UNIX/Linux Systems Administrator

JOB DESCRIPTION

Advanced Managed Services

Job Title: UNIX/Linux Systems Administrator

Reporting to: UNIX Team Lead

Location: London

Main Purpose of the Job

Working as part of a small technical team to provide technical expertise and support on UNIX/Linux servers for internal and customer systems. Work closely with the Professional Services Team to ensure effective delivery of UNIX/Linux related projects for existing and new customers.

Main Duties and Responsibilities

·         Operating system and software administration, fault analysis and remediation on Advanced and client equipment across multiple UNIX & Linux operating systems and versions including but not limited to RHEL, CentOS, Solaris & HP-UX.

·         Support the Pre-Sales & Sales teams to develop client solutions using suitable technology.

·         Support the Professional Services team in the on boarding of new customers and new solutions for existing customers. This will involve taking a project from a design phase all the way through build to delivery and ongoing support.

·         Controlled build, reconfiguration or upgrade work carried out under strict change control procedures.

·         Creation, testing and maintenance of systems configuration and procedural documentation.

·         Participate in the Advanced 24x7 on-call support rota.

·         Application of OS patches and upgrades on a regular basis,

·         Upgrade administrative tools and utilities.

·         Conduct root cause problem investigations for infrastructure and application issues.

·         Use of configuration management tools to ensure access and security across the managed estate.

·         When required visit client sites for meetings or to resolve issues.

Person Specification

The ideal candidate will bring with them/be:

·         Proven experience of working as a UNIX/Linux Engineer in large and complex environments.

·         The ability to manage complex and large-scale technical solutions.

·         Excellent problem solving capabilities;

·         The ability to work independently as well as part of team.

·         Excellent organisation skills e.g. ability to prioritise and multi task, lead technical projects, and complete the project within defined timescales.

·         A good decision maker and diligent in the execution of tasks.

·         Excellent interpersonal, written and verbal communication skills.

·         A willingness to learn and develop personal skills.

·         A proactive approach to work and a willingness to help others use IT effectively.

·         A willingness to mentor and teach more junior team members and assist in their development.

·         The ability to own, prioritise and be responsible for own workload.

·         Able to maintain professional standards at all times.

·         Able to comply with the provisions of ISO27001 certification and the Company Security Policy in particular relating to system and data security

Knowledge and Experience

Essential Skills:

·         Degree qualified or equivalent relevant experience.

·         Strong knowledge of RHEL/CentOS 5/6/7 in an enterprise environment.

·         Knowledge of HP-UX and Solaris.

·         Knowledge of Orchestration/Configuration Management tools (e.g. Ansible, Chef, or Puppet)

·         Experience in resolving BAU issues.

·         Experience managing full application stacks from the OS up through custom applications

·         Demonstrable experience in supporting and managing a large number of complex multi-server, multi-vendor, multi-technology infrastructures.

·         Experience in progressing projects from technical design all the way through to delivery.

·         Good understanding of the design and configuration of UNIX/Linux systems.

·         Experience working with 3rd party vendors.

·         Experience providing on call and out of hours support.

·         Experience with software management – installations, patching of OS/apps etc.

·         Experience with Virtualization ideally VMWare

·         Knowledge of one or more scripting languages (e.g. Bash, Ruby, Python)

·         Solid understanding of TCP/IP networking concepts and major protocols.

Desirable Skills:

·         Experience providing systems administration in a similar Managed Services environment.

·         Experience with cloud technologies such as AWS or Microsoft Azure.

·         Experience with containerisation such as Docker or similar.

·         Experience with web technologies eg. Apache, HAProxy etc.

·         An understanding of RDBMS databases particularly Oracle would be highly beneficial.

·         Experience with network security - physical and software firewalls eg IPtables

·         Experience with server monitoring ideally Zabbix.

·         Experience configuring and managing MTAs eg. EXIM, Sendmail, Postfix.