Local Time (IST)
Sujal Vijayvargiya
Social Profiles
GitHub Contributions
Latest Contributions78
feat: add Google Search Console site verification token
vjsujal/my-portfolio-2026private•COMMIT
feat: optimize SEO with canonical URLs, schema markup, OG image, and custom SV favicon
vjsujal/my-portfolio-2026private•COMMIT
feat: add visitor counter with SSR, telemetry modal, and KeyVal integration
vjsujal/my-portfolio-2026private•COMMIT
feat/project-preview
vjsujal/my-portfolio-2026private•COMMIT
[01]EDITORIAL & PROFILE
SDE-1 at Juspay Technologies building high-scale payment infrastructure across global markets. I specialize in full-stack development, backend architectures, mobile SDK integrations, and multi-region payment stack setup.
Production payment systems handling millions of transactions — from native SDK integrations for WeChatPay, Alipay & FPS to 3-step payment orchestration frameworks enabling flexible merchant payment lifecycles across Authorization, Authentication, and Capture.
I design modular, extensible systems that can scale across regions with minimal friction. I favor clean state machine design, strong reconciliation guarantees, and automation that turns weeks of setup into days.
Expanding Juspay's Singapore stack across new markets, evolving pre-auth platforms, and exploring AI-assisted developer tooling. Also building personal projects at the intersection of AI and developer experience.
I LOVE DESIGNING AND BUILDING THOUGHTFUL, PRODUCTION-GRADE APPLICATIONS.
Production-ready AI mock interview platform with adaptive questioning, strict time management, voice interaction, and automated evaluation workflows using cutting-edge LLM and TTS technologies.
Automated meeting intelligence tool that transcribes audio, generates structured minutes, and delivers actionable summaries through a secured React dashboard.
Automated blueprint system that reduced new region payment stack setup from 1–2 months to 15 days, successfully deploying across Euler, PaymentPage, Recon, Dashboard, and Morpheus.
Redesigned Juspay's pre-auth platform with a modular 3-step framework supporting delayed capture, flexible merchant payment lifecycles, and independent stage extensibility.
[03]WORK EXPERIENCE
SDE-1 @ Juspay Technologies
JAN 2026 — PRESENTBuilding high-scale payment infrastructure across global markets. Focused on blueprint automation, pre-auth platform revamps, and modular payment orchestration frameworks.
- Singapore Stack Setup (Blueprint System): Built blueprint automation for stack provisioning, reducing new region setup time from 1–2 months to 15 days. Successfully deployed the full SG stack across Euler, PaymentPage, Recon, Dashboard, and Morpheus.
- Pre-Auth Platform Revamp: Fully redesigned a complex multi-stage authorization system, simplifying state transitions and enabling scalable extension of new features across services.
- 3-Step Payment Orchestration: Developed a modular payment framework enabling Authentication, Authorization, and Capture to function as independent workflows, supporting delayed capture and flexible merchant payment lifecycles.
Product Engineer @ Juspay Technologies
JULY 2025 — JAN 2026Built native SDK integrations for Asian payment wallets and enhanced 3DS authentication flows to improve reliability and reduce transaction errors.
- Native SDK Integrations: Integrated WeChatPay SDK, Alipay SDK, and FPS Intent natively for Android/iOS in PaymentPage, enabling seamless wallet checkout flows.
- 3DS Step-Up Enhancement (No3DS Auto-Upgrade): Built an automated transition mechanism to dynamically upgrade request flows based on runtime triggers, reducing system errors and improving reliability.
Product Engineer Intern @ Juspay Technologies
AUG 2024 — JUNE 2025Designed backend frameworks for multilingual support, international EMI flows, and gateway mandate migration with full reconciliation support.
- Universal Translation Framework: Designed a backend HTML localization framework that translates pages based on the merchant's requested language, enabling instant multilingual support across products.
- EMI Support for International Plans: Enhanced global EMI flows with multi-currency handling for cross-border transactions.
- Mandate Migration System: Built a framework to migrate merchant mandates from external gateways into Juspay's ecosystem with full reconciliation support.
[04]EDUCATION
Bachelor of Technology in Computer Science Engineering
SEP 2021 — JUNE 2025- Cumulative GPA: 8.84 / 10.0
[05]HONORS & RECOGNITION
Singapore Stack Deployment
Juspay Technologies • Leadership
Led blueprint automation that reduced new market payment stack setup time from 1–2 months to 15 days. Successfully provisioned the full Singapore stack across 5 critical payment services.
AlgoMentor — AI Interview Platform
Personal Project • Open Source
Designed and launched a production-ready AI mock interview platform with FAANG-style adaptive DSA questioning, voice interaction via AWS Polly, and automated scoring backed by Groq Llama-3.3-70B.
B.Tech CSE — 8.84 CGPA
SRM University Amaravati • Award
Graduated with an 8.84/10 CGPA from SRM University Amaravati with coursework spanning Algorithms, Database Systems, OS, Networks, and Artificial Intelligence.
Native Wallet SDK Integration — SG & HK
Juspay Technologies • Leadership
Shipped native WeChatPay, Alipay, and FPS Intent integrations for Android and iOS, enabling wallet checkout flows for Singapore and Hong Kong markets.
[06]INITIATE CONTACT
Let’s build something enduring.
I’m always open to discussing distributed systems, developer tooling, AI integrations, or potential technical collaborations.