WAF Security Engineer

You’ll be a key engineer responsible for designing, implementing, evolving and maintaining our Web Application Firewall (WAF) platforms, protecting critical customer-facing services at scale.

You’ll use modern engineering practices, including automation and secure-by-default design, to improve the resilience, performance and security of our edge, data centre and cloud environments. The role offers real scope to influence technical direction, raise engineering standards, and develop our WAF and wider Layer 7 security services.

Day to day, you’ll work with a high degree of autonomy and contribute technical influence across the team. Your responsibilities will include:

• Design, implement and continuously optimise WAF security controls, developing and tuning rules and policies to improve protection against emerging threats while minimising false positives and maintaining a seamless customer experience.
• Engineer new WAF capabilities using Infrastructure as Code, CI/CD pipelines and policy-as-code approaches to deliver secure, repeatable and scalable outcomes.
• Playing a key role in platform modernisation and service improvements, including refactoring, automation and the reduction of technical debt
• Driving observability and operational insight by improving monitoring, alerting and telemetry to strengthen platform reliability and incident response
• Support the diagnosis and resolution of major incidents, partnering closely with Security Engineering, Network and Cloud teams.
• Embed secure-by-design patterns and guardrails, ensuring controls are codified, consistent and easy for platform consumers to adopt.
• Produce high-quality engineering documentation, including standards, patterns, platform guidance and runbooks, to enable self-service and repeatable delivery.
• Participate in the on-call rota, helping to maintain the operational resilience of critical services, with additional compensation provided.

Why Join us?

If you think all banks are the same, you’re wrong. We’re a pioneering, fast-changing business that’s shaping finance as a force for good. If you’re after a role where you can have an impact and do the best work of your career, you’ve just found it

In this role, you’ll have the chance to:

• Shape the future of WAF and Web Application Security capabilities across Lloyds Banking Group.
• Contribute to engineering standards, patterns and guardrails used across multiple teams and platforms.
• Work alongside highly skilled engineers in a culture that values modern engineering, automation and continuous improvement.
• Continue to develop your knowledge in Layer 7 controls and modern engineering practices., Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities, and we’re committed to creating an environment in which everyone can thrive, learn and develop.

• A strong engineering mindset, with hands-on experience of edge, on-premises or cloud-native WAF technologies.

• Solid understanding of networking and web fundamentals, including HTTP/S, DNS, TLS and platform security concepts.

• Experience in any of the following: Application Security, API Security, Bot Protection, and Layer 7 DDoS mitigation.

• Strong automation and scripting skills (Python preferred), with practical experience using Infrastructure-as-Code tools (Terraform preferred) and modern CI/CD pipelines.
• Ability to contribute to complex technical investigations, diagnose issues under pressure and develop robust solutions.
• Confidence to influence engineering decisions and contribute to the team’s technical direction.

And any experience of these would be great…

• Professional-level cloud certifications and/or recognised security or network engineering accreditations.
• Demonstrable experience with Cloud-based data warehouse technologies.
• Interest in or experience with developing AI solutions to augment security solutions.

We know that great talent comes from many backgrounds. Whilst this job advert may reference specific years of experience, we recognise that skills are developed in many ways, so if you have relevant, transferable experience, we encourage you to apply.

We were one of the first major organisations to set goals on diversity in senior roles, create a menopause health package, and a dedicated Working with Cancer Initiative.

We offer reasonable workplace adjustments for colleagues with disabilities, including flexibility in office attendance, location and working patterns. And, as a Disability Confident Leader, we guarantee interviews for a fair and proportionate number of applicants who meet the minimum criteria for the role with a disability, long-term health or neurodivergent condition through the Disability Confident Scheme.

We provide reasonable adjustments throughout the recruitment process to reduce or remove barriers. Just let us know what you need.

We also offer a wide-ranging benefits package, which includes…

• A generous pension contribution of up to 15%
• An annual bonus award, subject to Group performance
• Share schemes including free shares
• Benefits you can adapt to your lifestyle, such as discounted shopping
• 28 days’ holiday, with bank holidays on top
• A range of wellbeing initiatives and generous parental leave policies