Shiv Shankar Tiwari
Senior Engineering Manager & Technical Architect
I transform startup ideas into enterprise-grade products serving millions of users. My passion ignited when I built my first mobile app at 19, and I've been scaling engineering teams and products ever since.
Professional Summary
I caught fire coding when I was 19, and I've been building mobile and web applications that serve millions of users ever since. My journey started with a simple Android app that I built to solve a problem I had, and it grew into a passion for creating products that make a real difference.
Today, I lead engineering teams at fast-growing startups, specializing in React Native, Flutter, and Node.js. I've architected systems that process $100M+ in transactions, reduced deployment times by 90%, and built teams that consistently deliver high-quality products.
When I'm not coding, you'll find me mentoring developers, contributing to open-source projects, or exploring the latest in mobile development. I believe great engineering is about solving real problems with elegant solutions, and I'm always excited to connect with others who share that passion.
Strategic Impact & Achievements
Scale & Performance Excellence
- •Drove 200% revenue growth at world's largest Bitcoin ATM network (8,000+ ATMs across US/Canada, 15,000+ total locations)
- •Optimized 4.4/5 rated mobile app reducing memory usage by 35% and battery consumption by 40%
- •Architected enterprise systems serving 5M+ active users with 99.9% uptime
- •Implemented advanced monitoring reducing crash rates by 45% across mobile applications
Leadership & Team Excellence
- •Led high-performing teams of 8+ senior engineers across multiple time zones
- •Mentored 25+ developers advancing their careers in mobile development
- •Established engineering standards saving 40% development time
- •Sprint-focused development approach delivering projects with speed and precision, reflecting competitive athletic background
- •Implemented DevOps transformation across multiple product lines
Executive Leadership Experience
Deputy Manager – Mobile Engineering
Enterprise FinTech Solutions
Leading enterprise FinTech mobile application development with focus on security, scalability, and regulatory compliance for multi-million dollar portfolio.
- •Architected next-generation CI/CD pipelines reducing deployment time by 90% and enabling zero-downtime releases
- •Implemented enterprise-grade security protocols and Clean Architecture patterns ensuring SOC2 compliance
- •Optimized application performance reducing bundle size by 30% and improving user experience metrics
- •Established engineering best practices and mentored team of 6+ senior mobile engineers
Senior Mobile App Engineer
World's Largest Bitcoin ATM Network
Led full-stack development for world's largest Bitcoin ATM network (8,400+ ATMs across North America), driving 200% revenue growth through innovative mobile and backend solutions.
- •Architected BDCheckout™ integration enabling cash-to-crypto transactions at 8,400+ retail locations, processing $100M+ in transactions
- •Implemented Simplex payment gateway for credit/debit card crypto purchases, expanding user accessibility across North America
- •Optimized Google Maps & ATM locator reducing memory usage by 35% and battery consumption by 40% for 4.4/5 rated app
- •Built NestJS backend services with Web3 integration supporting 120+ cryptocurrency wallets and real-time transaction processing
- •Enhanced mobile app security implementing ultra-secure PIN-based wallet system and reducing crash rates by 45%
Full Stack Engineer
Enterprise Identity Solutions
Developed enterprise-grade decentralized identity solutions and secure digital wallet applications leveraging Blockchain and Web3 technologies for global enterprise clients and consumer markets.
- •Architected Affinidi Vault mobile application - Secure digital wallet with end-to-end encryption, passwordless sign-ins, and consent-based credential sharing
- •Implemented dual storage architecture supporting both decentralized local storage and cloud storage with selective credential sharing capabilities
- •Built verifiable credentials system enabling direct credential claiming from issuers and organized file management with profile-based access control
- •Designed high-performance GraphQL APIs reducing response times by 50% and supporting 10K+ concurrent requests for credential verification
- •Implemented vault backup & restore functionality with secure cloud synchronization and comprehensive consent history tracking
Senior Software Engineer (Contract)
Full-Stack Development Solutions
Delivered comprehensive full-stack solutions for Fortune 500 companies including ICICI Bank, SBI, and various government projects. Architected scalable backend systems, RESTful APIs, and cross-platform mobile applications for both iOS and Android platforms achieving significant market impact.
- •FingerTip Educational Platform: Full-stack development with Node.js backend, REST APIs, and React Native mobile app driving 30% engagement increase and 50K+ student adoption
- •Multipie Trading Platform: Architected backend systems with real-time data processing, trading APIs, and Flutter mobile app achieving 400% user growth and $10M+ trading volume
- •Zibtek Software Solutions: Delivered custom software development solutions for Fortune 500 companies including ICICI Bank, SBI, and government projects. Built full-stack applications using React.js, Node.js, Python, Django, and mobile development frameworks including React Native, Flutter, and iOS/Android native development
- •Led technical strategy and architecture decisions for cross-platform mobile development initiatives
Technical Architecture & Expertise
Mobile & Frontend
Backend & APIs
DevOps & Cloud
Signature Projects & Innovations
Bitcoin Depot - World's Largest Bitcoin ATM Network
Led full-stack development for world's largest Bitcoin ATM network with 8,000+ ATMs across US/Canada, 7,700+ BDCheckout™ retail locations, and 15,000+ total locations. Built cross-platform mobile applications for both iOS and Android, implemented BDCheckout™ checkout counter funding and Simplex online purchasing, driving 200% revenue growth
Affinidi Vault - Secure Digital Wallet
Developed enterprise-grade decentralized identity wallet with end-to-end encryption, passwordless sign-ins, consent-based credential sharing, and dual storage architecture supporting multiple profiles. Built cross-platform mobile applications for both iOS and Android platforms
Multipie - Investment Insights Platform
Built comprehensive Flutter-based investment platform with advanced features for stock market analysis and community-driven insights. Developed with focus on performance, user experience, and real-time data processing.
Key Features Developed:
- Interact: Share insights with Stock Market Community
- Ideate: Track Portfolio with 360-degree stock analysis
- Invest: Check prominent investors' portfolios for better decisions
- Calculator: Advanced investment calculation tools
Open Source Contributions
Active contributor to React Native ecosystem including Hermes engine optimizations and performance improvements
Academic Excellence & Professional Certifications
Bachelor of Technology in Computer Science and Engineering
Rajkiya Engineering College Sonbhadra • 2015 - 2019
Specialization in Software Engineering, Algorithms, and System Design
Athletic Achievements
Sprint Runner & Sports Champion • Represented college in multiple athletic competitions • Demonstrated speed, agility, and competitive excellence in track and field events