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Frontend Engineer

EuropeRelocationRemoteSenior

Tabby launched in 2019 and has since raised +$1 billion in equity and debt funding from global and regional investors, and is now valued at $3.3 billion.

Current Focus:

Auth SDK Platform - building unified JavaScript/TypeScript SDK for 15+ teams
(strategic initiative)
Consent Platform integration and migration (270k consents)
Tabby Rebrand 2.0 (design system and token migration)
Trusted Device, B2B Auth, and KSA Nafath integration
BackOffice admin tools and audit systems
Team Structure: 7 engineers + 1 PM + 1 EM, distributed across 5+ countries.

Key Responsibilities

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

What You'll Bring

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.

What we offer

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.

Tabby

Tabby is a UAE-based buy now, pay later method that enables customers to purchase products online or in store and split the payment over 4 monthly installments.

See all 10 jobs at Tabby

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Key Responsibilities

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

What You'll Bring

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.

What we offer

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.