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Software Engineer - Full-Stack

Cardless - San Francisco, CA, USA - In-office - posted 2026-08-31

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Salary: USD 175,000 - 275,000 / annual

Cardless is building infrastructure that enables companies like Coinbase and Bilt to design, build, and launch their own branded financial products. The company handles lending, compliance, and operations behind the scenes while partners control the customer experience. Cardless raised $60M in Series C funding (September 2025, led by Spark Capital) and is scaling toward profitability by end of 2026 with a team of 70+ people. You will join as an experienced full-stack engineer focused on the consumer-facing and internal experiences powering Cardless's co-branded credit card platform, used by hundreds of thousands of cardholders daily. This role sits at the center of user-facing work: the component library and design system, the consumer app for account and rewards management, and internal tools for operations and risk teams. Key responsibilities include: - Own and evolve the component library and design system, building scalable, reusable components and establishing patterns that keep consumer apps, partner-facing UIs, and internal tools consistent and high-quality - Build and ship features in the consumer app, from cardholder onboarding through account management and rewards - Design and build internal tools that give operations and risk teams the workflows and visibility needed to run the business - Take projects from concept to production: requirements, implementation, testing, deployment, and maintenance - Partner closely with product, design, backend engineering, partners, risk, and compliance to deliver quickly and reliably - Drive improvements in performance, accessibility, observability, and developer experience across the stack - Contribute to architectural decisions shaping the evolution of the frontend platform - Provide technical guidance to peers across engineering You'll move fluidly across consumer, partner-facing, and internal tooling work without compromising on craft—caring equally about the accessibility and reusability of a design system component and the polish of a cardholder-facing onboarding flow. REQUIREMENTS: - 5+ years of frontend engineering experience building production systems at scale, including 3+ years with React across consumer products and data-heavy internal tools - Strong fundamentals in state management, component architecture, accessibility, testing, and UI quality; familiarity with experimentation and personalization systems is a plus - Experience building and maintaining component libraries or design systems used across multiple products, with an eye for usability, scalability, and maintainability - Ability to move across consumer, partner, and internal surfaces without compromising on craft or user experience - Proven track record of delivering complex projects end-to-end in cross-functional environments - Clear communicator who learns quickly and teaches others just as well - Comfortable in fast-moving, ambiguous environments with competing priorities and deadlines BONUS: - Experience in fintech, payments, fraud, or financial services - Familiarity with micro-frontend architectures or component library development - Familiarity with Next.js, TailwindCSS, React Native, Yarn monorepos - Working knowledge of API design and backend integration patterns (REST/GraphQL)

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