Full Stack Developer

Description

Opportunity to work at Alphatec as a **Full Stack Developer**. **Salary: R$10.000,00 PJ** We are seeking a Full Stack Developer with solid experience in React, TypeScript, C#, ASP.NET Core, Entity Framework Core, and SQL Server to develop, maintain, and evolve corporate web applications. The professional will be responsible for developing modern interfaces, APIs, business logic, integrations, automated tests, and scalable solutions, applying best practices in architecture, code quality, performance, and security. Proficiency in React (including Hooks, Context API, lifecycle, component patterns, and componentization best practices), TypeScript (including interfaces, generics, strong typing, and project configuration), JavaScript ES6+, Styled Components, Tailwind CSS, C#, ASP.NET Core (including Web API, middleware, dependency injection, configuration, and routing), Entity Framework Core (including Code First, migrations, Fluent API, DbContext, IQueryable, and query performance), SQL Server (including complex queries, data modeling, indexing, and performance tuning), Clean Architecture, Domain-Driven Design (DDD), CQRS with MediatR, SOLID principles, Dependency Injection, and unit testing is mandatory. Desirable qualifications include experience with Ant Design, React Native, Cypress, FormIO, RabbitMQ, MassTransit, Redis, Elasticsearch, Azure Blob Storage, Camunda BPM, Docker, FluentValidation, AutoMapper, Azure Pipelines, CI/CD, modular architecture, microservices, integration testing, and application of artificial intelligence to software development. **General Requirements:** \- Proven experience as a Full Stack Developer working on both frontend and backend development. \- Practical experience developing modern web applications, APIs, integrations, and corporate systems. \- Ability to participate in the entire software development lifecycle—from technical analysis through implementation, testing, bug fixing, and maintenance. \- Strong ability to interpret requirements, technical documentation, and business rules. \- Solid knowledge of software development best practices, software architecture, source code versioning, and technical quality. **Mandatory Technical Requirements — Frontend** Proficiency in React, including Hooks, Context API, lifecycle, component patterns, and componentization best practices. Advanced knowledge of TypeScript, including interfaces, generics, strong typing, and project configuration. Proficiency in JavaScript ES6+, including arrow functions, destructuring, promises, async/await, and modules. Experience styling with Styled Components and Tailwind CSS. Knowledge of CSS-in-JS, utility-first CSS, and modular styling. Familiarity with frontend architectural patterns such as MVVM, SOLID, and Feature-Based Architecture. Experience writing frontend unit tests using Vitest, Jest, React Testing Library, and mocking. Ability to develop reusable, responsive, performant, and easily maintainable interfaces. **Mandatory Technical Requirements — Backend** Proficiency in C#, including object-oriented programming, async/await, LINQ, generics, and coding best practices. Experience with ASP.NET Core, including Web API, middleware, dependency injection, configuration, and routing. Solid knowledge of Entity Framework Core, including Code First, migrations, Fluent API, DbContext, IQueryable, and query performance. Experience with SQL Server, including complex queries, data modeling, indexing, and performance tuning. Knowledge of Clean Architecture and DDD, with mastery of Domain, Application, Persistence, and Presentation layers. Experience with CQRS and MediatR, including commands, queries, handlers, result pattern, and decoupling. Knowledge of Repository Pattern and Unit of Work, focusing on data access abstraction and transactional control. Mastery of SOLID principles and appropriate use of Dependency Injection. Experience writing backend unit tests using xUnit, NSubstitute or Moq, FluentAssertions, and test doubles. Ability to develop scalable, performant, secure, and architecturally compliant solutions. **Desirable / Additional Qualifications:** **Frontend** Experience with Ant Design, especially in enterprise applications, advanced forms, tables, and reusable components. Knowledge of React Native and Expo for cross-platform mobile development. Experience with Cypress for end-to-end testing, integration testing, and test automation. Knowledge of FormIO, including form builder, JSON schema forms, dynamic rendering, and conditional logic. **Backend, Architecture, and Infrastructure** Experience with RabbitMQ and MassTransit, including message broker, event-driven architecture, pub/sub, and retry policies. Knowledge of Redis, distributed caching, performance optimization, session storage, and SignalR backplane. Experience with Elasticsearch, document indexing, full-text search, and analytics. Knowledge of Azure Blob Storage, SAS tokens, file management, cloud storage, and CDN integration. Experience with Camunda BPM, BPMN modeling, process automation, workflows, and business rules. Knowledge of Docker and Docker Compose, including containerization, multi-stage builds, orchestration, and development environments. Experience with FluentValidation and AutoMapper. Knowledge of Azure Pipelines, CI/CD, build automation, deployment pipelines, and environment management. Experience with modular architecture, shared SDKs, microservices, worker services, and service bus. Experience with integration testing using TestContainers, database seeding, and API testing. Experience applying artificial intelligence to software development—including code generation, review, documentation, estimation, maintenance, testing, and routine optimization. Compensation: R$10.000,00 per month Work Location: On-site