Linux Senior Applications Support Engineer

Linux Senior Applications Support Engineer required for a permanent opportunity.

Remote work with the possible occasional travel in to the office.

Our client, a Digital Communications company urgency requires a professional Linux Senior Applications Support Engineer. You will be working as part of a small team, supporting Heritage/Legacy infrastructure. The company is planning to move fully on to their new infrastructure within the next 12-18 months at which point the suitable candidate might be offered the opportunity to move on to supporting the new infrastructure. (Cloud based)

This is a great opportunity for someone wanting to be part of a small team, who equally likes working on their own. You will be provided with training as and when needed and there will be plenty of space for growth and expand your existing skills and knowledge.

Essential skills include commercial experience of:

General skills (navigating, reviewing / filtering log files, reviewing systemctl / journalctl, editing JSON / YAML, crontab, etc)
Basic disk management (resizing disks / partitions, fdisk / gdisk, fstab etc)
Nginx knowledge. Direct hosting and reverse proxying
SFTP management via OpenSSH (hardening, chroot management, auth management etc)
MySQL user / database management
MySQL / MariaDB server management (my.cnf properties, global variables etc)
Networking

Preferred:

Ansible playbook creation / editing
Cisco ASA OS knowledge (both CLI + ASDM)
Cisco IOS (Catalyst) knowledge
troubleshooting ability to trace data through a series of applications using logs etc to piece together a wider picture across a series of bespoke applications
Certificate management via openssl, java keystore
Elasticsearch / elastalert management
Postfix mail relaying (whitelisting, api key authentication etc)
MySQL basic data retrieval (SELECTS, basic understanding of keys / joins)
HAProxy management (managing a multi-stage HAProxy configuration, for both external and internal requests)
Basic management of Windows Services
Basic management of file shares
Veeam backup and replication management. Both Linux and Windows guests. Some knowledge of disaster recovery scripts, re-IPing, Veeam proxying, etc
Knowledge of administering VMware / vCenter
Server and application monitoring via Check_MK / Nagios
Understanding of CI. Able to build build pipelines (Atlassian Bamboo for our setup, but things like Jenkins, gitlab ci etc)
Understanding of application packaging and deploying (Octopus Deploy). Create and management multi-tenanted deploy projects

Nice to have:

Foreman / Katello patching / errata management
Ndjbdns recursive DNS
Syslog-ng syslog log aggregation
Jira / jira service desk on-prem management
Basic bash scripting
Basic Snort (IDS)
Microsoft SQL basic management (very rarely touch the few we have)
ProxySQL Proxying (setup, day-to-day management of user creation etc)
MongoDB basic management
MongoDB basic querying (mainly finding data, occasional deletion)
NAXSI WAF management (used as part of our External HAProxy setup)
Basic management of AD (users, DNS, group policy etc)
Basic management of Windows Certificate Services
RADIUS understanding / knowledge
IIS administration knowledge
WSUS
Kaspersky anti-virus / application patching management
Azure AD connector
Basic understanding of Cisco UCS configuration
Understanding of AnyConnect client VPN configuration
Basic knowledge of EMC SAN configuration, pools etc
QNAP NAS
Administration knowledge of Quadient products (Inspire Interactive, Inspire Automation, Inspire Scaler, Inspire ICM, Inspire IPS, Inspire License Manager)
Understanding of API fundamentals. Able to craft and test API requests using tools like Postman
SendGrid email relaying
Understanding of git. Cloning, branching, etc
Bitbucket management (repos, users, webhooks etc)
Knowledge of Nuget, Nuget repo hosting, building against Nuget repos etc
Basic powershell scripting
Basic troubleshooting of .NET / .Net core