Xero Logo

Xero

Senior Security Engineer - Defence

Posted One Month Ago
Be an Early Applicant
Hybrid
Melbourne, Victoria, AUS
Senior level
Hybrid
Melbourne, Victoria, AUS
Senior level
Design, build, and operate production security capabilities for threat detection and response. Develop detection, monitoring, automation, and response workflows across SIEM, SOAR, EDR, and cloud security platforms. Improve detection coverage, control effectiveness, and operational reliability while applying AI safely to security engineering. Lead complex technical initiatives, collaborate across security and engineering teams, and communicate technical risks and trade-offs clearly.
The summary above was generated by AI

The role / impact

As a Senior Engineer in Security Defence, you'll design, build and operate the capabilities that help Xero detect and respond to security threats. You'll work across Security Operations, Security Response, CX, Product and Engineering, turning threat intelligence and security requirements into reliable, measurable security controls that keep our customers and our business safe.

You'll lead complex technical work, help shape our engineering direction, and build a culture of shared ownership and continuous learning across Security Defence and the wider Security team. It's a role for people who like to Go Bold on hard problems, backed by a team that knows how to Go Fast and figure things out together.

The team / how they connect

Security Defence sits at the centre of how Xero detects, investigates and responds to threats. The team covers detection engineering and security automation, working closely with Security Operations, Security Response and Product Engineering to turn intelligence into practical controls. It's a close knit group that shares knowledge openly, challenges assumptions constructively, and backs each other through high pressure moments.

The team is currently working on / Initially, you will focus on

  • Detection, monitoring and response workflows across SIEM, SOAR, EDR and cloud security platforms

  • Automation that reduces manual toil and speeds up how Security Operations respond to threats

  • Ways to measure detection coverage, control effectiveness and operational reliability

  • Safe, valuable ways to bring automation and AI into security engineering

Where and how you can work

We support a flexible working model that empowers you to balance your professional and personal life. You will have the option to work in a hybrid capacity, combining the focus of remote work with the collaboration of our office spaces and team boost days to foster connection and alignment.

Here are some of the things we're looking for

  • You bring hands on experience designing, building and operating production security capabilities or services.

  • Your programming or scripting skills, ideally in Python, help you apply sound software engineering practices to security problems.

  • Security monitoring, detection, threat intelligence, incident response and automation are all areas you know well, alongside tools such as SIEM, SOAR, EDR or cloud security platforms.

  • Working in cloud environments feels natural to you, particularly AWS, along with cloud logging, identity, networking and security services.

  • You understand adversary behaviours and frameworks like MITRE ATT&CK, and know how to measure detection coverage and control effectiveness.

  • Leading complex technical initiatives and influencing outcomes without relying on formal authority comes naturally, and you can explain technical risk and trade offs with clarity.

Apply even if your experience isn't a perfect match! At Xero, we hire based on your skills, passion, and the unique perspective you can bring to enhance our culture and team.

Xero Hawthorn West, Victoria, AUS Office

Xero Melbourne (HQ) Office

Xero’s head office in Australia is in the buzzing suburb of Hawthorn, a stone’s throw from the CBD. Here, a diverse mix of Xeros work in both global and regional teams.

Similar Jobs at Xero

Yesterday
Hybrid
Melbourne, Victoria, AUS
Senior level
Senior level
Cloud • Fintech • Information Technology • Machine Learning • Software
Design and build scalable data solutions spanning ingestion, modelling, pipelines, and platform infrastructure. Own complex technical problems, improve data quality and self-service capabilities, and operate production systems with monitoring and incident response. Use Snowflake, dbt, Prefect, AWS, Terraform, and Flink to develop reliable data platforms and real-time products. Collaborate with product, security, engineering, and data-consuming teams while promoting automation, testing, CI/CD, and modern engineering practices.
Top Skills: AWSCi/CdDbtFlinkInfrastructure As CodePrefectSnowflakeTerraform
Yesterday
Hybrid
Melbourne, Victoria, AUS
Senior level
Senior level
Cloud • Fintech • Information Technology • Machine Learning • Software
Build and maintain large-scale Android and cross-platform mobile applications for Xero’s payroll product. Responsibilities include Android performance, accessibility, testing, release management, API and service development, architectural decision-making, technical leadership, code reviews, mentoring, and collaboration with iOS and backend engineers. The role also involves adopting AI-assisted development practices while maintaining security, privacy, reliability, scalability, and strong customer-focused outcomes.
Top Skills: .NetAndroidAWSCi/CdiOSKubernetes
Yesterday
Hybrid
Melbourne, Victoria, AUS
Entry level
Entry level
Cloud • Fintech • Information Technology • Machine Learning • Software
Maintain and evolve Xero’s large-scale search infrastructure, supporting 50+ million documents, 400TB of data, and 99.9% uptime. Contribute to a search platform modernization project, cluster maintenance, ingestion pipeline integration, and search partnerships. Collaborate with product, architecture, and platform teams while developing search engineering expertise through code reviews and progressively more complex work.
Top Skills: Data Ingestion PipelinesSearch Infrastructure

What you need to know about the Melbourne Tech Scene

Home to 650 biotech companies, 10 major research institutes and nine universities, Melbourne is among one of the top cities for biotech. In fact, some of the greatest medical advancements were conceptualized and developed here, including Symex Lab's "lab-on-a-chip" solution that monitors hormones to predict ovulation for conception, and Denteric's vaccine for periodontal gum disease. Yet, the thousands of people working in the city's healthtech sector are just getting started, to say nothing of the tech advancements across all other sectors.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account