01 / 0811 skills
Core Backend
- Node.js
- NestJS
- Express.js
- TypeScript
- GraphQL
- REST APIs
- gRPC
- Python
- Microservices
- WebSockets
- WebRTC
Skills
Technical Arsenal
Backend · AI/LLM · Automation · Cloud · Mobile
02 / 0810 skills
Data & Messaging
- MongoDB
- PostgreSQL
- MySQL
- Redis
- Prisma
- Mongoose
- Apache Kafka
- RabbitMQ
- Elasticsearch
- BullMQ
03 / 0810 skills
AI, LLMs & RAG
- OpenAI
- Anthropic Claude
- Google Gemini
- LangChain
- RAG Pipelines
- Pinecone / pgvector
- Whisper STT
- ElevenLabs TTS
- Ollama
- LM Studio
04 / 089 skills
Workflow & Business Automation
- n8n
- Zapier
- React Flow
- BullMQ
- Agenda.js
- Webhook Orchestration
- Drip Campaigns
- Event-Driven Triggers
- Multi-Channel Campaigns
05 / 0810 skills
Frontend & Mobile
- React.js
- Next.js
- React Native
- Expo
- React Flow
- Redux
- React Hooks
- Tailwind CSS
- Material-UI
- Ant Design
06 / 0810 skills
Cloud & DevOps
- AWS
- GCP
- Azure
- Docker
- Kubernetes
- Terraform
- Nginx
- Cloudflare
- GitHub Actions
- GitLab CI
07 / 087 skills
Observability & CI/CD
- Prometheus
- Grafana
- ELK Stack
- Jenkins
- Blue-Green Deploys
- Canary Releases
- APM & Flame Graphs
08 / 089 skills
Payments, Auth & Security
- Stripe
- PayPal
- Paddle
- NMI
- Valor
- OAuth 2.0
- JWT
- Firebase Auth
- CASL / RBAC
Proficiency
Expertise Depth
Where my time and depth actually concentrate — grouped by how I use each, not arbitrary scores.
Core stackDaily driver — deep, ship-ready
Daily driver — deep, ship-ready
- Backend DevelopmentNode.jsNestJSExpress
- System ArchitectureDDDMicroservicesCQRS
- API Design & IntegrationRESTGraphQL40+ APIs
- AI / LLM IntegrationOpenAIClaudeRAG
Production-readyUsed regularly, scoped well
Used regularly, scoped well
- Cloud & DevOpsGCPAWSK8sDocker
- Workflow Automationn8nZapierBullMQ
- Frontend (React)ReactNext.jsRedux
Working knowledgeHands-on, integrate as needed
Hands-on, integrate as needed
- Mobile (React Native)React NativeExpo
Deep Dive
Engineering Expertise
The systems-level capabilities behind durable, scalable products.
System Architecture
- Microservices with domain boundaries & DDD
- Event-driven systems with Kafka & RabbitMQ
- CQRS, Saga and Outbox patterns
- API Gateway, BFF and service-mesh patterns
- Modular monolith → microservice migration
Reliability & Security
- JWT / OAuth2 / RBAC / API-key auth
- CASL-based attribute-level permissions
- Rate limiting, throttling & circuit breakers
- Graceful degradation & fault isolation
- Dependency auditing & SAST pipelines
Real-Time & Event Systems
- WebSocket architecture with Socket.io at scale
- WebRTC signaling & peer-to-peer streaming
- Event sourcing & message-queue design
- Pub/Sub with Redis for lightweight eventing
Performance Engineering
- Sub-50ms API response optimization
- MongoDB aggregation tuning & indexing
- Multi-layer caching (Redis + CDN + in-memory)
- Read replicas & query planning
- insertMany batching & parallel async patterns
Cloud & DevOps
- Docker + Kubernetes + Helm deployments
- GitOps with GitHub Actions / GitLab CI
- Blue-green & canary release strategies
- Observability: Prometheus, Grafana, ELK
- GCP: Cloud Run, Compute, Storage
AI & LLM Integration
- Prompt engineering: Claude, GPT-4, Gemini
- Local LLM inference: LM Studio + Ollama
- RAG pipelines with Pinecone / pgvector
- ElevenLabs TTS + Whisper STT in production
- Chatbot training, knowledge base & agent flows
Workflow & Marketing Automation
- n8n & Zapier multi-step automation design
- Webhook-driven orchestration with retries
- BullMQ / Agenda.js scheduled job pipelines
- Email drip, nurture & re-engagement flows
- Multi-channel campaigns (Meta + Google)
Third-Party API Orchestration
- OAuth 2.0 flows across 15+ platforms
- Webhook ingestion, verification & idempotency
- Rate-limit-aware clients with backoff
- Multi-platform data sync & conflict resolution