Software Engineer II, Message Mailflow

About the Role Abnormal AI is seeking a Software Engineer to join the Message Mailflow team. The Message Mailflow team is responsible for building and maintaining stable, efficient, and hands-off systems that power the ingestion of billions of emails per day. Our systems are the backbone of Abnormal's core Inbound Email Security product—handling everything from upstream mailbox monitoring and email notifications to downstream remediation actions on malicious messages. The Message Mailflow team develops and manages tier 0 backend services that are mission-critical to Abnormal's success, including but not limited to Subscription Manager (which mailboxes we monitor), Notification Producer (processing new email notifications from providers), and Remediation (executing actions on malicious messages). This is a backend and systems-heavy team, and the ideal candidate will have experience working with distributed systems at scale and a passion for operational excellence. The ideal candidate has strong backend and distributed systems experience, a deep appreciation for email infrastructure, and the ability to thrive in a fast-moving 0-to-1 build environment. What You Will Do Design & execute software projects that are critical to Abnormal's core product, working with a team of engineers through conception, design, implementation, launch, and operation Own and improve the stability, performance, and scalability of tier 0 backend services that process billions of emails daily Collaborate with teams across R&D including Detection, Products, and Infrastructure to ensure Message Mailflow services meet the needs of the broader organization Participate in oncall rotations to maintain the reliability and uptime of mission-critical systems Drive continuous improvement by identifying opportunities to enhance system efficiency, reduce operational overhead, and increase reliability Raise the bar of engineering excellence, actively contributing to knowledge sharing within the team and participating in professional development activities Must Haves BS degree in Computer Science, Applied Sciences, Information Systems or other related engineering field 3+ years of industry experience on backend software development & distributed systems, designing & building software applications Experience with our stack: Go and/or Python Experience working with distributed teams, proficient in asynchronous and written communication Experience building features & components from scratch and operating them, balancing feature development work with operational tasks Open to following pre-established guidelines, coding practices, and conventions You’re growth-driven & looking to increase impact & responsibility over time Nice to Have Experience with our stack: AWS, K8, Django, Spark, Prometheus Familiarity with AWS services and deployment practices. Knowledge of containerization using Docker or similar technologies. #LI-PP1 Actual compensation will be determined based on several non-discriminatory factors including skills, experience, qualifications, and geographic location. In addition to base salary, this role may be eligible for bonus or incentive compensation, equity, and a comprehensive benefits package. Base salary range: $149,200 — $214,500 USD AI and our hiring process Abnormal AI uses AI-assisted tools to help our recruiting team prepare for candidate interviews. These tools analyze resume content and role requirements to suggest interview questions and identify areas for the interviewer to explore. They do not make hiring decisions or screen candidates automatically. Every decision about a candidacy is made by a person. Abnormal AI is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status or other characteristics protected by law. For our EEO policy statement please click here . If you would like more information on your EEO rights under the law, please click here .