Backend Security Engineer II: ML-Powered Detection

Abnormal AI; United States; On-site; USD 149,000 - 215,000; Full time

Job summary

Abnormal AI is seeking a Software Engineer II to build customer-facing security features and the supporting systems. You will collaborate with ML Engineers, Data Scientists, and fellow engineers to turn new approaches into reliable production software for email security.

You will develop backend services and data pipelines, integrate ML models and AI agents, and own features from design through release while maintaining performance and cost goals in a fast-evolving threat landscape.

Qualifications

• A bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related field.
• At least 2 years of experience in software design and development.
• Experience with backend services or data-intensive applications where reliability and performance matter.
• Strong programming skills in a general-purpose language and knowledge of data structures and software design.
• Experience with automated tests and diagnosis of production issues through logs and metrics.
• Ability to turn a product requirement into a practical design and deliver it with guidance on larger technical decisions.
• Clear technical communication and effective collaboration with other engineers.

Responsibilities

• Build backend services and data pipelines for customer-facing security features.
• Integrate machine learning models and large language models into detection and investigation workflows.
• Develop AI agents that analyze suspicious activity and support security investigations.
• Build tools that make model training repeatable, agent-driven, and help engineers evaluate AI systems.
• Evaluate changes against real attack patterns and investigate missed attacks and false positives.
• Improve system reliability and performance within latency and cost limits.
• Write tested, readable code and contribute to technical designs and code reviews.
• Own well-defined features from design through release and monitor their behavior in production.

Skills

Backend design

Programming skills

Automated tests

Technical communication

Collaboration

Education

Bachelor's degree in CS/Software Eng

Tools

Python

Go

Data pipelines tooling

Job description

Abnormal AI is seeking a Software Engineer II to build customer-facing security features and the supporting systems. You will collaborate with ML Engineers, Data Scientists, and fellow engineers to turn new approaches into reliable production software for email security.

You will develop backend services and data pipelines, integrate ML models and AI agents, and own features from design through release while maintaining performance and cost goals in a fast-evolving threat landscape.