| 01Backend | Java (Spring Boot, Spring MVC, Hibernate) / Node.js (Express) / Python (Django, Flask, FastAPI) / .NET | APIs, business logic and integrations, with RESTful design and JUnit-tested services. |
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| 02Frontend | React / Angular / Next.js / TypeScript / jQuery | Fast, accessible interfaces for web and desktop. |
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| 03Mobile | React Native / Android / iOS | Apps live on Google Play and the App Store. |
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| 04AI and GenAI | RAG pipelines / FastAPI / TensorFlow / Ollama (self-hosted LLMs) / OCR / Audio analysis | Chatbots, document reading and custom models, including models run on your own servers. |
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| 05LLM and speech providers | Anthropic Claude / OpenAI GPT / Google Gemini / Alibaba Qwen / Sarvam AI / ElevenLabs | Multi-model orchestration, chosen per task, cost and data-privacy needs. |
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| 06Data and messaging | MySQL / MongoDB / SQL Server / Redis / Kafka / RabbitMQ / ZooKeeper | Databases, queues and streams that keep systems consistent. |
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| 07Cloud and DevOps | GCP / AWS / Vercel / Self-hosted VPS (Ubuntu) / GitHub Actions / Jenkins / GitLab CI | Deployment, scaling, backups and cost control. |
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| 08Integrations | Razorpay / Stripe / Shiprocket / MSG91 / SendGrid / Nodemailer / MJML / Webhooks | Payments, shipping, SMS and email wired into your software. |
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| 09Desktop | Electron / Offline-first | Windows apps that keep working without internet. |
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| 10Practice | Agile / Scrum / REST API design / Jira / ClickUp | Delivery you can follow, in milestones you can review. |
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