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Senior Software Engineer

Job in San Mateo, San Mateo County, California, 94409, USA
Listing for: Trayo
Full Time position
Listed on 2026-07-31
Job specializations:
  • Software Development
    Backend Developer, AI Engineer (Applied/Software), Full Stack Developer
Salary/Wage Range or Industry Benchmark: 150000 - 230000 USD Yearly USD 150000.00 230000.00 YEAR
Job Description & How to Apply Below

We're a fast-moving, VC-backed startup building an AI-powered product for enterprise teams. We work at the intersection of data, automation,and user-facing workflows, helping customers make faster,higher-confidence decisions.

Our founding team brings rare depth across both scale and startup execution:

  • Our CEO previously led multiple large-scale analytics services(hundreds of millions in ARR), owning P&L, product, and GTM, and helped scale a major product from early stage through IPO. Her background spans enterprise software, go-to-market strategy, and AI/ML-driven data platforms.
  • Our CTO is a multi-time founder with successful acquisitions and deep technical leadership experience building developer products and business software used by millions of customers.
Why This Role is Special

This is a true early-stage builder role. You'll be one of the first senior engineers, part of the first generation of engineering in agrowing company. You will:

  • Influence architecture, standards, and core technical decisions early
  • Work closely with founders and product leadership
  • Ship quickly, with real feedback loops, and build the right foundation as we scale
What You'll Do
  • Build customer-facing product features end-to-end (backend + frontendas needed)
  • Develop AI-enabled workflows and internal tooling that improve product capabilities
  • Design APIs, data models, and services that scale with usage
  • Improve reliability, observability, and performance
  • Collaborate cross-functionally to turn vague problems into shipped product
What We’re Looking For
  • 5+ years of professional software engineering experience (or equivalent)
  • Strong backend fundamentals (APIs, databases, services)
  • Product mindset and strong ownership
  • Comfort operating in ambiguity in a fast-moving environment
  • Clear communication and strong collaboration skills
Bonus Points (not required)
  • Startup experience
  • Experience with LLM / AI-enabled systems (retrieval, evals, agent/tool patterns)
  • Strong frontend (React / Next.js)
  • Cloud infrastructure experience (AWS/GCP), monitoring/logging
What We Offer
  • Competitive salary + meaningful equity
  • Small team, high trust, real impact
  • Hybrid flexibility; collaboration hub in San Mateo
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Position Requirements
10+ Years work experience
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