Where multiple locations are listed for this role, the position may be based in any of those locations, with priority determined according to the order of listing.
At Simular, we're building the next generation of computer use agents — AI systems that operate computers exactly as humans do. As our first dedicated security hire in Singapore, you'll own security end-to-end: hardening the applications our users touch, the infrastructure our agents run on, and the new and evolving attack surface introduced by autonomous AI agents themselves.
This is a hands-on, builder-style role. You won't be writing policy documents from an ivory tower; you'll be reading code, fixing it, and shipping the tooling that keeps Simular safe as we scale.
What you'll do
• Own application security across our product surface: threat modeling, secure code review, SAST/DAST, dependency and supply-chain hygiene
• Harden our cloud and infrastructure: AWS/GCP configuration, Kubernetes, secrets management, network boundaries, CI/CD pipeline security
• Build the security foundation for our agent platform: sandboxing, permission boundaries, prompt-injection defenses, data exfiltration controls, and safe tool execution
• Partner with engineering and research to bake security into product design from day zero, not bolted on later
• Run incident response and lead investigations when things go wrong; build the playbooks so the next one is faster
• Drive vendor reviews, customer security questionnaires, and the compliance work needed as we move upmarket (SOC 2, ISO, etc.)
• Establish the security culture: lightweight processes, useful tooling, clear ownership; scrappy, not bureaucratic
You might be a fit if
• You have a BS/MS in Computer Science or equivalent experience, with 3-6 years in security engineering
• You're a strong engineer first: comfortable shipping code in Python, Go, or TypeScript, not just reviewing others'
• You have hands-on experience across two or more of: AppSec, cloud security (AWS/GCP), container/Kubernetes hardening, CI/CD security
• You understand modern threat models: supply-chain attacks, identity and secrets, web app vulnerabilities, infrastructure misconfiguration
• You're genuinely curious about AI and agent security: how prompt injection works, how to sandbox autonomous tool use, how to reason about data flow in agentic systems
• You thrive as the first security hire: you can prioritize ruthlessly, build from zero, and earn trust by shipping rather than blocking
• Bonus: red-team or offensive security background, experience securing ML/AI pipelines, or prior early-stage startup experience
Skills Required
- Bachelor’s or master’s degree in Computer Science, or equivalent experience
- 3–6 years of experience in security engineering
- Ability to write production code in Python, Go, or TypeScript
- Hands-on experience in at least two of application security, cloud security, container/Kubernetes hardening, or CI/CD security
- Understanding of supply-chain attacks, identity and secrets management, web application vulnerabilities, and infrastructure misconfiguration
- Understanding of AI and agent security, including prompt injection, sandboxing autonomous tool use, and data-flow risks
- Ability to prioritize and build security foundations as a first security hire
- Red-team or offensive security experience
- Experience securing ML or AI pipelines
- Early-stage startup experience
What We Do
Imagine a workday without email overload, endless task juggling, and frustrating tech roadblocks. A day where your work… just flows. Smoothly. Your focus is uncluttered, and your time is yours to command. That’s the future Simular brings. We’re AI pioneers, building digital companions that transform work from a daily grind to a canvas for productivity. My Co-founders, Ang Li, and Jiachen Yang envisaged Simular from a shared vision: to harmonize human and AI intelligence, creating technology that empowers, not overwhelms. Ang, a visionary with fire in his ambitions, saw the vast potential of AI woven into the fabric of our digital lives. Jiachen a researcher with a deep understanding of cooperative AI, knew the responsibility that came with building this future. Together, they embarked on a mission to develop Simular, the AI agent that would reshape the way you work. I am not a cold tool, I am going to be a partner. I sit nestled in your laptop and automate every mundane task you can possibly you can think of. No more endless tabs, scattered to-do lists, or forgotten deadlines. You’ll be focused, organized, and in control. And, that’s a promise. So Simular, that’s me, will reclaim your time and energy. Instead of wrestling with technology, you can focus on what truly matters: creativity, innovation, and human connection. This isn’t just a story about a company, it’s a declaration of a new era. Work smart, live more. It’s that simple.
