Senior AI Software Engineer

Sirius People; Sydney; Hybrid; AUD 180,000 - 240,000; Full time

Job summary

Sirius Technology in Sydney CBD is seeking a Senior AI Software Engineer to design and build scalable backend systems and microservices in Python and Java, enabling enterprise-wide AI agent deployment. You will architect AI/ML pipelines, integrate graph technologies like Neo4j or Neptune, and support multi-agent orchestration in a high-availability platform.

This is a hybrid Sydney-based 12-month contract with extension potential, requiring production-grade software experience and a focus on

Qualifications

• Extensive commercial backend development in Python and Java.
• Proven experience deploying production AI/ML pipelines and LLM infrastructure.
• Hands-on with Graph technologies (Neo4j, Neptune) and knowledge graphs.
• Experience with multi-agent enterprise software environments and orchestrating LLMs.
• Strong distributed systems and high-availability design.
• Australian Citizen or Permanent Resident (PR).

Responsibilities

• Design and build scalable backend systems and microservices in Python and Java to enable enterprise-wide AI agent deployment.
• Architect and integrate robust AI/ML pipelines into existing high-availability software platforms.
• Leverage Graph technologies to structure, query, and optimise complex enterprise data relationships for agentic workflows.
• Build and maintain infrastructure for multi-agent platforms, state management, and enterprise security controls.
• Utilise modern AI tools and LLM capabilities to solve complex software engineering bottlenecks at scale.
• Collaborate with business unit development teams to streamline integration and maintain platform reliability.

Skills

Python/Java backend

Production AI/ML pipelines

Graph technologies

Distributed systems

LLM orchestration

Tools

Neo4j

Amazon Neptune

Job description

Senior AI Software Engineer | Python, Java, Graph DB | Sydney CBD | Hybrid | 12 Month Contract (extendable)

Sirius Technology is working with a leading financial services organisation based in Sydney CBD to recruit a Senior AI Software Engineer for a high-impact 12-month contract.

This role sits within an enterprise AI Enablement platform team in Retail Banking, building the core software rails and infrastructure that allow engineering teams across the organisation to deploy multi-agent AI solutions. This is a core backend software engineering position requiring strong programming fundamentals, distributed systems experience, and production-grade software development. The team has been running production multi-agent environments for over a year, so we are seeking an engineer with genuine commercial production experience integrating AI systems, rather than candidates focused solely on basic experimentation, hobby projects, or quick prototypes.

Responsibilities

• Design and build scalable, production-grade backend systems and microservices in Python and Java to enable enterprise-wide AI agent deployment.


• Architect and integrate robust AI/ML pipelines into existing high-availability software platforms.


• Leverage Graph technologies to structure, query, and optimise complex enterprise data relationships for agentic workflows.


• Build and maintain infrastructure for multi-agent platforms, state management, and enterprise security controls.


• Utilise modern AI tools and LLM capabilities to solve complex software engineering bottlenecks at scale.


• Collaborate with business unit development teams to streamline integration and maintain platform reliability.

Skills

• Strong core software engineering fundamentals with extensive commercial backend development experience in Python and Java.


• Proven commercial experience deploying production AI/ML pipelines and LLM infrastructure (beyond POCs or personal projects).


• Hands-on experience working with Graph technologies (e.g., Neo4j, Amazon Neptune, or knowledge graphs).


• Experience with, or exposure to, multi-agent enterprise software environments and complex LLM orchestration.


• Solid analytical and problem-solving capabilities within high-availability distributed systems.


• Must be an Australian Citizen or Permanent Resident (PR).