Staff Software Engineer - Detection Serving & Signals

Sorry, this job was removed at 10:27 p.m. (CST) on Friday, Aug 15, 2025
Hiring Remotely in USA
Remote
210K-247K Annually
Security • Cybersecurity
The Role
About the Role

Abnormal Security is seeking a Staff Backend Software Engineer to join our Detection Team. The Detection Division is at the forefront of developing cutting-edge technology to identify and thwart sophisticated email and cloud-based attacks that were previously undetectable, contributing to a safer digital world. As a Staff Software Backend Engineer focusing on the Detection's Serving Platform, you will be instrumental in scaling and optimizing our high-throughput, low-latency scoring infrastructure to ensure a fast, responsive, stable, and reliable experience for our customers .

The ideal candidate will possess:

  • A proven track record of scaling high-throughput, low-latency model scoring infrastructure
  • Experience in maintaining 99.99% uptime for services handling 50k+ QPS
  • A first-principles approach to architecting scalable, customer-centric solutions
  • A passion for solving complex, real-world problems with pragmatic solutions
  • Strong ownership mentality and impact-driven outlook on efforts and growth
  • Ability to iterate rapidly and autonomously on novel challenges
  • Experience with performance engineering - in identifying and resolving bottlenecks in systems and improving the performance in an iterative way
Key Responsibilities
  • Lead the architecture, design, and implementation of highly scalable backend services and infrastructure supporting our world-class Detection Engine
  • Spearhead critical projects to meet ambitious goals, such as scaling components of Detection's Scoring Pipeline by 10x while maintaining or improving performance
  • Collaborate closely with ML Engineering teams to gather requirements, provide technical leadership, and drive execution of infrastructure improvements
  • Mentor and coach junior engineers through 1-on-1s, pair programming, and high-quality code and design reviews
  • Continuously optimize system performance, reliability, and efficiency to meet growing demand and evolving threat landscape
Requirements
  • 8+ years of professional experience as a hands-on engineer building and scaling data-intensive products
  • Extensive experience with real-time, online, high-throughput & low-latency distributed systems
  • Proven ability to maintain 99.99% uptime for services handling 50k+ QPS
  • Strong track record of cross-functional collaboration and driving complex projects to completion
  • Demonstrated leadership in setting and maintaining high standards for project execution and code quality
  • Experience in fast-paced or start-up like environment
  • Experience with cloud-native architectures and microservices
  • Experience with event-driven architecture such as Kafka, Pub/Sub, etc.
Preferred Qualifications
  • Familiarity with ML systems/products and distributed system technologies (e.g., Python, Golang, Kafka, Redis, Docker, Kubernetes, feature serving platforms, ML training and serving infrastructures)
  • Hands-on experience optimizing high-throughput online systems
  • MS or PhD in Computer Science, Electrical Engineering, or a related field
  • Familiarity with the cybersecurity industry or fraud detection and its unique challenges

#LI-ML1

At Abnormal AI, certain roles are eligible for a bonus, restricted stock units (RSUs), and benefits. Individual compensation packages are based on factors unique to each candidate, including their skills, experience, qualifications and other job-related reasons. We know that benefits are also an important piece of your total compensation package. Learn more about our Compensation and Equity Philosophy on our Benefits & Perks page.

Base salary range:
$209,800$246,800 USD

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.

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The Company
San Francisco, CA
175 Employees
Year Founded: 2018

What We Do

The Abnormal Security platform protects enterprises from targeted email attacks. Abnormal Behavior Technology (ABX) models the identity of both employees and external senders, profiles relationships and analyzes email content to stop attacks that lead to account takeover, financial damage and organizational mistrust. Though one-click, API-based Office 365 and G Suite integration, Abnormal sets up in minutes and does not disrupt email flow.
Abnormal Security was founded in 2018 by CEO Evan Reiser, CTO Sanjay Jeyakumar, Head of Machine Learning Jeshua Bratman, and Founding Engineers Abhijit Bagri and Dmitry Chechik. The team previously built behavioral profiling and machine learning technologies at Twitter, Google and Pinterest that are being applied to solve a problem that costs organizations $1 billion per year, according to the FBI. The Abnormal Security platform stops targeted phishing, business email compromise and account takeover attacks that have never been seen before.

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