Knex.js Docker JavaScript ES6+ Express.js JavaScript NestJS Node.js (3+ years for Middle+ level) Sequelize Prisma Redis Node.js (5+ years for Senior level) TypeScript SQL PostgreSQL MySQL designing RESTful APIs implementing RESTful APIs WebSockets Git Git Flow Trunk-Based workflows writing unit tests writing integration tests importance of various types of tests TypeScript's capabilities TypeScript's type system MariaDB relational databases or equivalents TypeORM

NestJS Linux Git TypeORM Development experience Docker Node.js TypeScript

JavaScript (ES6+) PostgreSQL Node.js ecosystem Node.js Webpack Yandex Cloud AWS GCP Docker Kubernetes Gulp Node.js frameworks Node.js development Promises async/await Git RESTful API MongoDB MySQL asynchronous programming concepts TypeScript Azure WebSockets protocol web application security principles build tools HTTP protocol TypeScript Express.js

Knex.js Docker JavaScript ES6+ Express.js JavaScript NestJS Node.js (3+ years for Middle+ level) Sequelize Prisma Redis Node.js (5+ years for Senior level) TypeScript SQL PostgreSQL MySQL designing RESTful APIs implementing RESTful APIs WebSockets Git Git Flow Trunk-Based workflows writing unit tests writing integration tests importance of various types of tests TypeScript's capabilities TypeScript's type system MariaDB relational databases or equivalents TypeORM

identifying bottlenecks in SQL queries DBMS performance factors partitioning in DBMS designing microservice architectures (fault tolerance requirements) other APIs TypeScript Linux usage (installing packages) writing a reproducible Docker image for development designing non-microservice architectures (performance requirements) Nest.js framework Nest.js application deployment in cluster infrastructure SQL performance issues in SQL queries Linux usage (launching executables with environment variables) design patterns (data bus) websocket Linux usage (finding and killing processes) Linux usage (checking folder permissions) designing microservice architectures (performance requirements) serialization (JSON) JavaScript designing non-microservice architectures (fault tolerance requirements) HTTP protocols REST APIs design patterns (microservices) use of indexes in DBMS normalization in DBMS design patterns (interfaces)

web application scaling principles neural networks for generating recommendations distributed architecture neural networks for speeding up operations SQL databases NestJS TypeORM TypeScript development NoSQL databases

Kafka Nest.js with ORM Sequelize Nest.js with Apollo GraphQL Server Nest.js PostgreSQL Redis NodeJS Clickhouse Kubernetes nginx haproxy OpenTelemetry

Nest.js PostgreSQL Redis Kafka Clickhouse nginx Kubernetes haproxy Opentelemetry NodeJS

Node.js Internal API connection External API connection Node.js applications development and maintenance NestJS API stability enhancement Architecture optimization for scalability Smart contracts integration on TON API testing

REST and other APIs Linux usage WebSocket key design patterns Linux usage Nest.js framework TypeScript database performance from application perspective application deployment in clustered infrastructure JavaScript performance optimization in SQL queries Linux usage Linux usage SQL Linux usage HTTP protocols serialization with JSON database partitioning microservices architecture design under performance requirements Docker images for development Nest.js architecture design beyond microservices under performance requirements architecture design beyond microservices under fault tolerance requirements database indexes database normalization microservices architecture design under fault tolerance requirements

REST other APIs identifying bottlenecks in query performance writing raw queries designing non-microservice architectures Linux: killing processes application deployment in clustered infrastructure SQL WebSocket database performance factors (indexes) writing reproducible Docker images database performance factors (partitioning) serialization (JSON) Linux: finding processes database performance factors (normalization) Nest.js framework capabilities Linux: installing packages Linux: checking folder permissions Linux: launching executables with environment variables designing microservice architectures HTTP protocols design patterns (microservices data buses interfaces) Nest.js JavaScript TypeScript query performance analysis

implementing authorization mechanisms using JWT architectural principles in Nest.js modularity in Nest.js TypeScript Nest.js framework Sequelize for database interaction implementing authentication mechanisms using JWT ORM for database interaction interfaces in TypeScript tools for code quality control relational databases TypeORM for database interaction TypeScript advanced types in TypeScript web application security principles Node.js version control systems Git dependency injection (DI) in Nest.js ESLint branching methodologies Feature Branch Workflow generics in TypeScript clean maintainable code Prisma ORM for database interaction branching methodologies GitFlow types in Node.js utilities in TypeScript

application deployment in clustered infrastructure architecture design for fault tolerance requirements TypeScript Linux process management Linux environment variables SQL Docker image creation architecture design for performance requirements Nest.js development database partitioning REST key design patterns (data buses) key design patterns (microservices) indexes in databases key design patterns (interfaces) HTTP protocols microservice architecture design JavaScript database performance impacts from the application side websockets Nest.js framework capabilities performance bottlenecks in queries Linux package installation Linux folder permissions other APIs serialization (JSON) database normalization

docker-compose NestJS Redis GIT Docker APIs PostgreSQL TypeScript

PostgreSQL NodeJS Redis TypeORM Git Designing REST APIs NestJS

NodeJS NestJS Git PostgreSQL Redis version control systems Designing REST API TypeORM

Nest.js stack RabbitMQ microservices architecture MongoDB PostgreSQL IT field code reviews

blockchain platforms integration NestJS web3 libraries DEX exchanges structure DEX exchanges principles optimizing high-load applications PostgreSQL TypeScript Redis NodeJS TypeOrm microservices architecture RabbitMQ

E2E tests Docker Compose Containerization Docker MongoDB Unit tests Backend development Design approaches DDD Design approaches Hexagonal architecture NestJS TypeScript Experience in product companies Node.js MySQL Message brokers RabbitMQ

Javascript Typescript database management systems PostgreSQL Node.js Node.js backend service development containerization tools Nest.js Docker

TypeScript MySQL backend development NestJS PostgreSQL Git version control systems

Model-View-Controller (MVC) Linux PostgreSQL Object-Oriented Programming (OOP) Git MySQL NodeJS NEST JS JavaScript ES6+

Node.js Git JavaScript MySQL Node.js Node.js Sequelize Express

optimization in PostgreSQL queries in PostgreSQL NestJS architecture database design using PostgreSQL designing RESTful APIs backend development with NodeJS NestJS dependency injection backend development with PostgreSQL integration of frontend applications with backend services HTML5 NestJS decorators TypeScript PostgreSQL databases data exchange formats such as JSON data serialization data deserialization CSS3 frontend frameworks advanced coding standards RESTful API HTTP protocol modern authorization mechanisms such as JSON Web Token advanced coding practices NestJS framework NestJS modules JavaScript implementing RESTful APIs

designing microservices indexes NestJS event-driven architecture Docker for development of microservices PostgreSQL transactions message broker Node.js Redis TypeScript REST API Docker for deployment of microservices