IT Cyber Security Analyst – Tier 3

Come and join the Littlefish team!

Work location:
Nottingham Or Sheffield (Hybrid)

Salary:
Up to: £50,000 + £3000 On Call Allowance

Must be eligible for SC Clearance (UK resident for the last 5 years) and NPPV2 clearance

This position sits at the senior technical core of the SOC. The successful candidate will own complex investigations, mature detection capability, and provide authoritative guidance to Tier 1 and Tier 2 analysts across multiple client environments.

The role combines advanced analysis, engineering-grade thinking, and day-to-day leadership. You will be trusted to make defensible decisions quickly, improve how the SOC operates, and ensure customers receive consistent, high-quality outcomes.

If deep technical work, measurable impact, and helping others raise their game is where you do your best work, this remit will suit you.

Are you ready to step into one of the most impactful roles within our Cyber Security Operations Centre? We’re looking for a Tier 3 Cyber Security Analyst — someone who loves digging deep into threats, leading from the front, mentoring others, and elevating the security posture of multiple client environments.

This is your chance to operate at the sharp end of cyber defence: hunting threats, shaping detection capability, and being the escalation point our analysts rely on. If you thrive on solving complex problems, taking ownership, and making real‑world impact, this role is built for you.

As our Tier 3 Analyst, you’ll play a critical role in strengthening our CSOC:

• Develop, optimise, and maintain SIEM detections across diverse customer estates
• Lead structured threat hunting informed by intelligence and hypothesis-driven methods
• Manage complex incidents including scoping, containment strategy, and root cause analysis
• Provide authoritative guidance to Tier 1 and Tier 2 analysts during live investigations
• Produce clear technical and executive-level reporting for service reviews
• Translate technical risk into business impact for non-technical stakeholders
• Conduct or oversee vulnerability analysis, access reviews, and control validation
• Identify automation and process improvement opportunities
• Contribute to service development, playbooks, and quality standards
• Coach and mentor analysts through case reviews and daily collaboration
• Support skills uplift and readiness across the SOC
• Help standardise investigative approaches and evidence handling

• Proven background within a SOC or equivalent operational security function
• Demonstrable ownership of incidents within demanding SLA environments
• Strong working knowledge of SIEM, EDR, and email security platforms
• Practical experience with Microsoft XDR technologies
• Ability to create and tune detections using KQL
• Track record of supporting or mentoring other analysts
• SC-200, CySA+, or comparable certifications (desirable)
• Clear communicator in both technical and business contexts
• Analytical, methodical, and outcome-focused
• Comfortable taking ownership and being accountable for decisions

• Strong understanding of adversary behaviours, tooling, and attack life cycles
• Competence across endpoint, server, identity, cloud, and network domains
• Ability to assess control effectiveness and recommend pragmatic mitigation

• Through our one of a kind training programme, the Littlefish Academy, you can increase your earnings by £4,500
• Referral bonus scheme of £1000 when you successfully refer a friend.
• Access to our Linked In Learning platform, with over 16000 expert-led online tutorials to enhance and achieve your personal and professional goals.
• Healthcare cash plan. This will give you access to online GP appointments, 24/7 access to qualified counsellors and cash back against a range of general healthcare
• Casual dress policy
• Company Pension Scheme
• Company social events
• 25 days annual leave plus public / bank holidays
• Purchase of annual leave scheme

Our company values shape who we are as a business, what we stand for and how we work. Hiring people with our values at heart, is very important as we see Littlefish grow.

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