Senior Backend Engineer – Scalable SaaS & AI Security

Company: Proofpoint
Apply for the Senior Backend Engineer – Scalable SaaS & AI Security
Location: Northern Ireland
Job Description:

Proofpoint is seeking a highly motivated Sr. Software Engineer to join the Threat Response product engineering team. You will design distributed systems, tackle scalability challenges, and build high-performance backend services operating at scale.

Key requirements include extensive enterprise/SaaS development, strong Java/Python skills, and experience with multi-tenant architectures, PostgreSQL, and modern cloud tools. This role emphasizes AI-assisted tooling and collaboration across teams.

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Posted: October 25th, 2026