Founder CTO
Trainset AI • Sydney, AU
30+ days ago
Job description
Location: Sydney (preferred) / Australia
Stage: Early revenue, scaling
Equity: 50% vesting over 4 years
Early Revenue
About Trainset.ai
Trainset.ai is building a compliance-first, enterprise-grade AI data labeling platform for companies that actually care about accuracy, security, and scale.
We already have:
- Paying customers
- Access to ~170,000 global freelance workers via existing micro-task platforms
- Clear demand from AI teams needing human-in-the-loop labeling (vision, NLP, LLM evals, RLHF, etc.)
This is no longer an idea — it’s an early business that needs a technical co-founder to help turn momentum into a real category-defining product.
Role
I’m looking for a CTO / Technical Co-Founder to own the technical vision and execution.
You’ll be responsible for:
- Architecting and scaling the core platform
- Designing systems for QA, consensus labeling, auditability, and compliance
- Making early technical decisions that will shape the company for years
- Hiring and leading engineers as we grow
This is a builder role first, leadership role second.
Qualifications
Who You Are
- A senior full-stack engineer or tech lead
- Comfortable moving fast in early-stage chaos
- Opinionated but pragmatic about architecture
- Excited by AI tooling, marketplaces, or data infrastructure
- Looking for real ownership, not just a job
Startup or scale-up experience is a big plus.
Equity & Compensation
- 50% equity, vesting over 4 years (standard founder vesting)
- This is a true co-founder role — not a contractor, not “sweat equity theatre”
Why This Is Interesting
- Real customers, real revenue
- Clear path to enterprise deals
- Strong leverage from existing worker network
- Massive tailwinds from AI adoption
- Opportunity to build something defensible, not just another SaaS wrapper
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