Network Administration Jobs

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Hourly - Expert ($$$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
Do you eat, sleep and breathe ZFS? Does properly configuring and implimenting 100's of TB's of FreeNAS storage keep you up at night? Can you create an efficient, simple and reliable storage system like nobody's business? If you love pushing the limits of IOPS, storage capacity, network speed, efficiency and more, this is the position for you. ARCHITECTURE We currently have 3 VMware ESXi servers running primarily Windows Server 2012 VMs. We have a freeNAS box filled with SSDs acting as our VM shared storage, another freeNAS box for our business storage (about 50 TB of space), and a third freeNAS box that is our backup target and archive server with about 100 TB usable of space. All ESXi servers are connected to 10 gbit Netgear ethernet switches (M7100s & M7300s) in a stack with clients connecting to client switches (Netgear M5300's in a stack). The M7300's handle our vlan routing. We have a VLAN for servers (management), Workstations, Phones, and Cameras. We currently have about 40 workstations in Detroit that are a mixture of Windows and Mac. We have a Windows Server 2012 r2 VM that is connected to our business storage via iSCSI connection to serve our files to our users. Our internet is a 1/1 gbps dedicated fiber connection. CHALLENGE - Things are running extremely slow to do any type of file operations, even from the server itself - We are seeing tons of reads/writes and are not sure why - FreeNAS hasn't been updated in a long time - The architecture of the storage might not be as efficient as it could be - It takes forever to do simple copy/paste operations between our main server and the archive server - Backups aren't even maxing out our 1 gbps fiber connection - NTFS permissions are probably not setup properly REQUIREMENTS - Must have expert-level knowledge in FreeNAS, networking and routing and iSCSI - Must be an expert with Microsoft Windows OS, Microsoft Server 2008 + 2012, VMWare - Must have a solid understanding of file systems and how they function - Experience working with pfSense a plus SUMMARY We're looking for an expert in freeNAS, iSCSI, VMware and Windows/Mac to basically get our systems running the right way so our data is secure, protected, available, and to treat the environment as their own. PLEASE NOTE: To make sure that you have read our requirements, please tell us your favorite color and provide examples of how you've architected vm storage (HA), normal business storage, archive storage and backups (on-site and off-site). Otherwise, we will reject all generic applications. If we find the right person and things get fixed fast, there is certainly opportunity for tons of on-going work with everything related to our network environment. ABOUT US Join the Revolution. Work with a company that’s changing the world. We are disruptive by design. We love solving the world’s toughest business challenges. It’s in our DNA to change the world and improve lives through our portfolio of companies. We plan on growing this project into something massive and incredible. Come enjoy the ride with us!
Skills: Network Administration Microsoft Windows Server Network Engineering VMware ESX Server
Hourly - Intermediate ($$) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
We are looking for a Network & System Engineer with strong skills in terms of application management. Successful candidates understand that their job goes far beyond patching the OS. Of course, you have to do proper maintenance, BUT your main job is being a technical facilitator and an IT-architect who knows how to apply state-of-the-art technology on a practical level. Your duty is enabling application developers and business operations to fully benefit from the IT-infrastructure. As our Network & System Engineer you will make sure that hardware and software get aligned correctly TOGETHER with the ever-changing requirements of application services and users. Your professional approach MUST include the following attributes: - Commitment to highest quality standards and best practice techniques - Proficiency in setting up, installing, and configuring networks and systems - Acquainted with the concept of development environment vs live production - Ability to set up, install, and configure applications in support of our dev team - IT-Security awareness with regards to vulnerabilities of infrastructure and applications - Readiness to communicate with project managers and lead developers over voice daily - Knowledge on how to explain complicated technical matters to non-tech biz managers - Excellent writing, drawing & documentation skills to keep our WIKI up-to-date - Willingness to keep our infrastructure tidy and organized - Competence regarding secure credentials management - Appreciation of manual end-to-end tests (DIY) - Know-how concerning ethical hacking Experience required related to networks and systems: Linux Ubuntu Linux Centos Apache Server Windows Server Sophos Firewall Active Directory VMWare Veeam VLan VPN Domain Name Systems SAN & NAS Storage IP-address management XCA Certificate and Key Management Virtual Firewalls and Application Service Management Experience required related to software engineering, applications, and operations: Docker Puppet Server/Foreman Team Password Manager KeePaas Redmine Jira Jenkins Git (BitBucket/Github) SonarQube Apache Tomcat PostgreSQL Flyway Drupal Mail Server Requirements in terms of availability & approachability: We maintain a proprietary agile development workflow requiring team members to communicate the status of their tasks in daily stand-up conference calls at 10h or 11h Central European Time. The daily stand up call takes about 15 minutes from Mo-Fr, and is done via Skype. Therefore, English language skills in speech and writing are vital. Chat messaging is not sufficient. In addition, we host acceptance meetings, sprint planning meetings, backlog grooming meetings on a weekly basis. Each of these meetings may take around 1h. You may have to participate in one of these meetings upon request. Furthermore, we allow time for 1-on-1 sessions between team members. You will have to perform 1-on-1-sessions with other team members on a regular basis. Most importantly, you will have to participate in the stand-up calls on a daily basis. Overall, your engagement will be at least 20h per week during our regular office hours, hence, you cannot do this job on the side in the evenings or whatsoever. Requirements in terms of the selection process: Kindly note the below if you want your bid to be considered for an interview: 1. Read the entire job description before you apply because we are looking for an engineer who pays attention to details and is willing to read resp. capable of writing regardless how technically perfect he/she is otherwise. 2. Write a formal cover letter addressing the content mentioned in our job description. 3. Answer the 5 screening questions in written and meaningfully. 4. Send us your CV as a PDF-attachment. 5. Do not drop us chat-messages with random questions, however, we value any courtesy-note combined with a proper application and will reply in due course. We will consider your offer if and only if you follow the instructions outlined here. Looking forward to contact you in case your application gets shortlisted.
Skills: Network Administration Active Directory Application Lifecycle Management Application Server
Hourly - Expert ($$$) - Est. Time: More than 6 months, 30+ hrs/week - Posted
We are looking for an experienced system administrator for long term project Experience: -Experience And knowledge of the installation of Linux (CentOS, Ubuntu) -Experience Working with KVM virtualization, VMware -Experience Working with Zabbix monitoring systems, Nagios. -Experience Configuration, implementation of version control systems (SVN, GIT) and migration between them. -Experience Working with network equipment ASA Cisco -Experience working with server and network equipment; -Experience Working with TCP / IP, VPN, DNS, NAT
Skills: Network Administration Atlassian JIRA CentOS Cisco ASA
Fixed-Price - Intermediate ($$) - Est. Budget: $180 - Posted
• End user support (Hardware and software) • Delivery of IMACs (Installations, Moves, adds and changes) • Install OS and software platform of equipment and transfer of user data • Transfer of data from the old to the new computer Contract : 2 MONTH 5 DAYS A WEEK
Skills: Network Administration Cisco Certified Internetwork Expert (CCIE) Cisco Certified Network Associate (CCNA) System Administration
Fixed-Price - Intermediate ($$) - Est. Budget: $180 - Posted
• End user support (Hardware and software) • Delivery of IMACs (Installations, Moves, adds and changes) • Install OS and software platform of equipment and transfer of user data • Transfer of data from the old to the new computer Contract : 2 MONTHS 5 DAYS A WEEK
Skills: Network Administration Cisco Certified Internetwork Expert (CCIE) Cisco Certified Network Associate (CCNA) System Administration
Hourly - Expert ($$$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
We are in need of one high level security expert to provide server vulnerability testing and hardening and someone to assist with possible site migration efforts. You must be trustworthy, an excellent communicator and have several years of network security experience. References will be required as well as an active LinkedIn account.
Skills: Network Administration DNS Linux System Administration Network Engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
We have an existing dedicated server running LAMP (Ubuntu 14.04.3 LTS & Webmin/Virtualmin) which serves CMS/PHP websites, client portals, email and mysql etc. We have 1 spare dedicated serve which is the same hardware and has Ubuntu 16.04.1 installed but is currently blank and unused. We're looking for a solution so that when Server 1 (the dedicated server already in use) needs maintenance, updates or if it fails then the second spare server detects this and takes over and serves the websites and other services. When Server 1 is then back online, Server 2 would then detect its presence again and sync any updates, file changes/emails or websites changes back to Server 1 again and then switch back so that Server 1 is serving the content again. We only have these two server available for this and no other hardware. The other problem is that we don't think we can use block level mirroring/DRDB or similar due to not having the right partitions setup already on the server in use. We're open to ideas and solutions on this but just need a simple and cheap solution that is reliable and won't corrupt or lose any data. We've already found a couple of potential guides to Heartbeat, corosync, pacemaker and keepalived but are unsure how to best use them and set them up without causing too much downtime on the active Server 1. This guide also mentions using rsync and looks reasonable and fairly simple but misses a couple of the requirements needed and also we're unsure if it is the best solution being a 6 year old post: http://mfarrukhsiddique.blogspot.co.uk/2010/01/highly-available-webservice-by-using.html We'd also need details of what is implemented and how to make sure it can be recreated in future if we add further servers or if we have a problem and need to reconfigure things. Thanks for any options on this.
Skills: Network Administration Computer Networking LAMP Administration Linux System Administration
Hourly - Expert ($$$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Server 2016 is being used as an endpoint. I am getting error 800 when trying to connect to the VPN. I can ping the server which has the VPN and I have disabled the firewall on Server 2016 and need this to be resolved. Current VM is in Azure that cant connect. Same account can connect to server using different PC.
Skills: Network Administration Cisco Certified Network Professional (CCNP) Cisco Certified Design Expert (CCDE) Cisco Certified Internetwork Expert (CCIE)