System Administrators Para Contratação
Países
Localização específica
Exames
Remuneração por Hora (Dólares)
Avaliação
On-line
Mostrando 52 resultados
Freelancers Patrocinados
-
Are you searching for a dynamic and skilled IT professional to elevate your business? Look no further! I am an experienced freelancer offering a wide range of services to boost your online presence and drive success. With a passion for quality assurance software testing, I ensure flawless software performance. As a...Are you searching for a dynamic and skilled IT professional to elevate your business? Look no further! I am an experienced freelancer offering a wide range of services to boost your online presence and drive success. With a passion for quality assurance software testing, I ensure flawless software performance. As a Cisco Certified Network Associate (CCNA), I excel in network engineering, optimizing network infrastructures with precision. For seamless system administration, I manage servers and maintain optimal performance in Linux and Windows environments. TestRail expertise streamlines testing processes, enhancing efficiency. I bring creativity and technical prowess to web design and development, crafting engaging user experiences and visually stunning designs. From ecommerce platforms to personal portfolios, I bring your vision to life. As a multilingual translator (Urdu to English), I bridge linguistic barriers and expand your reach. I also offer expert teaching in English, computer science, and IT subjects. From data entry to database administration (MySQL and Microsoft SQL), finance, and business administration, my meticulous attention to detail and organizational skills drive operational efficiency. As a Microsoft Certified Specialist in PowerPoint, Excel, and Word, I create impactful presentations, automate spreadsheets, and produce professional documents. Proficient in Microsoft Azure and AWS, I deploy, manage, and optimize secure and scalable cloud environments for your business needs. For hassle-free web hosting and domain registration, I specialize in cPanel/WHM, WHMCS, WordPress, and Joomla configuration and installation. I am a versatile IT professional with expertise in quality assurance software testing, network engineering, system administration, web design and development, translation services, and more. Let's collaborate and drive tangible business growth together! menos
Contratar wallymna
-
engkarimismail engkarimismail
$50 Dólares / hora
✅ Senior Network & System Engineer | Security|VOIPMalaysia✅ 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 menos
Contratar engkarimismail
-
iosifpeterfi iosifpeterfi
$64 Dólares / hora
Systems Architect, Software Engineer, DeveloperGermanySenior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are...Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are effortless. Strengths: Infrastructure architecture & operations (Linux/Windows, virtualization, networking) Security hardening, identity & access, monitoring/observability Automation & DevOps practices (CI/CD, config management, IaC) Migrations and upgrades with minimal downtime Concise runbooks, risk-aware planning, and stakeholder-friendly communication Certifications: CompTIA Security+, Microsoft MCSE/MCSA/MCITP Languages: English (C2), German (C1), native Romanian Location: Germany • NDA-friendly • Reliable and responsive menos
Contratar iosifpeterfi
-
We are a Canadian-Ukrainian team of highly professional IT specialists (software developers, designers, system administrators and Internet marketers) with more than 20 years expertise. OUR MAIN SPECIALIZATIONS: 1) WEB DEVELOPMENT & SOFTWARE DEVELOPMENT 1.1) FRONT-END: HTML, HTML5, CSS3, Bootstrap, TailwindCSS ...We are a Canadian-Ukrainian team of highly professional IT specialists (software developers, designers, system administrators and Internet marketers) with more than 20 years expertise. OUR MAIN SPECIALIZATIONS: 1) WEB DEVELOPMENT & SOFTWARE DEVELOPMENT 1.1) FRONT-END: HTML, HTML5, CSS3, Bootstrap, TailwindCSS 1.2) JAVASCRIPT: JavaScript, ES6+, Typescript, Node.js, MEAN, MERN, MEVN, Angular, React.js, Vue.js, Nuxt.js, Next.js, Gatsby.js, jQuery 1.3) BACK-END 1.3.1) LAMP (Linux, Apache, MySQL, PHP) including Symfony, Laravel, Yii, Zend, CodeIgniter, CakePHP 1.3.2) Python (Python, Django, Flask, FastAPI) 1.3.3) .NET stack technologies (C#, ASP.NET, .NET Core) 1.4) OPEN SOURCE SOLUTIONS 1.4.1) E-commerce Platforms: Shopify, Magento, WooCommerce, Prestashop, OpenCart, BigCommerce, Shopware, osCommerce 1.4.2) CMS: WordPress, Drupal, Joomla, TYPO3 etc. 1.4.3) CRM: SuiteCRM, SugarCRM 2) MOBILE DEVELOPMENT 2.1) Android native development: Java, Kotlin 2.2) iOS native development: Swift, Objective-C 2.3) Cross platform development: Flutter, React Native, Ionic 3) DESIGN 3.1) Website Design (UI (User Interface), UX (User Experience) etc.) 3.2) Graphic Design (Creative Design, Digital Design, Advertisement Design etc.) 3.3) Corporate Identity (Brand Boooks, Business Cards, Logos, LetterHeads etc.) 4) INTERNET MARKETING 4.1) Social Media Marketing (Linkedin, Xing, Facebook, YouTube, Instagram etc.) 4.2) SEO (SEO Copywriting, SEO Auditing, White Hat SEO) 4.3) PPC Marketing (Google Adwords, Google Ads, Facebook Ads, YouTube Ads, Instagram Ads etc.) 4.4) Email Marketing 5) MANAGED SERVICES 5.1) 24/7 TECHNICAL SUPPORT 5.2) SYSTEM ADMINISTRATION SERVICES Our team of high qualified System Administrators have huge experience with technologies covering: - different distributions of OS Linux, Unix and MS Windows Server systems; - different types of virtualization (ProxMox, Virtuozzo, OpenVZ, KVM, XEN, VMware, Hyper-V); - VPN/DNS/IPTables/Firewalls/web servers/mail servers configuration and tuning etc.; - cloud solutions (AWS, MS Azure, Google Cloud, Alibaba Cloud, OVHcloud, DigitalOcean, Linode etc.). 6) HOSTING SERVICES provided by our hosting subdivision under trade mark "TanHost" 6.1) Cloud based solutions (e.g. configuration and technical support of Private Clouds); 6.2) Сollocation services, the providing for rent dedicated and VPS/VDS (virtual servers); 6.3) Shared Hosting; 6.4) Domain names registration services; 6.5) SSL Certificates. 7) EMBEDDED SYSTEMS 7.1) Embedded software development 7.2) Internet of Things (IoT) 7.3) Microcontrollers programming 7.4) Arduino microcontrollers programming OUR CREDO: Reputation – is above anything else! We help our customers to grow success and we grow together with our customers! We are flexible to meet our clients' needs. We make it simple... menos
Contratar tangramua
-
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. menos
Contratar rupa37
-
I’m Ayesha Tanveer, a software engineer specializing in enterprise-grade AI systems, automation, and scalable web & mobile platforms. I work directly with organizations to design, build, and optimize robust digital solutions that align with business strategy, security standards, and long-term growth. My work...I’m Ayesha Tanveer, a software engineer specializing in enterprise-grade AI systems, automation, and scalable web & mobile platforms. I work directly with organizations to design, build, and optimize robust digital solutions that align with business strategy, security standards, and long-term growth. My work emphasizes reliability, automation, and scalability, helping teams reduce operational overhead, modernize workflows, and deploy production-ready systems with confidence. Core Capabilities ✨ AI & Intelligent Automation ✅ Enterprise AI Chatbots & Virtual Assistants ✅ Workflow Automation & Process Optimization ✅ Machine Learning & Data-Driven Systems ✅ Intelligent Data Extraction & Processing Pipelines ✨ Web & Software Engineering ✅ Full-Stack Development (MERN, MEAN, Next.js, NestJS) ✅ Django & Laravel Enterprise Applications ✅ Progressive Web Apps (PWAs) ✅ Custom WordPress & Shopify Extensions ✅ Headless CMS & JAMstack Architectures ✨ Mobile & Platform Development ✅ Flutter & React Native Applications ✅ Secure API Integrations & Scalable System Design ✨ UX Engineering & Product Design ✅ UX/UI Design using Figma & Adobe XD ✅ User-Centered, Accessibility-Aware Interfaces ✨ Cloud & Infrastructure ✅ AWS, Google Cloud & Azure ✅ Serverless Architectures, CI/CD & Deployment Automation Why Enterprises Work With Me ✅ Enterprise Mindset: Security, performance, and scalability built-in ✅ Automation-Driven Delivery: Reduced manual processes & operational risk ✅ Direct Senior-Level Execution: No handoffs, clear accountability ✅ Business & Technology Alignment: Engineering decisions driven by ROI If your organization needs a trusted technical partner to automate operations, implement AI, or build scalable digital platforms, I’m available for long-term collaboration and strategic development engagements. menos
Contratar ayesha86664
-
markupdudes markupdudes
$25 Dólares / hora
AI & Full-Stack Dev | Python, Laravel, React, IoTPakistanI help businesses turn ideas into powerful, AI-driven applications that boost efficiency, engage users, and scale with ease. I’m a full-stack developer with strong expertise in Artificial Intelligence (AI), Machine Learning (ML), and Large Language Models (LLMs). I build smart, data-driven applications that integrate...I help businesses turn ideas into powerful, AI-driven applications that boost efficiency, engage users, and scale with ease. I’m a full-stack developer with strong expertise in Artificial Intelligence (AI), Machine Learning (ML), and Large Language Models (LLMs). I build smart, data-driven applications that integrate intelligent automation, natural language processing (NLP), and predictive analytics to deliver innovative, scalable solutions for businesses. On the backend, I work extensively with Python (Django, Flask, FastAPI), Node.js, and PHP frameworks including Laravel, CodeIgniter, Joomla, and Magento. On the frontend, I develop modern, high-performance web and mobile applications using ReactJS, React Native, Swift/SwiftUI for iOS, and Kotlin/Jetpack Compose for Android. I also specialize in custom WordPress development, from theme and plugin creation to full-scale, tailored CMS solutions, ensuring functionality matches your exact needs. My UI/UX toolkit covers HTML, CSS, JavaScript, jQuery, and Bootstrap, with a focus on clean, user-friendly design. Beyond application development, I have hands-on experience with Blockchain-based applications, Cloud management (AWS, Azure, Google Cloud), and DevOps workflows (CI/CD pipelines, containerization with Docker/Kubernetes, and server automation). My approach is to combine technical expertise with an understanding of business goals, delivering high-quality, scalable, and future-ready solutions that not only meet but exceed client expectations. menos
Contratar markupdudes
-
Hello! I’m Mehrab Ahmed Saurav, a Google-certified UX Specialist and seasoned developer with a proven track record in web, mobile, and software solutions. I currently serve as Senior Web Developer at SW HR Consulting LLC, and bring over a decade of hands-on experience to every project. At My Profile, I stand by a...Hello! I’m Mehrab Ahmed Saurav, a Google-certified UX Specialist and seasoned developer with a proven track record in web, mobile, and software solutions. I currently serve as Senior Web Developer at SW HR Consulting LLC, and bring over a decade of hands-on experience to every project. At My Profile, I stand by a simple but powerful philosophy: NO ADVANCE OR UPFRONT PAYMENT. PAY ONLY WHEN YOU ARE 100% SATISFIED Why Work With Me? • No Advance Payment Required. I believe in earning your trust through results — pay only when you are completely satisfied. • 100% Satisfaction Guarantee. Your success is my success. I don’t stop until the job is done right. • On-Time Delivery. I respect your time and deadlines — projects are delivered on schedule, every time. • 24/7 Client Support. I am always just a message away — ready to assist, update, or troubleshoot around the clock. • Secure, Transparent Transactions. My Core Expertise Web & Software Development • Front-End: HTML, CSS, JavaScript, jQuery, Tailwind, Bootstrap • Back-End: PHP, MySQL, Laravel, Node.js • CMS & Platforms: WordPress, WooCommerce, Shopify • Custom Web Applications: Admin panels, dashboards, analytics platforms Blockchain, Crypto & Web3 Development • Smart Contract Development (Solidity / EVM Chains) • Token Creation (ERC-20, BEP-20, SPL for Solana) • Launchpad Integrations (Pump.fun, Raydium, Uniswap, etc.) • Web3 Wallet Integration (Metamask, Phantom, WalletConnect) • NFT Minting Sites & Marketplaces • Crypto Chart Bots, Airdrop Scripts, and Automated Trading Tools Bulk Communication Solutions • Custom Bulk Email & SMS Sender tools • Integration with APIs like Twilio, SMTP, SendGrid Digital Marketing & SEO • Full-spectrum White Hat SEO (on-page, off-page, technical) • SMM Campaigns to elevate brand presence (Facebook, IG, TikTok) Automation & Scripting • Web Scraping, Data Mining, and Bot Development using Python • Workflow automation for lead gen, reporting, and CRMs IoT & Embedded Systems • Projects using Arduino, Raspberry Pi, and Python • Smart sensors, remote automation, and edge computing solutions Mobile App Development • Platforms: Android & iOS (Native and Cross-Platform) • Frameworks: Flutter, React Native, Ionic • API Integration & UI/UX Design Budget-Friendly, High-Quality Work Warm regards, Mehrab Ahmed Saurav UX Specialist | Full Stack Developer | Blockchain Architect menos
Contratar yieoyo
-
Hello, I can start immediately and can dedicate to your project full-time, 40+ hrs/week during your working time. I've 8+ years of experiences and specialized in C#, VB, .Net, Devexpress, JavaScript, Node.js, React, Next.js, Mobx, GraphQL, Neo4j, Tailwind CSS, SCSS, GPT, TypeScript, API integration, etc. I'm an...Hello, I can start immediately and can dedicate to your project full-time, 40+ hrs/week during your working time. I've 8+ years of experiences and specialized in C#, VB, .Net, Devexpress, JavaScript, Node.js, React, Next.js, Mobx, GraphQL, Neo4j, Tailwind CSS, SCSS, GPT, TypeScript, API integration, etc. I'm an excellent English speaker/communicator with good collaboration experience. Looking forward to discussing more details. Best regards. Emile. menos
Contratar emilesd617
-
Daniel Stoychev – Web Developer & IT Specialist wopp.co.uk I’m a full-stack web developer, Linux specialist and freelancer with extensive experience across multiple platforms. BCS Computer Science at Wrexham University, United Kingdom, (Level 6). I bring both academic expertise and a professional edge to every...Daniel Stoychev – Web Developer & IT Specialist wopp.co.uk I’m a full-stack web developer, Linux specialist and freelancer with extensive experience across multiple platforms. BCS Computer Science at Wrexham University, United Kingdom, (Level 6). I bring both academic expertise and a professional edge to every project I undertake. With a proven track record of completing 300+ websites and projects, I possess a deep understanding of IT and programming. My skill set includes: Web Development & Programming: HTML, CSS, Node.js, JavaScript, PHP, Python, C, Java DevOps & System Administration: Linux (Ubuntu, Debian), Shell Scripting, Plesk, VPS & Web Hosting, Nginx, SSL/TLS, DNS configuration Databases & CMS: MySQL, PostgreSQL Building scalable and efficient systems Delivering innovative digital solutions tailored to client needs Whether you're looking for a reliable developer for your next project or need expert advice on web technologies, I am here to help. Let's bring your vision to life! menos
Contratar dstoych96
