This job post has been marked expired, applying is not possible anymore.
Founder CTO
Trainset AI
Sydney, New South Wales (Onsite)
Full Time
About the Role
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 ~150,000+ 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.
The 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
- Leading product development end-to-end (frontend, backend, infra)
- 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.
Who You Are
You’re likely:
- 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
Please let Trainset AI know that you found this role at ctojobshq.com as a way to support us, so we can keep providing you with great CTO job opportunities.
About Trainset AI
Sydney, New South Wales