Senior Frontend Engineer

About the role

A key part of this role is spearheading the migration of the external product experience from a traditional software interface to a human-plus-AI co-working workspace. This involves designing interaction patterns that surface what the AI is doing while keeping expert users in control, building responsive and performant interfaces using HTMX, Flask templates, and modern CSS/JS, and leading the transition to React.

Responsibilities

• Own the end-to-end experience users rely on, from onboarding through daily workflow
• Design interaction patterns that surface what the AI is doing and keep expert users in control
• Build responsive, performant interfaces on HTMX, Flask templates, and modern CSS/JS, and spearhead the external move to React
• Partner closely with the designer and backend engineers to turn complex workflows into something that feels simple
• Own performance, accessibility, and polish — details close deals
• Tech stack: HTMX, Flask (Python), modern CSS/JS; external product migrating to React

Requirements

• 5+ years product-facing frontend
• Strong HTML / CSS / JS fundamentals
• React (can lead HTMX to React migration)
• AI-native builder
• Hybrid: Philadelphia, New York, or DC
• Early-stage team experience: collaborative, comfortable owning a piece end to end
• Understands the backend (Python) well enough to be effective, and translates design intent into polished frontend
• Simplifies complex workflows for users in a B2B setting, and can manage stakeholders (designer, backend, founder)
• Strong portfolio or side project, and real interest and opinions on human-AI co-working interfaces

Qualifications

• Coded pre-AI, so fundamentals are deep enough to pick up HTMX quickly, and now genuinely AI-native in how they build
• Early-stage team experience: collaborative, comfortable owning a piece end to end
• Understands the backend (Python) well enough to be effective, and translates design intent into polished frontend
• Simplifies complex workflows for users in a B2B setting, and can manage stakeholders (designer, backend, founder)
• Strong portfolio or side project, and real interest and opinions on human-AI co-working interfaces

Skills

• Product-facing frontend
• HTML / CSS / JS fundamentals
• React
• AI-native builder
• Collaborative, end-to-end ownership
• Backend knowledge (Python)
• Complex workflow simplification
• Human-AI co-working interfaces

Benefits

• Meaningful equity on the generous side, as an early hire
• Hybrid schedule with a real HQ for in-person collaboration
• Visa sponsorship (H-1B transfer / F-1 OPT)
• Spearhead a greenfield React rebuild and shape genuinely novel human-AI co-working interfaces

Pay

$150,000–$190,000 + equity

Schedule

Hybrid