Sr. Software Engineer

Belfast, Northern Ireland, GBRemoteFull-time2026-10-22 → 2026-11-10

Core

Designing distributed systems, solving scalability challenges, and building high-performance backend services operating at scale for the Threat Response product.

Role type

Senior IC backend software engineer (distributed systems)

Builds

High-performance backend services and distributed systems for threat response

Domain

Cybersecurity, SaaS, distributed systems

Required skills

Java, Python, PostgreSQL, distributed systems design, multi-tenant SaaS platforms, AI-assisted engineering tools, query optimization, performance tuning

Preferred skills

AWS cloud services, Kafka/SQS, system throughput optimization, Microsoft 365/Google Workspace integration, React/TypeScript

Technologies

Java, Python, PostgreSQL, Kafka, SQS, AWS, React, TypeScript, Microsoft 365, Google Workspace

Responsibilities

Design distributed systems, build high-performance backend services, optimize database scalability, leverage AI tools for engineering tasks

Seniority

Senior, hands-on IC

About Proofpoint

Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple: safeguard the digital world and empower people to work securely and confidently. Join us in our pursuit to defend data and protect people.