Rajendra Joshi
Full Stack Developer & Systems Engineer
Executive Summary
Results-driven Full Stack Developer and Systems Engineer with deep expertise in architecting high-performance web applications, distributed real-time systems, and cross-platform desktop software. Avid hardware & OS internals power user skilled in profiling kernel latency, memory allocations, and V8 runtime performance. Proven track record of designing scalable REST & WebSocket backends, private vector AI pipelines, and responsive modern user interfaces.
Technical Expertise
Languages & Core
Frontend & UI Engineering
Backend & Distributed Systems
Databases, Cloud & DevOps
Desktop, Tooling & Diagnostics
Work Experience
Lead Full Stack & Systems Architect
2024 - PresentIndependent Engineering & Solutions • Remote
- Architected distributed real-time web applications with persistent WebSocket duplex streams, achieving sub-20ms round-trip collaboration latency across edge clusters.
- Engineered on-device neural search workspaces utilizing pgvector, HNSW indexing, and localized vector embeddings to eliminate cloud privacy leakage.
- Developed high-efficiency Chrome Manifest V3 extensions and Electron desktop utilities communicating directly with native OS diagnostic processes via standard I/O pipes.
- Profiled bare-metal hardware and operating system bottlenecks using Event Tracing for Windows (ETW) to diagnose DPC/ISR storms, memory fragmentation, and thermal throttling.
Senior Software Engineer
2022 - 2024Full Stack Software Engineering • Remote / Hybrid
- Designed and maintained scalable multi-tenant web applications with TypeScript, Next.js, and Material-UI, serving responsive experiences across desktop and mobile devices.
- Built resilient micro-invoicing and payment workflows with idempotent webhook handlers, automated retry queues, and cryptographic payload validation.
- Implemented Redis Pub/Sub adapter pipelines to enable horizontal multi-node synchronization for live user state and canvas rendering.
- Optimized client-side bundle footprints by 42% through code-splitting, tree-shaking, and lazy component hydration.
Key Engineering Projects
NexusAI - Neural Workspace & Document Intelligence
Lead Architect & Developer
Enterprise-grade document intelligence and semantic search engine powered by local vector embeddings and private inference with zero cloud data leakage.
- Sub-50ms vector cosine similarity queries with pgvector and HNSW graph indexing.
- Full-text chunking pipeline processing multi-gigabyte technical schematics and PDF archives.
- Responsive streaming chat UI built with Next.js, TypeScript, and Tailwind CSS.
AuraStream - Decentralized Audio & Studio Broadcasting
Full Stack Engineer
Low-latency collaborative radio studio and audio streaming platform featuring real-time WebRTC audio pipelines and dynamic waveform telemetry.
- Sub-20ms distributed peer audio latency with WebSockets and Node.js.
- Lossless FLAC and spatial audio panning support with Canvas API waveform visualization.
FleetPulse - Industrial IoT Telemetry & Real-Time Diagnostics
Systems & Backend Engineer
Geospatial IoT tracking and hardware diagnostic engine handling sensor signals per second across transport vehicle fleets.
- Engine CAN-bus and battery thermal telemetry visualization using Chart.js.
- High-speed time-series SQLite and WebSocket pipeline optimized for edge connectivity.
PixelForge - Cloud Vector Design Studio & Infinite Canvas
Frontend Engineer
Lightweight browser-based vector studio featuring real-time multiplayer presence, CRDT conflict-free sync, and bezier path manipulation.
- Fluid 60fps rendering with complex canvas geometries and instant SVG/WebP exports.
KryptonPay - Global Invoicing & Crypto Payment Gateway
Backend & Security Engineer
Automated multi-currency payment settlement protocol generating dynamic cryptographic payment proofs and verifiable QR invoices.
- Strict idempotency keys, webhook retry queues, and bank-grade TLS payload validation.
Education
Bachelor of Technology in Computer Science & Engineering
CompletedTechnical University • India
- Focus on Operating Systems, Computer Architecture, Data Structures & Distributed Systems.
- Graduated with Honors in System Programming and Software Design.
Certifications & Focus
Advanced Full Stack Web Architecture & React/Next.js Systems
Operating System Internals & Low-Level Hardware Diagnostics
Cloud & Distributed Microservices Engineering