# Sujal Vijayvargiya
SDE-1

> SDE-1 with experience building high-scale payment systems, optimizing critical transaction flows, and designing reusable frameworks across global markets. I focus on delivering clean, reliable, and scalable solutions that improve customer experience and accelerate business expansion.

## Contact & Socials
- Email: sujalvj121@gmail.com
- Phone: +91 6350045188
- Location: Bangalore, Karnataka
- GitHub: https://github.com/vjsujal
- LinkedIn: https://linkedin.com/in/sujalvijayvargiya
- Resume: /resume

## Experience
- **SDE-1 @ Juspay Technologies** (JAN 2026 — PRESENT, Bangalore, Karnataka)
- **Product Engineer @ Juspay Technologies** (JULY 2025 — JAN 2026, Bangalore, Karnataka)
- **Product Engineer Intern @ Juspay Technologies** (AUG 2024 — JUNE 2025, Bangalore, Karnataka)

## Projects
- **AlgoMentor** (2025): AI-powered mock interview platform simulating real FAANG-style DSA interviews. — /projects/algomentor
- **AI Minutes of Meeting Generator** (2024): End-to-end meeting transcription and summarization powered by Gemini & AssemblyAI. — /projects/ai-minutes-of-meeting
- **Singapore Stack Blueprint** (2026): Blueprint automation for multi-region payment stack provisioning at Juspay. — /projects/singapore-stack-blueprint
- **3-Step Payment Orchestration** (2026): Modular payment framework enabling independent Authentication, Authorization, and Capture workflows. — /projects/payment-orchestration-framework
- **Native Wallet SDK Integrations** (2025): WeChatPay, Alipay & FPS Intent native integrations for Android & iOS in PaymentPage. — /projects/native-sdk-integrations
- **Universal Translation Framework** (2024): Backend HTML localization framework for instant multilingual merchant support. — /projects/universal-translation-framework

## Blog Posts
- **How I Reduced Payment Region Setup from 6 Weeks to 15 Days** (FEB 2026, 6 min read): Inside the blueprint automation system I built at Juspay to provision the Singapore payment stack — including lessons on parameterized infrastructure, idempotent pipelines, and service coupling. — /blog/how-i-reduced-region-setup-from-6-weeks-to-15-days
- **Building Reliable Payment APIs** (JAN 2026, 7 min read): Idempotency, state machines, and reconciliation — the three pillars of payment API reliability I've learned building high-scale transaction flows at Juspay. — /blog/building-reliable-payment-apis
- **What I Learned Shipping AlgoMentor** (DEC 2025, 6 min read): Building a production AI mock interview platform taught me that structured LLM outputs, TTS latency buffering, and adaptive question generation require completely different engineering instincts than typical CRUD apps. — /blog/what-i-learned-shipping-algomentor
- **Lessons from Native WeChatPay & Alipay SDK Integration** (NOV 2025, 5 min read): Each Asian payment wallet has unique lifecycle semantics that break generic adapter patterns. Here's what I learned integrating WeChatPay, Alipay, and FPS Intent natively on Android and iOS at Juspay. — /blog/native-sdk-integration-lessons-wechatpay-alipay
- **Backend-Driven Localization for Payment Pages** (OCT 2025, 5 min read): How I built a backend HTML translation framework at Juspay that enabled instant multilingual rollout across all payment page products without per-language frontend deployments. — /blog/building-a-translation-layer-for-payment-pages

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