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Full Stack Developer

Full Stack Developer

Fitmate CoachPalo Alto, California, United States
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Play a lead role scaling a product that helps people lead healthier lives

Our mission

Fitmate Coach  help people stick to their weight loss and plan with a 1 : 1 coach. Our unique solution tackles people’s main problem of staying consistent with adopting healthy routines, by combining human coaches and AI, to make sure they  get unlimited yet affordable support. Product  demo .

Founded by  Alon Laniado , a 2x founder in the space of  Tech-Enhanced Human Services .

Is this role for you?

Join us at an exciting time as we scale up our client base and continue to innovate our product.

Are you excited about the field of digital health and how AI can revolutionize the sector? Do you want to make a big difference as a key member of a small, highly collaborative team? Do you thrive on the open exchange of ideas and the fast paced environment of a startup?

We are looking for a skilled Senior Backend / Full-Stack Engineer to play a leading role in the development of the end-to-end stack that allows our coaches to support our clients through our app.

  • The candidate should be familiar with the whole full-stack development and have deep experience in building back-end services in a cloud-based, microservices environment.
  • You will tackle problems of increasing complexity and will take ownership for designing, implementing and deploying significant components, including a cutting edge AI stack which automates key parts of the workflow of human coaches.
  • You have a greater focus on Operational Excellence, identifying problems and proposing solutions.
  • You will also work on the development of the end-to-end stack for our consumer facing app through our IOS, web and Android app.
  • You will work closely with the founder and collaborate with the rest of the team in a cross functional approach.

Tech stack :

  • LangGraph, LangSmith, Braintrust for LLM orchestration, observability, and agentic reasoning
  • Embeddings and Retrieval-Augmented Generation (RAG) for semantic search and context-aware responses
  • Conversational client interface : Flutter for iOS and Android (we might move to React Native)
  • Coach dashboard web app : Next.js
  • Backend with Supabase ecosystem : Supabase database (PostgreSQL), Supabase functions, Supabase authentication (OAuth 2.0), storage, and real-time messaging

    • Senior experience is not required for graduate students

    You are a seasoned growth-focused Technology leader – leading from the front providing strategic insight and technical knowledge to design and deliver on the technology roadmap (capable of being a tech architect).

  • Have a background working in a start-up or similar high velocity environment where speed of shipment is key
  • Have an in-depth understanding of the entire development process (design, development and deployment) and interested in the end-to-end picture
  • You have experience / knowledge of working with a range of tech across web, app and full-stack tech with a focus on backend services in a cloud-based, microservices environment (ideally GCP)
  • Experience making build vs buy decisions in context of fast-moving startups
  • Familiarity with asynchronous programming techniques : streams, event-based flows, task queues, message queues
  • Actively codes or willing to code
  • Takes accountability for delivery
  • Having a collaborative work style that includes colleagues in important decisions and leads to shared code ownership
  • Strong product thinker and sense to help the product team make the right decisions that factor the technical considerations
  • Clear and transparent communication re estimations, deadlines, quality, risks across business and tech
  • Capable to challenge strong business stakeholders in an objective manner and find agreement
  • Experience in building LLM powered agents and ability to code on Flutter is a plus (not a requirement)
  • Experience with LangGraph and its application in orchestrating multi-step LLM workflows is a plus; familiarity with LangSmith for observability and debugging, and Braintrust for agentic reasoning and orchestration is highly desirable

    • Compensation & benefits

  • Salary $100-150k pa
  • 90% contribution to private insurance
  • 3% contribution to 401k
  • Share option scheme
  • 20 days paid vacation
  • Working at our offices in Palo Alto and part remote

    • What is it like working at Fitmate ? Check us out on Glassdoor  here

  • We empower people to discover solutions to hard and new problems
  • We encourage (and expect) our People to take big (but informed) bets with significant upside
  • Everyone’s entitled to challenge anyone - based on facts and good judgement
  • We’re passionate about our work and our mission. Life’s too short.
  • We deeply believe in the power of modern product and growth practices

    • What do our clients think of Fitmate?  Trust pilot reviews  here

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    Stack Developer • Palo Alto, California, United States