Guthrie AI — Senior Frontend Engineer

Guthrie AI — Senior Frontend Engineer Type: Full-time | Hybrid | New York City, NY · Washington, D.C. · Philadelphia, PA Compensation: $150,000–$190,000 + meaningful equity (early hire) Hiring count: 1 Visa sponsorship: Yes — H-1B transfer / F-1 OPT Reports to: Not specified on the role page (technical round is with the CTO and the product designer) About Guthrie AI Guthrie AI builds vertical AI for commercial glazing contractors — the teams that construct the glass facades of the world's most iconic buildings. Winning these high-stakes bids leaves estimators drowning in RFPs, addenda, and vendor quotes, so Guthrie pairs every client with a Virtual Bid Assistant: a skilled human estimator powered by its proprietary platform who pulls scope from RFPs, manages RFIs, and generates proposals at a speed no solo estimator could match. The company is around $2M ARR with a plan to 10x in the next 12 months — seed-stage, AI-native, VC-backed, and moving fast. Founded: 2023 | Team size: 11–50 | Total funding: Not disclosed (backed by top VCs) Industry: Property Tech / Vertical AI for the trades ("agentic AI for the trades") Website: https://guthrieai.com Office: Philadelphia HQ (hybrid) Why Candidates Should Join Spearhead the React migration: Own the external product's move from server-rendered HTMX/Flask to React, and own the frontend build end to end. Build human-AI co-working interfaces: The external redesign is a shift in kind — toward a Notion/Cowork-style human-plus-AI workspace where users finish the task, not just view data. Genuinely novel interaction design. Early-hire equity + real traction: Meaningful equity on the generous side; ~$2M ARR with a 10x plan; backed by top VCs. Hybrid with a real HQ: Philadelphia HQ for in-person collaboration; NYC or DC also work. Visa sponsorship: H-1B transfer / F-1 OPT supported. Intake Call Summary Intake was provided as a video only on the role page and is not transcribed — no text summary is available. Watch the intake video before scoring/outreach if a summary is needed. The Role Own the interface where clients work with their Virtual Bid Assistants, from onboarding through daily workflow. Today the product is server-rendered HTMX + Flask (fast, lean, tightly coupled to product logic rather than a heavy SPA). The team is splitting internal and external portals — the current app becomes the internal tool (likely staying on HTMX), while the external experience is being rebuilt in React. This role spearheads that external migration and the shift toward a human-plus-AI co-working workspace. This is an engineering role, not a design role: there is already a designer, and this person owns the frontend build. What You'll Be Doing Own the end-to-end experience Virtual Bid Assistants use, from onboarding through daily workflow Design interaction patterns that surface what the AI is doing and keep skilled estimators 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 estimating 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 Portfolio Green Flags 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 Red Flags Purely B2C background with no complex-workflow or B2B experience Five years but purely IC at a large company, no 0-to-1 ownership, no compelling side project or portfolio Not genuinely AI-native in their building A product designer looking for a design role rather than an engineer who owns the build Cannot be based in or commute from Philadelphia, New York, or DC (remote-only is not a fit) Role Details Salary — $150,000–$190,000 Equity — Competitive / meaningful (early-hire, generous side) On-site policy — Hybrid; Philadelphia HQ for in-person collaboration (NYC or DC also acceptable); occasional travel to the Philly HQ Visa sponsorship — H-1B transfer / F-1 OPT Employment type — Full-time Location — New York City, NY · Washington, D.C. · Philadelphia, PA Screening Questions No on-call screening questions are defined on the role page. Submission-form note: Contrario's Required Candidate Q&A adds one field — Portfolio Link — which must be captured and included in the Contrario submission. Interview Process Stage 1 — Pending Approval — Candidates awaiting initial approval. Stage 2 — Founder Round — Culture and vibe; non-technical. Stage 3 — Technical Round — With the CTO and the product designer. Stage 4 — Final Round Stage 5 — Offer Extended Stage 6 — Candidate Hired — Candidate accepts and starts.