Linux Infrastructure Engineer

Job description

About Barclays

Barclays is an international financial services provider engaged in personal banking, credit cards, corporate and investment banking and wealth management with an extensive presence in Europe, the Americas, Africa and Asia. Barclays' purpose is to help people achieve their ambitions – in the right way.

With over 300 years of history and expertise in banking, Barclays operates in over 50 countries and employs approximately 140,000 people. Barclays moves, lends, invests and protects money for customers and clients worldwide.
At Barclays, we recruit based on merit and are committed to promoting diversity throughout our organization.

About Barclaycard Business Solutions

Barclaycard Business Solutions is a portfolio of B2B2C (business to business to consumer) businesses including merchant acquiring, commercial payments, offers and point-of-sale (POS) finance.
Making our clients more successful is at the heart of what we do. We are unique. We are the only business in the UK which can make and take payments, putting us in a unique position to offer a broader choice of payment solutions and products to our B2B customers.
Our focus is on making clients more successful by allowing them to always make the sale, help them pay and to help them to promote and sell.

About Payments Tower
The primary function for the Payments Technology Tower is to support the Global Payments Acceptance business and in doing so running payment transactions for 30% of the UK high street, adding business value by leveraging technology solutions and payments domain / industry knowledge. The tower also operates across Barclaycard and the wider bank providing payment solutions where the other business units are acting as a merchant or in the operation of authorisations and settlement routing.
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We are an equal opportunity employer and we are opposed to discrimination on any grounds.

Overall purpose of role
As a member of the Infrastructure Team, the primary function of the role is to ensure the Linux based infrastructure is robust, resilient and compliant to PCI standards.
The individual will with other members of the team install, configure, maintain, support and optimise the RHEL environments and differing types of server either virtual or physical, storage and server hardware.
The individual will play a key role within the infrastructure team in supporting our Client facing teams enabling them to respond to the needs of the business.
The individual will ensure best practice is followed in a commercial environment that supports high profile transactional web sites using industry standards.
The individual will work closely with Development teams to ensure that new solutions are built to be highly available, scalable, supportable and secure.
The individual will manage and support production and test systems to high levels of availability, performance and Security at all times.

Key Accountabilities
· Monitor and proactively improve the Groups Managed Service infrastructure and services, by administering the Linux environment and infrastructure technologies to ensure best practice engineering, administration and maintenance.
· Design, build, install and configuration of open source software applications.
· Carry out multiple project engagements while prioritising and resolving time-critical situations reliably
· Assess system performance by performing system monitoring and analysis, and performance tuning; designing and running system load/stress testing and escalating problems to vendor.
· Undertake Root Cause analysis in problem management for service interruption and recovery
· Create logical and physical designs of production and test environments.
· Analyse and optimise Linux based production and test systems and related components to improve the availability and performance of the various business applications.
· Use analysis and troubleshooting skills to review the existing infrastructures and implement tactical fixes and long term improvements with the aim of reducing the number of service affecting incidents.
· Alongside technical tasks, contribute to some project management elements to organise and implement the migration of existing users away from legacy platforms.
· Design and implement highly resilient and secure 3 tier web infrastructures.
· Adhere to the formalised Change Management process within the Infrastructure technical team.
· Be a part of an on call rotation that does 24x7 monitoring, and be accessible via pager and/or mobile.
· Deploy security hardening standards that achieve PCI compliance.
· Help design and implement increased event and alert monitoring and performance reporting on server farms.
· Assist in mapping out current and future performance and scalability issues and solutions.
· Ensure compatibility of deployed infrastructure between dual data centres to maintain BCP and Disaster Recovery

Risk and Control Objective
All Barclays colleagues have to ensure that all activities and duties are carried out in full compliance with regulatory requirements, Enterprise Wide Risk Management Framework and internal Barclays Policies and Policy Standards

Person Specification
· Strong Unix / Linux administration skills in a predominantly Redhat, multiple tier, diverse site, 24 x 7, financial environment.
· Extensive experience in administering, configuring and tuning
· Linux Kernel
· Apache
· JBoss / Tomcat
· LDAP
· DNS
· Email
· Strong scripting and programming using
· Perl
· Shell
· Java
· Experience supporting environments with large (>100) numbers of Servers
· Extensive knowledge of Redhat Satellite, RHEL 4, 5, 6, TCP/IP, DNS, and DHCP
· Practical experience of monitoring applications via Nagios

Preferred :

· Experience with SFTP/FTPS
· Experience with SSL, PHP3, PHP4 and MySQL
· Experience with SMTP, POP3, IMAP
· Strong experience of VMware and Netapp
· Experience with applying server hardening standards
· Ability to build, rack and stack platforms within DC's.
· Must have excellent communications skills, ability to prioritise assignments as well as work on concurrent ones.
· The selected candidate must be able to work in fast paced environment and be available for out of hours working.
· Experience of certificate management / encryption
· Relevant industry understanding
· Ability to solve problems quickly and automate processes
· Behavioural Competencies
· Creativity and Innovation
· Communication (verbal, written, and listening)
· Results and Achievement Orientation
· Ownership and Accountability
· Teamwork and Cooperation
· Judgement

Specific Requirements :

There will be a requirement for the job holder to perform out of hour's activity as directed.
There might also be the need for occasional UK and overseas travel.

Values & Diversity

Our common purpose is to help people achieve their ambitions – in the right way. We'll measure and reward our people, not just on commercial results, but on how they live our Values of Respect, Integrity, Service, Excellence and Stewardship and bring them to life every day. To find out more about working at Barclays and the development opportunities we offer please visit our website http://www.barclays.com/

We are an equal opportunity employer and we are opposed to discrimination on any grounds.

Respect
We respect and value those we work with, and the contribution that they make.
Integrity
We act fairly, ethically and openly in all we do.
Service
We put our clients and customers at the centre of what we do.
Excellence
We use our energy, skills and resources to deliver the best, sustainable results.
Stewardship
We are passionate about leaving things better than we found them.