Frontend: React, React.js, ReactJS, Vue, Vue.js, VueJS, Angular, AngularJS, Svelte, SvelteKit, Next.js, NextJS, Nuxt.js, Gatsby, Remix, HTML, HTML5, CSS, CSS3, SCSS, SASS, Less, Tailwind, TailwindCSS, Bootstrap, Material UI, MUI, Chakra UI, Styled Components, Emotion, Redux, MobX, Zustand, Recoil, Context API, React Query, TanStack Query, SWR, Webpack, Vite, Rollup, Parcel, Babel, ESLint, Prettier, Storybook, Figma, Sketch, Adobe XD

Backend: Node.js, NodeJS, Express, Express.js, NestJS, Fastify, Koa, Hapi, Django, Flask, FastAPI, Spring, Spring Boot, Spring Framework, Spring MVC, Spring Security, Spring Cloud, Ruby on Rails, Rails, Phoenix, Laravel, Symfony, ASP.NET, .NET, .NET Core, Gin, Echo, Fiber, Chi, gRPC, REST, RESTful, GraphQL, Apollo, Prisma, Sequelize, TypeORM, Hibernate, JPA, MyBatis, SQLAlchemy, ActiveRecord, Mongoose

Databases: PostgreSQL, Postgres, MySQL, MariaDB, SQL Server, MSSQL, Oracle, SQLite, MongoDB, DynamoDB, Cassandra, Redis, Memcached, Elasticsearch, OpenSearch, Neo4j, CockroachDB, TimescaleDB, InfluxDB, Firebase, Firestore, Supabase, PlanetScale, Snowflake, BigQuery, Redshift, Databricks

Cloud & Infrastructure: AWS, Amazon Web Services, EC2, S3, Lambda, API Gateway, CloudFront, Route 53, RDS, Aurora, ECS, EKS, Fargate, SQS, SNS, EventBridge, Step Functions, CloudWatch, IAM, VPC, Cognito, Amplify, CDK, CloudFormation, GCP, Google Cloud Platform, Google Cloud, Compute Engine, Cloud Functions, Cloud Run, Cloud Storage, BigQuery, Pub/Sub, GKE, Azure, Microsoft Azure, Azure Functions, Azure DevOps, Kubernetes, K8s, Docker, Containers, Helm, Istio, Terraform, Pulumi, Ansible, Chef, Puppet, Jenkins, CircleCI, GitHub Actions, GitLab CI, Travis CI, ArgoCD, Flux, Spinnaker, Datadog, New Relic, Splunk, Grafana, Prometheus, PagerDuty, OpsGenie

AI & Machine Learning: OpenAI, GPT, GPT-4, ChatGPT, Claude, Anthropic, LLM, Large Language Models, AI, Artificial Intelligence, Machine Learning, ML, Deep Learning, Neural Networks, NLP, Natural Language Processing, Computer Vision, TensorFlow, PyTorch, Keras, scikit-learn, Hugging Face, LangChain, Vector Databases, Pinecone, Weaviate, Chroma, RAG, Retrieval Augmented Generation, Embeddings, Fine-tuning, Prompt Engineering

DevOps & Tools: Git, GitHub, GitLab, Bitbucket, Jira, Confluence, Notion, Slack, Linear, Asana, Trello, Agile, Scrum, Kanban, CI/CD, Continuous Integration, Continuous Deployment, DevOps, SRE, Site Reliability Engineering, Infrastructure as Code, IaC, Microservices, Monolith, Event-Driven Architecture, Domain-Driven Design, DDD, CQRS, Event Sourcing, TDD, Test-Driven Development, BDD, Unit Testing, Integration Testing, E2E Testing, Jest, Mocha, Chai, Pytest, JUnit, Cypress, Playwright, Selenium, Postman, Insomnia, Swagger, OpenAPI

Mobile: React Native, iOS, Android, Swift, Kotlin, Flutter, Dart, Xamarin, Expo, Mobile Development, Cross-Platform, Native Apps, Progressive Web Apps, PWA, Responsive Design, Mobile-First

Architecture & Patterns: System Design, Distributed Systems, High Availability, Scalability, Performance Optimization, Caching, Load Balancing, API Design, Webhooks, OAuth, JWT, Authentication, Authorization, Security, OWASP, Encryption, SSL, TLS, HTTPS, WebSockets, Server-Sent Events, Real-time, Pub/Sub, Message Queues, RabbitMQ, Kafka, Apache Kafka, Kinesis, NATS, ZeroMQ, Celery, Sidekiq, Bull, BullMQ

Data & Analytics: ETL, Data Pipelines, Data Engineering, Data Warehousing, Business Intelligence, BI, Analytics, Reporting, Dashboards, Metrics, KPIs, A/B Testing, Feature Flags, LaunchDarkly, Segment, Mixpanel, Amplitude, Google Analytics

Soft Skills: Leadership, Team Lead, Tech Lead, Engineering Manager, Mentoring, Code Review, Technical Writing, Documentation, Communication, Problem Solving, Critical Thinking, Collaboration, Remote Work, Cross-functional Teams, Stakeholder Management, Project Management