Senior Security Engineer

Job description Are you an experienced Security Engineer who prefers building real security solutions over managing compliance on paper? Do you thrive in high-autonomy environments where custom AI agents, automation, and modern tech stacks are part of everyday operations? On behalf of our client—a global audio-tech pioneer scaling out of Stockholm—we are looking for a Senior Security Engineer. Our client powers millions of content creators and streaming platforms worldwide with sound and music. They operate with a true "startup mentality at scale": low bureaucracy, fast execution, high engineering autonomy, and an ethos of taking what they do seriously—without taking themselves too seriously. If you want to shape how an industry leader builds securely at scale, this is your stage.  Responsibilities As a Senior Security Engineer, you won't just manage risk—you will actively build tools, shape security architecture, and protect the company across three connected surfaces: the products millions of customers use, the platform internal engineers build on, and the systems employees rely on every day. Sitting within the Business Tech Division and reporting directly to the Head of Security, you will treat security code as production-grade software. Building custom AI agents, automating security workflows, and hardening cloud infrastructure is a core part of how the team operates. What you will be doing: Security Automation & AI: Build production-grade security tools, automations, and custom AI agents (using Python, Go, or Bash) that engineers and the wider business rely on daily. Evaluate emerging AI models against security standards. Cloud & Platform Hardening: Harden and secure the GCP estate, Kubernetes platforms, Docker environments, and CI/CD pipelines that engineering teams depend on. AppSec & DevSecOps Partnership: Partner directly with software engineers to embed security into the SDLC through threat modeling, pre-ship input, and code reviews (using tools like Snyk and Port). Vulnerability Management & SIEM: Own the vulnerability management programme across cloud, product, and enterprise environments. Operate and tune Elastic SIEM, building new detections as the threat landscape evolves. Incident Response & Reviews: Respond to security incidents (including on-call), run team readiness exercises, perform vendor security reviews, and handle enterprise customer questionnaires. Application Ready to help build a secure digital environment for the future of audio tech? Please submit your application in English. For this key recruitment, our client is partnering with Randstad Digital. If you have any questions about the position or the process, please feel free to reach out to Tova Cullbrand, Talent Manager at Randstad Digital.  Qualifications We are looking for a pragmatic, hands-on engineer with a generalist mindset who loves solving complex security problems through code and automation. You value psychological safety, st…