Security Engineer - Detection & Response

Are you ready to be a big part of something big? 

At carsales, we’re all about making buying and selling a great experience. Since 1997, we’ve been evolving with the new economy to help people choose how they move - today and tomorrow. 

When it comes to your career, we want to offer meaningful opportunities that empower you to make a lasting impact. But for that to happen, we strive to feel small - small enough to stay agile, learn across teams, and connect authentically with each other. 

With a vision to be the global leader in online vehicle marketplaces, we’re transforming how people buy and sell across the world. We discover new ideas and bring them to life. We continue to grow, and we continue to evolve and we’re not afraid to take bold steps to get there. 

A career in Cyber Security will see you working to protect the products and platforms used every single day by our millions of customers. This position is within our Cyber Security team, where we're on a mission to redefine the security operations model by leveraging automation and AI technologies to stay ahead of an ever-evolving threat landscape. 

We embrace hybrid working - combining the flexibility of remote work with the energy and connection of in-person collaboration. We champion flexibility and offer a range of policies and leave options to support your wellbeing. 

What’s on offer

• Recognition as one of Australia’s Best Workplaces™ by Great Place to Work®, a Family Friendly Workplace, a WORK180 endorsed employer.
• A highly engaged, collaborative team where you’ll learn from exceptional talent.
• 24 weeks paid parental leave for primary caregivers, four weeks for secondary caregivers, and six weeks paid gender-affirming care leave.
• Regular hackathons, continuous learning opportunities, and wellbeing initiatives that support your mental, emotional, and physical health.

What you’ll be doing

As a Security Engineer - Detection & Response, you'll own end-to-end security operations across threat intelligence, detection engineering, incident response and threat hunting. You'll work closely with engineering and platform teams to ensure we detect, respond to, and learn from security events at speed and scale.  

• Lead investigations and remediation efforts across carsales Australia.  
• Champion the use of AI and agentic workflows to modernise and uplift the traditional SecOps model. Continuously develop automation to correlate events, automate triage and remediate at scale. 
• Develop detection engineering capabilities aligned with Mitre ATT&ACK and Mitre ATLAS.  
• Build and operationalise threat intelligence capabilities to inform detection strategies and proactively identify emerging threats. 
• Develop threat hunting capabilities to continuously improve visibility across the attack surface.  

What we’re looking for

We’re looking for someone who can champion detection and response through with a rigorous and innovative approach.

• Demonstrated experience in a security operations or detection engineering role, with hands-on involvement in investigating and responding to real-world security incidents. 
• Proven experience building automations for alert triage, threat intelligence collection and/or detection engineering - you build things, you are not just responding to alerts. 
• Strong understanding of attacker tactics, techniques and procedures (TTPs) with practical experience applying frameworks such as MITRE ATT&CK. 
• Hands-on experience building automation in SIEM platforms and responding to threats in cloud environments. 
• Strong problem-solving capability with a high drive to leverage automation and AI to solve operational challenges at scale. 
• Excellent collaboration skills, aligned with our values: we change the game, we own it, we step in, we are curious, we don't take ourselves too seriously. 

We know not everyone will meet every requirement, and that’s okay. If you’re excited about the role and believe you can make a difference, we’d love to hear from you.

A few other things we want you to know...

• As an equal opportunity employer, carsales welcomes applications from individuals of all backgrounds, identities, abilities, and life experiences. We are committed to fostering a diverse and inclusive workplace where everyone feels valued and supported.
• If you have a disability or require adjustments to participate fully in the recruitment process, please let us know - we’re here to support you.
• We understand the importance of work-life balance and offer flexible working arrangements, including part-time options. If you’d like to explore this, just ask during the process.
• We’re also a proud Circle Back Initiative employer, which means we commit to responding to every applicant.
• Successful candidates joining the carsales team will need to complete a National Police Record check and must have full-time Australian working rights.

So come join us - because every role plays a vital part in our journey toward something big!