@Service
public class SatyamSingh implements BackendEngineer {
private final String name = "Satyam Singh";
private final String role = "Software Engineer @ Priority IDC (Fintech)";
private final int experience = 5.4; // years
private final String location = "India 🇮🇳";
@Override
public List<String> currentlyBuilding() {
return List.of(
"Target Balance Account (TBA) system — 5K TPS at peak",
"Event-driven pipelines processing 1M+ events/day",
"Fault-tolerant distributed financial systems"
);
}
@Override
public List<String> passions() {
return List.of(
"Distributed Systems & Microservices",
"High-Throughput Event-Driven Architectures",
"Financial Systems with Strong Consistency"
);
}
}| Metric | Achievement |
|---|---|
| 🚀 Transactions / sec | Designed systems handling 2K–5K TPS at peak |
| 📊 Events / day | Kafka + Debezium pipelines processing 1M+ events/day |
| ⚡ API Latency | Reduced by 30–40% via Redis & query optimization |
| 💰 Infrastructure Cost | Cut by ~20% with GPU utilization monitoring |
| 🏦 Daily Transactions | Ledger service handling 1M+ transactions/day (ACID) |
| 👥 DAU Served | Recommendation engine for 100K+ daily active users |
| ✅ Transaction Failure Rate | Maintained < 0.01% failure rate |
Core Languages & Frameworks
Databases & Messaging
Cloud & DevOps
System Design Expertise
🏦 Software Engineer — Priority IDC (Fintech) | Jan 2025 – Present
Building core banking infrastructure for high-volume financial operations.
- 🔥 Designed Target Balance Account (TBA) system handling ~2K–5K transactions/sec during peak loads
- 🔄 Built event-driven architecture using Kafka & Debezium processing ~1M+ events/day for real-time data sync
- ⚡ Reduced API response time by ~30–40% using Redis caching and optimized DB queries
- 📈 Improved system throughput by ~25% through multithreading & concurrency optimizations
- ✅ Ensured strong consistency with < 0.01% failure rate in transaction processing
- 🧑🏫 Mentored junior developers and led code reviews to elevate code quality
📱 Software Engineer — 17Live Inc. (Social Media) | Feb 2022 – Jan 2025
Scaled real-time recommendation and infrastructure systems for a live-streaming platform.
- 🎯 Built recommendation backend serving ~100K+ daily active users with real-time personalization
- 📊 Processed ~500K–1M events/day using Kafka for user activity tracking
- ⚡ Reduced recommendation latency by ~35% through optimized data pipelines
- ⚖️ Designed load balancer microservice handling ~10K+ requests/min across distributed services
- 💰 Reduced infrastructure cost by ~20% via efficient GPU utilization monitoring
- 📐 Enabled auto-scaling on custom metrics, improving resource utilization by ~30%
💳 SDE — Paytm (Fintech) | Jan 2021 – Feb 2022
Core payments infrastructure at India's largest digital payments platform.
- 🏛️ Developed ledger service handling ~1M+ transactions/day with full ACID compliance
- ⚡ Reduced query latency by ~40% using smart indexing and Redis caching
- 📄 Implemented cursor-based pagination, improving performance by ~50% for large datasets
A production-grade P2P Digital Wallet built with microservices & distributed transaction patterns
┌─────────────────────────────────────────────────────┐
│ API Gateway │
│ OAuth2 · JWT · Rate Limiting │
└───────────────┬─────────────────┬───────────────────┘
│ │
┌────────▼───────┐ ┌───────▼────────┐
│ Wallet Service │ │ Payment Service│
│ Double-Entry │ │ Saga Coord. │
└────────┬───────┘ └───────┬────────┘
│ │
┌────────▼─────────────────▼────────┐
│ Transaction Service │
│ Fraud Detection · Rule Engine │
└───────────────────────────────────┘
│
┌──────────▼──────────┐
│ Notification Svc │
│ Email · SMS │
└─────────────────────┘
Key Highlights:
- 🔐 Secure auth via OAuth2, JWT, API Gateway
- 🔄 Saga-based distributed transactions for cross-service consistency
- 📒 Double-entry ledger for strong financial accuracy
- 🚨 Real-time fraud detection with rule-based validation
- 🔁 Fault tolerance via Eureka service discovery + Circuit Breaker
- 📬 Multi-channel notifications (Email/SMS) for transaction updates
If you're working on high-scale fintech, distributed systems, or want to discuss system design, I'd love to connect!
