Senior Frontend Engineer

About the role

You will own the interface where clients work with their Virtual Bid Assistants, from onboarding through daily workflow. Today, the product is built with a server-rendered HTMX and Flask approach: fast, lean, and tightly coupled to real product logic rather than a heavy single-page app. The team is splitting its internal and external portals: the current app becomes the internal tool (likely staying on HTMX, which is backend-friendly), while the external experience is being redesigned in React. A key part of this role is spearheading that migration.

Responsibilities

• The end-to-end experience Virtual Bid Assistants use to do their best work, from onboarding through daily workflow
• Interaction patterns that surface what the AI is doing and keep skilled estimators in control
• Responsive, performant interfaces built on HTMX, Flask templates, and modern CSS/JS, and spearheading the external move to React
• Closing partnership with the designer and backend engineers to turn complex estimating workflows into something that feels simple
• Performance, accessibility, and polish, because details close deals

Requirements

• Must-Have: 5+ years building production, product-facing web applications
• Strong HTML, CSS, and JavaScript fundamentals: you understand the browser, not just a framework
• React proficiency, with the ability to spearhead a migration from server-rendered HTMX to React
• A 0-to-1 track record: you thrive in ambiguity and own features end to end, shipping real product to real users fast
• AI-Native Builder: deep, demonstrated experience using AI to build, ship, and accelerate work; you can take an ambiguous problem and ship a working solution
• Able to interact effectively with a Python backend (not as a backend engineer, but fluent enough to be effective on the frontend)

Nice-to-Have

• HTMX or server-rendered / hypermedia experience, or genuine eagerness to work this way
• Python and Flask comfort for full-stack feature work
• Experience designing AI-first or agentic AI products, and an opinion on human-AI interaction
• Experience simplifying complex workflows in a B2B setting
• Growth from IC to team lead, or early-to-late-stage scaling experience (helpful, not required)
• AEC, glazing, or construction industry exposure
• Veteran or prior-service background (the founder is a Marine Corps Ground Intelligence Officer)