@@ 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: { "๐": "Built India's FIRST wallet-based metro card with Google", "๐ซ": "Deployed QR ticketing for 4 major metros (CDAC compliant)", "๐ข": "Architected complete AFC system for Maharashtra ferries", "โ๏ธ": "Launched udChalo app - 100K downloads in 6 months", "๐": "Led fitness vertical processing millions of steps daily", "๐": "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" };
- ๐ Metro Networks: Architecting digital infrastructure for Mumbai, Hyderabad, Pune, Nagpur metros
- ๐ข Maritime Board: Complete ticketing solution for Maharashtra ferry network
โ๏ธ Armed Forces: Built mobile platform serving 100K+ defense personnel- ๐ Enterprise: Scaled Tim Hortons & Belgian Waffle for national flash sales
- ๐ 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
- ๐ Pan-India Metro Infrastructure: Deployed CDAC-compliant QR ticketing across Mumbai, Hyderabad, Pune, Nagpur metros - Millions of daily rides with 99.99% uptime
- ๐ข Maharashtra Ferry System: Built complete AFC system with WhatsApp ticketing & operator apps - Entire state network digitized
- โก Enterprise Flash Sales: Migrated monolith to microservices for Belgian Waffle & Tim Hortons - 150 TPS on National Waffle Day
โ๏ธ Defense Personnel App: Led complete mobile app development for armed forces flight booking - 100K+ downloads, 4.5โ rating in 6 months
- ๐ Fitness Ecosystem: Built native modules & integrated 15+ wearable devices - 10M+ daily events, 98% accuracy
- ๐ 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
Microservices Event Driven Serverless gRPC GraphQL
React Native Swift Kotlin TypeScript React
Node.js Kubernetes Docker AWS GCP
Kafka Redis PostgreSQL MongoDB RabbitMQ
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
- ๐ข Billeasy (Current) - Head of Engineering - Building nation-scale transit infrastructure
- ๐ข udChalo (1 Year 6 months) - Tech Lead - Launched defense personnel app (100K+ users)
- ๐ข 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
- ๐ต Google Wallet Partner - Certified for closed-loop Tap & Pay NFC implementation
- ๐ข WhatsApp Business API - Official Meta partner for transit ticketing integration
- ๐ฎ๐ณ CDAC Compliance - Government of India QR ticketing infrastructure certification
- โ๏ธ AWS Solutions Architect - Cloud architecture and scalability certification
- ๐ PCI DSS Compliance - Payment card industry data security standards
Current Initiatives:
- ๐ Pan-India Metro Digital Expansion
- ๐ซ Next-Gen NFC Payment Systems
- ๐ Real-time Transit Analytics Platform
Research Areas:
- ๐ค AI-powered fraud detection systems
- ๐ Blockchain for secure ticketing
- ๐ก IoT sensor networks for crowd management
React Native โโโโโโโโโโโโโโโโโโ 48.2%
TypeScript โโโโโโโโโโโโโโโโโโ 25.7%
JavaScript โโโโโโโโโโโโโโโโโโ 16.3%
Swift โโโโโโโโโโโโโโโโโโ 8.2%
Other โโโโโโโโโโโโโโโโโโ 1.6%
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"
Enterprise Architecture | Government Projects | Technical Leadership | Scale Challenges
From fitness apps to national transit systems - I architect solutions that scale