Senior Backend Engineer - AI-Driven SaaS

Biza.io; Brisbane; Remote; AUD 120,000 - 170,000; Full time

Job summary

Biza.io in Australia is seeking a Senior Software Engineer to help shape our platform, design scalable backend services, and mentor fellow engineers. You will work primarily on backend systems using Spring Boot and TypeScript, with opportunities to influence architecture and adopt AI-assisted development techniques.

This remote-first role emphasizes ownership, collaboration across product teams, and delivering secure, reliable software for customers nationwide.

Qualifications

• Experience building SaaS backends in cloud environments.
• Strong software engineering, coding and system design skills.
• Proven track record delivering secure, scalable software.

Responsibilities

• Lead the design, development and delivery of secure, scalable product features.
• Influence architecture, technical decisions and engineering standards across the platform.
• Improve engineering quality with traditional testing plus AI-enabled practices such as code reviews.
• Partner with software engineers, site reliability engineers and product managers to deliver reliable services.
• Solve complex technical challenges and mentor others as a senior escalation point.
• Leverage AI capabilities to accelerate delivery while balancing quality and security.

Skills

Backend system design

Spring Boot

TypeScript(Node)

Next.js

OAuth

AI-assisted development

Remote collaboration

Tools

Spring Boot

TypeScript (Node)

Next.js

OAuth

Job description

Biza.io in Australia is seeking a Senior Software Engineer to help shape our platform, design scalable backend services, and mentor fellow engineers. You will work primarily on backend systems using Spring Boot and TypeScript, with opportunities to influence architecture and adopt AI-assisted development techniques.

This remote-first role emphasizes ownership, collaboration across product teams, and delivering secure, reliable software for customers nationwide.