5. WordPress Development and Troubleshooting: Comprehensive development and issue resolution, including critical and fatal error fixes. 6. HTTP Security Headers Fix: Implementation of essential security headers to protect your web application from common vulnerabilities and threats. 7. Linux Server Administration: Efficient server management promoting optimal performance and security. 8. WordPress Speed Optimization: Proven methods to enhance website performance following Google PageSpeed and GTmetrix standards. 9. Platform Upgrades: Upgrading Zen Cart, Drupal, MODX, Moodle and Joomla to their latest stable versions. 10. Penetration Testing: Thorough security vulnerability assessments to safeguard your web presence. If you're looking for a trusted partner to secure, optimize and enhance your digital operations, I am here to deliver superior solutions tailored to your needs. Let's collaborate to ensure your website is both secure and performing at its peak! 收起 -
雇用 raphaelokekeze
I’m a web designer and developer with over 15 years of experience building, fixing, and improving websites across many industries. Over the years, I’ve worked on everything from simple landing pages to complex, custom-built platforms, which gives me the flexibility to handle a wide range of projects without...I’m a web designer and developer with over 15 years of experience building, fixing, and improving websites across many industries. Over the years, I’ve worked on everything from simple landing pages to complex, custom-built platforms, which gives me the flexibility to handle a wide range of projects without guesswork. I work extensively with WordPress and Elementor, and I’m comfortable across platforms like Shopify, Webflow, Wix, and other CMS tools. My core stack includes HTML, CSS, PHP, JavaScript, and jQuery, so I can go beyond templates and deliver custom solutions when needed. On the design side, I use Photoshop and modern UI practices to create clean, practical designs that are built to perform. A big part of my work involves troubleshooting and repair. If a website is broken, slow, or behaving unpredictably, I can step in, identify the root cause, and fix it properly. I also handle website security, including malware and virus removal, cleaning hacked sites, and resolving issues with websites flagged by browsers or search engines. Speed and performance matter, so I regularly optimize websites that load slowly. This includes improving load times, reducing unnecessary scripts, optimizing assets, and making sure the site runs smoothly across devices. I also focus on onsite SEO, structuring websites so they are search-friendly from the ground up. This includes proper HTML structure, meta data setup, page speed improvements, schema implementation, and ensuring best practices that help improve visibility in search engines. I also handle website migrations between different platforms and hosting environments, including cPanel and Linux VPS servers, making sure everything transfers correctly with little to no downtime. On the marketing side, I build landing pages and automation systems using tools like GoHighLevel, Unbounce, Mailchimp, Klaviyo, and similar platforms. This helps turn traffic into leads and keeps systems running efficiently in the background. With a strong technical foundation and years of hands-on experience, I can take on both straightforward tasks and more complex challenges. Whether you need a site built, fixed, secured, optimized for search, or improved overall, I can step in and get it done. If you need someone who can handle the full scope of web work without constant back and forth, feel free to reach out. Let’s get your project moving. 收起
