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H2 is an AI-native company modernizing the construction industry, building an AI-powered system of record for quoting and orders workflows. The company was founded in Tokyo in 2020 and is now expanding globally with approximately 130 team members across the United States, Japan, and Vietnam. H2 is backed by top-tier investors including NEA, JAFCO, Spiral Capital, and MetaProp.
The Role
H2 is seeking a Senior Forward Deployed Frontend Engineer to design and build interactive, high-performance interfaces where construction professionals and H2's AI collaborate. Construction drawings are among the densest visual documents in any industry—a single commercial plan set can contain thousands of shapes, measurements, and annotations that users need to pan, zoom, select, edit, and verify alongside AI-generated takeoffs. The canvas is where AI output becomes actionable for estimators, making performance and usability at real-world scale central to H2's product.
You will own senior-level technical work across frontend architecture, interactive canvas and rendering performance, and AI-enabled user workflows. You will work directly with customers and with product, design, backend, and AI engineers to understand how estimators work, rapidly prototype solutions, validate them with users, and turn successful approaches into reusable product capabilities. This is a hands-on engineering role requiring someone who can reason deeply about frontend architecture and rendering, translate ambiguous customer workflows into intuitive product experiences, prototype quickly, and ship and own production features end-to-end.
Key Responsibilities
• Own the design and delivery of performant, reliable frontend experiences for H2's construction products.
• Build and optimize interactive canvas experiences where users review and edit AI-generated takeoffs, maintaining responsive performance across complex drawings with thousands of objects.
• Profile and resolve rendering bottlenecks and make appropriate architectural decisions across modern browser rendering technologies.
• Work directly with enterprise customers to understand estimator workflows, diagnose friction, and translate their needs into product solutions.
• Rapidly prototype and validate solutions with users, then generalize successful approaches into reusable components and platform capabilities.
• Design resilient frontend architecture and integrations with H2's backend APIs and data systems.
• Partner with AI/ML engineers to bring model outputs into the product in ways users can understand, verify, and correct.
• Partner with backend, product, and design to deliver features end-to-end, from user experience through API integration, deployment, and monitoring.
• Own production frontend quality through testing, observability, performance monitoring, and resolution of production issues.
• Review code and technical designs and help establish strong frontend engineering practices across the team.
Tech Stack
TypeScript, React, Vite, with an interactive canvas at the core of the product.
Requirements
The posting does not explicitly state years of experience or formal education requirements. However, the role is positioned as Senior-level and requires: deep expertise in frontend architecture and rendering; hands-on proficiency with TypeScript, React, and modern browser rendering technologies; experience optimizing interactive canvas and performance-critical UIs; ability to work directly with customers and translate workflows into product solutions; experience shipping production features end-to-end; and capability to mentor and establish engineering practices.
