@@ Engineering Leader | Government Tech Specialist | Scale Architect @@
+ Built India's FIRST Wallet-Based Metro Card (Google Wallet Certified)
+ Architected Systems Processing 10M+ Daily Transactions
+ Led Pan-India Metro Digital Infrastructure (Mumbai, Hyderabad, Pune, Nagpur)
+ 150 TPS Flash Sale Architecture | 99.99% SLA Uptime
! "From Fitness Apps to National Transit Systems - I Build at Scale"

const nilava = {
    currentRole: "Head of Engineering @ Billeasy",
    previousRoles: ["Tech Lead @ udChalo", "Software Engineer @ StepSetGo"],
    experience: "5+ years building mission-critical systems",
    
    expertise: {
        scale: ["10M+ daily transactions", "150 TPS systems", "99.99% SLA"],
        mobile: ["React Native", "iOS/Android Native", "100K+ downloads"],
        backend: ["Microservices", "Kubernetes", "Node.js", "gRPC"],
        infrastructure: ["AWS/GCP", "Docker", "Kafka", "Redis", "PostgreSQL"],
        security: ["SSL Pinning", "PCI Compliance", "Cryptographic Systems"],
        payments: ["Google Wallet NFC", "UPI", "Payment Gateways"]
    },
    
    achievements: {
        "🚇": "Built India's FIRST wallet-based metro card with Google",
        "🎫": "Deployed QR ticketing for 4 major metros (CDAC compliant)",
        "🚢": "Architected complete AFC system for Maharashtra ferries",
        "✈️": "Launched udChalo app - 100K downloads in 6 months",
        "🏃": "Led fitness vertical processing millions of steps daily",
        "🔒": "Zero security breaches across all platforms"
    },
    
    partnerships: ["Google Wallet Certified", "Meta WhatsApp Business", "Government of India"],
    
    philosophy: "Build systems that scale to millions, not thousands"
};

• 🚇 Metro Networks: Architecting digital infrastructure for Mumbai, Hyderabad, Pune, Nagpur metros
• 🚢 Maritime Board: Complete ticketing solution for Maharashtra ferry network
• ✈️ Armed Forces: Built mobile platform serving 100K+ defense personnel
• 🍔 Enterprise: Scaled Tim Hortons & Belgian Waffle for national flash sales

• 🏆 India's First NFC Metro Card: Pioneered wallet-based metro card with Google Wallet integration using NXP MIFARE standards - Set National Benchmark for digital fare collection
• 🚇 Pan-India Metro Infrastructure: Deployed CDAC-compliant QR ticketing across Mumbai, Hyderabad, Pune, Nagpur metros - Millions of daily rides with 99.99% uptime
• 🚢 Maharashtra Ferry System: Built complete AFC system with WhatsApp ticketing & operator apps - Entire state network digitized
• ⚡ Enterprise Flash Sales: Migrated monolith to microservices for Belgian Waffle & Tim Hortons - 150 TPS on National Waffle Day

• ✈️ Defense Personnel App: Led complete mobile app development for armed forces flight booking - 100K+ downloads, 4.5★ rating in 6 months

• 🏃 Fitness Ecosystem: Built native modules & integrated 15+ wearable devices - 10M+ daily events, 98% accuracy
• 🔒 Security Infrastructure: Implemented SSL pinning, PCI compliance, fraud detection - Zero breaches, 90% fraud reduction

• Team Size: Led cross-functional teams of 15+ engineers
• User Scale: Systems serving millions of daily active users
• Transaction Volume: 10M+ daily transactions across platforms
• Availability: Maintained 99.99% SLA for critical infrastructure
• Partnerships: Google Wallet, Meta WhatsApp, Government of India
• Cost Optimization: Reduced infrastructure costs by 40% through optimization

graph LR
    A[2020: Application Developer<br/>StepSetGo] --> B[2021: Software Engineer<br/>StepSetGo]
    B --> C[2024: Technical Team Lead<br/>udChalo]
    C --> D[2025: Head of Engineering<br/>Billeasy]
    
    style A fill:#f9f,stroke:#333,stroke-width:2px
    style B fill:#bbf,stroke:#333,stroke-width:2px
    style C fill:#9cf,stroke:#333,stroke-width:2px
    style D fill:#9f9,stroke:#333,stroke-width:2px

• 🏢 Billeasy (Current) - Head of Engineering - Building nation-scale transit infrastructure
• 🏢 udChalo (1 Year 6 months) - Tech Lead - Launched defense personnel app (100K+ users)
• 🏢 StepSetGo (3+ years) - Software Engineer - Scaled fitness platform to millions

• Expertise: Kubernetes, Microservices, Event-Driven, gRPC
• Real-World: Built systems handling 10M+ daily transactions

• Expertise: React Native, Swift, Kotlin, Native Modules
• Real-World: 100K+ app downloads, 4.5+ star ratings

• Expertise: AWS, GCP, Docker, Istio, ArgoCD, Helm
• Real-World: 99.99% uptime on critical infrastructure

• Expertise: SSL Pinning, PCI DSS, CDAC, Cryptography
• Real-World: Zero security breaches across all platforms

• Expertise: Google Wallet NFC, UPI, Payment Gateways
• Real-World: India's first wallet-based metro card

• Expertise: Kafka, Redis, PostgreSQL, Sharding
• Real-World: 150 TPS flash sale architecture

• Expertise: Team Management, Stakeholder Management, Mentoring
• Real-World: Led teams of 15+ engineers on government projects

• 🔵 Google Wallet Partner - Certified for closed-loop Tap & Pay NFC implementation
• 🟢 WhatsApp Business API - Official Meta partner for transit ticketing integration
• 🇮🇳 CDAC Compliance - Government of India QR ticketing infrastructure certification
• ☁️ AWS Solutions Architect - Cloud architecture and scalability certification
• 🔒 PCI DSS Compliance - Payment card industry data security standards

Current Initiatives:

• 🚇 Pan-India Metro Digital Expansion
• 🎫 Next-Gen NFC Payment Systems
• 📊 Real-time Transit Analytics Platform

Research Areas:

• 🤖 AI-powered fraud detection systems
• 🔗 Blockchain for secure ticketing
• 📡 IoT sensor networks for crowd management

React Native     ████████████░░░░░░   48.2%
TypeScript       ██████░░░░░░░░░░░░   25.7%
JavaScript       ████░░░░░░░░░░░░░░   16.3%
Swift            ██░░░░░░░░░░░░░░░░    8.2%
Other            ░░░░░░░░░░░░░░░░░░    1.6%

Government & Public Sector

Enterprise Partners

technical_depth:
  - "I've built systems handling 10M+ daily transactions"
  - "Architected solutions from startup (100 users) to nation-scale (millions)"
  - "Deep expertise in both mobile native and backend infrastructure"
  
leadership:
  - "Led teams through critical government project deliveries"
  - "Mentored engineers from junior to senior levels"
  - "Bridge between technical complexity and business objectives"
  
innovation:
  - "First in India to implement wallet-based metro cards"
  - "Pioneered integration patterns now used as national standards"
  - "Active contributor to open-source and tech communities"

business_impact:
  - "Reduced operational costs by 40% through architecture optimization"
  - "Achieved 99.99% uptime for mission-critical systems"
  - "Delivered projects serving millions with zero security breaches"
  
partnerships:
  - "Secured Google Wallet certification for national infrastructure"
  - "Established Meta WhatsApp Business integration for government"
  - "Built trusted relationships with government stakeholders"
  
delivery:
  - "Consistent on-time delivery of complex projects"
  - "Experience with compliance (CDAC, PCI DSS)"
  - "Proven track record in high-pressure environments"