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Sr. Software Engineer (Decision Pipeline) - [Remote in US or CAN] - Abnormal Security

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Job Title
Sr. Software Engineer (Decision Pipeline) - [Remote in US or CAN]
Job Location
Remote - USA
Job Description

About Abnormal Security

Users and companies are constantly under attack but Abnormal Security’s team and patented, ML-first approach is redefining email security for the next generation. Our incredible team needs your help to keep ahead of the evolving threats facing the world. We tackle critical challenges using novel approaches and modern technologies that help make the world a safer place.

Call us Abnormal, but tackling impossible problems takes partnership with customers. By listening to what they want we can build them what they need to stop adversarial cybercrime. It also means our customers love what we build for them because it solves the problems that matter to them! And, of course, it is beautiful to look at and easy to use and administer!

But it’s not just our products; we are Abnormal too.

We’ve combined some of the best talent in the world with serially successful & passionate leadership, which gives us the ability to tackle complex challenges, build incredible things, and experiment and iterate quickly! Then, we empower our people to take ownership of complex end-to-end problems in a culture that supports and rewards them.

Come see what’s so great about being Abnormal!


Our “Detection Decision & Control” team is looking for a Senior Software Engineer to drive the design and implementation efforts for our next generation "Decision Pipeline". This critical systems ultimately provides the “attack/no-attack” determination for every single inbound customer message! 


In this role you will spend 60-70% of your time as a hands-on engineer. You will:

  • Work closely with the ML engineering team to integrate ML technology across the rest of the portfolio of Abnormal products
  • Design systems to enable coupling machine learning, rule-based systems, and business and product inputs into an email detection product
  • Build systems with an eye towards analytics and clarity
  • Consider testability & long-term flexibility when designing flow of logic within complex & evolving systems

Remaining time spent as a hand-on technical leader where you will:

  • Help to define team charter
  • Work cross functionally to align current & future technical roadmap to product vision. 
  • Empower ML engineers and data scientists to be effective


Team & Work Summary:

This Detection Decision & Control team (itself a sub-team of our core “Message Detection” team) serves the “attack/no-attack” decisions that both protect our customers AND provide the outputs utilized by teams across ML & Security. 

Our Detection Engineering team builds the systems that actually detect and mitigate complex, often socially-engineered and adversarial, email-based attacks that target our customers. Composed of a litany of big tech and security veterans alike, this team has created our completely novel and industry disruptive functionality that continues to exceed what customer’s even thought was possible from their email security provider.

To qualify, you’ll need: 

  • To live and work in the US or Canada 
  • A Bachelors or Masters in Computer Science (or similar)
  • Be comfortable working in production-quality systems using Python
  • Have at least 5 years of professional experience in building scalable, production systems 
  • Ability to design/architect & implement complex logic-driven systems 


Types of backgrounds that have found success in similar roles here at Abnormal: 

  • Engineers working on Search, Recommendation, or Ranking systems
  • AdTech Software Engineers building Ads Running or Serving systems
  • Engineers coming from similar teams in Fraud, Trust & Safety, or other related fields
  • Quant/FinTech Engineers building critical decision-driven systems 


Why Abnormal?

We’re on a serious mission to “protect the internet” and we’re adamant that building a great team will help us build a great product AND a great company! In addition to ensuring our compensation packages and benefits remain compelling to the caliber of talent we hire - we also seek to provide both clear career and personal growth opportunities. We’ve built a diverse and inclusive team that values the contributions and voice of all team members, which is why so many of us love working here. Let’s chat about our team and opportunities - we’d love to show you just how GREAT being “Abnormal” can be!

Abnormal Security Headquarters Location

San Francisco, CA

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Abnormal Security Company Size

Between 500 - 1,000 employees

Abnormal Security Founded Year


Abnormal Security Total Amount Raised


Abnormal Security Funding Rounds

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  • Series C

    $210,000,000 USD

  • Series B

    $50,000,000 USD

  • Series A

    $24,000,000 USD