Software Engineer II, Message Mailflow

Menlo Ventures; United States; On-site; USD 149,200 - 214,500; Full time

Job summary

Abnormal AI is seeking a Software Engineer for the Message Mailflow team to build and maintain stable, scalable backend services powering the ingestion of billions of emails daily.

The role focuses on tier 0 backends, distributed systems at scale, and daily operations, with collaboration across Detection, Products, and Infrastructure. On-call rotations and ongoing improvements are expected, along with growth in responsibility.

Qualifications

• BS degree in Computer Science, Applied Sciences, Information Systems or related engineering field.
• 3+ years of backend software development and distributed systems experience.
• Experience with Go and/or Python in production environments.
• Experience with asynchronous and written communication within distributed teams.
• Experience building features from scratch and operating them in production.
• Willingness to follow established coding practices and conventions.
• Growth mindset with increasing impact and responsibility over time.

Responsibilities

• Design and execute software projects critical to Abnormal's core product from conception to operation.
• Own and improve stability, performance, and scalability of tier 0 backend services processing billions of emails daily.
• Collaborate with R&D teams across Detection, Products, and Infrastructure to meet organizational needs.
• Participate in on-call rotations to maintain reliability of mission-critical systems.
• Drive continuous improvement to reduce operational overhead and increase efficiency.
• Contribute to engineering excellence and knowledge sharing within the team.

Skills

Go

Python

Distributed systems

Backend development

Asynchronous communication

Team collaboration

Education

BS in CS/Applied Sciences/IS/related engineering

Tools

AWS

K8s

Django

Spark

Prometheus

Docker

Job description

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.