Senior Machine Learning Engineer

**About Nomi.ai:** Nomi.ai is building AI companions that form deeply meaningful, humanlike relationships and immersive roleplaying experiences. With over a million users growing at ~10% 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. Our product is backed by extensive research and positive user testimonials, as seen in our User Spotlight section.

**What 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

**About The Role:** We are seeking a Senior Machine Learning Engineer to lead innovation in large language model (LLM) post-training, retrieval augmented generation (RAG), and agentic capabilities, directly shaping how users connect with our AI.

**Responsibilities:**
* Lead innovation in LLM post-training, RAG, and agentic capabilities, directly shaping how users connect with our AI.
* Design and implement systems that optimize network traffic and scale for global expansion.
* Drive architectural decisions for high-impact projects, ensuring scalability and reliability.
* Co-author long-term technical roadmaps that set the vision for network scalability, performance, and engineering velocity.
* Set the standard for a culture of engineering and operational excellence.
* Build and nurture effective partnerships across engineering, product, and security teams to align on network infrastructure goals.
* Lead and conduct design reviews for critical projects with a focus on system-level tradeoffs and network scalability.
* Drive the design and implementation of “secure by default” network systems in collaboration with security teams.
* Act as a key stakeholder by engaging with customers and internal teams to understand business requirements and deliver innovative solutions.

**Requirements:**
* Proven experience leading complex engineering efforts focused on network traffic management, network optimization, and cloud orchestration.
* Exceptional collaboration and communication skills, with a demonstrated ability to align stakeholders and lead cross-functional teams.
* A track record of contributing to long-term technical roadmaps and making thoughtful system-level tradeoffs.
* At least 8+ years of coding experience in languages like Go, Java, or similar, with strong expertise in writing concurrent and distributed code.
* Extensive experience designing and building distributed systems, leveraging concurrency primitives, and optimizing network performance.
* Deep expertise in traffic and networking systems, with familiarity across adjacent infrastructure domains.
* Hands-on experience with cloud providers such as AWS, GCP, or Azure, and the ability to optimize cost, performance, and scalability.
* A strong sense of ownership and the ability to balance short-term priorities with long-term strategic goals.

**Great to haves:**
* Extensive hands on experience with things such as multinode training, rlhf, knowledge distillation, test time compute, rag.
* 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.

**Compensation:** The estimated pay range for this role is $150,000 - $250,000. Additionally, this role is eligible to participate in Nomi's equity plan.