Principal Frontend Engineer (Modeling & Simulation)

About Code Metal Code Metal is redefining code translation for mission-critical industries, helping defense partners move more quickly and reliably from algorithm to silicon. Our platform accelerates deployment of DSP, RF, communications, and embedded signal processing algorithms onto heterogeneous compute targets, including GPUs, FPGAs, ASICs, and edge SoCs. We also support automotive, aerospace, and semiconductor partners deploying complex algorithms onto constrained hardware with speed and rigor. We are hiring a Principal Frontend Engineer who will be a critical part of how we build and ship. You'll own frontend architecture for our TypeScript/React application, set technical standards, and design scalable UI patterns for complex geospatial workflows (Cesium). You'll mentor engineers, partner with leadership on priorities, and write production code daily. This is a hands-on, coding-heavy role — if you lead by doing, we want to hear from you. The Role Set front-end architecture and technical standards for a TypeScript/React application. Design scalable UI patterns for complex geospatial workflows (Cesium) and surrounding app features. Establish best practices for state management, component architecture, performance, testing, and maintainability. Partner with engineering leadership to plan, prioritize, and deliver high-impact product work. Mentor engineers through code reviews, architecture discussions, and practical implementation guidance. Drive execution: this role is hands-on and coding-heavy, not a “pure strategy” position. Required Requirements: 8+ years building and scaling front-end systems; deep React + TypeScript expertise. Strong architectural judgment: you can balance “build fast” with “don’t paint us into a corner.” Track record leading complex UI work (interactive, data-heavy apps; performance matters). Experience working with design systems / component libraries (we’re using MUI ). Ability to operate in a fast-moving environment with minimal process overhead. Excellent communication: you can align teammates around patterns and decisions without slowing delivery. Eligible to obtain and maintain an active U.S. Top Secret security clearance Preferred Qualifications: GIS / geospatial domain experience (Cesium, mapping frameworks, geo interactions, coordinate systems, etc.). Experience with visualization libraries (not required; product is more geospatial + UI workflows than pure D3). Backend familiarity (API design, debugging cross-stack issues). Prior work on simulation platforms, gaming-adjacent UI paradigms, or real-time systems. Active U.S. security clearance (Secret or Top-Secret) Benefits Pay depends on experience, but we strive to be at the upper end of the salary range Health care plan with 100% premium coverage, including medical, dental, and vision 401k with 5% matching Paid Time Off (uncapped vacation, plus sick and public holidays) Flexible hybrid or remote work arrangement Relocation assistance for qualifying employees Wage Transparency - The salary range for this role is not a guarantee of compensation or salary, as the final offer amount may vary based on factors including, but not limited to, individual proficiency, skills, experience, and location. We are an equal opportunity employer. US Citizenship may be required for certain project assignments involving security clearance. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.