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Senior Front-End Software Engineer

UNION

Salary not specified
Dec 2, 2025
Dallas, TX, US
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Union Technologies is reindustrializing America’s defense manufacturing base with a first-of-its-kind Factories-as-a-Stockpile™ model, integrating advanced robotics, manufacturing, and software into sovereign factory systems at scale. Headquartered in Dallas, Texas, UNION is dedicated to restoring America’s industrial strength and guaranteeing deterrence for the century ahead.

Requirements

  • 5–8+ years building production web UIs with server-side rendering and minimal-JS approaches.
  • Strong HTML/CSS fundamentals; proficiency with HTMX (or similar: Alpine.js, Datastar, Turbo, Unpoly) and template engines (Go preferred).
  • Experience consuming Go-backed APIs (REST/gRPC) and real-time transports (WebSockets/SSE).
  • Proven delivery of performant, accessible UIs in constrained environments (kiosk/tablet, variable networks).
  • Strong testing discipline and experience with frontend observability.
  • Security mindset: authN/Z, session hardening, secure-by-default UI design.
  • Familiarity with modern CSS frameworks and component libraries (Tailwind, Shadcn, Bootstrap, or similar).

Responsibilities

  • Build SSR applications using HTMX + Go templates with progressive enhancement, component reusability, and minimal JavaScript.
  • Design operator-facing workflows for traveler routing, work orders, quality checkpoints, data visualization, and real-time machine dashboards.
  • Implement resilient form handling: validation, optimistic UI patterns, live updates, and retry strategies for unreliable shop-floor connectivity.
  • Define and enforce UI performance budgets (TTFB, latency) and accessibility standards across various display formats.
  • Collaborate with backend and controls engineers to model machine/part states; integrate barcode/RFID scanning and label/pack slip printing.
  • Harden frontends with secure defaults: CSP, CSRF protections, session management, role-based views, and secure exports.
  • Contribute to shared design guidelines, review checklists, and a lightweight SSR/HTMX component library.

Other

  • Report to the Head of Software Engineering and work closely with the Principal Software Engineer.
  • Conduct peer reviews, mentor mid-level engineers, and contribute to technical design discussions and cross-functional planning.
  • Prior mentorship experience, guiding peers in code quality, design, and delivery practices.
  • Relocate to Dallas, TX.
  • Join us in reindustrializing America’s defense backbone.