Sr Systems Administrator

We are hiring a  Sr Systems Administrator  to join team our client.

Reporting directly to the CTO and managing the overall system infrastructure.

This is a senior administrator and architecture role responsible for the overall technical management, operations, ongoing maintenance and support of our large scale production platform.

Responsibilities:

•  Daily monitoring and maintenance (including periodic upgrades, backups, preventative maintenance, etc) of various staging and production environments, ensuring uptime and stability.
•  Troubleshooting systems performance issues, formulating a repair-strategy and implementation thereof.
• Continued review of security architecture and ensuring exploitable vulnerabilities are mitigated.
•  Designing and architecting system and platform changes, according to business requirements, including systematic role-out plan/strategy for deploying those changes to live environments.
•  Configuring, testing, deploying and maintaining various:
•  physical and virtual servers network equipment cloud tenancies databases third-party software platforms
•  Integrating/interfacing hosted on-prem systems with third-party cloud-based platforms.
•  Collaborate with multiple teams on various projects and deployments
•  Basic user helpdesk support (setting up accounts, VPN configs, etc)

Requirements:

• Minimum of 5 years experience in a senior infrastructure engineer / systems architecture role for technology-oriented organization required.
• Hands-on experience working with Linux (incl all of the below on Linux).
• Strong understanding of Ubuntu Server edition and Centos/RHEL required.
• Strong understanding of Linux mail systems, SMTP, large scale email platforms, DKIM, SPF and the holistic process behind email delivery/transfer.
• Extensive experience working on AWS and GCP.
• Exceptional problem determination and creative problem solving skills.
• Strong written and verbal skills.
• Strong understanding of software development lifecycle.
• Strong documentation and organizational practices.
• Extensive experience with many of these:
• Mac OSX / Linux (Both hardware and Operating Systems)
• MySQL, deployment, clustering, replication, maintenance and troubleshooting
• Network architecture, deployment and troubleshooting 
•            L2 switching, VLAN’s, DNS, DHCP, etc
•            basic static routing principles
•            stateful firewalling (NAT, Zonal FW policies, etc)
•           load balancing and ssl-offloading
•           remote access and VPN concepts
•           proxying (especially Squid, HAProxy)
• Network, physical and virtual host system security (local FW policies, IDS systems, mac-filtering, DMZ’s, etc)
• Monitoring platforms and SNMP (Nagios, Icinga, OpenNMS, etc)
• Cloud based security platforms (Cloudflare, etc)
• Cloud-computing technologies (OpenStack, oVirt, RHEV or similar)
• Backup technologies
• Deployment automation systems (Ansible, Puppet or equivalent)
• Expertise with multiple Web technologies including but not limited to: HTTP, SSL, DNS and SMTP protocols.

Location: Puerto Madero

Time shift: Full time

English level: Upper intermediate