Vicky Kumar
Full Stack Engineer — React/Next.js, Rust & Agentic AI
Skills
Core stack: React.js, Next.js, TypeScript, HTML, CSS, Tailwind CSS, shadcn/ui, SEO, Rust, Axum, Tokio, LangGraph, LangChain, RAG, pgvector, Python, FastAPI, Node.js, LLM tool calling, multi-agent workflows, human-in-the-loop, Redis queues, PostgreSQL, REST APIs, WebSockets, Docker, Kubernetes, AWS (EKS), Terraform, CI/CD, OpenTelemetry, microservices, event-driven architecture
Knowledge-Based
- Agentic AI (LangGraph, RAG): Built invoice agents with pgvector retrieval and human-in-the-loop gates — ~70% less manual entry at CodeApto.
- Production APIs (Node.js, FastAPI): Shipped 40+ REST endpoints with pagination and idempotent writes for WMS and client integrations.
- PostgreSQL & multi-tenancy: Applied RLS and RBAC on a ledger serving 10K+ daily transactions across 5+ facilities.
- Async systems (Redis queues): Ran 5K+ daily background jobs for AI document processing without blocking API traffic.
- Cloud delivery (AWS, Terraform): Operated EKS/RDS/S3 stacks; cut deploy time from 45 minutes to 8 minutes via CI/CD automation.
Personal Traits
- End-to-end ownership: As founding engineer, took WMS backend, agent workflows, and releases from design through production support.
- Complex problem-solving: Diagnosed race conditions in inventory locking and led the Rust migration that stabilized concurrent updates.
- Judgment under uncertainty: Designed AI automations with explicit human review paths so ops teams could trust production rollouts.
Transferable
- Analytical troubleshooting: Added OpenTelemetry and structured logging — production diagnosis dropped from hours to minutes.
- Cross-functional delivery: On 8+ freelance products, aligned API contracts and admin tools so React teams shipped on tight cycles.
- Prioritization & execution: Sequenced AI pipelines, API hardening, and infra work to keep 1K+ DAU client apps stable during growth.
Experience
CodeApto India
Aug 2023 – Present
Full Stack Engineer / Founding Engineer
Bengaluru, India
- Owned a multi-tenant WMS backend for 5+ facilities handling 10K+ daily inventory transactions with consistent ledger data.
- Shipped LangGraph invoice agents with human-in-the-loop review, Redis job queues, and FastAPI services — cut manual data entry ~70%.
- Built async pipelines (5K+ daily background tasks) for AI document processing and reports without blocking API traffic.
- Designed 40+ REST endpoints with cursor pagination, idempotent writes, and RFC 7807 error responses for client integrations.
- Enforced tenant isolation with PostgreSQL RLS and scoped RBAC across all read/write paths.
- Migrated hot inventory paths to Rust (Axum), removing race conditions and cutting P99 latency from 800ms to 120ms.
- Added OpenTelemetry tracing and structured logs; reduced mean time to diagnose production issues from hours to minutes.
- Automated AWS EKS/RDS/S3 deploys with Terraform and CI/CD (45 min → 8 min per release).
Independent Consultant
Jan 2020 – Aug 2023
Freelance Full Stack Developer
Remote
- Delivered 8+ startup products end to end with Node.js, Express, React, and MongoDB.
- Built auth, REST APIs, and admin tools supporting 1K+ daily active users across client deployments.
- Designed schemas and API contracts that kept frontend teams shipping on tight release cycles.
Projects
AI-Powered Approval Engine
LangGraph · FastAPI · Redis queues · pgvector · OpenTelemetry
Agentic invoice extraction and policy validation with RAG retrieval, tool orchestration, and human review gates for safe automation.
Enterprise WMS (Multi-Tenant)
Node.js · Rust (Axum) · PostgreSQL · Redis · AWS EKS · Terraform
Full stack warehouse platform with RBAC, event-driven inventory, WebSocket floor updates, and AI-assisted data entry workflows.
Sticky AI (Desktop Assistant)
Rust · Tauri · Ollama · ChromaDB · local RAG
Privacy-first local agent assistant with on-device LLM inference and vector memory (Rust/Tauri vs Electron for faster startup).
Education & Recognition
BRABU University — B.A., Psychology & Economics
Google Cloud Agentic AI Hackathon Finalist (2025)
AI Agents Hackathon — Lyzr AI / Airtribe (2025)