Hire the best Unix System Administrators
Check out Unix System Administrators with the skills you need for your next job.
- $40 hourly
- 5.0/5
- (126 jobs)
I have 35+ years experience in network projects including design, implementation, system administration and in software development. For the first 5 years of my career I worked on software development: coding and especially testing. For the last 30 years I'm working on implementation and maintenance of University of Nis WAN. Last 26 years I'm deeply involved in AMRES (Academic Network of Serbia) project. Don't fix it if it ain't broken, don't break it if you can't fix it! SKILLS SUMMARY - Any system administration tasks - Operating Systems: any *nix (Linux, FreeBSD, SGI IRIX, SCO, Solaris, OSX), Windows 3.1/9x/Me/XP/Vista/W7/W8/W10/W11, WinServer NT/2K/2003/2008/2012/2016 - LAN & WAN: Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI and Wireless LANs. T1/T3, SDH/SONET, Frame Relay, WDM, ISDN, ADSL, SHDSL, Cable Modems, Cellular, X.25. - Network Protocols: TCP/IP, IPv6, UDP, OSI, CDP, IP Multicast, IPSec, VoIP, Routing, VLANs, Bridging, Trunking, VPN, SNA, DLS - Network Services & servers: SMTP/POP3/IMAP, FTP/SFTP, Telnet/SSH, HTTP/HTTPS, DNS, DHCP, NNTP, NTP, LDAP, SNMP, NETBIOS, Apache, Nginx, MySQL, Plesk, cPanel, Zimbra, VMware, CentOS, Ubuntu, Debian - Network Equipment: various types of modems, firewalls, switches and routers. - Dedicated, VPS and cloud environment servers (Amazon AWS, Google Cloud, MS Azure, Digital Ocean, Linode). - Programming Languages: Unix Shell scripting, BASH, C, Pascal, MS Visual Basic, PHP, HTML, (a bit of Python).
Unix System Administration
CentOSUbuntuSystem AdministrationApache AdministrationSSLLet's EncryptLinux System AdministrationFirewallRed Hat AdministrationInternet SecurityCloudflareZimbra AdministrationNetwork SecurityNetwork Administration - $115 hourly
- 5.0/5
- (95 jobs)
🌟 Expert-Vetted Talent - Recognized in Upwork's top 1% of Talent ✅ Established Track Record of Hours and Earnings 🚀 Fastest Response Times 💯 100% Job Success Awarded by Clients 🔝 Top Rated Plus by Upwork, Freelancer and Agency 🔎 Searching for New Opportunities and Problems to Solve Hello and welcome, thank you for considering me for your project. My Upwork profile’s stats clearly demonstrate both my expertise and the value I add to every team that brings me on. The thousands of hours clocked on this platform alone speak to my years of experience in Software Development, and the total earnings shows a glimpse of how valuable that time has been for clients. I am available and ready to answer specific questions about your project’s current problem, next opportunity, or my fit for it. Shall we get to work? Send a message or an invite now and I will be right with you. 𝐖𝐡𝐲 𝗖𝗹𝗶𝗲𝗻𝘁’𝘀 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 1. 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Decades of experience bring a deep understanding of various languages, frameworks, platforms and tools, common and uncommon pitfalls, and alternative solutions. 🗯️ “He was very responsive to our messages and explained what was needed in our project clearly. He is definitely an expert in his work.” 2. 𝗘𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗣𝗿𝗼𝗯𝗹𝗲𝗺 𝗦𝗼𝗹𝘃𝗶𝗻𝗴: I have a proven track record and knack for solving complex problems and providing customized solutions for specific business needs and challenges. 💭 “Isaac was able to quickly discern what I needed and delivered…” 3. 𝗦𝘆𝘀𝘁𝗲𝗺 𝗩𝗶𝗲𝘄 𝗮𝗻𝗱 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝗼𝗻: Years of experience and diverse projects have helped me accumulate a broad set of skills and tools. I use this experience to the advantage of my client’s projects in not only accomplishing tasks, but in advising and consulting on potential challenges and opportunities. 💬 “LIFE SAVER!!! I have now use(d) Issac for two separate jobs now and will be bringing him on for some regular hours. Hopefully we get some funding and I can do even more with him. GREAT DEVELOPER” 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Python|Django|PHP | MySQL | Laravel | WordPress | CodeIgniter | ExpressionEngine | CSS | HTML | JavaScript | Express.js | React.js | Bootstrap | PostgreSQL | NoSQL | Linux | Apache | Nginx | API | Git | SVN | Amazon Web Services | AWS EC2 | 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝗜 𝐎𝐟𝐟𝐞𝐫: 𝐅𝐫𝐨𝐧𝐭 𝐚𝐧𝐝 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Planning, Design, Documentation, Coding, Testing, Debugging, Deployment, Monitoring, and Maintenance. 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Cloud infrastructure Design, Deployment, Optimization, Maintenance, Scaling, Recovery and Backup, Troubleshooting, and Cost Management. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 Management: Architecting, Optimization, Monitoring, Recovery, Updating, and Merging. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Planning, Project Requirements, Task Detailing, Developer Support and Feedback, Problem Resolution, Progress Monitoring, Qualification Testing, and Stakeholder Communication.
Unix System Administration
JavajQueryAmazon EC2SOAPCodeIgniterIBM InformixLinux System AdministrationLaravelDatabase DesignNode.jsRESTful APIDatabase ArchitecturePostgreSQLPythonCSSWeb DevelopmentAmazon Web ServicesReactAPIPHPMySQLJavaScript - $98 hourly
- 4.5/5
- (159 jobs)
Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I have a great deal of expertise in: * real time embedded systems * cross compilation/software construction * source control * network programming * system administration * kernel level programming/device drivers * image processing * performance and metrics
Unix System Administration
Image ProcessingCApache SubversionAgile Software DevelopmentEmbedded LinuxLinux System AdministrationDriver DevelopmentFreeBSDGitAssembly LanguageTCP/IPVersion ControlObject-Oriented DesignDHCP - $50 hourly
- 4.9/5
- (328 jobs)
Certified AWS Solution architect. I am having more than 12 years of experience in Installing, configuring and administrating various type of *nix servers using various opensource and closed source software for various customer requirement in the industry. My major expert areas in summary:- #Cloud environment :- Amazon Web Services, Google Cloud, DigitalOcean #Email deliverability: PowerMTA, Interspire, MailWizz, Amazon SES #Operating Systems :- Redhat, CentOS, Ubuntu, Dabian, Gentoo, HP-UX, Aix, SunOS,. Windows workstations and Servers 2000, 2003, 2008 R2, etc., #TCP/IP networking :- Advanced ip routing, forwarding, filtering and firewall with Netfilter Iptables #servers :- Sendmail, Postfix, Dovecot, Courier IMAP, Squirrelmail, Roundcube, BIND, Apache, VSFTPD, DHCPD, Squid, Samba #Monitoring and remote admin :- Log analizing with Sarg,Monitoring serves with Nagios and icinga ,Remote desktop with FreeNX, Remote Admin SSh/Telenet #Scripting :- Bash scripting, Perl, Python #Web and Database :- postgresql, MySQL, Oracle HTML #CMS: Drupal, Magento, Wordpress Thank you. Best Regards. Fabrizio
Unix System Administration
DockerEmail DeliverabilityNetwork AdministrationDovecotLAMP AdministrationPostfix SMTP ServerLinux System AdministrationUnix ShellMail Server ImplementationApache AdministrationServer VirtualizationAmazon Web ServicesNGINX - $85 hourly
- 4.7/5
- (234 jobs)
I perform web design (PHP, Python, Ruby) and programming(Java, C++), and server administration GNU/Linux (CentOS, RedHat, Ubuntu, Debian). Software Engineer with a Full Stack emphasis. Love developing and working with great infrastructures. Ambitious applications are always keeping contempt. DevOps with a strong emphasis on Back-end web development and automation and deployment of Unix systems. I'm an experienced PHP Developer (16+ years) with Bachelor's Degree in Computer Science (Software Engineering) in Spain. Over 16 years of intensive work in the web development industry. ✔More than 9750 hours in Upwork and 190+ projects. With almost 85% Job Success. I apply my technical skills using UNIX based and like operating systems to provide the most effective, reliable and secure solutions available. Results oriented application developer focused on delivering high quality code and solutions. Built solutions using several scripting/programming languages ► PHP: OOP, MVC, Best practices, Design Patterns, Unit Testing ► PHP frameworks: Symfony, Zend, CodeIgniter, Laravel, Lumen, FuelPHP ► Python: Django, Fabric ► Webservers: Apache, Nginx, Varnish, LightHTTP ► Databases: MySQL, MariaDB, SQLite, PostgresSQL, Percona ► Version control system: Git, hg (mercurial), Bazaar, svn Also: ► Mailing: Postfix, Dovecot, Postgre, SpamAssassin, ClamAV, Mailgun, Mailchimp ► Providers: - AWS (EC2, ECS, ECR, S3, Route 53, Elastic Load Balancing (ELB), Latency Based Routing (LBR), Glacier, etc), - Digital Ocean, - Hetzner, - Linode (Lish) ► Migration, backup, page speed optimization and tuning perfomance sites (Specialized in migrations like shared-hosting to VPS/Dedicated or huge infrastructures). Reducing costs for your company is a must for me. ► CDN: CloudFlare ► SSL configuration: RapidSSL, name.com, GeoTrust, LetsEncript ► PaaS: Cloud66, EngineYard, Laravel Forge ► GTD: Basecamp, Asana, Trello, Wunderlist ► Payments: Pay_pal API, Stripe, Braintree, MangoPay, Zaxaa ► Bluehost, Hostgator, Site5 ► Security: Suhosin, ModSecurity ► Panels: cPanel (and cPanel DNS only), DirectAdmin, Plesk ► Exception tracking: bugsnag, New Relic ► Redis, Vagrant, Docker ► Templates system: Mustache, Markdown, Smarty, Twig, Haml, Jade, Dwoo, Phptal ► Databases: MySQL, MariaDB, MongoDB, Amazon RDS (Multi AZ), Cassandra ► Others: WP-Rocket, Memcache, Dropbox API I also offer SEO, 3D Design and translations through other workers in my Agency Quijost And there is much more to list of skills I gathered over the years. Just contact me for a quote. I prefer only hourly jobs instead fixed price. Please avoid sending me jobs about (it will be ignored): iOS, Windows, IIS, SQL Server
Unix System Administration
RESTful APIWordPress PluginWooCommerceRESTful ArchitectureCastilian SpanishSymfonyJavaPHPJavaScriptHTML5Backup AdministrationPythonBusiness with 10-99 EmployeesAmazon Web Services - $15 hourly
- 5.0/5
- (61 jobs)
٩(^‿^)۶ Hi, ❖ Linux ❖ Command Line, Shell Bash scripting. ❖ Web hosting with / without control panels ❖ Deploy free / paid control panels. ❖ cPanel/WHM proficiency certifications: CPANEL & WHM SALES PROFESSIONAL CERTIFICATION (CPSP) CPANEL PROFESSIONAL CERTIFICATION (CPP) CPANEL & WHM SYSTEMS ADMINISTATOR II CERTIFICATION (CWSA-2) LITESPEED CERTIFICATION JETBACKUP 4 CERTIFICATION IMUNIFY360 CERTIFICATION CPANEL & WHM SYSTEM ADMINISTRATOR I CERTIFICATION CPANEL & WHM ADMINISTRATOR CERTIFICATION (CWA) Check Certifications from cPanel Inc. university.cpanel.net/user/10077 ◎[▪‿▪]◎ ❖ Docker ❖ Container orchestration. ❖ Kubernetes I'm a Certified Kubernetes Administrator (CKA), Check proficiency certification from The Linux Foundation: credly.com/users/zakarya-tawadrous/badges ◎[▪‿▪]◎ ❖ WordPress Administration, Security, optimization, and word press migration ❖ DNS, and zone records configurations for web applications, and mail systems. ❖ Mail servers management ❖ Database server management. ❖ I will be available whenever work calls. ❖ And I will always go beyond the extra mile to ensure that projects and well done completed with 100% positive feedback. ❖ you can find me __̴ı̴̴̡̡̡ ̡͌l̡̡̡ ̡͌l̡*̡̡ ̴̡ı̴̴̡ ̡̡͡|̲̲̲͡͡͡ ̲▫̲͡ ̲̲̲͡͡π̲̲͡͡ ̲̲͡▫̲̲͡͡ ̲|̡̡̡ ̡ ̴̡ı̴̡̡ ̡͌l̡̡̡̡.___ or on Telegram @zakrasmi ( ╥﹏╥) ノシ Bye 👋 . 🅻🅸🅽🆄🆇 🅳🅾🅲🅺🅴🆁 🅲🅾🅽🆃🅰🅸🅽🅴🆁 🅺🆄🅱🅴🆁🅽🅴🆃🅴🆂 🆆🅷🅼 / 🅲🅿🅰🅽🅴🅻 ⛪ ❈ ☥ ⛯ ♘ 🌻🐝 ☮ ☯ ⛵ ⛴ ⛱ ♾ ⚛ 🔋 ⛑ 🔧 🔨 🔭 🐋 🐫
Unix System Administration
Web HostingWeb Host ManagerApache HTTP ServerDocker Swarm ModeKubernetesDocker ComposeDockerNetwork AdministrationWordPressDNSLAMP AdministrationcPanelLinux System AdministrationNGINX - $50 hourly
- 4.5/5
- (134 jobs)
I am an advocate of clean coding, my favorite philosophy is Boy Scout rule "Always leave the Code cleaner than you found it". During free time, I like to spend time contributing to opensource, I already contributed to opensource projects like FlowiseAi, Jhipster Generator, Mongock and Bitnami Redis. I like to deep dive into computer science concepts. I am not the type of programmer who is contented to just copy-paste code from the internet. I prefer to analyze code to understand why it works the way it does. I believe in the saying, "Low-level programming is good for the programmer's soul". Skills and Technologies: • Languages: Proficient in Java, Node.js, Angular, Groovy, and Kotlin. Always updated with the latest trends and best practices. • Clean Architecture: A strong advocate of clean and efficient design, ensuring each project's robustness and scalability. • Front-End Development: Expertise in Angular, Vue.js, Nuxt, HTMX, Tailwind, Bootstrap, crafting responsive and intuitive user interfaces. • Back-End Development: Skilled in Java, Node.js, Kotlin and Groovy to develop server-side applications that are as resilient as they are expandable. • Cloud Computing: A solid track record with Amazon Web Services (AWS), designing and implementing scalable cloud solutions.
Unix System Administration
Generative AILangChainSpring BootVue.jsJHipsterAWS Server MigrationDockerSpring FrameworkNode.jsTypeScriptAngularAmazon Web ServicesJavaMongoDBKotlin - $75 hourly
- 4.8/5
- (35 jobs)
I was trained classically, writing C and C++ code for Wall Street trading powerhouses like Goldman Sachs and Lehman Brothers. Running on advanced Unix systems, these lightning fast applications pioneered the field of today’s realtime global Fintech. As the Internet spawned open source platforms like Linux, MySQL, NodeJS, and AWS Cloud API’s, my skillset evolved into a full stack portfolio, where I built powerful back-end server software and the front-end web portals to deliver large, complex datasets via intuitive web portals. The maturing of JavaScript as the main language of the web, both on the front and back ends, has validated my decision to adopt NodeJS as my main coding platform in 2011. Today, JavaScript forms the glue of most of my applications, running on Node on the server, and in the browser up front. After moving to the West Coast in 2016, and spending time in Silicon Valley, I ventured away from financial systems to innovative applications like Blockchain Protocol coding and Video Streaming/Ffmpeg. I also coded network traffic optimization software down to the fundamental layers of the TCP/IP stack. All these big data applications naturally led me into the design and coding of custom algorithms. Whether compressing/chunking a video stream to play on a low powered mobile device, parsing network packets for suspicious traffic, or generating large NACHA files, the ability to code an algorithm in plain C can make the difference between a successful production deployment, and non-performant code that never leaves the github repo. From my early career, I have made Database structure the centerpiece of my application design. Again, classical training in Dr. E. F. Codd’s model of Relational Databases has always informed my philosophy of how to structure an application’s data repository. With web-scale data, this field has grown to NoSQL and Graph databases. Now, huge datasets underpin the training of AI/ML models. I have kept my skills updated on these data technologies, and I combine the relevant elements of each to define the most appropriate data repository for my software.
Unix System Administration
DatabaseMultithreaded ProgrammingBlockchainAPI DevelopmentPythonWeb DevelopmentAPI IntegrationNode.jsJavaScriptCC++ - $60 hourly
- 4.9/5
- (349 jobs)
Skilled System Administrator and Network Engineer with over 20 years of hands-on experience, adept at organizing networks for single-office environments or multiple offices connected via VPN. I am highly proficient in Unix system administration (Linux and FreeBSD), covering DNS, DHCP, LAMP/LEMP, FTP, SMTP, SNMP, ACLs, firewalls, and NAT, BGP. My expertise also extends to major cloud platforms (AWS, Vultr, DigitalOcean) and virtualization technologies (vSphere, Hyper-V, Proxmox), as well as monitoring tools (Zabbix) and VoIP/IP telephony systems (Asterisk, FreePBX). Here is what past clients have said about my work: - “Pavel was fantastic! My project hit a snag and I needed an FTP server configured quickly. He jumped in immediately, resolved the issue in no time, and answered all my questions in a friendly manner. This guy is a real problem solver!” - “Very smart when it comes to Linux systems—was able to help with our issue.” - “A very skilled and professional expert who solved all additional and unexpected problems with patience. He overdelivered, and I highly recommend working with him!” - “The problem was solved quickly and efficiently.” - “Pavel did a great job tracing the problem and solving it.” - “Pleasure to work with.” I take pride in my ability to quickly diagnose issues, implement reliable solutions, and consistently exceed client expectations.
Unix System Administration
AsteriskDNSsecWordPressLinux System AdministrationFirewallApache AdministrationMySQLLAN AdministrationSession Initiation ProtocolSquidWeb HostingNetwork EngineeringVMware vSphereNGINX - $200 hourly
- 5.0/5
- (24 jobs)
Howdy, I'm Robert and I hope you're having a great day! I'm a Linux Sys Admin and Devops/Automation engineer with 9+ years in the industry. I'm also Top Rated Plus on Upwork! Problems with scaling that application? Downtime keeping you up at night? Not sure how AWS can have so many different products? I'm the guy who can help! Technologies Ive worked with include Amazon AWS (EC2, S3, RDS, etc), Ansible, Terraform, and many others related to web hosting such as Nginx and MySQL/MariaDB. Lets schedule an initial consultation and talk about how I can help improve the scalability, reliability, and cost efficiency of your IT infrastructure. Hope to work with you soon!
Unix System Administration
AWS Systems ManagerLinux System AdministrationAmazon EC2ZabbixBash ProgrammingApache AdministrationAutomationDevOpsSolution Architecture ConsultationCentOSTerraformAnsible - $30 hourly
- 4.6/5
- (7 jobs)
Hi, I'm a highly skilled and versatile software engineer with expertise in Python, C++, C#, and reverse engineering. With 10 years of experience in developing efficient, high-quality code, and analyzing software behavior through reverse engineering, I offer a unique blend of skills to solve complex technical challenges. Services Offered: 1. Python Development Full-stack development using Python (Flask, Django, etc.) Script automation, web scraping, and data processing. API integration and data manipulation. Writing Python-based tools for reverse engineering. 2. C++/C# Development Software development with C++ for high-performance applications. System programming, game development, and embedded systems. Optimization of existing C++ code for better performance. Development of desktop applications and games using C#. Software solutions for Windows platforms (WinForms, WPF, .NET). Integration with databases and external APIs. 3. Reverse Engineering & Malware Analysis Software Debugging: Understanding and modifying software behavior through techniques like disassembling, decompiling, and debugging. Malware Analysis: Deconstructing malicious code to understand its behavior, identify vulnerabilities, and suggest countermeasures. Cryptography & Protection Removal: Bypassing obfuscation techniques and software protections such as DRM, license verifications, and anti-tampering mechanisms. Security Audits & Penetration Testing: Analyzing software for security flaws and performing penetration testing to ensure vulnerability prevention. Technical Skills: Programming Languages: Python, C++, C#, JavaScript, Bash, go Frameworks & Libraries: Flask, Django, mern stack, FastApi, Qt, .NET Framework, Boost, PyQt Reverse Engineering Tools: IDA Pro, Ghidra, OllyDbg, WinDbg, x64dbg Operating Systems: Linux, Windows Security Tools: Burp Suite, Wireshark, Metasploit, Maltego Let’s Work Together! If you are looking for a reliable and knowledgeable developer who can handle challenging problems in Python, C++, C#, and reverse engineering, I am here to help you succeed.
Unix System Administration
Assembly LanguageNode.jsReactLinuxExpressJSComputer NetworkELK StackStripeCLaravelMongoDBMySQLPythonPHPC++ - $45 hourly
- 5.0/5
- (58 jobs)
Top Rated with 100% job success score. Results-driven Enterprise Systems Administrator: committed to quality work and backed by 40+ client reviews highlighting work ethic, efficiency and good communication. Experienced in: - Operating systems: Windows Server, Ubuntu Server, RHEL - Red Hat Enterprise Linux / CentOS; - Cloud platforms: AWS, Azure; - Virtualization: Hyper-V, VMware, Docker; - Active Directory, DNS, DHCP, GPO (Group Policy), WSUS (Update Service), file servers; - Nginx, HAProxy, SSL certificates, Elastic/ELK; - Security: SSL Certificate Authority, firewall, proxy, hardening, monitoring solutions;
Unix System Administration
DockerWindows AdministrationInformation SecurityElasticsearchHAProxySSLLinux System AdministrationLinuxMicrosoft Active DirectorySystem AdministrationWindows ServerAmazon Web ServicesNGINXMicrosoft Windows - $40 hourly
- 4.9/5
- (171 jobs)
Hello, I am Chandan Singh, a Self-propelled, Dedicated and Punctual Programmer. I am a Computer Science Engineer with the zeal of making each assignment successful. I have mastery in Data Structures, Algorithm Designing, DBMS, Object Oriented Programming Paradigm, Desktop Application and Web Development. I have 10 years of experience in Software development field. In this duration I build many Desktop applications, Web applications from scratch, Modified existing application, Bug-fixed many of the applications, Managed hosting and server configurations etc. I keep improving myself and keep adding newer skill into my skill-set still always ready to learn new skills. My skills are :- Python Flask, Django, FastAPI Java, Springboot C, C++ PHP, Laravel, Codeigniter, Yii, CakePHP ASP.NET, C# Wordpress, Joomla, Drupal Mysql, MSSql, PostgreSQL, MongoDB, Redis NodeJs, React, Express HTML, CSS, Bootstrap, jQuery, Javascript VBA, Excel Macros Selenium I have huge experience in developing Web Scrappers using Python and Java with Selenium and Puppeteer, E-Commerce applications using Laravel, Codeigniter, Woocommerce and Django, Desktop Applications using Python and DotNet, Zapier custom application with Nodejs, Third party API integration using PhP, Python, Node’s and Java, Competitive and University problem solving using Python with Greedy methods, Dynamic Programming and Algorithm designing. From last 2 years I am working on AI and Machine Learning projects with Python so I am looking forward to work more in AI and ML in near future. I am also trying implement ML with IOT using Arduino and Embedded Systems. One more thing, I am a good teacher too. I teach Computer Science and Mathematics. My goal is to benefit the world more and more by my skillset and capabilities. I try my best to find solutions to each and every problem come to me from my client and I stop when they are satisfied. Being a full time freelancer, I am very clear in my terms and availability so that no-one’s time get wasted. Please, Do let me know your requirement and I will make it happen for sure. Thanks
Unix System Administration
Data ScienceAI App DevelopmentGolangjQueryWordPressCodeIgniterLaravelNode.jsC++JavaFlaskDjangoJavaScriptPHPPython - $125 hourly
- 4.9/5
- (387 jobs)
First thing off: I DON'T USE SKYPE (and other proprietary closed protocols and technologies: teamviewer etc.), but I have mail, jabber and jitsi. ✓ UNIX. Portable programming (C-99, POSIX, autotools), portable shell programming (POSIX.2) — dealt with many subtleties in different implementations. System programming. Embedded. ✓ My primary language is python now (see my Scripting profile). Currently learning django, ansible. I work fast, if in doubt, ask for the time estimate, beware, communication may take twice the time spent on coding, so it's always best to make up your mind before hiring! I'm honest, reliable and tenacious, and I don't remove bad feedback (enjoy!:) Lifetime warranty for my work (doesn't include new features though). The list of capabilities is not full, as I've experience ranging from Jenkins to writing parsers with lex/yacc, from IP traffic handling in C++ (libnetfilter_queue plus iptables custom kernel module) to product installers. I use Gentoo and EMACS. I'm easily searchable, and if you want, you can find any information about me outside of upwork. Aquila non captat muscas. Usually. But my rate effectively cuts off the stuff that everyone can do:) Also you may consider my agency (Laguz d.o.o.), there are junior programmers whom I supervise and ensure the work done. Should be about the same quality for a fraction of price. NB. If you want me to use some collaboration tools, usually it won't work. Few mail servers on Earth support my email, most of the time it's impossible for me to register.
Unix System Administration
Oracle PLSQLDjangoSocket ProgrammingCAwkMultithreaded ProgrammingPythonScrapySelenium - $135 hourly
- 5.0/5
- (115 jobs)
Telecommunication and Systems engineer with a focus on Cloud, Networking and Linux, experience in Infrastructure management and deployment. Deployed Private Cloud infrastructure, Datacenter Network Design for Multi-tenancy, fault-tolerant design, NIC Bonding and VRRP for High Availability. Stack: *Full virtual networking with vSwitches and vRouters *VLAN, VxLAN, GRE and Overlay tunnels *IPv6 *MP-BGP, EVPN *Firewalling *VPN/OpenVPN/IPSec/WireGuard/Site to Site and Client-Server * VPP/DPDK for 100G VPN and routing *Advanced Linux management: IPTables, Kernel modules, Virtualization, Networking. *Traffic engineering *Advanced StrongSwan IPSec tunnels, XFRM *Cloudstack with Open vSwitch *OpenNebula with Open vSwitch *OpenDaylight SDN controller with OpenvSwitch *Advanced Proxy setup with Squid/Nginx *Virtuozzo and OpenVZ *KVM and Libvirtd / Proxmox *MicroVM Managment / Firecracker *RADIUS and FreeRADIUS *Pacemaker/Corosync/Keepalived HA cluster *MTLS design and implementation with NGINX *IoT gateway implementation with Raspberry Pi and 4G modems *DevOps experience with Chef and Ansible *Bash and Python scripting
Unix System Administration
Internet of ThingsApache CloudStackLinux System AdministrationOpenVPNComputer NetworkPrivate CloudKernel-based Virtual MachineSystem AdministrationFirewallUbuntuNetwork SecurityLinuxInternet Protocol SecurityNetwork EngineeringVPN - $23 hourly
- 5.0/5
- (2 jobs)
Always thirsty to learn new stuff and to keep myself challenged. Specialties: Networking and hardware troubleshooting
Unix System Administration
Management SkillsTechnical SupportSoftware-Defined NetworkingFirewallComputer NetworkNetwork AdministrationNetwork Engineering - $25 hourly
- 4.9/5
- (183 jobs)
⭐ AWS Certified Solutions Architect & Full-Stack Magento/WordPress Expert (10+ yrs) I deliver high‑performance, secure, and scalable e-commerce solutions. I specialize in building and maintaining Magento 2 and WordPress sites on AWS cloud infrastructure that achieve 99.9% uptime and lightning-fast load times, helping businesses boost customer satisfaction and conversions. Whether you need an urgent fix or long-term site management, I’ve got you covered. 🔹 Key Services & Expertise: Magento 2 & WordPress Development – Custom themes, plugins, mobile optimization, and SEO-ready builds. Cloud Hosting & Architecture (AWS) – Scalable AWS environments (EC2, S3, CloudFront, RDS, etc.) with CI/CD automation. Performance Optimization – Page speed audits, caching, CDN, and DB tuning for faster load times and better SEO. Website Maintenance & Security – Uptime monitoring, backups, updates, malware cleanup, and firewall setups. Migrations & Upgrades – Seamless Magento 1 to 2, WooCommerce to Magento, and cloud/server migrations. Emergency Troubleshooting – 24/7 support for critical issues with fast turnaround and clear communication. 🔹 Results I’ve Delivered: Improved site load speeds by 70% Achieved 99.99% uptime on high-traffic eCommerce sites Reduced cloud infrastructure costs by up to 30% Migrated dozens of WordPress and Magento stores with zero downtime Maintained 100% Job Success on Upwork with long-term client relationships 🔹 Let’s Work Together: If you're looking for a reliable Magento/WordPress/AWS expert who can build, optimize, secure, and scale your web infrastructure, let’s chat! I’m available for both one-off projects and long-term collaborations.
Unix System Administration
Cloud ComputingAmazon LightsailAWS Server MigrationWebsite SecurityEcommerce WebsiteLinux System AdministrationHosting SetupDevOpsWebsite Performance OptimizationAWS CloudFrontAmazon EC2Amazon Web ServicesWooCommerceWordPress DevelopmentMagento 2 - $50 hourly
- 5.0/5
- (191 jobs)
I have 12 years of System Administration experience, in companies providing outsourcing services to Fortune500 enterprises around the world. What can I do for you: - migrate all kind of sites (from Wordpress to more complicated) to Amazon AWS, Ovh.ie, DigitalOcean, and any other providers. - configure various AWS Services (Ec2, CloudFront, RDS, Aurora, S3, SES, SNS, etc); - perform any kind of administrative work on your Linux Servers (install software, configure services, setup backups, etc); - create any kind of automations; - write scripts in Bash, Perl, Python; - configure monitoring systems using Nagios. I know how to install/configure/code: Web: apache, nginx, haproxy. Can recompile if needed, can install and compile modules. DB: Mysql (proficient), SQL Server (proficient), PostgreSQL (moderate). Programming Languages: Perl, Bash, PowerShell, JavaScript, Python. Monitoring Systems: Nagios (and derivatives), munin, monit. DNS: any system. Email: sendmail, exim, postfix. Hosting Panels: cPanel, Directadmin, VestaCP, ISPconfig. Virtualization: Amazon AWS - expert. Any other - can do. I'm an excellent learner, for a task I learned PowerShell in 5 hours (sufficient enough to make a pretty complex automation). For another task I learned JavaScript in 8 hours (sufficient enough to make a great Google Apps Script automation). It took me 3 days (24 cumulated hours) to learn Python. So if there is a technology not listed here, I either know it but didn't list, to save space, or I can learn it very quickly.
Unix System Administration
DevOpsLinux System AdministrationPython ScriptNagios CoreAWS Server MigrationWebsite MigrationLAMP AdministrationBash ProgrammingSystem MonitoringApache HTTP Server - $70 hourly
- 4.9/5
- (35 jobs)
Highly skilled C / C++ / Python / Rust / Lua Senior Software Engineer, with over 20 years of experience. My area of interests is in developing high-available, multi-threaded, high-performance Linux network applications. I'm the lead developer, maintainer and the active participant of several popular OpenSource projects. My recent projects: * custom modules for Envoy / Istio / Emissary projects * custom Nginx modules development (C / C++ language) * custom Apache modules development * custom HAProxy modules development * custom Varnish modules development * porting existing C code to WebAssembly * OpenResty Lua modules
Unix System Administration
Video StreamSystem ProgrammingEnvoyApache HTTP ServerGitNGINXLinuxSystem AnalysisSecurity EngineeringLuaRustFFmpegWeb Application FirewallC++CPython - $50 hourly
- 4.2/5
- (36 jobs)
I have experience in web design using WordPress, PHP, JavaScript, HTML and CSS. I also have experience with Linux and OpenBSD systems (web and otherwise), and I certified on Google Cloud (ACE). I specialize in WordPress. Please see the demo sites on the portfolio section for examples of my work and capacities. Hire me, and I'll make sure that you are 100% satisfied!
Unix System Administration
Google Cloud PlatformVirtual Private ServerLinux System AdministrationOpenBSDWeb DevelopmentWordPressHTMLPHPCSS - $60 hourly
- 5.0/5
- (51 jobs)
I’m a top-rated DevOps engineer and IT consultant with over a decade of experience providing businesses with proactive optimization, robust security, and continuous support. My solutions range from protecting small businesses with cost-effective, tailored retainers to implementing enterprise-grade security for Fortune 500 companies like IBM. My primary focus is building long-term relationships through retainer services that deliver consistent results, peace of mind, and proactive solutions. Why Choose a Retainer? Retainer packages offer you a dedicated partner focused on proactive monitoring, continuous improvement, and faster response times, all at predictable monthly costs—eliminating surprises and ensuring stability. Services I Offer: * Continuous system monitoring and optimization * Proactive DDoS protection and security audits * Managed cloud services and DevOps support * Server administration * Ongoing IT consulting tailored to your needs Let’s discuss how proactive support can transform your business. Schedule a discovery call or chat today to explore custom solutions. **Skills and Experience** * Cloud & Infrastructure: AWS, Azure, Google Cloud, IBM Cloud, Alibaba Cloud, Cloudflare, Akamai, Sucuri WAF * DevOps Tools: Jenkins, GitHub Actions, Travis CI, Tekton, Docker, Kubernetes, OpenShift * *Infrastructure as Code: Terraform, Ansible * Linux distros: Red Hat, CentOS, Fedora, AlmaLinux, Rocky Linux, Ubuntu, Debian, Amazon Linux * Scripting Languages: Python, Bash * Version Control: Git, SVN * Monitoring Tools: Instana, Prometheus, Grafana, Nagios, Monit * Project Management: Jira, Asana, Basecamp, Monday, ClickUp * CMS: WordPress, Magento, Adobe Experience Manager (AEM)
Unix System Administration
Malware RemovalWordPress Malware RemovalCloudflarePHPWebsite SecurityLinux System AdministrationSecurity AnalysisDevOpsGitMySQLWeb HostingWordPressSystem AdministrationDNSUbuntu - $18 hourly
- 5.0/5
- (38 jobs)
I am a Ruby developer with 9+ years experience who loves to make a good job, and finish it on time. I like to follow good practices and expand the knowledge whenever I can. I have experience with Unix like operating systems, Rails, Postgresql, Mysql, TDD (Rspec, Capybara), Javascript, HTML & CSS preprocessors, Redis, Elasticsearch, scraping among others.
Unix System Administration
UnixAPI IntegrationRuby on RailsJavaScriptHTML - $25 hourly
- 5.0/5
- (369 jobs)
"Top Rated Plus WordPress Developer | Elementor | WooCommerce | SEO Expert" Profile Overview: 🚀 Top Rated Plus WordPress Expert |100% Job success | 16+ Years | 300+ 5-Star Reviews I am a Top Rated Plus WordPress Developer with 16+ years of experience, a 100% Job Success Score, and over 20,000+ hours worked on Upwork. I specialize in building high-performance WordPress websites, optimizing for speed, security, and SEO, and enhancing user experience with Elementor, WooCommerce, and Custom Development. 💡 Why Work With Me? ✔️ 16+ Years of Experience in WordPress Development ✔️ 400+ 5-Star Reviews & 100% Client Satisfaction ✔️ Top Rated Plus Freelancer on Upwork ✔️ Fast Turnaround & SEO-Optimized Websites 🔥 WordPress Development & Customization ✅ Custom WordPress Website Development ✅ Theme Installation, Setup & Customization (Elementor, Divi, Avada) ✅ WordPress Plugin Development & Customization ✅ WooCommerce Setup & E-commerce Optimization 📈 SEO & Website Optimization ✅ On-Page & Technical SEO (Yoast, RankMath) ✅ WordPress Speed Optimization (Core Web Vitals) ✅ Security & Malware Removal ✅ Website Migration & Maintenance 🔧 Advanced Services & Integrations ✅ API Integrations (Zapier, Airtable, HubSpot, Salesforce) ✅ Email Marketing Setup (FloDesk, Mailchimp) ✅ LMS Integration (LearnDash, Tutor LMS) ✅ Figma/Adobe XD to WordPress 💬 What My Clients Say 🌟 "Rajeev is hands down the best WordPress expert on Upwork! Super fast, reliable, and always delivers beyond expectations." 🌟 "If you need a WordPress developer who knows SEO, speed optimization, and security—Rajeev is the guy!" 🚀 Ready to Take Your Website to the Next Level? Let’s connect! I am available 18 hours a day, 7 days a week to help you with any WordPress project. Click 'Hire Now' to discuss your project today! 🔑 Keywords for SEO Ranking WordPress Developer, WooCommerce, Elementor, WordPress SEO, Website Speed Optimization, WordPress Security, Custom WordPress Website, WordPress Plugin Development, API Integration, Divi, LearnDash, Website Redesign, Landing Page, Frontend Developer, WordPress Consulting, UI/UX Design, Technical SEO, E-commerce Website, Web Analytics, Adaptive Web Design, Responsive Website, Custom PHP, Zapier, Mailchimp.
Unix System Administration
WordPress MultisitePSD to WordPressLearning Management SystemPSD to HTMLWordPress e-CommerceWordPressResponsive DesignAdobe PhotoshopHTMLCSS - $12 hourly
- 4.6/5
- (5 jobs)
I am a person who loves challenges. I don't easily give up when there are new things to learn, even if other people find it hard. I don't consider difficulties as a hindrance in fixing each problem.
Unix System Administration
Customer ServiceSalesOrder FulfillmentSalesforce CRMTechnical SupportAutomotiveOnline Chat SupportZendesk - $120 hourly
- 5.0/5
- (39 jobs)
Top Rated Plus DevOps Engineer | Cloud Architect specializing in CI/CD, Kubernetes, and CloudOps on AWS & GCP. I help companies reduce deployment time by 40%, optimize cloud costs by 30%, and enhance security with automated solutions. A seasoned professional with over 18 years of hands-on experience in advanced multiplatform DevOps, system administration, and programming. Expertise in architecting and managing large-scale infrastructure on cloud platforms, implementing CI/CD pipelines, and ensuring network security. Proven ability to deliver high-performance solutions, improve system reliability, and align IT operations with business goals. --- ⚡ Core Competencies • ☁️ Cloud Platforms: AWS, Google Cloud Platform (GCP), Microsoft Azure, Yandex Cloud, DigitalOcean, Alibaba Cloud (AliCloud), Scaleway • 🚀 CI/CD & Automation: Jenkins, GitLab CI, GitHub Actions, Bitbucket Pipelines, CircleCI • 🐳 Containerization & Orchestration: Docker, Kubernetes, Helm • 🛠️ Configuration Management: Ansible, Puppet, Chef • 🏗️ Infrastructure as Code (IaC): Terraform, CloudFormation • 📈 Monitoring & Logging: ELK Stack (Elasticsearch, Logstash, Kibana), Prometheus, Grafana, Datadog, New Relic, Icinga2 • 🌐 Networking & Security: VPN, DNS, SSL, Firewalls, Load Balancers (HAProxy, NGINX), SOC2 Compliance • 💻 Operating Systems: Linux (Debian, CentOS, Ubuntu), FreeBSD, Windows, Vagrant, VMware • 🔄 Version Control & Collaboration: GitHub, GitLab, Bitbucket, Jira, Slack, Confluence • 🗄️ Databases: PostgreSQL, MySQL, MongoDB, Redis, Memcached • 💻 Scripting & Programming Languages: Bash, Python, Ruby, Java, PHP, Node.js • 🕸️ Web Servers & Stacks: Apache, Nginx, LAMP, Node.js, Ruby on Rails, WordPress, Magento • 🔐 Security & Compliance: SOC2, ITIL, ITSM, Drata --- 📚 Additional Skills • 🔒 Cloud Security: IAM, Security Groups, VPC, Encryption (KMS) • ⚙️ High Availability & Scalability: Auto-scaling, Load Balancing, Disaster Recovery Planning • 🛠️ DevOps Practices: Site Reliability Engineering (SRE), Blue-Green Deployments, Canary Releases • 🗄️ Database Administration: Backup & Recovery, Replication, Performance Tuning • 💰 Cost Optimization: Cloud Cost Management & Budgeting, Reserved Instances, Spot Instances • 📜 Certifications: AWS Certified Solutions Architect, Google Professional Cloud Architect, Azure DevOps Engineer Expert --- 🎯 Specialization • ⚙️ DevOps & Automation: Streamlining software development processes through automation, reducing time-to-market, and improving system resilience. • ☁️ Cloud Architecture: Designing and implementing secure, scalable, and cost-efficient cloud infrastructure across various providers. • 🔒 Networking & Security: Ensuring secure communication and robust network architectures, adhering to best practices in security and compliance (SOC2). ---
Unix System Administration
Infrastructure as CodeCloud ArchitectureContinuous IntegrationContinuous DeliveryPrometheusAnsibleTerraformAmazon Web ServicesKubernetesCI/CDDockerDevOpsNetwork MonitoringLinuxGoogle Cloud Platform - $11 hourly
- 4.9/5
- (197 jobs)
I am system/network administrator for over 14 years. Main specialization: * AWS/AmazonWebServices * Linux (Debian/CentOS) * LAMP/LEMP, PLESK, WHM/CPanel, VestaCP hosting panels * Websites/appalications/servers migration * Virtualization (KVM/LXC) * VoIP - Asterisk(IVR, DialPlan), Grandstream VoIP Phones(provisioning), Cisco VoIP Phones * Monitoring (Sensu+Grafana, Nagios, Zabbix, Cacti) * Networking * Cisco/Juniper/DLink/ZyXEL Switches/Router * VPN solutions - openvpn/ipsec/IPoE Good knowledge of CMS WordPress Basic knowledge of HTML, CSS, PHP, Perl, Ruby
Unix System Administration
Amazon Web ServicesNGINXAmazon EC2Linux System AdministrationLAMP AdministrationDNSCisco RouterPleskNetwork AdministrationFirewallJuniperVPN - $45 hourly
- 4.8/5
- (110 jobs)
* 20 years in UNIX world * Security-minded * Administrator & Developer for complex projects involving automation, integration, data mining * Attentive to details * Ensuring reliable & secure systems operation and effective consulting & coaching * Protection against Spam & other unsolicited communications in email, web and VoIP * Building effective web-presence assets (5+ years in Web/SEO)
Unix System Administration
AsteriskLinux System AdministrationWordPressUnix ShellLispInformation SecurityPythonGitAnsibleAmazon Web Services Want to browse more freelancers?
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