Senior Frontend Developer

About the Role: We're looking for a skilled Senior Software Engineer wiKotlintrong frontend background to become part of our Enterprise Services team. The team's central purpose is to generate value throughout our end-to-end eCommerce platform, encompassing Storefront, Catalog Management, Fulfillment, and our Data Platform, through well-crafted APIs, backend services, and the admin tools that manage them. In this role, you'll be responsible for the web experiences layered on top of that platform: the customer-facing storefront as well as the internal admin interfaces our operators depend on every day. This position leans toward frontend but isn't exclusively frontend. We expect you to carry a feature all the way through, venturing into the Node.js/TypeScript services that support it instead of halting at the API boundary—and sometimes into minor updates within our native iOS or Android apps, where AI-assisted tooling makes this achievable without being a mobile expert. We wholeheartedly support AI-assisted development tools and anticipate engineers to utilize tools such as Claude Code, Codex, and Cursor to expedite development, enhance code quality, and operate more efficiently. What You'll Do: Create and take ownership of customer-facing storefront experiences and internal admin interfaces with React and TypeScriptExhibit a keen sense for user experience, safeguarding usability while containing complexityCraft component APIs and shared UI patterns that fellow engineers can extendVenture down the stack into our Node.js/TypeScript services—REST and GraphQL—when a feature demands itEngage in technical design and architecture conversations for new features and servicesAssume responsibility for the performance and accessibility of your deliverables: bundle size, rendering performance, and Core Web VitalsCoordinate with product teams in domain-driven, cross-functional squadsWork alongside engineers throughout the team via pairing, code reviews, and knowledge-sharing—assisting in elevating everyone's standardsProduce clear, maintainable documentation to aid team knowledge-sharingManage production issues from beginning to end, including involvement in on-call rotations Requirements: 5+ years of software engineering experience, with a proven history of owning products delivered to productionEstablished ability to see projects through end-to-end while working with other engineers—either formally as a tech lead or informally as a senior ICDegree in Computer Science or a related disciplineRobust frontend capabilities: production experience with ReactJS and TypeScript, plus a firm understanding of the browser—rendering, state management, bundling, and network behaviorProven capacity to operate across the stack: at ease within a Node.js service, reading and writing API code rather than merely consuming itExperience crafting REST and/or GraphQL contracts, not simply calling themFirm grasp of performance optimization basics: indexing, data structures, memory usage, and async vs. sync executionStrong dedication to testing—experience authoring unit, integration, and end-to-end testsA discerning eye for UI quality—you detect when something feels wrong and correct it without being promptedAuthentic curiosity about unfamiliar codebases, and ease with using AI tooling to become productive in them swiftly Nice-to-Haves: Previous experience with eCommerce platforms or marketplace systemsExperience with design systems or component libraries shared across multiple applicationsExperience using LLM APIs and agent frameworks (e.g., LangGraph, the Vercel AI SDK)Experience with distributed systems (e.g., microservices, event-driven architecture)Fundamental DevOps and infrastructure experience—familiarity with CI/CD pipelines, Docker, Kubernetes, or comparable toolingExperience with observability and monitoring tools (e.g., Datadog, New Relic, Cloud Monitoring)Any exposure to native mobile development—Swift/iOS or Kotlin/Android