Senior Machine Learning Engineer

At Nomi, we're building AI companions that form deeply meaningful, humanlike relationships and immersive roleplaying experiences. With over a million users growing at ~8% month-over-month, your work directly impacts millions of lives. Our users tell us we've helped them find self-worth, leave unhealthy relationships, try therapy, and even save their lives. See countless real user testimonials here: https://nomi.ai/spotlight/ (https://nomi.ai/spotlight/) and our recent news coverage here https://www.cnbc.com/2025/08/01/human-ai-relationships-love-... (https://www.cnbc.com/2025/08/01/human-ai-relationships-love-nomi.html) As an ML Engineer or Senior ML Engineer, you'll lead innovation in large language model (LLM) post-training, retrieval augmented generation (RAG), and agentic capabilities, directly shaping how users connect with our AI. We offer: * Full autonomy to experiment and deploy cutting-edge ML techniques * A fully remote, async culture emphasizing results over meetings * International team with visa sponsorship available * For US employees: 401k (100% match up to 5%), fully covered health insurance, equity Great to haves: * Extensive hands on experience with things such as multinode training, rlhf, knowledge distillation, test time compute, rag, realtime video * Up to date with SOTA in LLM post training (would love to hear what research paper you think is or would be most impactful for our roadmap!) * Genuine passion for our product, finds the idea of engaging with our community on Discord/Reddit to be a pro (it is a very different experience than developing enterprise software!) * A high internal bar for excellence and relentless drive To apply, email alex [at] nomi [dot] ai with HN in the subject line.