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Senior/Staff Front-End Engineer (1)

MTS Moose Tech Solutions
Full-time
On-site
New York, United States
$200,000 - $250,000 USD yearly
Senior/Staff Front-End Engineer - New York, NY
PLEASE READ THOROUGHLY TO AVOID REJECTION
  • Experience: Senior-level (5+ years front-end experience preferred)
  • Visa/Citizen Requirement: Sponsorship available
  • Location: New York, NY (Partial relocation package available)
  • Top Skills Required: React, web fundamentals, front-end architecture, UI/UX focus

Position Overview: An early-stage, open-source platform focused on improving large language model (LLM) applications is seeking a Senior/Staff Front-End Engineer. As a founding member of the technical team, you will lead the development of user-facing tools that make it easier for developers to visualize, control, and optimize LLM behavior and performance.
Key Responsibilities:
  • Design and build an open-source UI/console that ties together inference, experimentation, and optimization tools.
  • Lead front-end initiatives with a focus on developer delight and usability.
  • Collaborate cross-functionally to ensure product, technical, and user experience alignment.
  • Work closely with back-end engineers to integrate data and observability metrics into front-end components.
  • Participate in in-person collaboration five days a week at the New York office.
  • Contribute across the stack over time, with opportunities to expand into infrastructure or machine learning areas.
Qualifications:
  • Demonstrated ability to lead and deliver large-scale front-end projects.
  • Expertise in React, web fundamentals, and front-end architecture.
  • Strong product thinking and passion for UI/UX.
  • Experience with Remix and TailwindCSS is a plus.
  • Eagerness to learn and grow beyond front-end scope.
  • Open to working in-person five days a week in New York City.
Preferred Qualities:
  • Experience building dashboards or observability tools.
  • Open-source contributions or a passion for open development.
  • Familiarity with developer tooling and LLM ecosystems.
Why Join?
  • Highly competitive compensation: $200,000 - $250,000 salary + meaningful equity + full benefits.
  • Opportunity to build and scale an open-source product.
  • Backing from top-tier investors in AI and developer infrastructure.
  • Freedom to grow cross-functionally across product and technical domains.
  • Work in a small, high-quality, in-person team focused on excellence.
Skills:
React, Web Fundamentals, Front-End Architecture, UI/UX Design, Remix, TailwindCSS, Product Thinking, Cross-Functional Collaboration, Open-Source Development