Security Engineer I

Tesco UK; Welwyn Garden City; Hybrid; GBP 35,000 - 50,000; Full time

Job summary

A leading grocery retailer in the UK is seeking a Junior Cyber Security Detection Engineer to improve detection capabilities and support operational teams. You will work in a fast-paced environment, ensuring that relevant detections and alerts are effective. The ideal candidate has knowledge of detection technologies and an analytical approach to cyber security. This role offers a blended working pattern.

Benefits

Inclusive workplace culture

Flexible working patterns

Qualifications

• Ability to develop queries for robust threat detection.
• Experience with Windows, macOS, or Linux operating systems.
• Interest and passion for cyber security.

Responsibilities

• Contribute to the cyber security detection capability both day-to-day and strategically.
• Ensure relevant alerts and detection capabilities fit operational needs.
• Support during cyber security incidents and participate in threat hunts.

Skills

Threat assessment and validation

Secure & Test-Driven Engineering

Research capabilities for detection

Analytical approach to problem-solving

Knowledge of detection technologies (SIEM, EDR)

Tools

Version control systems (e.g., GitHub)

Query languages (KQL, SPL, SQL)

Job description

As a Junior Cyber Security Detection Engineer, you will contribute to the continuous improvement of Tesco's cyber security detection capability. You will be required to understand the changing threat landscape, see opportunities for improvement in existing detections, contribute to the detection lifecycle process, and ensure appropriate detection coverage for the organisation. You will work alongside multiple teams within the Cyber Defence Function, including supporting other Detection Engineers in a fast paced and agile environment.

Responsible for contributing to the cyber security detection capability both day-to-day and strategically for the Tesco Group. You are expected to seek out effective and comprehensive detection logic and capability, ensuring detections are robust and not brittle.

You are expected to put the needs of operational teams and incident responders at the centre of your work, ensuring detections and alerts are relevant, of value, and have practical response steps as part of our Detection Review & Tuning processes. You will need to ensure detection capability is fit for both on-premises, private and public cloud environments, working at significant scale, and across a diverse range of asset types.

In addition, you may provide support during cyber security incidents, participate in threat hunts, and work with other security teams to deliver automation and standardisation to improve efficiency and response.

Security Engineering Skills

• Threat Led: Ability to assess and validate information from various sources on cyber and informational security threats to business; Ability to break down and translate information into tangible actionable data.
• Secure & Test-Driven Engineering: Aware of cyber security threat frameworks such as MITRE ATT&CK, Lockheed Martin Killchain etc.; Ability to specify/implement processes to maintain required level of security for a component/product/system during its lifecycle; Contribute to security evaluation of threat/vulnerabilities faced by systems; Applies recognised evaluation/testing methodologies, tools and techniques to existing detection content reviews, suggesting improvements where appropriate.
• Research: Ability to quantify and define research goals to generate worthwhile relevant detection ideas for further testing and exploration; Ability to summarise findings or technical information to be disseminated with wider teams, factoring in business knowledge and the audience.
• Experience relevant for this role: An ability to develop queries and enable robust detection of threats; Working knowledge of Windows, macOS or Linux operating systems; Ability to work independently as well as part of a team; Awareness of modern attacker TTPs; Translate threat intelligence into actionable searches & recommendations; A broad understanding of detection technologies such as SIEM, EDR, etc; A broad understanding of security concepts; an interest and passion for cyber security; An analytical approach; ability in problem solving and comfortable working on production systems at scale; Query languages such as KQL, SPL, SQL, etc.

Desirable Skills and Experience

• Knowledge of cloud infrastructure, cloud security and cloud APIs a plus.
• Knowledge of attacker tools and evasion techniques within offensive engineering.
• Working knowledge of at least one major programming language, including scripting languages like Python and PowerShell.
• Experience of developing detections.
• Experience of using version control systems (e.g. Github) for code maintenance.

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.