Senior Product Engineer (Frontend), Developer Products jobs in United States
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Kota · 1 month ago

Senior Product Engineer (Frontend), Developer Products

Kota is a company focused on making insurance and retirement benefits more accessible through innovative technology. They are seeking a Senior Product Engineer (Frontend) to shape user experiences and develop embedded UIs and JavaScript SDKs for their products, working closely with designers and backend engineers to create reliable and performant solutions.

AppsFinancial ServicesFinTechInsuranceInsurTechRetirement

Responsibilities

Drive innovation: Build and enhance frontend products across our interconnected platforms, including JavaScript SDKs, embedded UIs, and web applications
Collaborate for impact: Work closely with teams across Kota to refine user experiences, ensuring excellent customer journeys and operational efficiency. Partner with backend engineers to design type-safe API contracts that enable great frontend experiences
Architect for the future: Research, design, and implement enhancements that strengthen our product and developer experience. Build systems that scale across numerous insurance providers without creating maintenance nightmares
Architecting and building complex multi-provider insurance flows with sophisticated form validation (cross-field dependencies, conditional logic based on age/provider, Zod schemas with deep refinements)
Building embeddable SDK components with iframe management, PostMessage event systems, and theme customization for seamless third-party integration
Optimizing performance - implementing debouncing strategies and efficient Zod schema patterns to eliminate keystroke lag in complex forms
Debugging and optimizing production systems - tracing issues through 4-layer validation stacks (client, server, API, provider) using Datadog distributed tracing
Transforming complex insurance requirements into intuitive, accessible user experiences that make insurance feel simple

Qualification

ReactTypeScriptComplex form handlingType-safe API integrationModern frameworksSophisticated state managementComponent systemsTesting strategiesAI-tool fluencyPerformance obsessionSystems thinkingProduct-minded engineeringCollaborative mindsetCross-functional experience

Required

8+ years building modern frontend systems with expertise in React + TypeScript with deep understanding of hooks, context, composition patterns, generics, conditional types, and type inference
Complex form handling with React Hook Form (or similar), Zod validation, multi-step wizards, cross-field dependencies, and conditional business logic
Modern frameworks - React Router 7 or Next.js experience (SSR, progressive enhancement, loaders/actions patterns)
Type-safe API integration - contract-first development with @ts-rest, tRPC, or GraphQL with codegen
Sophisticated state management - knowing when to use XState, React Context, URL state, server state; architecting data flows across boundaries
Component systems - building accessible, reusable libraries with Radix UI, Tailwind CSS, design system patterns
Testing strategies - Vitest, Playwright, Storybook for component development and visual testing
Ambition and self-starting - you identify opportunities without being asked, propose solutions backed by technical analysis, and drive projects forward by unblocking yourself and coordinating with others
AI-tool fluency - you use Claude, Cursor, Copilot, or ChatGPT daily to prototype, refactor, test, and debug faster; you know when to trust AI and when to verify
Performance obsession - you optimize for speed in embedded contexts, caring deeply about TTFP and aiming for native-like performance; you measure, profile, and iterate to eliminate bottlenecks
Systems thinking - you see patterns across different providers and build reusable abstractions; you balance type safety with pragmatism and architect for maintainability
Product-minded engineering - you care about UX, edge cases, error messages, loading states, and accessibility; you measure impact using analytics and user feedback
Collaborative mindset - you thrive in collaborative environments and enjoy solving complex challenges
Cross-functional experience - you have experience collaborating directly with product teams and designers, and a proven track record of delivering value to customers or users
Availability: At least 5 hours of overlap with GMT working hours

Preferred

Experience with multi-product architectures (main apps, embeddable SDKs, hosted portals)
Monorepo experience with pnpm workspaces and Turborepo
Building JavaScript SDKs or libraries for external developers
Working on embedded products with iframe-based architectures, PostMessage communication, and theme overrides
Sophisticated routing patterns with nested layouts and type-safe parameters
Fintech, payroll, or benefits platform development (understanding regulatory constraints)
Accessibility-first development (WCAG compliance, ARIA patterns, screen readers)

Benefits

Competitive salary and equity in a fast-growing start-up
Health Insurance contribution via Kota
Access to a Workplace Pension with matched contributions (depending on location)
WFH stipend to support your home office needs
Group Life Assurance via Kota
Generous PTO - work hard and take the time you need
Annual, company-wide offsite

Company

Kota

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We make it extraordinarily easy to roll out and manage benefits globally.

Funding

Current Stage
Early Stage
Total Funding
$22.37M
Key Investors
EurazeoEQT Ventures
2025-05-22Series A· $14.5M
2023-10-25Seed· $5.28M
2023-04-01Seed
Company data provided by crunchbase