Senior Security Engineer - Cloud Platform

Xero; Auckland; Hybrid; NZD 120,000 - 180,000; Full time

Job summary

Xero is seeking a Senior Engineer for the Cloud Platform Access team to design and operate identity and access controls at scale across AWS, GCP, and Azure. You will shape secure access as a product and lead hands‑on engineering initiatives.

You will mentor teammates, foster psychological safety, and contribute to reusable automation and Terraform‑based tooling. The role sits at the intersection of cloud infrastructure, security, and developer experience, with hybrid work from Auckland or

Qualifications

• Experience securing at least one public cloud (AWS, GCP, or Azure) with willingness to learn others.
• Designed and maintained reusable Terraform modules and automation codifying IAM controls.
• Strong software engineering foundations; automation-first mindset; proficient in Python or similar scripting language.
• Ability to lead technical design discussions, mentor others, and raise standards across teams.

Responsibilities

• Design and operate identity and access controls at scale across cloud environments (AWS, GCP, Azure).
• Mentor engineers, foster psychological safety, and drive secure-by-default patterns across teams.

Skills

Cloud security

IaC fundamentals

Terraform

Python scripting

Technical leadership

Automation-first

Collaboration

AI in engineering

Tools

Terraform

Python

Job description

The role / impact

As a Senior Engineer in our Cloud Platform Access team, you'll design and operate identity and access controls at scale across AWS, GCP, and Azure. This is high-leverage platform security work where you'll shape secure access as a product rather than simply processing requests. You'll combine hands‑on technical leadership with deep expertise to build guardrails that enable teams to ship quickly without creating excessive privilege or long‑liv­ed credentials.

The role / impact

As a Senior Engineer in our Cloud Platform Access team, you'll design and operate identity and access controls at scale across AWS, GCP, and Azure. This is high-leverage platform security work where you'll shape secure access as a product rather than simply processing requests. You'll combine hands‑on technical leadership with deep expertise to build guardrails that enable teams to ship quickly without creating excessive privilege or long‑liv­ed credentials.
You'll mentor engineers on the team, foster psychological safety, and role‑model modern engineering practices. The work sits at the intersection of cloud infrastructure, security, developer experience, and automation - solving genuine problems that unlock productivity across the organisation.

The Team / How They Connect

The Cloud Platform Access team owns cloud‑native identity, access management, and policy enforcement across our public cloud environments. We work collaboratively with platform, security, and product teams to integrate secure‑by‑default controls early in delivery. The team values psychological safety, thoughtful automation, and engineering excellence - we ship sustainably by removing toil and enabling others to succeed.

The team is currently working on

Understanding the services, risks, and gaps in our current IAM setup across AWS, GCP, and Azure Closing critical identity handover gaps and taking ownership of bounded IAM, Workload Identity Federation, or self‑service improvements Establishing KPI baselines and contributing to design reviews, operations, and mentoring within the team Evolving reusable Terraform modules, policy frameworks, and internal tooling to standardise secure access patterns.

Where And How You Can Work

This role can be based in Auckland or Wellington, offering a hybrid working model that balances local team presence with a global scope of work. You will have the flexibility to work from home while connecting with your colleagues in our modern office spaces during designated boost days.

Here are some of the things we are looking for

• You bring solid experience securing at least one public cloud environment - AWS, GCP, or Azure - with genuine willingness to learn the others. You understand Identity and Infrastructure as Code fundamentals.
• You've designed and maintained reusable Terraform modules and automation that codify IAM controls and policy guardrails at scale.
• Strong software engineering foundations run through your work: you think automation-first, have proficiency in at least one scripting language like Python, and follow modern delivery practices.
• You lead technical design conversations, make sound engineering trade‑offs, and aren't afraid to mentor others. You can lift standards, improve reliability, and keep delivery quality high.
• You approach problems collaboratively, building trust across security, platform, and product teams to enable rapid, secure delivery.
• You're curious about thoughtful AI applications and open to exploring how it might accelerate engineering workflows or solve real problems for the team.