AI/ML Engineer

Location

San Francisco, CA

Employment Type

Full time

Compensation

• $155K – $205K • Offers Equity

About the Position

Ello’s mission is to maximize the potential of every child, everywhere. To close that gap, we’re building the world’s first AI teacher: one that listens, speaks, adapts, and inspires, just like the best human educators.

Our first product, Read with Ello, has already helped hundreds of thousands of kids each week learn to read. It listens as they read aloud, offers support when they stumble, and generates magical, personalized stories. It works, and kids love it.

Now, we’re scaling that success into something even bigger: a complete AI teacher for all children. Our new app combines language, speech, and memory to deliver interactive learning for kids worldwide – check it out here. We’re moving fast: we ship weekly, test directly with kids, and push the boundaries of what AI can do in education.

Responsibilities

• Help define the impact of AI on children’s education.
• Own AI systems and features end-to-end: from identifying product opportunities, to building and operating research and evaluation systems, to shipping production improvements used by children worldwide.
• Collaborate with learning experts and product engineers to build infrastructure measuring the educational quality, engagement, safety, latency, and behavior of an AI teacher.
• Design and improve the agent harness that powers Ello’s tutoring experience, including how the tutor decides what to teach next, when to intervene, and how to adapt to each child.
• Develop learner profiling and adaptation systems that build a model of each child – their strengths, gaps, pace, and engagement patterns – and use that model to drive instructional decisions.
• Develop feedback loops and data flywheels that continuously improve product quality through usage, evaluation, and experimentation.

Requirements

• Experience: 3+ years of experience building AI products in an engineering or research role. You’ve worked in environments that require you to take a high level of ownership.
• Software engineering fundamentals: You take pride in writing clean Python code that others can build upon. You’re able to get up-to-speed quickly on unfamiliar code, work well with other engineers of varying backgrounds, and debug complex systems. You can make technical decisions with incomplete information while still maintaining high engineering standards.
• Evaluation and product improvement: You’ve built and operated evaluation or measurement systems, such as AI evals. You can own the loop from ambiguous product quality questions, to concrete metrics and research plans, back to production improvements.
• Research and experimentation: You’re comfortable with experimental thinking and reasoning through how to build systems around improving a non-deterministic product, while the underlying AI foundations shift. You can think empirically, but also make good calls in the gray area when needing to weigh conflicting signals and move quickly.
• Machine learning foundations: You’re able to read recent ML papers and implement parts of the stack – you don’t need deep model training expertise, but you do need to understand how they work and how to evaluate them. You have sufficient proficiency in applied mathematics and linear algebra to contribute to research discussions.
• AI-forward workflow: You have a working practice of leveraging AI in your engineering workflows, and an active curiosity in how AI is transforming work.

Nice to Have

• Public projects that demonstrate technical creativity.
• Strong product intuition - you can tell what's worth measuring and what isn't.
• Depth in low-latency inference at scale.
• Experience with model training.
• Familiarity with speech systems.

We Offer

• Competitive salary range: $155K - $205K per year.
• Offers equity.
• Opportunity to work with a team of experts in AI and education.
• Collaborative and inclusive work environment.
• Potential for remote work options.

About the Company

Ello is a public benefit corporation on a mission to maximize the potential of all children. We’re currently around 45 people, headquartered in San Francisco with another office in Nairobi, Kenya.

Our team has deep expertise in artificial intelligence, K-12 education, and child development across institutions such as Stanford, Berkeley, Google, Apple, and more. We were part of Y Combinator’s W20 batch and are funded by world-class investors including Goodwater Capital, Homebrew, Reed Hastings, Common Sense Growth, Ravensburger, Project A Ventures, Reach Capital, Khosla Ventures, WndrCo, Visible Ventures, and K9 Ventures.

We’re a small, collaborative team that takes each other’s voices very seriously. Because our mission is to support all children, it is critical that our team is representative of the communities we work in; we place significant emphasis on ensuring diversity in our team and inclusion in our culture.

We feel enormously privileged to be one of the few companies that has the opportunity to take a shot at truly revolutionizing education with AI at this inflection point in technology. We don’t take it for granted, so we work quite hard to turn that vision into reality with urgency. We want to create an environment in which we can all be our best selves, use our strengths to take Ello forward, and develop our own skills. We want to have fun while working hard to do impactful things that we’re proud of – and we believe it’s possible to do both.

At Ello, diversity is a moral imperative and a competitive advantage. We do not discriminate based on race, religion, skin color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We plan and structure our interviews to assess skills and experience directly. If you need accommodations throughout the interview process, please contact [email protected].