Senior Cyber Defence Engineer [Threat Intel & Response]

Newbridge; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Newbridge seeks a senior hands-on defender to own and mature our security detection and response stack. You will hunt, investigate, detect, and build in a full lifecycle role, driving end-to-end incident ownership from discovery to remediation.

You will lead technical responses, write and tune detections, and proactively hunt beyond SIEM alerts across endpoints, identities, and cloud. Cloud native threat work and EDR mastery are essential.

Qualifications

• 5–8 years minimum doing the actual work in IR, Threat Hunting, or Threat Intelligence.

Responsibilities

• Own the full incident lifecycle: detect, respond, and recover.
• Lead technical response, analyze telemetry, logs, and cloud traces to root cause.
• Develop and validate detections; write rules with KQL/SPL/Sigma and tune signals.
• Hunt proactively for attacker behaviors beyond alerts across endpoints, identities, and cloud.
• Secure cloud environments in AWS/Azure/GCP, identify risky permissions and abuse.
• Takedown phishing, fake domains, impersonation, and malicious infra as needed.
• Harden EDR/SIEM/cloud controls and create playbooks to speed up response.

Skills

IR / Threat Hunting experience

Incident response

Threat actor understanding

Cloud security

Scripting

Tools

CrowdStrike

Job description

The Opportunity:

We need a senior hands-on defender who lives in the trenches. Not a manager, not a coordinator - a technical owner who can hunt, investigate, detect, and build. If you enjoy taking a security capability from zero to mature and then keeping it sharp, this is for you.

You will be the technical authority for our detection and response stack. You decide what we need, you build it, you run it, you break it to make it better.

What You'll Own:

This is a full-lifecycle ownership role. You are responsible for the health, effectiveness, and evolution of the tools and processes that let us find and stop attackers - from selection and deployment to tuning, integration, and eventual decommissioning.

Your Focus Areas:

1. Make Intelligence Actionable

Turn outside noise into inside defence. You'll track adversaries, follow campaigns, and understand how they operate. Your job is to make sure what we learn about attackers actually shows up in our controls the same day.

2. Own Incidents End-to-End

When something happens, you lead the technical response. You'll dig through EDR telemetry, logs, network and cloud traces to figure out what happened, how they got in, what they touched, and how to kick them out for good. You'll document it properly so we learn from it.

3. Hunt Before The Alert Fires

You won't wait for a SIEM alert. You'll proactively look for attacker behaviors that our tools missed across endpoints, identities, and cloud. You'll write the detections yourself, test them like an attacker would, and close the gaps you find.

4. Secure & Defend The Cloud

You'll investigate threats natively in AWS / Azure / GCP. This means knowing where to look in CloudTrail, Entra ID, GCP audit logs, spotting risky permissions, identity abuse, and helping engineering fix it at the root.

5. Protect The Brand Outside The Perimeter

Takedown phishing, fake domains, impersonation, malicious infra. You'll reverse the kits and payloads and build the evidence packs needed to take it down.

6. Make Vulnerabilities Mean Something

We don't just patch CVEs. You'll connect external exploit chatter with our actual exposure, prioritize what is truly weaponized, help validate what matters, and drive closure on zero-days that pose real risk.

7. Leave The Environment Better Than You Found It

Every incident is a product feedback loop. You'll harden EDR/SIEM/cloud controls, automate repetitive response steps, and write the playbooks that make the whole team faster next time.

What You Bring:

• 5 to 8 years minimum doing the actual work in IR, Threat Hunting, or Cyber Threat Intelligence.
• Deep, hands-on experience with modern EDR - CrowdStrike preferred - you can query, investigate, and do live response in your sleep.
• You have handled real incidents solo, not just as part of a queue.
• You can write good detections - KQL / SPL / Sigma or similar - and you know how to tune out noise without losing signal.
• You understand how attackers really operate - how they persist, move, elevate, steal creds, and hide C2.
• You've chased threats in the cloud, not just on-prem.
• You can script your way out of problems - Python, PowerShell, or Bash.