As part of the Security team, you will help to define and own the security design of our applications, APIs, and supporting platforms. Sitting within the Application Security team, you will translate the organisation risk appetite into clear, actionable architectural patterns that engineering teams can build to, ensuring security is a foundational consideration rather than an afterthought. You will also bring a dedicated security architecture focus to our Crypto division, helping shape secure design patterns for digital asset products in a fast-evolving regulatory landscape. You will serve as the senior technical authority on application security architecture, working closely with engineers, product managers, and senior stakeholders to drive secure-by-design principles across the product portfolio.

As our Security Architect, your key responsibilities include, but may not be limited to:

Define and own the application security architecture vision, standards, and reference patterns across web, mobile, API, and cloud-hosted application surfaces.
Provide architectural guidance and security assurance on new products, major feature delivery, and significant changes to existing systems, including addressing risks specific to Crypto digital asset custody, wallet infrastructure, exchange connectivity, and blockchain integrations.
Conduct security architecture reviews and threat modelling for new and existing applications, identifying risks and recommending mitigating controls.
Develop and maintain security design patterns, guardrails, and secure-by-default frameworks that engineering teams can adopt within the SDLC.
Lead the evaluation and selection of application security technologies and tooling, ensuring alignment with the team's architectural principles and business needs.
Partner with Cloud and Infrastructure teams to ensure application deployment architectures meet security requirements across AWS, Azure, and hybrid environments.
Collaborate with Risk & Compliance to align application security architecture with regulatory obligations including DORA, PCI DSS, ISO and SOC.
Represent the Application Security team in cross-functional architecture forums and technology governance bodies.

About You

8+ years of progressive experience in information security, with at least 3 years in a security architecture or principal/staff security engineering role.
Deep expertise in application security architecture across web, mobile, API, and microservices domains including prior experience securing cryptocurrency, blockchain, or digital asset platforms (e.g. wallet security, custody solutions, exchange/DeFi integrations).
Strong working knowledge of common vulnerability classes, OWASP Top 10, and application-layer attack patterns as well as blockchain-specific threat vectors (smart contract risk, key management, on-chain/off-chain attack surfaces) and common mitigations.
Demonstrated experience designing secure architectures for cloud-native and hybrid environments (AWS, Azure, or GCP).
Proficiency in threat modelling methodologies such as STRIDE, PASTA, or MITRE ATT&CK, with the ability to lead sessions with engineering teams.
Experience working in or with regulated financial services organisations and familiarity with frameworks such as DORA, PCI-DSS, ISO and SOC.
Excellent communication skills; able to translate complex security design decisions into clear guidance for engineers and risk-based recommendations for senior leadership.
Relevant certifications such as CISSP, CSSLP, OSCP, CCSP, or AWS/Azure Security is a plus.
Hands-on background in software engineering or development is strongly advantageous.
Fluency in English.
Committed to ongoing learning and development.

Product Security Architect