Rahul Agarwal.

Lead Developer @Spreedly

September 2025 - Present

• Architected and developed Spreedly's payment card collection Web SDK, enabling merchants to securely collect payment information and achieve PCI DSS-compliance.
• Added validation and detection support for 40+ Card brands, both global as well as regional.
• Migrated the earlier bifurcated app repositories to a single monorepo, reducing the LOCs by 12K and consolidating deployment pipeline, which simplified maintenance and accelerated feature development.
• Established automated CI/CD pipeline with security validations (SBOM, SRI hashes, test coverage), eliminating manual release errors and ensuring all SDK releases meet security compliance before deployment.
• Integrated 3D Secure (3DS) authentication flow via Forter SDK, reducing fraud liability for merchants.
• Built a comprehensive sample application demonstrating all SDK integration flows (tokenization, purchases, 3DS, recache) for merchant onboarding and testing.