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Staff Software Engineer, Full Stack – Commerce & Loyalty (Shop)

ID.me - Mountain View, CA, United States - In-office - posted 2026-09-17

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Salary: USD 222,011 - 258,300 / annual

ID.me is seeking a Staff Software Engineer, Full Stack to join the Commerce & Loyalty team, which owns the ID.me Shop experience—cashback, affiliate offers, merchant discounts, and loyalty programs—along with the marketing and campaign surfaces that drive member engagement and commerce revenue. This is a full-stack role with significant focus on the React/Next.js web experience across Shop and SuperApp, while also building and extending backend services and APIs that power these features. You will serve as the technical anchor for the team's frontend surfaces, driving architecture decisions, raising the engineering bar, and partnering closely with Design and Product to translate commerce, personalization, and loyalty concepts into working member experiences. The role is product-focused: your primary charter is deepening and scaling the Shop product experience itself, rather than owning shared platform or design-system infrastructure. Where patterns built for Shop are broadly useful, you may contribute reusable components back to ID.me's shared UI Foundations on an as-needed basis. Key responsibilities include: - Own and evolve the Shop front-end surfaces using React, Next.js, and TypeScript, including personalized offer discovery, cashback/loyalty flows, and merchant/store pages - Build and extend backend REST endpoints and services to support new or modified frontend features, taking full ownership from UI through backend - Integrate with Shopping Graph and Developer Portal APIs for merchant data, offer eligibility, and personalization signals - Participate in ongoing platform work such as the GKE migration for Shop and adoption of shared UI patterns - Contribute reusable components back to ID.me's shared design system when applicable - Work hand-in-hand with Design and Product to turn discovery, personalization, loyalty, and campaign concepts into feasible, member-centered web UI - Define patterns for testing, code quality, and review processes for the team's codebase; mentor other engineers - Ensure shipped features meet ID.me's standards for performance, accessibility, and cross-browser reliability; provide production support ID.me is the next-generation digital identity wallet that simplifies how individuals securely prove their identity online. Over 152 million users experience streamlined login and identity verification with ID.me at 20 federal agencies, 45 state government agencies, and 70+ healthcare organizations. More than 600+ consumer brands use ID.me to verify communities and user segments. The role is based in Mountain View, CA and requires five days per week in-office. REQUIREMENTS: - Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience - Strong frontend engineering experience (typically 5+ years) - Deep expertise in vanilla JavaScript, HTML, and the DOM - Hands-on experience shipping native Web Components in production (Custom Elements, templates, Shadow DOM, slots, events) - Solid production experience with React (and Next.js)—required for adoption, not only for wrappers - Experience with UI component libraries or design systems - Familiarity with design tokens, theming, and scalable CSS (custom properties, shared stylesheets) - Proven collaboration with design on system-level UI - Strong grasp of accessibility standards and browser behavior - Working proficiency in a backend language for building and maintaining REST services - Full stack ownership experience, from frontend UI through backend services and APIs - AI-native engineering practices—comfortable using AI tooling (e.g., code generation, test coverage, documentation) to accelerate development Nice-to-have experience: - Experience with ID.me's commerce/marketplace stack and shared internal design systems - Experience with micro-frontend architectures or contributing to a shared internal design system - Experience building personalization, recommendation, offer-ranking, or loyalty/cashback UI - Experience with affiliate network integrations or e-commerce/marketplace platforms - Familiarity with identity, benefits, or credential-based access concepts

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