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Cyber Security Analyst â SIEM Data Analysis

2 months ago

Welwyn Garden City, United Kingdom Tesco Full time
About the role

About The Cyber Security Team

Our cyber security team are the eyes and ears of our organisation. We use the latest technologies to increase visibility and protection of systems, services and data. To do this we need to stay ahead of the latest threats and continuously improve our tooling, techniques, and processes.

Responsible for developing and running security processes day-to-day for the Tesco Group, weâre continually working to step change security capability to further enhance the protection and controls that we offer for our customers and colleagues across the UK, Europe and Asia, and weâre looking to add great people to our growing team.

Weâre looking to add great people to our growing team because we believe that skilled and passionate people are our greatest asset in reducing risk to our business and customers. We encourage and support continual development and learning, and recognise the importance of keeping up with changes in technology and an evolving threat landscape.

Communication is key - working collaboratively with our software and systems engineering teams to support security throughout the development lifecycle, as well as to build proactive monitoring and responses to security events.

You will be responsible for

We are seeking a passionate and collaborative security professional with the ability to measure the quality of security telemetry, like firewall data or proxy data and be able to identify when the data doesnât meet the requirements for a specific detection or data model.

Working with support from the team, you will help oversee and progress the changes required to fix the quality gap through to production.

You will need

Responsibilities:

  • Working across teams to achieve significant improvements in data quality
  • Continuously analysing current data, looking for opportunities for data rationalisation and content standardisation, making sure data is aligned with a common information model
  • Define, implement, and monitor data quality rules in order to detect problems at an early stage
  • Deliver change to enable adoption of data quality rules, ensuring continuity of business operations
  • Drive data issue identification, root cause analysis, resolution planning, and execution with business and IT owners
  • Translate data quality results into clear business impact statements to help understanding & adoption of data management practices
  • Establish yourself as the data quality subject matter expert, providing operational quality monitoring and resolution

Desired Skills:

  • Ability to perform data normalisation as per a common information model
  • Ability to perform correlation across varied and large sets of data to provide enrichment.
  • Experience with data parsing techniques e.g. regex for field extraction.
  • Proven technical understanding of logs from different operating systems and security tooling.
  • Practical application of data query languages (SQL, SPL), scripting languages (Python,PowerShell)
  • Comfortable working with large-scale datasets and data manipulation software
  • Ability to work independently to identify issues and improvements
  • Clear communication of complex concepts both within my team and across teams/departments
Whatâs in it for you

We offer excellent benefits that help make Tesco a great place to work. These include but arenât limited to:

We offer excellent benefits that help make Tesco a great place to work.  These include but arenât limited to:

  • Annual bonus scheme up to 20% of base salary
  • Holiday starting at 25 days plus a personal day (plus 8 Bank holidays)
  • On-site state of the art gym at our Welwyn Campus with discounted âGympassâ membership & free health checks via Nuffield Health
  • Retirement savings plan - save between 4% and 7.5% and Tesco will match your contribution
  • Life Assurance - 5 x contractual pay
  • Share Schemes â Join our âBuy As You Earnâ & âSave As You Earnâ share schemes after 3 months service
  • Colleague Clubcard (including a 2nd card for a family member) after 3 months service
  • Colleague Discounts:
    • 10% increasing to 15% after every pay day for a four day period, off most purchases at Tesco
    • 10% off One Stop
    • 10% off pay monthly & SIM only deals with Tesco Mobile
    • 20% off all F&F purchases
    • 20% off car, pet and home insurance at Tesco bank. T&Câs apply
    • 25% off Tesco Café
    • 50% off complete glasses purchases & free eye tests (other offers available) at Vision Express
    • 50% off health checks at Tesco Pharmacy
  • An exclusive deals and discounts website saving you money on everyday purchases, treats for the family, eating out and utility bills for the home
  • Cycle to work scheme
  • Shuttle Bus Service to/from Welwyn Garden City Station to Welwyn Campus
  • Opportunities to get on - take advantage of our ongoing learning opportunities and award-winning training, to help you achieve the job and career you want
  • Our Employee Assistance Programme helps you deal with lifeâs challenges
  • Financial wellness - Tesco has partnered with experts to help you make the most of your money
  • Get involved in a range of fundraising activities with our long-term charity partners