Product Security Engineer @Blockchain

Overview

The role of Product Security Engineer at Blockchain involves managing the Product Security program for the company's internally-developed products across various lines. It is a senior, hands-on position focused on integrating security in the development lifecycle to protect high transaction volumes.

Key Responsibilities

• Act as a senior security engineer, ensuring security integration from the design phase for major feature releases.
• Operate and improve the secure development lifecycle, including orchestrating SAST/SCA/DAST and streamlining vulnerability triage workflows.
• Research and embed AI utilities and Large Language Model (LLM) agents into secure development processes.
• Lead threat modeling and architecture reviews for sensitive flows.
• Translate technical risks into clear security policies and maintain Application Security Standards.
• Oversee the technical triage and remediation strategy for the Bug Bounty program.
• Conduct manual and automated code reviews, mentoring engineers on secure coding practices.
• Manage Security Debt negotiation and integration into engineering roadmaps.
• Define application runtime signals and work with SecOps for log instrumentation.
• Build and maintain product-level test harnesses to prevent regressions.
• Provide expertise in Incident Response, including test forensic runbooks.
• Define and own Product Security metrics, translating them into risk reports.
• Coach junior engineers and assist in defining hiring standards for the Product Security team.

Requirements

• 4+ years of security engineering experience, with at least 3+ years in application/product security.
• Experience with Web, Mobile, Cloud, and Infrastructure Pentests.
• Proven track record of shipping security automation using relevant tools.
• Expertise in auditing Kotlin/Java, TypeScript/JS, Python, and familiarity with containerized deployments.
• Strong threat modeling experience for financial flows.
• Excellent negotiation and stakeholder management skills.

Benefits

• Full-time salary based on experience with equity options.
• Work from anywhere for up to 20 days per year.
• Unlimited vacation policy.
• Apple equipment provided.
• Opportunities for career advancement in a global technology company.
• Flexible work culture.

Location

This role requires a mandatory in-office presence four days per week in London.

How to Apply

Interested candidates should apply through the company's career page.