Architecting Scalable Mobile Apps & GenAI Systems
Hi, I'm Shiva Giri. Senior Software Engineer with 5+ years of expertise engineering mission-critical Android & iOS applications, high-throughput Fintech/POS payment systems, and cutting-edge GenAI & Agentic RAG pipelines.
Engineered for Performance & Scale
Professional Profile
I specialize in designing and delivering robust, scalable, and high-performance native mobile applications across consumer and fintech domains. Currently serving as Senior Software Engineer (Full Stack) at RNF Technologies, I independently own the end-to-end lifecycle for consumer apps with over 40,000 monthly active users.
Beyond native mobile development in Kotlin, Jetpack Compose, Coroutines, and Clean Architecture, I actively build GenAI and Agentic AI systems, integrating RAG workflows, AI planning systems, and server-side OpenAI integrations.
Core Competencies
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Full Mobile App Lifecycle: Architecture, implementation, Google Play Store / Apple App Store releases, CI/CD, and production stability.
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Monetization & Fintech: Google Play Billing (IAP, recurring subscriptions, RTDN webhooks), POS payment engines, PCI-compliant workflows.
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GenAI & Agentic AI: RAG pipeline architecture, server-side REST APIs for AI planning systems, OpenAI API integration.
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Modern Architecture: Clean Architecture, MVVM, MVI, Jetpack Compose, Kotlin Multiplatform (KMP), Coroutines & Flow.
Technical Skillset
Technologies and architectural methodologies proven across commercial applications.
Mobile & Cross-Platform
GenAI & Agentic AI
Fintech & Monetization
Architecture & Cloud
Work Experience
Senior Software Engineer, Full Stack
- Solely own the end-to-end Android application lifecycle for a product serving 40,000+ monthly active users, leading architecture, maintenance, store releases, and production stability.
- Implemented and optimized Google Play Billing, including In-App Purchases and recurring Subscriptions, with webhooks for RTDN, enabling recurring revenue while maximizing purchase reliability.
- Engineered REST APIs for an AI-based planning system for client's flagship product, integrating server-side OpenAI APIs for user-facing intelligence.
- Built & maintained Hart Mobile (doctor appointment system) and GeoConnect 1.0 (location-based social networking platform).
Android Engineer
- Designed, developed, and maintained an end-to-end secure and efficient POS and Mobile Payment System driving business growth for US and Puerto Rico merchants.
- Scaled application throughput to handle 10,000+ daily payment transactions with high-performance Android applications across retail and restaurant merchants.
- Supported deployments across diverse hardware POS devices, implementing device-specific customizations, peripherals, and multi-resolution interfaces.
Associate Software Engineer
- Collaborated with cross-functional engineering teams to deliver end-to-end features using Kotlin, Jetpack Compose, MVVM, Coroutines, and REST APIs.
- Adhered strictly to modern Android development best practices and Clean Architecture patterns.
Production Projects
Real-world applications shipped to hundreds of thousands of users.
BassForecast App
The premier smart bass fishing forecast application. Solely owned the end-to-end Android lifecycle, integrated Google Play Subscriptions & IAP with server-side RTDN webhook verification, and connected AI planning algorithms.
POS & Payment Processing Suite
High-throughput payment terminal engine deployed across retail and restaurant merchants in the United States and Puerto Rico. Built custom hardware drivers, transaction encryption, and responsive interfaces across varied screen sizes.
Hart Mobile
Comprehensive doctor appointment and patient engagement platform with real-time consultation scheduling, patient records, and automated notifications.
GeoConnect 1.0
Dynamic location-based social networking platform enabling instant neighborhood interactions, geo-fenced community feeds, and low-latency messaging.
Education
Master of Computer Applications (MCA)
Bachelor of Computer Applications (BCA)
Intermediate (12th Grade)
High School (10th Grade)
Ready to build something impactful?
Whether you have an upcoming project, are looking for a Senior Mobile Engineer or GenAI specialist, or just want to connect, feel free to reach out.