Senior Software Engineer - Python

Onset Group

📍 North Sydney, New South Wales, Australia

Full time Computer Occupations Posted February 28, 2026

Job Description

Job Description

Senior Backend Engineer (Python & AWS)

North Sydney | Hybrid (3 days in office)

This isn’t a role for someone who just wants to ship tickets.

It’s for an engineer who wants to shape architecture, modernise a real platform, and influence technical direction inside a profitable, globally operating data business.

The company operates at  serious scale, processing and resolving large volumes of identity and data signals used by major international organisations. They are stable, growing (40%+ revenue growth over the past two years), and backed by long-term enterprise contracts.

Now they’re ready to uplift their platform for its next phase.

What You’ll Love About Working Here

1. Genuine Architectural Influence
You’ll act as a 2IC to the Head of Technology. Your thinking will shape direction not just implementation.

2. Real...