Security Engineer (Web Application Firewall)

Lloyds; Manchester; On-site; GBP 80,000 - 100,000; Full time

Benefits offered by this job

Health insurance

Pension

Share plans

Flexible working

Annual leave or holiday allowance

Job summary

Lloyds is seeking a senior engineer to design, implement and evolve our Web Application Firewall (WAF) platforms, protecting customer-facing services at scale. You will automate and secure our edge, data centre and cloud environments, influencing technical direction and engineering standards across teams.

The role emphasizes design of WAF controls, policy-as-code, and observability, with on-call responsibility and ownership of platform reliability, security and runbook documentation.

Qualifications

• Experience in Application Security, API Security, Bot Protection, and Layer 7 DDoS mitigation.
• Strong automation and scripting skills with practical IaC and CI/CD experience.
• Proven ability to influence engineering decisions and set security patterns.

Responsibilities

• Design, implement and continuously optimise WAF security controls and policies.
• Develop WAF capabilities using Infrastructure-as-Code, CI/CD pipelines and policy-as-code.
• Refactor and automate to reduce technical debt and improve platform resilience.
• Improve monitoring, telemetry and incident response for edge, data centre and cloud environments.
• Participate in on-call rotations and contribute to secure-by-design safeguards.

Skills

Python

Automation

Scripting

CI/CD

Tools

Terraform

Job description

• 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
• 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

Benefits

• A generous holiday allowance: You’ll be eligible for a minimum of 22 days holiday (excluding bank holidays), rising to 30 days based on length of service and grade.
• A flexible way of working: Whether you want flexibility over your location or when you log on, together we can create an approach that works for you and for the business.
• Family leave: Up to 63 weeks of maternity or adoption leave. Statutory maternity or adoption pay is available for 39 weeks, and 20 weeks will be enhanced to the equivalent of full pay. Partners can have six weeks of fully paid paternity leave.
• Flex cash: This is 4% of your basic salary and can be used to spend on the benefits of your choice, or you can choose to take it as a cash top up in your monthly salary.
• Health insurance: Our company funded Private Medical Benefit provides all colleagues with access to good quality medical care, including accommodation, nursing care and specialist advice.
• Colleague Offers: Get discounts on everything from electrical items to cinema tickets and weekly food shopping. You can share this benefit with up to ten family members or friends.
• Financial products: Take advantage of our great financial products, some at a discounted rate, including current accounts, home and car insurance and loans.
• Share plans: Participate in Sharematch and receive matching shares of up to £45 a month from the company, and you can choose to participate in Sharesave, our combined savings and share option plan.
• Pension: We offer a generous pension plan, with all joiners being automatically enrolled in our ‘Your Tomorrow’ scheme. You can decide how much you save and get a say in where your contributions are invested.

Ability to contribute to complex technical investigations, diagnose issues under pressure and develop robust solutionsExperience in any of the following: Application Security, API Security, Bot Protection, and Layer 7 DDoS mitigationWe 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 applyConfidence to influence engineering decisions and contribute to the team’s technical directionSolid understanding of networking and web fundamentals, including HTTP/S, DNS, TLS and platform security conceptsStrong automation and scripting skills (Python preferred), with practical experience using Infrastructure‑as‑Code tools (Terraform preferred) and modern CI/CD pipelinesA strong engineering mindset, with hands‑on experience of edge, on‑premises or cloud‑native WAF technologiesProfessional‑level cloud certifications and/or recognised security or network engineering accreditationsInterest in or experience with developing AI solutions to augment security solutionsDemonstrable experience with Cloud‑based data warehouse technologies