Senior Infrastructure Security Software Engineer (Remote)

[ Aperture Cloud is a privately held, "remote-first" company . This position can be performed remotely from anywhere in Canada or the United States. Please visit careers.quora.com/eligible-countries for details regarding employment eligibility by country.] About Aperture Cloud: Aperture Cloud’s mission is to grow the world's collective intelligence. To do so, we have two platforms: Aperture Cloud: a global knowledge sharing platform with over 300M monthly unique visitors, bringing people together to share insights on various topics and providing a unique platform to learn and connect with others. Poe: a platform providing millions of global users with one place to chat, explore and build with a wide variety of AI language models (bots), including Claude-Opus-4.7, Nano-Banana-2, GPT-Image-2, GPT-5.5, GPT-5.5-Pro, and more. As AI capabilities rapidly advance, Poe provides a single platform to instantly integrate and utilize these new models. Behind these products are passionate, collaborative, and high-performing global teams. We have a culture rooted in transparency, idea-sharing, and experimentation that allows us to celebrate success and grow together through meaningful work. Join us on this journey to create a positive impact and make a significant change in the world. This role will be supporting both our Aperture Cloud and Poe products. About the Team and Role: You will be a key member of the newly created Security Engineering Team, with a mission to keep Aperture Cloud safe from security problems by building robust protections around our products, infrastructure and people. Our small engineering team works on challenging problems every day. We have a culture that's rooted in constantly learning and improving, and our engineers are encouraged to think big and experiment with new ideas. What We're Looking For: Sweat The Right Details : you thrive in understanding the details but will also know to ruthlessly prioritize the critical issues. Right-Size The Solution : you recognize guidelines and framework do not always fit the problem and know how to adjust the solution for scalability not always at-scale. Ownership : you are outcome focused and can deftly navigate obstacles, decompose complexities, manage your time and can communicate your vision to peers and management. An Ideal Candidate Would… be a capable software engineer while also spiking in at least one of the following domain expertise: Cloud Infrastructure Security : You have hands-on experience securing large-scale cloud environments, particularly with AWS. You are passionate about building secure infrastructure-as-code (IaC) pipelines using tools like Terraform or CloudFormation. You understand IAM policies, network segmentation, and VPC design and have a thorough grasp of monitoring and logging in cloud-native environments. You are skilled in identifying misconfigurations, mitigating risks, and driving remediation processes. Bonus points if you've implemented security in Kubernetes clusters or serverless architectures. Automation and Secure Development Practices : You believe in "security as code" and are skilled at automating security processes. You can develop and integrate security tools into CI/CD pipelines to ensure secure code delivery. Tools like SAST, DAST, and dependency scanning are part of your daily toolkit, and you have experience integrating them into workflows to catch vulnerabilities early. You also advocate for secure coding practices and are skilled at mentoring teams to write resilient, secure applications. Linux/System Security : You are well versed in AWS infrastructure security but also are passionate about scalability, reliability and operational rigor. Beyond that, you know that root does not mean root and are passionate about container security, POSIX Capabilities, SECCOMP and have a favorite flavor of LSM. In your spare time, you love playing around with OSQuery and eBPF. Product Security (nice-to-have): Not a requirement, but a real plus: experience building secure web applications and APIs, with a working grasp of the OWASP Top 10 and common vulnerabilities such as XSS, CSRF, and SQL injection. It complements the infrastructure security focus of this role and helps when partnering with product teams. Responsibilities: Partner with engineering teams to review cloud and compute architecture design changes Establish threat models for cloud and compute paved roads to identify security risks Develop or adopt open-source tools to monitor and harden our cloud Infrastructure, harden our OS, develop security logging pipelines and detect intrusions Apply your expert knowledge of security best practices for AWS and Kubernetes to inform remediations and the team's control roadmap Drive the definition and implementation of security policies and monitor in conformance to the policies Write code for automations that support security requirements like threat detection, incident containment, and network access management. Conduct initial incident triage; determine scope, urgency