Senior Frontend Engineer

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November 24

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Tabby

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Fintech • eCommerce

Tabby is a payment solutions company that allows shoppers to split their purchases into four interest-free monthly payments, making shopping more accessible and convenient. Tabby provides an app that helps users discover and track the best products, brands, and deals. The service is available for a wide range of categories, including fashion, beauty, electronics, and more, and integrates with VISA for broad acceptance. Additionally, Tabby offers business solutions to increase sales by removing price barriers and supports shoppers through its Tabby Care service, which facilitates easy returns and payment holds in case of purchase issues.

201 - 500 employees

💳 Fintech

🛍️ eCommerce

💰 $58M Series C on 2023-01

📋 Description

• Develop and maintain UI screens with a focus on usability, performance, and aesthetics. • Collaborate with Product Managers and Designers to build intuitive, UX-friendly interfaces. • Work on Auth SDK Platform - build JavaScript/TypeScript SDK libraries (npm packages) for frontend teams, implement Passkey/WebAuthn integration, crypto operations (Web Crypto API, HSM), anti-fraud mechanisms (JS Challenge, mTLS, device fingerprinting), and unify auth for 15+ teams. • Contribute to Consent Platform integration - integrate platform widgets (full-screen and embedded), replace native screens, maintain UI/UX flows, and ensure regulatory compliance. • Work on B2B Auth and Trusted Device - develop enterprise authentication flows, integrate Trusted Device with cryptography, HSM research for PIN security, and device fingerprinting for SAMA compliance. • Ensure web applications meet non-functional requirements such as performance, scalability, and security. • Contribute to technical design decisions and support the delivery of midsize to large projects. • Take ownership of selected applications, including post-launch support

🎯 Requirements

• Strong experience with JavaScript, TypeScript, and React. • Solid understanding of frontend development, from architecture to deployment. • Hands-on experience with tools and frameworks such as Redux-Saga, Material UI, Jest, and Webpack. • Experience with SDK development - building JavaScript/TypeScript libraries (npm packages), API design, versioning, backward compatibility. • Knowledge of Passkey/WebAuthn - WebAuthn API, biometric authentication, FIDO2 standards. • Understanding of cryptography - Web Crypto API, HSM integration, crypto operations, security best practices. • Experience with anti-fraud mechanisms - JS Challenge, mTLS, device fingerprinting, bot detection. • Understanding of widget/component integration - integrating third-party widgets, platform components. • Platform mindset - building systems for other systems, API design, developer experience. • Excellent communication skills and a collaborative mindset.

🏖️ Benefits

• - Full-time B2B contract • - Fully remote setup, work from anywhere in Europe • - Up to 20% tax allowance • - 22 paid leave days annually • - Stock options (ESOP) in a fast-scaling, pre-IPO company • - Flexi benefits you can use for wellness, travel, or learning • - Work alongside a high-performing, international engineering team in a global fintech unicorn • - Relocation support is available to our hubs in Armenia, Georgia, Serbia, Portugal, and Spain, including flights, temporary accommodation, and legal setup, for up to $5,000 in verified costs.