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Member of Technical Staff Product engineering focused

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: FitNext Co.
Full Time position
Listed on 2026-01-17
Job specializations:
  • IT/Tech
    AI Engineer, Data Engineer
Salary/Wage Range or Industry Benchmark: 175000 - 275000 USD Yearly USD 175000.00 275000.00 YEAR
Job Description & How to Apply Below

Member of Technical Staff (Product Engineering Focused)

Location: San Francisco, CA (On-site, Full-time)
Salary Range: $175,000 – $275,000 per year
Equity: 0.25% – 1.5%
Visa Sponsorship: Available (including transfers and full sponsorship for exceptional candidates)
Tech Stack: Python, React, Type Script
Reports to: Hiring Manager (Linked In profile shared during the process)

About the Role

We are looking for a Product-focused Full Stack Engineer to help build systems that collect, structure, and serve large-scale consumer “taste” data. This role spans data pipelines, AI systems, backend infrastructure
, and consumer-grade frontend experiences with gamification and growth loops.

You will work in a fast-moving, early-stage environment, owning features end to end and collaborating closely with the founding team, researchers, and creative experts.

Key Responsibilities Back-End (Data, AI, Infrastructure)
  • Build and scale data pipelines for ingesting, processing, and retrieving data from the web, files, and other sources
  • Design and maintain inference and API-serving infrastructure handling millions of requests
  • Develop systems for embeddings, indexing, AI agent execution, and synthetic data generation
  • Build scalable crawling and web scraping systems, including visual data extraction
  • Improve system scalability, reliability, and automation through internal tooling
  • Collaborate with leadership and creative experts to scope and implement AI-driven product features
Front-End (Product & Tooling)
  • Build internal tools for operations teams managing data creation workflows
  • Develop external expert-facing applications for annotation, contribution, and review
  • Contribute to future product features such as gamification, quizzes, reward systems, and leaderboards
  • Collaborate closely with designers, researchers, and creative experts in an early-stage setup
Must-Have Qualifications
  • Strong experience with Python
  • Experience building or maintaining CI/CD systems and tooling
  • Familiarity with AI/LLM-powered systems
    , embeddings, and index creation/maintenance
  • Experience with web scraping, data extraction, and large-scale data processing
  • Strong background in cloud infrastructure, systems design, and automation
Nice to Have
  • Experience working in early-stage startups
  • Comfort operating in ambiguity and owning projects end to end
  • Product mindset with attention to user experience and iteration speed
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