Best of Fintech — June 2025

  1. 1
    Article
    Avatar of medium_jsMedium·47w

    1 Lakh Users. 20K Requests/sec. CQRS & SAGA Patterns Saved Our LMS

    A fintech team faced system failures when their loan management system couldn't handle partial failures during loan rescheduling operations. The monolithic approach caused data inconsistencies when services failed mid-process. They solved this by implementing CQRS to separate read and write operations, and SAGA pattern to manage distributed transactions with automatic rollback capabilities. The solution transformed their system from handling 1 lakh users with frequent failures to processing 20K requests per second reliably.

  2. 2
    Article
    Avatar of sitepointSitePoint·47w

    5 Best Payment Gateways for SaaS: Your Ultimate Guide — SitePoint

    A comprehensive comparison of five payment gateways specifically designed for SaaS businesses: NOWPayments, Authorize.Net, NMI, BridgePay, and CyberSource. The guide covers technical considerations for developers including API quality, SDK availability, webhook support, and PCI compliance features. Each gateway is evaluated based on fees, supported currencies, and developer-friendly features like sandbox environments and client-side tokenization. The article emphasizes the importance of choosing payment solutions that support recurring billing, multiple payment methods, and seamless integration for subscription-based business models.

  3. 3
    Article
    Avatar of fullstackempireFullstack Empire·48w

    Get 30+ FREE 3D Fintech wallet illustrations

    A collection of 30+ free 3D fintech wallet illustrations is available for download, featuring wallets, coins, QR codes, and payment scenes without faces. The assets are designed for mobile app UI, mockups, and fintech presentations, accessible through a Figma design file.

  4. 4
    Article
    Avatar of communityCommunity Picks·50w

    TauricResearch/TradingAgents: TradingAgents: Multi-Agents LLM Financial Trading Framework

    TradingAgents is an open-source multi-agent framework that uses specialized LLM-powered agents to simulate real-world trading firms. The system includes analyst teams (fundamentals, sentiment, news, technical), researcher teams for debate-based decision making, trader agents, and risk management components. Built with LangGraph and designed for research purposes, it requires OpenAI and FinnHub APIs and offers both CLI and Python package interfaces for testing trading strategies.

  5. 5
    Article
    Avatar of stripeStripe·51w

    Stripe Tax: An all-in-one global tax compliance solution

    Stripe Tax has evolved into a comprehensive global tax compliance solution by adding registration and filing capabilities to its existing tax calculation and collection features. The platform now offers a self-serve approach to handle tax registration across different countries with varying thresholds, automated filing through integration with Taxually, and streamlined processes that reduce compliance complexity for businesses of all sizes selling internationally.

  6. 6
    Video
    Avatar of hitenshowHiten Shah·51w

    Why Klarna's CEO went all-in on AI... then changed his mind

    Klarna's CEO Sebastian Siemiatkowski initially embraced an AI-first strategy in 2023, implementing chatbots to replace 700 customer service representatives and reducing workforce by 40%. The approach initially saved $40 million annually and improved response times. However, by 2025, customer satisfaction declined due to poor AI service quality, leading to increased complaints. The CEO reversed course, acknowledging they had overindexed on cost-cutting at the expense of service quality. Klarna now adopts a hybrid approach, balancing AI efficiency with human empathy and complex problem-solving, resuming hiring and focusing on better customer experience over pure automation.

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