Engineer, Full-Stack

Superset is the AI-native operating system for modern fitness training.

We work with gyms, performance centers, and wellness organizations to deliver personalized training, programming, and health experiences tead of fragmented tools, spreadsheets, and manual workflows, Superset brings everything into a single system of record.

At the core is AI Programming. We use modern LLMs layered with structured data, rules, and real-world constraints to generate, adapt, and deliver training programs across thousands of members. Coaches stay in control, but the system handles the heavy lifting.

We're design-led, engineering-driven, and building for operators who run real businesses, not just creators or hobbyists.

We're looking for a full-stack engineer who is strong on backend systems and comfortable building a product end-to-end, including web and mobile.

This is not a typical feature factory role. You'll work across the stack to build and scale:

• AI-powered training and program delivery
• Mobile and web experiences used daily by coaches and members
• Core systems that power real-world operations inside gyms and wellness organizations

You'll work directly with the CTO and closely with product and design. You'll have high ownership across architecture, product decisions, and execution as we scale.

• Frontend product development in React (web)
• Mobile development in React Native (core user experiences for coaches and members)
• AI-powered workflows to scale the capabilities of industry leading gyms
• Modeling data, APIs, and frontend systems to meet the needs of fitness professionals and facilities
• Systems that balance flexibility with strong constraints and guardrails
• Infrastructure that scales from early pilot projects to large enterprise deployments

• Strong full-stack engineering skills with clear backend depth
• Experience building and shipping production products end-to-end
• Proficiency with or working in React Native (Expo)
• Strong understanding of APIs, data modeling, and system design
• Experience with async systems, queues, and background processing
• Ability to reason about performance, reliability, and tradeoffs
• Pragmatic and product-minded. You can move fast without creating unnecessary complexity
• Strong ownership and communication

Must have:

• Deep, personal experience in fitness
• Regularly attends gyms, classes, or structured training
• Strong intuition for how training programs actually work in the real world (coaches, clients, sessions, progress, constraints)
• Immaculate attention to detail and interest in leading projects end-to-end

Nice to have:

• Experience with AI/ML pipelines or LLM integrations
• Experience with high-throughput or multi-tenant systems
• Familiarity with fitness, health, or real-world operational workflows
• Frontend: Type Script, React and React Native (Expo)
• Infrastructure: AWS, Docker
• Data + AI: LLM APIs, structured data pipelines, background workers
• Payments + integrations: Stripe, third-party health and fitness APIs

• Work across backend, frontend, and mobile in a single role
• Build real AI systems used in production, not prototypes
• Shape how training and wellness programs are delivered at scale

Our founders:

• Peter Coles (CTO, MIT, he/him) has 14 years experience working on and leading engineering teams in NYC including the trail-blazing ML startup, Hunch, which was acquired by eBay, and the innovative wearable company, Ringly. He has a long track record of building and sharing projects on Git Hub and writing about his work, and is a member of the Recurse Center community.
  
  He also built the most popular screens hotting extension, Go Full Page , which is a deceptively simple tool for solving a surprisingly complex problem.
• Taylor Pemberton (CEO, SCAD, he/him) has over a decade of experience working on brand, design, and product for some of the most inspiring tech companies of today. He ran his own high-end studio that included embedding into product teams in Google to develop a mobile learning platform, Airbnb Experiences, and at Spotify as a product design lead on the creator tools team.
  
  Taylor is NASM certified and a huge gym enthusiast.

We're based in New York City and prioritize candidates with at least ~4 hours of overlap with Eastern Time. Our center of mass is in NYC, but we operate as a distributed team today, with strong representation in Brazil, and are open to candidates in similar time zones.

We believe in having a range of experiences and backgrounds on our team. Diversity makes for a better…