Principal Engineer, Cyber Defense (Cybersecurity)

TL;DR

Principal Engineer, Cyber Defense (Cybersecurity): Building hirify.global’s cyber defense capability from the ground up with an accent on security signals, detections, and automation at scale. Focus on designing security data pipelines, implementing detection-as-code, and applying AI-assisted defense to reduce analyst toil.

Location: UK

Company

hirify.global is a high-performance GPU cloud engineered to provide cost-effective infrastructure for AI startups and large enterprises.

What you will do

• Design and build the security data substrate, including log pipeline hardening, metadata enrichment, and lifecycle management.
• Engineer and mature detections from initial signals to high-confidence "clean kill" alerts using detection-as-code practices.
• Develop automation across triage, enrichment, investigation, and response workflows to reduce manual analyst effort.
• Apply AI and agentic approaches to security operations, focusing on precision, recall, and model risk.
• Set the technical direction for cyber defense engineering and define the future-state SOC model.
• Collaborate with Cloud and Platform Engineering teams to embed security into the platform and mentor other engineers.

Requirements

• 12+ years of experience in security engineering, detection engineering, threat hunting, or security operations.
• Hands-on experience building large-scale security data pipelines (ingestion, parsing, normalization, and quality control).
• Strong background in writing, testing, and tuning detections in production environments.
• Cloud-scale security experience across multiple major cloud providers or large SaaS environments.
• Engineering proficiency with object storage, serverless compute, databases, and infrastructure-as-code.
• Practical experience applying ML or AI to solve complex security problems.

Nice to have

• Experience building threat intelligence functions or MDR transition strategies.
• Background in forensics, incident response, red teaming, or adversary simulation.
• Open-source contributions to personal security tooling.

Culture & Benefits

• Highly competitive US-based compensation package including base, bonus, and equity.
• Opportunity to directly shape how global AI capacity is planned and deployed at a fast-growing company.
• Human-first flexibility with a workplace that trusts employees to shape their own schedules.
• Dynamic progression plan with support for leading critical cross-functional initiatives.