Senior Security Engineer

Are you an experienced Security Engineer who enjoys sharing knowledge as much as solving complex technical challenges? Would you like to use your expertise to mentor the next generation of security talent, partner with engineering teams, and help make security a natural part of how we design, build, and deliver technology? As a Senior Security Engineer at Thredd, you will become a security ambassador across the business — you will use your technical credibility, communication skills, and a collaborative approach to influence engineering decisions, share security best practices, and help teams embed security into everyday decision-making . This role will play a key part in building scalable security solutions, controls, guardrails, and security visibility across AWS platforms and development workflows. By embedding security into the way we build and operate technology, you will enable continuous assurance and resilience by design, strengthen collaboration between security and engineering teams, and help create a culture where security accelerates innovation rather than slows it down. What you’ll be doing as a Senior Security Engineer Embed security-by-design across all initiatives, ensuring client trust, regulatory alignment, and strong collaboration with IT, business, legal, and external stakeholders. Design secure-by-default cloud and platform architectures, implementing automated security and compliance controls using policy-as-code and infrastructure-as-code to improve reliability and reduce manual effort. Build and maintain robust security telemetry, dashboards, and reporting to support data-driven risk assessments, vulnerability prioritisation, audit readiness, and alignment with frameworks (e.g., SOC 2, ISO 27001, NIST, CIS). Plan and execute complex initiatives, enhance guardrails and validation mechanisms across environments, and drive measurable improvements in security posture, compliance maturity, and operational resilience. Shape engineering best practic