Clera
Co-Founder & CTO
- Location
- San Francisco, CA, US
- Arrangement
- On-site
- Employment type
- Full-time
- Level
- Executive
- Posted
- 10 October 2026 (2 days ago)
Checked yesterdayApplications go to the employer, never to RoleSprint
About this role
ABOUT THE ROLE
Join an AI-powered creative advertising startup as a full-time technical co-founder and CTO. You will own the technical and research direction, building on an existing product to develop systems that learn from creative work and its real-world performance.
WHAT YOU'LL DO
- Set the technical and research strategy, from current workflows through a proprietary training and evaluation platform.
- Build data infrastructure connecting creative briefs, submissions, generation traces, decisions, feedback, and campaign outcomes.
- Develop systems to evaluate, rank, critique, generate, and improve creative work.
- Design allocation policies that direct campaign budgets and inform data collection.
- Choose where to apply frontier models, fine-tuning, post-training, reinforcement learning, and original research.
- Build reliable infrastructure for creator workflows, campaigns, experimentation, model training, and inference.
- Set standards for data quality, consent, privacy, measurement, and model evaluation.
- Recruit and lead the first engineering and research team, while working directly with creators and brands.
WHAT WE'RE LOOKING FOR
- At least 3 years of relevant experience, with hands-on work building preference or reward models, including RLHF, ranking, or evaluation systems.
- Experience with causal inference on observational data, such as selection bias, off-policy evaluation, counterfactual analysis, or adaptive experimentation.
- A track record of shipping products used by people, building production ML infrastructure, and owning model, evaluation, or infrastructure programs end to end.
- Background in ads, marketplaces, recommenders, or ranking systems tied to business outcomes, including experience with noisy, delayed, or subjective feedback.
- Strong technical leadership and recruiting experience. Bandits, sequential allocation, multimodal systems, agents, or latent-variable modeling are valuable.
- Ready to work full time, in person, as an equal co-founder in an early-stage environment.
COMPENSATION & BENEFITS
Equity of approximately 28% as a co-founder. Cash compensation is discussed based on circumstances and fit. Visa sponsorship is not available.
LOCATION
On-site in San Francisco, California.
Work location
- San Francisco, CA, US
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About this listing
Published on Ashby under the board identifier Clera, which is the name the employer’s own job board carries. RoleSprint has not verified the company’s registered or trading name, so it is shown exactly as published rather than tidied up.
RoleSprint is not the employer and not a recruiter. Applications are made on the employer’s own site and never reach us; what RoleSprint does is help you decide whether a role is worth your time and prepare for it if it is.
Published 10 October 2026, last checked yesterday. A posting stops being advertised here 90 days after the employer published it, and one the employer takes down is marked closed rather than quietly removed.