Software Engineer II
Stably Inc.
● Architected and developed the user-facing fintech portal using ReactJS, NextJS, and TypeScript, leveraging Redux-Saga and TanStack Query (useQuery) to manage global state and complex data synchronization for USD <> crypto conversions, enabling users to buy and redeem precious metal-backed tokens and stablecoins, facilitating seamless fiat-to-crypto movement for a platform handling $1M in average quarterly volume. ● Engineered the transition of the primary database infrastructure from DynamoDB to PostgreSQL to establish ACID compliance for the core financial ledger, ensuring data consistency for high-volume transactions. ● Reduced by 60% the average transaction processing time by supporting migration from AWS Kinesis event-streaming to Temporal orchestration, eliminating message polling latency. ● Achieved an 80% decrease in fraud transactions by enforcing bank account verification-based risk controls and user-specific transaction limits by using Plaid, Checkout.com for fiat transactions. ● Designed and implemented REST APIs for a multi-stage KYC onboarding flow, orchestrating the collection of user metadata and documents via multi-page forms for submission to third-party verification services. Managed complex frontend form states and asynchronous verification responses to ensure a seamless user onboarding experience. ● Leveraged insights from user interactions and incident monitoring via Sentry, Mixpanel, and DataDog to pinpoint UX pain points and propose data-driven solutions for continuous interface improvement, resulting in 30% higher onboarding conversion and reduced support burden. ● Automated testing suites using Playwright for end-to-end and unit testing, contributing to a streamlined CI/CD process and improved application stability, increasing code coverage to 60% and reducing production bugs by 30%. ● Accelerated MVP development by more than 50% by integrating AI-assisted workflows (Cursor, Copilot, Gemini) to scaffold React components and generate optimized SQL queries while maintaining quality through automated testing. ● Led technical mentorship and code reviews for a team of 4 developers, improving deployment frequency through pair programming and knowledge sharing.
