Founding Engineer

About us

• At coreflow, we're redefining entertainment with AI. We're one of the fastest-growing startups globally, serving 20 million users in our first year. We’re an in-person company based in Sydney, Australia.

• We’re guided by a set of principles that are foundational to our work and drive every decision:

  • User-first: We build things that people want. We invest time to understand our users and focus on adding value instead of extracting value.

  • High agency, high ownership: We’re responsible for the pieces we own, end-to-end. We own every mistake, figure out what went wrong, and fix it. We don’t blame anyone or anything else.

  • Urgency: This is a once-in-a-lifetime opportunity. We prioritize well, find ways to increase leverage, and move at an inspirational pace.

What you'll do

• You'll be one of our early engineers, owning core product and infrastructure decisions as we scale to hundreds of millions of users.

Example projects

• Ship real-time AI video calls from scratch with <200ms latency within 1 week.

• Orchestrate hundreds of GPUs to serve millions of image generations per day.

• Test and productionize LoRAs and our in-house models to serve 10s of millions of users.

What you'll bring

• 5+ years of experience building software at scale.

• Familiarity with our tech stack: TypeScript, Next.js, React, TailwindCSS, tRPC, Postgres, Temporal, AWS.

• The ability to get shit done end-to-end. From understanding users → proposing an idea → implementation → iteration.

• Hunger to win. This is not going to be easy.

What we offer

• Competitive compensation with meaningful upside.

• A company card for food, coffee, tools, and anything that helps you operate at a high level.

• Daily team lunch and dinner at the office.

• Unlimited workspace budget — build your ideal setup.

• Real ownership and impact from day one.

Our interview process

1. A quick phone call to learn about you and share more about our company.

2. A technical interview, 1hr of system design, no live coding.

3. A paid work trial, so you get a feel for what it's like to work with us.

4. You get an offer, and we celebrate!