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Full-Stack Engineer

JeffreyM ConsultingSan Francisco, CaliforniaπŸ‡ΊπŸ‡ΈUnited StatesPosted Oct 2, 2026

Quick Overview

Seniority
Mid Senior
Work mode
On Site
Location
San Francisco, California, United States
Posted
13 hours ago
FigmaLinearCockroachDBDatabricksDatadogLLMNotionVercel

Job Description

Description:

Target Profile:

Our client wants a high-caliber full-stack/product engineer who also understands LLMs and agents.

The key distinction from their Research Engineer search:

FULL-STACK ENGINEERING FIRST β†’ AGENT DEPTH SECOND

Candidates do not need to be hardcore agent researchers. The client explicitly allows engineers with hands-on LLM/agent experience or demonstrable ability to ramp quickly.

Core profile:

FULL-STACK β†’ END-TO-END OWNERSHIP β†’ AGENTS/LLMs β†’ CUSTOMER-FACING β†’ 0β†’1 β†’ HIGH AGENCY

What They’ll Actually Build:

This role owns the product that helps engineers understand why production agents are failing and whether fixes actually work.

Ideal Candidate:

Someone who can:

TALK TO CUSTOMER β†’ IDENTIFY PROBLEM β†’ DESIGN PRODUCT β†’ BUILD BACKEND β†’ BUILD UI β†’ SHIP β†’ OBSERVE β†’ ITERATE

They shouldn't need:

CUSTOMER β†’ PM β†’ PRD β†’ ENGINEER

They should be comfortable collapsing that chain themselves.

Must Haves:

  • 3–7 years full-stack engineering
  • Strong production engineering
  • Owns systems data layer β†’ backend β†’ UI
  • Hands-on LLM/agent experience or compelling evidence of ability to ramp rapidly
  • Strong technical problem solving
  • Comfortable with ambiguity
  • Excellent communication
  • Direct customer interaction
  • Product instincts
  • High agency
  • Can define what to build rather than waiting for specs
  • SF / willing to relocate
  • 5 days/week in office

About 30% of the role is customer-facing, which is unusually important for this search.

Strong Green Flags:

  • Palantir
  • Databricks
  • Datadog
  • Cognition
  • Decagon
  • Sierra
  • Linear
  • Cursor
  • Ramp
  • Figma
  • Vercel
  • CockroachDB
  • Retool
  • Modal
  • Anyscale
  • Runway
  • Applied Intuition
  • Anduril
  • Notion
  • Nomic
  • MotherDuck
  • Strong product company + technical depth
  • FDE / Solutions Engineer with serious coding depth
  • Early startup engineer
  • Ex-founder
  • Founder-to-be profile
  • Coding competitions
  • Research + production engineering
  • AI evals
  • Observability
  • Agent behavior monitoring

Nice-to-Haves:

  • Agent evals
  • Observability
  • Agent behavior monitoring
  • FDE experience
  • Solutions engineering
  • Founder background
  • Early startup
  • Strong infrastructure
  • Backend depth
  • AI product experience
  • Coding competitions
  • Research experience

Red Flags:

  • Agent experience but mediocre engineering
  • AI wrapper/demo experience
  • Research without production ownership
  • Pure backend/infrastructure without product range
  • Pure frontend without systems depth
  • Never owned data β†’ UI
  • No customer-facing experience
  • Needs specifications handed down
  • Weak communicator
  • Treats FDE/product engineering as a fallback
  • Slow-moving candidate / weak commitment
  • Cannot work in SF

Compensation: $200K–$300K + equity