[ SYS-001 ]MISSION CONTROL
RITIK KUMAR
AI EngineerData EngineerFull Stack Engineer
Building scalable systems across AI, data, and modern web technologies.
SECTOR ALPHA
SECTOR BETA
SECTOR GAMMA
SECTOR DELTA
Building scalable systems across AI, data, and modern web technologies.
MISSION CONTROL -- ENGINEERING COMMAND CENTER
Mission history, engineering trajectory, and the knowledge systems that built this engineer.
Programming Foundations
Initiated first contact with software engineering. Built the foundation with algorithms, data structures, and the fundamental tools of the craft.
CloudPlay Solutions
First deployment into industry. Contributed to production cloud infrastructure and shipped real-world systems under demanding engineering constraints.
Suminite Holdings
Expanded scope into full-stack engineering. Designed and shipped scalable features, architecting systems that served thousands of concurrent users.
EPAM Systems
Operating at global engineering scale. Building AI-augmented systems and high-throughput data pipelines for enterprise-grade solutions across international teams.
Future Mission
The next evolution. Leading AI systems architecture, engineering teams, and building the intelligence infrastructure of tomorrow.
Production systems built for scale -- from AI-powered document intelligence to event-driven social infrastructure.
Multi-modal RAG intelligence platform with semantic vector search
Sub-150ms average query latency across 50K+ document corpus via ANN indexing
Multi-modal ingestion pipeline supporting PDF, DOCX, images, and live web URLs
Hybrid retrieval (dense vectors + BM25 sparse) improving recall by 34% over vector-only
Reduced LLM hallucination rate to <3% through structured context injection and re-ranking
Unified ingestion pipeline for PDFs, DOCX, images (OCR), and live URLs with async chunking and deduplication.
Cosine similarity search over 3072-dimensional embeddings with Pinecone serverless ANN index at millisecond latency.
Real-time token streaming via SSE with automatic citation generation, source attribution, and confidence scoring.
Combined dense vector + BM25 sparse retrieval with Reciprocal Rank Fusion for maximal recall and precision.
Namespace-based data isolation with RBAC per corpus, API key scoping, and per-tenant usage metering.
Full trace logging with latency breakdown per stage, retrieval quality scores, token counts, and cost tracking.
Event-driven social platform engineered for horizontal scale
Event-driven social feed with Kafka fan-out achieving <40ms end-to-end delivery latency
Graph-based social network using PostgreSQL recursive CTEs for friend-of-friend queries
Real-time notification engine delivering 100+ notifications/second at peak load via WebSockets
99.9% uptime SLA with zero-downtime Kubernetes rolling deployments and automated rollback
Feed generation optimized from 800ms → 38ms via Redis sorted-set fan-out-on-write architecture
Fan-out-on-write with Redis sorted sets for sub-50ms personalized feed. Hybrid fan-out for celebrity accounts.
PostgreSQL recursive CTE friend graph with Elasticsearch for social discovery, mutual connections, and recommendations.
Kafka-driven pipeline with WebSocket delivery, offline queue (Redis), and mobile push via FCM/APNs.
Hybrid collaborative filtering + content-based recommendation engine with real-time signal ingestion via Kafka.
Async S3-backed transcoding pipeline with adaptive bitrate streaming and CloudFront CDN global delivery.
JWT + refresh token rotation, OAuth 2.0 social login, per-endpoint rate limiting, and abuse detection.
Active scan of engineering systems across all operational layers. Hover or select a node to inspect.
AWAITING SIGNAL
Hover or select a node
Classified engineering knowledge repository. Each credential is a verified entry in the mission knowledge base.
Real-time dashboard of competitive programming stats, project delivery metrics, and career progression data.
competitive-programming.io
competitive-programming.io
production · beta · open-source
career · impact · growth