Are you a kid at heart looking to build a career with a leading global children’s toy, entertainment and digital gaming company?
Hapiko makes Stickerbox, a voice-activated sticker printer for kids. A child says whatever they can imagine, and seconds later it’s a real sticker in their hand. Hapiko is a Spin Master company, which means we pair our small, senior engineering team with the reach of one of the world’s largest toy companies to pioneer the future of play.
You’ll make sure every sticker a kid prints is safe. We’re a small team building a first-of-its-kind product and scaling it globally. Because it runs generative AI in children’s homes, safety isn’t a feature we add later. As our first dedicated Trust & Safety engineer, you’ll own the systems that keep it that way as we grow.
Own and maintain content moderation end to end, from what a child says to the image that prints, including copyrighted and licensed characters.
Maintain and grow our safety eval suites, and use them to decide when a model, prompt or threshold change is ready to ship.
Continuously improve our classifiers, and decide where in-house models and third-party models fit best.




Run ongoing red teaming against our models and pipeline.
Maintain review tooling for flagged content and parent reports.
Own the incident response runbook for safety issues.
Maintain the technical side of our compliance obligations, including data retention and deletion.
Partner with our ML and Backend / Platform engineers so safety is built into new models and features before they ship.
Applied safety engineering experience on a product with real users.
You’ve built evals or classifiers for harmful content, not just configured a vendor API.
Strong software engineering skills in Python: you can ship production code in the moderation path, where it has to be both fast and fail-secure.
Our mission is to Make Life More Fun with a vision to push the boundaries of innovation, creativity, and fun.
Flexible Work Hours
Innovation, Collaboration and Fun
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📌 Safety Engineering (Toronto)
🏢 Spin Master
📍 Toronto