Senior Security Engineer - AI-First Detection & Response

HackerOne; Greater London; Remote; GBP 100,000 - 110,000; Full time

Benefits offered by this job

Health insurance

Equity stock options

Retirement plans

Paid public holidays and unlimited PTO

Paid maternity and parental leave

Leaves of absence

Employee Assistance Program

Job summary

HackerOne is seeking a Senior Security Engineer, Detection and Response, to design and deliver detection and response capabilities for a cloud-native environment. You will write code, build AI-powered tooling, and automate workflows across the full detection lifecycle.

You will scale a small team by embedding automation, intelligence, and AI into detection, triage, and incident response, while expanding observability and embedding security into the development lifecycle.

Qualifications

• 5+ years of experience in detection and response, security engineering, or software engineering with a security focus.
• Strong software engineering fundamentals with proficiency in Python, Go, Ruby, or similar languages.
• Hands-on experience with cloud environments (AWS preferred), including services such as CloudTrail, GuardDuty, and VPC flow logs.
• Experience with log aggregation and analysis platforms (e.g., Datadog, Splunk, ELK) and endpoint detection tools (e.g., SentinelOne, CrowdStrike).
• Experience with containerized environments (Docker, Kubernetes, ECS/EKS) and threat intelligence/ATT&CK.
• Experience building AI/LLM-powered security tooling or applying AI to detection, triage, or investigation workflows

Responsibilities

• Design, build, and maintain detection-as-code capabilities across cloud infrastructure, SaaS applications, endpoints, and identity systems, improving coverage and signal quality through Data-Driven Decision Making
• Build automated investigation and response workflows that replace manual runbooks, leveraging AI First principles to scale triage, enrichment, containment, and remediation
• Develop and deploy AI/LLM-powered tooling to accelerate investigations, reduce alert fatigue, and extend team capacity beyond traditional headcount constraints, embedding AI First practices into daily workflows
• Lead and participate in incident response, including detection, investigation, containment, and retrospectives, applying First Principles Problem Solving to identify root causes and improve long-term resilience
• Partner cross-functionally with engineering and platform teams to expand logging, improve observability, and embed detection capabilities into the development lifecycle
• Continuously improve detection quality by analyzing alert performance, tuning for signal, and building feedback loops between incidents and detections using Data-Driven Decision Making
• Proactively identify gaps in visibility or coverage and translate ambiguous problem spaces into concrete detection and response solutions through First Principles Problem Solving
• Adapt quickly to evolving threats, tools, and priorities, helping the team maintain momentum and effectiveness through Change Agility

Skills

Python

Go

Ruby

Security engineering fundamentals

Cloud experience

Tools

Datadog

Splunk

ELK

SentinelOne

CrowdStrike

Job description

HackerOne is seeking a Senior Security Engineer, Detection and Response, to design and deliver detection and response capabilities for a cloud-native environment. You will write code, build AI-powered tooling, and automate workflows across the full detection lifecycle.

You will scale a small team by embedding automation, intelligence, and AI into detection, triage, and incident response, while expanding observability and embedding security into the development lifecycle.