Senior Java Developer / Software Engineer (Developer)

Harrison McMillan Pty Ltd; Canberra; Hybrid; AUD 90,000 - 120,000; Full time

Job summary

Harrison McMillan Pty Ltd is seeking a Senior Java Developer to build and enhance enterprise capacity management solutions. The role requires SFIA level 5 capabilities across design, build, deployment and software configuration, with strong Java development experience in complex environments.

Hybrid work options are available in Canberra, ACT, Australia, with potential work-from-home considered. A Negative Vetting Level 1 security clearance or the ability to obtain one is required.

Qualifications

• Proven experience with Java in complex enterprise environments.
• Strong ability to engage with stakeholders and document technical decisions.
• Experience delivering capacity management, monitoring or automation solutions.

Responsibilities

• Develop, enhance and maintain Java application components, APIs, interfaces and processing logic.
• Implement and support capacity and observability data collection solutions.
• Design and support PostgreSQL data aggregation, transformation and storage patterns.
• Contribute to Grafana dashboards, reporting and forecasting capabilities.
• Investigate defects, perform root cause analysis and support production releases.
• Develop technical documentation, implementation notes and knowledge transfer material.
• Support automation, capacity reporting and operational self-service initiatives.

Skills

Java

Stakeholder engagement

Tools

Grafana

PostgreSQL

Elastic

Prometheus

Dynatrace

Job description

Senior Java Developer / Software Engineer (Developer)

At Harrison McMillan, our mission is simple: to change lives, one placement at a time. As a trusted recruitment partner to government and industry, we connect exceptional people with opportunities where they can make a genuine impact.

Harrison McMillan is seeking an experienced Senior Java Developer / Software Engineer to develop and enhance enterprise capacity management and automation solutions.

This is a long-term 12-month contract with extension options up to 24 months and is based in Canberra, ACT. Hybrid working arrangements are available, with work from home considered.

Due to the nature of this role, a Negative Vetting Level 1 security clearance, or the ability to obtain one, is required.

Key Responsibilities:

Develop, enhance and maintain Java application components, APIs, interfaces and processing logic.

Implement and support capacity and observability data collection solutions.

Design and support PostgreSQL data aggregation, transformation and storage patterns.

Contribute to Grafana dashboards, reporting and forecasting capabilities.

Investigate defects, perform root cause analysis and support production releases.

Develop technical documentation, implementation notes and knowledge transfer material.

Support automation, capacity reporting and operational self-service initiatives.

SFIA Level 5 capability in programming/software development.

SFIA Level 5 capability in systems integration and build.

SFIA Level 5 capability in systems design.

SFIA Level 5 capability in release and deployment.

SFIA Level 5 capability in software configuration.

Experience with Java development in complex enterprise environments.

Experience integrating monitoring and observability platforms such as Grafana, Elastic, Prometheus, Dynatrace or similar.

Experience with automation, data collection and operational tooling.

Strong stakeholder engagement and technical documentation skills.

SFIA Level 4 capability in software design, testing and specialist advice.

Experience with PostgreSQL database development and optimisation.

Experience supporting Linux-based environments.

Experience delivering capacity management, monitoring or automation solutions.

Experience working within Federal Government environments.

RFQ Closing Date: Tuesday, 17 November 2026