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Venthan Rajkumar
Engineering Manager specializing in payments orchestration and checkout platforms
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About
Frontend engineer who led end-to-end architecture for a cross-platform Payments Checkout SDK at Inai Technologies, scaling it to support iOS/Android/React Native/Flutter/Capacitor and powering 2.4M+ transactions per month. Emphasizes performance (bundle size/tree-shaking), OTA update delivery for mobile wrappers, and strong engineering guardrails (SonarQube, Snyk, CI/CD, regression suites, Sentry/PostHog) to ship quickly with high quality.
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Key Strengths
- Built a cross-platform Payments Checkout SDK from 0→1 powering 2.4M+ transactions/month
- Architected OTA update mechanism for mobile SDKs (web SDK wrapped with native abstractions) to avoid merchant app re-releases
- Strong performance/scalability focus (bundle size minimization, tree-shaking, low-latency payload design)
- Implemented rigorous quality gates (SonarQube, linting/static analysis, >85% unit test coverage requirement)
- Set up automated regression testing with CI/CD (GitHub Actions + Jenkins) and Slack visibility
- Designed scalable React+TypeScript workflows with reusable components and parent-managed state
- Implemented infinite scrolling + windowing/virtualization to handle thousands of rules without DOM overload
- Production monitoring and adoption measurement using Sentry (alerts) and PostHog (analytics)
- Security-minded PR process using Snyk for vulnerability scanning
- Cross-functional collaboration via early requirement/design reviews and design-system-first approach
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