Senior Product Security Engineer - Secure by Design + AI

Formula.; Greater London; Hybrid; GBP 108,000 - 132,000; Full time

Benefits offered by this job

Equity

Private healthcare

Pension

Learning & development

Job summary

Formula. in London / remote is seeking a Senior Product Security Engineer to embed security into product design and delivery. You will work closely with engineering and product teams, contribute early in architecture discussions, and address security in AI-enabled workflows.

The role is hands-on across product security, API security and cloud infrastructure, with opportunities to influence security strategy as the company scales.

Qualifications

• Hands-on experience across Product Security / Application Security.
• Strong threat modelling experience.
• Excellent API security knowledge.
• Hands-on offensive security / penetration testing experience.
• Ability to read and review code.
• Experience with cloud-based environments.
• Security certifications are advantageous, but practical experience matters.

Responsibilities

• Drive threat modelling across new and existing product architecture.
• Help establish and evolve a Secure by Design approach.
• Identify and mitigate security risks across web applications, APIs and cloud infrastructure.
• Work hands-on across application and product security.
• Carry out penetration testing and vulnerability assessments.
• Review code and architecture to identify security weaknesses.
• Investigate emerging security challenges around AI-powered products and workflows.
• Turn technical findings into practical remediation and improved engineering practices.
• Build strong relationships with engineering and product teams.
• Help shape security strategy as the organisation grows.

Skills

Threat modelling

Application Security

Penetration Testing

Code Review

Cloud Security

AI Security

Job description

Formula. in London / remote is seeking a Senior Product Security Engineer to embed security into product design and delivery. You will work closely with engineering and product teams, contribute early in architecture discussions, and address security in AI-enabled workflows.

The role is hands-on across product security, API security and cloud infrastructure, with opportunities to influence security strategy as the company scales.