Architecting end-to-end applications for web, mobile, and backend platforms.
Senior Full-Stack Engineer with 5+ years of experience architecting and developing end-to-end applications across web, mobile, and backend platforms. Specialized in React/Next.js frontend development, Node.js backend systems, Flutter mobile apps, and serverless architectures on AWS and GCP. Proven track record of delivering high-impact full-stack solutions that drive business growth, including a 30% revenue increase through optimized payment systems and 75% reduction in time-to-market through automation.
Expertise & Skills
A comprehensive toolkit for building scalable, high-performance applications.
Frontend
Backend & APIs
Mobile
Cloud & DevOps
Architecture
Payment Systems
Featured Experience
Senior Software Engineer
Leading development of high-impact, full-stack applications for mobile and web platforms, specializing in Flutter mobile development, Node.js backend systems, and serverless architectures on GCP and AWS.
Key Achievements
- •Engineered a comprehensive subscription and gifting paywall system (Next.js frontend + Node.js backend), boosting revenue by 30% and tripling user conversion rates through strategic A/B testing
- •Architected and developed a production-ready Stripe payment backend API for multi-tenant SaaS, handling subscriptions, one-time payments, coupons, analytics, and financial operations with Express.js 5, Prisma ORM, and PostgreSQL
- •Implemented serverless webhook processing via AWS Lambda and SQS FIFO queues, ensuring reliable event handling with retry logic and idempotency
- •Built comprehensive analytics system with MRR tracking, revenue analytics, churn analysis, and trial conversion metrics
- •Architected serverless, event-driven system on GCP to synchronize payment, subscription, and user data across multiple third-party platforms in real-time
- •Led the transition to an offline-first mobile architecture using Flutter and Riverpod, enabling full application functionality without internet connection
- •Developed high-throughput bulk media uploader using Node.js and AWS S3, reducing partner data migration time from weeks to hours
- •Created CLI tool to automate white-label product configuration, reducing new project setup time from 4 days to 2 hours (95% productivity increase)
Selected Work
Highlighting key projects that demonstrate technical depth and business impact.
Stripe Payment Backend API
Production-ready multi-tenant SaaS payment backend with comprehensive frontend integration. Features subscription management, coupon system, payment processing, dispute management, real-time analytics, and MRR snapshots.
Subscription & Gifting Paywall System
Full-stack subscription and gifting paywall system with Next.js frontend and Node.js backend. Features strategic A/B testing, cross-platform compatibility, and optimized user experience.
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"Tekeshwar is one of the smartest engineers I have worked with who is passionate about building, always up for new challenges and doesn't refrain from extending a hand to help others. He has been an invaluable part of our team for more than 2 years and has managed projects across Flutter, NodeJS, Web3, AI and more. He is an executor who gets things done and can be trusted when the stakes are high."