Software Engineer
coreflow
Job Description
Job Description
About us\n
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We're building a new category of interactive entertainment powered by AI characters, image, video, and real-time experiences. We’re one of the most-visited AI products globally, serving millions of users every day.
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We work in-person in Sydney, Australia, and hire globally.
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How we work
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User-first: We build what people want. We invest time to understand our users and focus on adding value instead of extracting value.
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High agency, high ownership: We own outcomes end-to-end. When something goes wrong, we take responsibility and fix it.
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Urgency: We prioritize ruthlessly, increase leverage, and move at an exceptional pace.
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What you'll do
\nYou’ll join a small, talent-dense engineering team with significant ownership across product, infrastructure, and AI.
\nYou won’t be handed narrowly-scoped tickets. You’ll work from problems and outcomes: understand what users need, decide what should be built, design the system, ship it, measure the result, and iterate.
Example projects
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Design memory for month-long conversations. Decide how memories are written, ranked, and retrieved across billions of messages while fitting everything into a fixed context budget.
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Build the For You feed. Own retrieval, ranking, cold start, and experimentation end-to-end, with retention as the metric.
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Ship frontier models days after release. Evaluate and benchmark new models, figure out the economics of hosting them at scale, and find the best configuration for millions of users.
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What you'll bring
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A track record of shipping exceptional products at meaningful scale.
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Strong product and engineering judgment: knowing what to build, how to build it, and where to make tradeoffs.
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Hunger to win. You want high ownership, high expectations, and a lot of responsibility.
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Our product stack includes TypeScript, Next.js, React, tRPC, Postgres, ClickHouse, Temporal, and AWS. Our inference stack is Python, serving LLMs, TTS, and diffusion image and video models on self-hosted GPUs.
What we offer
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Top-of-market compensation with meaningful equity upside.
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Real ownership from day one. Work on important problems and see the impact of what you ship.
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Fast-growing scope. As your impact grows, your responsibility and compensation should grow with it.
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A company card for food, coffee, tools, and anything that helps you do your best work.
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Daily team lunch and dinner at the office.
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An unlimited workspace budget to build your ideal setup.
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Visa sponsorship and relocation assistance for people moving to Sydney.
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How we think about comp
\nWe raise the ceiling for exceptional performers, not the floor. As your impact grows, your compensation should too.
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The listed range is cash + equity, with superannuation on top.
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We review compensation every 6 months.
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Bonuses reward past impact, and raises reflect your new level.
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Our interview process
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Intro call: 15 minutes to align on the role and company.
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Founder interview: go deep on what you’ve built, how you think, and how you work.
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Technical interview: 1 hour of system design and technical discussion. No live coding.
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Paid work trial: spend 3 days with us in Sydney working on a real problem. We cover travel and accommodation, if needed.
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Offer: if it’s a strong fit, we move quickly.
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