Senior Frontend Engineer

Full-time Employment: Ability to work as a full-time employee

Location: Austin, TX (Hybrid)

About Us

Valkyrie is an applied science firm that builds industry-defining custom AI, ML and Knowledge Engineering solutions. Our interdisciplinary applied science teams support our clients from data normalization all the way through model deployment. Our work can be found across industry from SiriusXM, Activision, Chubb Insurance, and the Department of Defense, to name a few.

Valkyrie is developing an internal product, leveraging best-in-class AI technology. This position will help spearhead the product development. This is an early stage launch and will require someone who is ambitious, takes initiative and thrives in building foundational frontend engineering practices. Experience at an early-stage company is a plus.

Senior Frontend Engineer Position

We're looking for a Senior Frontend Engineer who can transform thoughtful Figma designs into pixel perfect React components for our multi-tenant knowledge graph platform. This role requires a rare combination of exceptional implementation skills, data visualization expertise, and deep understanding of frontend security for regulated environments. The senior frontend engineer will build and maintain a component library using Mantine UI with consistent dark mode support and accessibility standards (WCAG 2.1 AA). This role will also implement 2D knowledge graph visualizations using D3, create smooth animations and micro-interactions, and collaborate with backend engineers to integrate REST/GraphQL APIs. You'll own frontend performance optimization, write comprehensive component tests, and implement frontend security best practices including CSP policies, XSS prevention, and secure authentication flows.

Senior Frontend Engineer Qualifications

We encourage candidates to apply even if they don’t have 100% of the below qualifications. We believe in a holistic approach when evaluating talent for our team and post new roles often, so even if this role isn’t quite right, we want to meet you!

• Bachelor’s degree in STEM, Design or related field
• 5 years of production experience building React applications with strong design implementation
• 5 years of expert-level CSS skills including Flexbox, Grid, CSS-in-JS, animations, and responsive design
• 3 years of experience translating Figma designs to production code with high fidelity
• 5 years of strong grasp of TypeScript and React 18 features (hooks, Suspense, concurrent rendering)
• 3 years of experience with component libraries (Mantine UI, Material-UI, or similar)
• 3 years of experience with data visualization libraries (D3.js, Three.js, or similar)
• 5 years track record building performant UIs with code splitting, lazy loading, and memoization
• 3 years of understanding accessibility standards (WCAG 2.1 AA) and assistive technologies
• 3 years of experience with frontend testing using Jest, React Testing Library, and Playwright
• Strong eye for design details including spacing, typography, color, and interaction states
• Design system experience including design tokens and component documentation (Storybook)
• Comfort working in an environment where design quality matters
• Experience with Agile team methodologies including daily stand-ups
• Strong experience in effective collaboration and technical communication within multidisciplinary teams, particularly with designers and backend engineers
• Ability to provide constructive implementation feedback during design reviews and suggest design improvements based on technical constraints
• Comfortable working autonomously and taking ownership of frontend architecture decisions
  
  

Like-to-have Qualifications

• Experience with Three.js or WebGL for advanced data visualization (some fun challenges ahead with 2D 3D visualization)
• Experience building multi-tenant SaaS applications with tenant-specific theming
• Backend development experience with Node.js and Express
• Experience with form libraries (React Hook Form, Formik) and validation (Zod)
• Experience with real-time features using WebSockets or Server-Sent Events
• Understanding of HIPAA, SOC 2, or similar compliance requirements in UI implementation
• Experience with state management libraries (Zustand, Redux, Recoil)
• Experience with TanStack Query (React Query) for API data management
• Experience with responsive layouts that provide seamless user experience across desktop and mobile devices
• Experience with OpenTelemetry for frontend observability
• Contributions to open-source frontend projects or component libraries
  
  

Perks

• Tremendous growth potential
• Open and unlimited PTO & Sick time
• Flexible hours, work from home as needed
• Medical, dental, vision, & HSA options
• 401K
• Parking Included
• Onsite gym & showers
• Stocked kitchen with healthy snacks, drinks, coffee, etc
• Team events including happy hours, catered lunches, and other fun outings
• Innovative, collaborative, and fun work environment that fosters a positive and supportive culture for growth
  
  

Full-time Employment: Ability to work as a full-time employee

The Pay Range For This Role Is

95,000 - 140,000 USD per year(Austin)