Principal Security Analyst - CSOC

Capital One
Nottingham

Nottingham Trent House (95002), United Kingdom, Nottingham, Nottinghamshire

Principal Security Analyst - CSOC

About this role

Capital One's mission is to change banking for good by bringing humanity, ingenuity and simplicity to banking. Sitting at the core of such values is our cyber security team, a team whose innate passion to safeguard allows Capital One to maintain the confidence of its customers while at the same time maintaining a strong market presence.

We are looking for a talented Cyber Security Analyst to join our Cyber Security Operations Center (CSOC) in Nottingham, UK. The Principal Security Analyst CSOC position will require a deep knowledge of network protocols and infrastructure, log investigation techniques, knowledge and understanding of cloud infrastructures, and incident handling experience. Not only will you need to know about the threats to networks, applications, cloud infrastructure, and theory regarding network protocols, but also the ability to proactively identify signs of misuse and abuse using various log sources.

The UK CSOC team is part of a 24/7 rotation that protects Capital One from Cyber threats .

What you’ll do

So, what do we expect from you?

We want you to help us defend our business and customers from Cyber related attacks. A typical day would be arriving at work and then reviewing a variety of alerts that may represent a Cyber threat. Your job will be to investigate, and using a keen eye for detail, figure out if there is any risk for Capital One associated with each one.

At the end of the day, if there is no risk, Great! If there is, you will use your skills (and a few more that we give you on the way!) to determine the best course to reducing or eliminating that risk.

Take a look at some of things that you will be getting involved in;

  • End-to-End Ownership: Head up complex investigations that require deep-dive analysis, from start to finish.

  • Proactive Hunting: You design and execute hunting hypotheses to uncover threats that bypass traditional detection.

  • Technical Mentorship: You act as a primary resource for our CSOC analysts, sharing your deep-seated domain knowledge to level up the team's collective skill set.

  • Continuous Improvement: You use your investigative insights to refine our processes and ensure our security tools are performing at their peak.

Now, is a great time to come and join Capital One - we are growing at speed and are looking for people to help us at every step of the journey.

What we’re looking for

  • Significant previous experience conducting Cyber Security investigations

  • In-depth knowledge and extensive hands-on experience working with SIEM technology such as Elastic, Splunk or similar

  • Considerable evidence of working with system, cloud, application and network logs

  • Vast proven ability at analysing and identifying network traffic

  • Substantial working experience with PCAP analysis

  • Comprehensive experience analysing workstation or server logs across multiple operating system platforms

Would be great if you had some of these too

  • Proven previous experience working in a Security Operations Center (SOC) for a significant duration of time

  • Comprehensive understanding of AWS architecture, services and API’s

  • In-depth forensic analysis experience (Endpoint, Memory, Malware)

  • Extensive Hands-on working experience evaluating and tuning alerts within a SIEM.

  • Significant ability to leverage core security, cloud, and infrastructure technologies during investigations

  • Demonstrative evidence of experience administering or investigating Mac OS, Linux OS

  • One or more of the following certifications ( CISSP, CISM, CCSP, Security+, CEH SANS GIAC 503/504/508/509, AWS Security)

  • Bachelor’s Degree in Information Technology, Cyber Security or Computer Science

Where and how you'll work

This is a permanent position based in our Nottingham office.

We have a hybrid working model which gives you flexibility to work from our offices and from home.

We’re big on collaboration and connection, so you’ll be based in our Nottingham office 3 days a week on Tuesdays, Wednesdays and Thursdays.

Many of our associates have flexible working arrangements, and we're open to talking about an arrangement that works for you.

What’s in it for you

  • Bring us all this - and you’ll be well rewarded with a role contributing to the roadmap of an organisation committed to transformation

  • We offer high performers strong and diverse career progression, investing heavily in developing great people through our Capital One University training programmes (and appropriate external providers)

  • Immediate access to our core benefits including pension scheme, bonus, generous holiday entitlement and private medical insurance – with flexible benefits available including season-ticket loans, cycle to work scheme and enhanced parental leave

  • Open-plan workspaces and accessible facilities designed to inspire and support you. Our Nottingham head-office has a fully-serviced gym, subsidised restaurant, mindfulness and music rooms. In London, you can heighten your mood with a run on our rooftop running track or an espresso at the Workshop Coffee café

What you should know about how we recruit

We pride ourselves on hiring the best people, not the same people. Building diverse and inclusive teams is the right thing to do and the smart thing to do. We want to work with top talent: whoever you are, whatever you look like, wherever you come from. We know it’s about what you do, not just what you say. That’s why we make our recruitment process fair and accessible. And we offer benefits that attract people at all ages and stages.

We also partner with organisations including the Women in Finance and Race At Work Charters, Stonewall and upReach to find people from every walk of life and help them thrive with us. We have a whole host of internal networks and support groups you could be involved in, to name a few:

  • REACH – Race Equality and Culture Heritage group focuses on representation, retention and engagement for associates from minority ethnic groups and allies

  • OutFront – to provide LGBTQ+ support for all associates

  • Mind Your Mind – signposting support and promoting positive mental wellbeing for all

  • Women in Tech – promoting an inclusive environment in tech

  • EmpowHER - network of female associates and allies focusing on developing future leaders, particularly for female talent in our industry

Capital One is committed to diversity in the workplace.

If you require a reasonable adjustment, please contact [email protected] All information will be kept confidential and will only be used for the purpose of applying a reasonable adjustment.

For technical support or questions about Capital One's recruiting process, please send an email to [email protected]

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

Who We Are

At Capital One, we're building a leading information-based technology company. Still founder-led by Chairman and Chief Executive Officer Richard Fairbank, Capital One is on a mission to help our customers succeed by bringing ingenuity, simplicity, and humanity to banking. We measure our efforts by the success our customers enjoy and the advocacy they exhibit. We are succeeding because they are succeeding.

Guided by our shared values, we thrive in an environment where collaboration and openness are valued. We believe that innovation is powered by perspective and that teamwork and respect for each other lead to superior results. We elevate each other and obsess about doing the right thing. Our associates serve with humility and a deep respect for their responsibility in helping our customers achieve their goals and realize their dreams. Together, we are on a quest to change banking for good.
Posted 2026-03-27

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