Quora seeks a Senior Infrastructure Security Software Engineer to join a new Security Engineering Team, working remotely from the US or Canada. The role focuses on securing large-scale cloud environments (especially AWS), building infrastructure-as-code pipelines (Terraform/CloudFormation), integrating security into CI/CD (SAST/DAST/dependency scanning), hardening OS/container environments (eBPF, OSQuery, SECCOMP), threat modeling, and participating in incident response. US- and Canada-specific salary ranges are provided in the posting.

Work on detection and corporate security for Quora and Poe: build and maintain SIEM, write detections, deploy canary tokens, investigate incidents (malware analysis, exfiltration, timelines), create runbooks, and partner with IT on endpoint and identity controls. Requires 5+ years in security/detection engineering, hands-on SIEM experience, endpoint/EDR experience, strong Python skills, and incident response experience. Remote-first role available in the United States and Canada; US and Canada salary ranges provided in the posting.

Quora is hiring a Machine Learning Tech Lead to work on feed personalization and recommendation systems for the Quora product. The role requires end-to-end ownership of ML systems (data pipelines, candidate extraction, feature engineering, model training, production integration), 7+ years of ML software development experience, and 4+ years building home feed recommendation systems. Remote role with coordination hours Mon-Fri 9am–3pm Pacific Time.

Quora is hiring a remote Staff Machine Learning Engineer to work on recommendation systems (feed, notifications, digest emails, A2A) for the Quora product. The role requires taking end-to-end ownership of ML systems (data pipelines, candidate extraction, feature engineering, model training, production integration) and collaborating with other engineers. Minimum requirements include 5+ years professional software development experience in ML and 3+ years working on recommendation systems; US salary range provided: $219,989 - $320,613 USD per year.

Quora is hiring a Senior Machine Learning Engineer (remote) for its distribution team to improve ranking models and recommendation systems (feed, notifications, digest emails, A2A). Responsibilities include end-to-end ownership of ML systems (data pipelines, candidate extraction, feature engineering, model training, production integration). Minimum: 3+ years working on recommendation models, strong ML mathematical foundations, and experience building end-to-end ML systems. Coordination hours are Mon–Fri 9am–3pm PT. US applicants: salary range listed as $189,507–$274,603 USD per year.