✅ JavaScript (Node.js) – Express.js, NestJS bilan ishlash ✅ Python – Django, Flask bilan ishlash ✅ PHP – Laravel bilan ishlash ✅ Java – Spring Boot bilan ishlash ✅ C# – .NET bilan ishlash ✅ Go, Ruby, Rust – boshqa mashhur backend tillari 2. Ma’lumotlar Bazasi (Database) ✅ SQL-based (RDBMS) – PostgreSQL, MySQL, MS SQL ✅ NoSQL-based – MongoDB, Redis, Firebase ✅ ORM – Sequelize, TypeORM, Prisma, Hibernate 3. API yaratish va ishlash ✅ REST API – HTTP metodlari (GET, POST, PUT, DELETE) ✅ GraphQL – Alternativ API texnologiyasi ✅ WebSocket – Realtime dasturlar uchun 4. Autentifikatsiya va Xavfsizlik ✅ JWT (JSON Web Token) – user autentifikatsiyasi ✅ OAuth 2.0 / OpenID – Google, Facebook login ✅ Hashing & Encryption – bcrypt, Argon2, AES ✅ CORS, CSRF, XSS – xavfsizlik himoyalari 5. Server va Hosting ✅ Linux / Bash – server muhitida ishlash ✅ Nginx / Apache – veb-server konfiguratsiyasi ✅ Docker & Kubernetes – konteynerizatsiya va orkestratsiya ✅ CI/CD – GitHub Actions, GitLab CI/CD, Jenkins 6. Cloud Texnologiyalar ✅ AWS (S3, EC2, Lambda, RDS) ✅ Google Cloud / Firebase ✅ Microsoft Azure 7. Cache va Performance Optimization ✅ Redis, Memcached – caching texnologiyalari ✅ Load Balancing – trafigi katta loyihalar uchun ✅ Asinxron ishlash – RabbitMQ, Kafka 8. Testlash va Debugging ✅ Unit Testing – Jest, Mocha, PyTest ✅ Integration Testing – Postman, Newman ✅ Logging – Winston, Log4j 9. Soft Skills va Ishlash Metodologiyalari ✅ Agile / Scrum – jamoaviy ishlash ✅ Problemani yechish – algoritm va ma’lumotlar tuzilmalari ✅ Clean Code – DRY, SOLID, KISS qoidalari