Job Description
Role Title: Fitness Expert
Role Type: Contractor, Remote
Location: United States
micro1 is engaging Fitness Experts to contribute their knowledge and guidance to an innovative project supporting a major customer. In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.
Scope of Work
Deliver insights and expertise in fitness, exercise, and nutrition to inform the development of advanced AI systems.
Collaborate in pairs with other fitness professionals based on mutual availability to provide well-rounded, high-fidelity feedback on project content.
Review, critique, and improve materials related to workout programming, nutrition plans, and general wellness guidance.
Create and evaluate sample fitness programs and nutrition plans for a range of client personas and goals.
Produce detailed written explanations and engage in clear verbal communication to articulate concepts and suggestions for system improvement.
Participate in project meetings, feedback sessions, and collaborative assignments focused on enhancing AI understanding of fitness topics.
Consistently provide availability to fulfill a minimum engagement of 15 hours per week.
Preferred Qualifications
Experience as a personal trainer, nutritionist, or fitness expert.
Demonstrated experience working directly with clients across diverse fitness levels, backgrounds, and goals.
Exceptional written and verbal communication skills, with the ability to explain complex fitness and nutrition topics clearly and concisely.
Experience designing or reviewing customized workout and nutrition plans.
Comfort collaborating remotely with other professionals and using digital tools for communication and documentation.
Ability to adapt feedback style to different audiences, from technical project leads to non-technical stakeholders.
Interest in the future of technology and AI, and curiosity to participate in shaping innovative solutions in the health and wellness domain.
About Micro1
Micro1 is building the essential infrastructure for the next generation of artificial intelligence, moving beyond the limitations of static datasets to create a dynamic ecosystem where models truly learn to think and act. At its core, the company understands that the path to frontier intelligence isn't paved with synthetic data alone; it requires the nuance, judgment, and contextual awareness that only expert human guidance can provide. By positioning itself at the intersection of human expertise and advanced reinforcement learning, Micro1 is tackling the hardest problem in AI today: teaching models not just to answer questions, but to reason through complexity and take meaningful actions in unpredictable, real-world environments.
This mission comes to life through Realm, Micro1's flagship training environment. Realm functions as a high-fidelity simulation ground where AI agents are immersed in scenarios that closely mirror the messiness of actual human workflows. Rather than relying on abstract benchmarks, Realm forces models to engage in agentic actions, multi-step decisions, digital navigation, coding, and problem-solving that require genuine comprehension. It is within these realistic sandboxes that world-class human data is generated, creating a continuous feedback loop where expert annotators observe, correct, and guide model behavior. This process does more than just fine-tune outputs; it fundamentally elevates a model's underlying reasoning architecture, ensuring that the intelligence developed in training holds up when deployed into the wild.
But training is only half the equation. Micro1 recognizes that the true test of an AI system lies in its production performance, which is where Cortex enters the picture. Cortex is a contextual evaluation platform designed to move beyond superficial accuracy metrics and provide a granular, real-time view of how agents behave in live settings. It doesn't just flag errors; it surfaces the underlying context behind failures, revealing why an agent struggled with a particular user intent or environmental variable. This insight is invaluable for engineering teams, as it transforms evaluation from a passive checkpoint into an active improvement tool. With Cortex, companies can catch degradation early, understand the nuances of edge cases, and feed those learnings directly back into Realm for retraining, creating a virtuous cycle of continuous advancement.
Ultimately, Micro1 is not merely a data lab or an evaluation tool it is a comprehensive intelligence engine that connects the entire lifecycle of model development. From the expert human feedback that sharpens raw capability, to the realistic RL environments that forge robust agentic behavior, to the contextual oversight that ensures reliability in production, Micro1 provides the integrated foundation that AI labs and enterprises desperately need. As the industry races toward truly autonomous systems, Micro1 stands as the critical bridge between laboratory breakthroughs and dependable, real-world impact, ensuring that frontier models do not just perform well on paper, but deliver genuine value in the complex, dynamic world they are meant to serve.