Cyber Security Engineer

Internal Advert Only

• Work location: Nottingham or Sheffield (Hybrid)
• Salary: Up to: £35,000
• Must be eligible for SC Clearance (UK resident for the last 5 years) and NPPV2 clearance
• Application closing date: Sunday 1st February 2026
• Interview commencement: Monday 2nd February 2026

As we continue to grow and evolve, we know that our strength lies in the talent, creativity, and drive of our existing workforce. You are the giant slayers who have shaped Littlefish into the business it is today—and now, we’re looking for the next wave of internal trailblazers to help us take things even further.

We’re seeking individuals who embrace change with optimism, who think beyond the obvious, and who bring energy, curiosity, and collaboration to everything they do. Whether you're looking to stretch your skills, take on a new challenge, or explore a fresh direction, this is your opportunity to make an impact from within.

So, if this opportunity sparks your interest and you’re excited by the idea of working alongside passionate, creative, and friendly colleagues apply today.

The role and what you’ll be getting up to on a day-to-day basis:

At Littlefish, we’re committed to strengthening our cyber capability and ensuring our customers remain protected in an ever‑evolving threat landscape. To support that mission, we’re looking for a Cyber Security Engineer who brings curiosity, technical depth, and a genuine drive to make a meaningful impact across our Cyber Services division.

If you’re someone who thrives on digging into complex security challenges, shaping the tooling that underpins our SOC, and turning advanced concepts into clear, workable solutions for both colleagues and customers, this is an exciting opportunity to play a key role in our continued growth.

You will:

This is a dual‑focused role within our Cyber Services Division, giving you the chance to lead technically while delivering impactful, customer‑facing security work. Your responsibilities include:

• Taking technical ownership of SOC tooling — especially the SIEM platform.
• Implementing SIEM solutions for customers, including tuning data feeds and supporting early life operation.
• Collaborating closely with the SOC to maintain and improve rulesets and use cases.
• Providing expert cyber thought leadership, guidance, and technical advice to selected customers.
• Supporting major security incidents with calm, senior‑level expertise.
• Delivering cyber‑led project engagements, either independently or as part of wider Professional Services projects.
• Keeping pace with emerging security controls and technologies, helping shape our future tooling roadmap.
• Ensuring compliance with ISO9001 and ISO27001, and championing Equality, Diversity & Inclusion across all work.

What you bring:

You’ll be a great fit if you have:

• A strong understanding of SIEM tools and concepts.
• Experience administering O365, M365 and Azure, with a focus on security features.
• PowerShell scripting skills.
• Good knowledge of attacker tactics, techniques, and procedures (TTPs).
• Experience managing security controls such as firewalls, IDS, WAFs and network segmentation.
• Broad technical grounding across Windows, Networking, IAM, monitoring/logging, antivirus, and zero‑touch architectures.
• Excellent communication skills, with the ability to explain technical concepts clearly to different audiences.
• Confidence translating policy and regulation into practical, secure technical solutions.
• Experience producing security‑focused design documents and diagrams.

What can we offer you?

• 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 LinkedIn 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 

Life at Littlefish: 

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.

I am High Performing- I like to raise the bar, we look at creating opportunities to increase quality and improve efficiency, we strive for service excellence.

I am Passionate- We build team success and celebrate them together, I am enthusiastic and energetic, I care about the people I work with and we support one another.

I Have a Can-Do Attitude- I am not afraid to step outside my comfort zone, we are not afraid to challenge status quo, we get stuff done!

So, if you feel like you can make a tangible difference, apply today, and join us on this journey.

Here at Littlefish we aim to be somewhere everyone can be themselves. We are committed to encouraging a diverse and inclusive community where everyone irrespective of who they are, or their background, can feel equal and supported.

We encourage applications from people of all backgrounds. Please get in touch if you are concerned about any difficulties you may face during your recruitment process, so we adjust accordingly.

Part of our application process includes a set of ED&I (Equality, diversity and inclusion) questions. Please note, each question has a ‘prefer not to say ‘option).