Principal Full Stack Engineer

Principal Full Stack Engineer / AI Engineer
📍 Sydney (Full-time, In Office)💰 $400,000 – $650,000+ Base + Equity + Bonuses🌏 Visa Sponsorship Available
We’re partnering with a rapidly scaling AI startup building a next-generation start-up used by millions of people globally.
In just over a year, the company has achieved significant traction:

• 1M+ unique users per day
• 8-figure annual revenue

The result is an engineering team where every individual has enormous impact on product direction, infrastructure, and scale.
The Opportunity:The company is hiring exceptional backend and product engineers who enjoy solving complex engineering problems at scale.You will be working on systems that support millions of users interacting with AI-powered products in real time.
Key responsibilities include:

• Designing and building high-scale backend systems
• Developing reliable infrastructure powering AI-driven consumer applications
• Owning systems end-to-end from architecture to production
• Solving problems around performance, reliability, and scalability
• Collaborating closely with product and growth teams in a fast-paced environment

Current Tech stack includes:

• TypeScript
• Next.js
• Modern backend infrastructure supporting large-scale AI workloads

The team also includes dedicated AI researchers, while this role focuses primarily on backend systems and product infrastructure.
What They’re Looking For:This team hires selectively and prioritises engineers who have already worked on products at meaningful scale.
Strong candidates typically have experience with:

• Products serving millions of users
• Large distributed systems
• Designing backend systems for high traffic consumer platforms
• Environments requiring end-to-end ownership and fast iteration

Engineers who have worked on high-scale consumer products or infrastructure-heavy startups tend to thrive in this environment.
Culture & Environment:This company is building a high-performance engineering culture.

• Fully in-person team based close to Sydney CBD.
• Fast-paced, highly collaborative environment
• High ownership and accountability
• Engineers move quickly and ship frequently

This environment is best suited to engineers who enjoy intense problem solving and building ambitious products quickly.
Compensation:Compensation is significantly above the local market:

• Up to $650k base + equity + bonuses for exceptional candidates
• Equity packages tailored case-by-case

Why This Role Is Interesting:The company is building the next generation of AI-powered interactive experiences.
Rather than static personalisation (like recommendation systems), the vision is to build deeply personalised AI interactions and dynamic storytelling experiences.
The technology enabling this is still evolving, which means the engineering team is operating at the frontier of applied AI product development.
For further information on next steps on your application, we will reach out directly.