Sunny Rishy Vardhan.
C++ systems engineer building low-latency backends.

Low-latency multi-threaded matching engine processing 1.4M ticks/sec at 400ns per op using lock-free queues, atomics, and a price-time priority order book.

• Profiled hot-path with Linux perf; eliminated heap allocations and applied move semantics + cache-friendly layouts.
• Tick-data replay with 3 strategies (SMA crossover, mean reversion, market making) — 25,000+ simulated trades.

Production-grade multi-threaded REST API server with sub-50ms response times via connection pooling and async I/O on Linux.

• Thread-safe request handling; race conditions diagnosed with GDB, strace, and structured logging.
• Docker multi-stage builds + Docker Compose for reproducible CI/CD across environments.

Hash-based inverted index with TF-IDF ranking — indexes 1,005 docs (136K tokens) in under one second.

• O(1) average lookup via hash-based inverted index; O(D log D) ranked retrieval with STL containers.
• Stop-word filtering and tuned containers maintain sub-millisecond response at scale.