Security Analyst III - SOC

About the role

As a Security Analyst III, you will be the

technical authority within the SOC, leading high-quality investigations and

proactive threat hunting to protect the organisation from evolving threats. This

hands-on role combines advanced technical expertise with leadership, coaching

analysts, driving SOC maturity, and optimising tools and processes to set the

standard for excellence across the team.

You will act as a role model for SOC

Analysts, coaching and guiding them to elevate technical capability and

analytical rigour. Beyond day-to-day operations, you will lead maturity

objectives, optimise SOC tooling, and identify opportunities for automation, AI

integration, and impactful service improvements. You will also play a key role

within the CSIRT team, collaborating on major incidents.

You will be responsible for

• Deliver high-quality investigative analysis

  to ensure rapid and accurate incident resolution.

• Act as the escalation point and technical

  authority for complex SOC investigations.

• Lead proactive threat-hunting initiatives to

  identify and mitigate emerging threats before they impact the business.

• Role-model analytical excellence and

  decision-making, setting the benchmark for SOC performance.

• Coach and mentor analysts to build technical

  depth and confidence across the team.

• Drive SOC maturity objectives, improving

  processes, tooling, and automation for greater efficiency.

• Enhance SOC tool utilisation, including

  workflow optimisation.

• Identify and implement automation, AI-driven

  enhancements, and playbook developments.

• Support CSIRT activities during major

  incidents, ensuring coordinated and effective response.

• Monitor MSSP performance, ensuring alert

  triage and investigations meet quality and timeliness standards.

You will need

• Over 2 years’ experience working in an

  internal SOC or 3 years at an MSSP in a senior role.

• Deep knowledge of cybersecurity frameworks:

  MITRE ATT&CK, Cyber Kill Chain, Incident Response Lifecycle, Pyramid of

  Pain.

• Expertise in threat hunting and advanced investigative

  analysis.

• Deep understanding of attacker tactics,

  techniques, and procedures (TTPs) and threat actor behaviours.

• Proficiency in SIEM/XDR platforms and tuning

  detection logic, use cases, and alert optimisation.

• Advanced querying and scripting skills (e.g.,

  KQL, SPL) for data analysis and threat detection.

• Ability to recommend tooling enhancements and

  process improvements to strengthen SOC capability.

• Practical knowledge of networks, operating

  systems, and scripting for investigative purposes.

• Experience in leading technical initiatives

  and driving service maturity improvements.

• Demonstrated ability to coach and develop

  team members, fostering technical excellence.

Desirable

• GIAC certifications

• Other relevant certifications such as CISSP

  or CISM will be considered.

• A relevant degree, with professional

  experience.

Whats in it for you?

We’re all about the little helps. That’s why we

make sure our Tesco colleague benefits package takes care of you – both in and

out of work. Click

Here to find out more!

• Annual

  bonus scheme of up to 20% of base salary

• Holiday

  starting at 25 days plus a personal day (plus Bank holidays)

• Private

  medical insurance

• 26

  weeks maternity and adoption leave (12 months service required at

  the  qualifying  date) at full pay, followed by 13 weeks of

  Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks

  fully paid paternity leave

• Free

  24/7 virtual GP service, Employee Assistance Programme (EAP) for you and

  your family, free access to a range of experts to support your mental

  wellbeing

*The above information is a shortened summary, refer

to our policies for full detail*

About Us Our vision at Tesco is to become every customer's favourite way to shop, whether they are at home or out on the move. Our core purpose is ‘Serving our customers, communities and planet a little better every day’. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet. 

 

We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We're committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We’re proud to have been accredited Disability Confident Leader and we’re committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please click here. 

 

We’re a big business and we can offer a range of diverse full-time & part-time working patterns across our many business areas, which means that we can find something that works for you.  We work in a more blended pattern - combining office and remote working.  Our offices will continue to be where we connect, collaborate and innovate.  If you are applying internally, please speak to the Hiring Manager about how this can work for you - Everyone is welcome at Tesco.