Senior AI Systems Engineer: Production & LLM Ops

Xero; Melbourne; Hybrid; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible hybrid work model

Office access

Collaborative culture

Job summary

Xero is seeking a Senior Backend Engineer to design, build and own the production systems behind its AI features. You will work on the services, pipelines and infrastructure that power large-scale, agentic experiences for millions of small businesses.

This role focuses on production engineering rather than model training, emphasizing reliability, cost and scalable architecture. You will collaborate across AI Products, set standards, and mentor teammates while partnering with data scientists to

Qualifications

• Track record designing, shipping and operating production-grade backend systems at scale.
• Experience building/operating production systems for LLM or agentic workloads (orchestration, tool use, evaluation, guardrails, latency and cost management).
• Strong system design fundamentals and excellent coding in Python, or another language suited to web-scale services.

Responsibilities

• Design, build and own production systems powering AI features.
• Own architecture decisions affecting scale, cost, reliability and speed of shipping.
• Mentor engineers and raise engineering standards across AI products.

Skills

Backend design

Production systems

LLM workloads

Python

AWS cloud

CI/CD

Observability

On-call

Data processing

Communication

Mentoring

Tools

AWS

Python

Kubernetes

Job description

Xero is seeking a Senior Backend Engineer to design, build and own the production systems behind its AI features. You will work on the services, pipelines and infrastructure that power large-scale, agentic experiences for millions of small businesses.

This role focuses on production engineering rather than model training, emphasizing reliability, cost and scalable architecture. You will collaborate across AI Products, set standards, and mentor teammates while partnering with data scientists to