Fullstack Developer, React, GenAI, .NET

Internas

Fullstack Developer responsible for conceptualizing and developing robust solutions at Vagas Internas. Collaborating in a team-oriented environment with a focus on innovation and quality.

Posted 5/14/2026full-timeRemote • 🇧🇷 BrazilMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSCypressDockerGoGrafanaJavaScript.NETNext.jsPrometheusPythonReactRedisSplunkTerraformTypeScript

About the role

Key responsibilities & impact

Actively participate across the entire solution conception and development lifecycle, from the Discovery process—helping to identify the right problem to solve
Contribute to technical refinements to structure solution designs
Interact with interdependent squads to ensure alignment and integration of solutions
Develop frontend (React) and backend (.NET Core) layers as required, including unit tests to ensure quality and security
Ensure proper configurations for DevOps processes, and plan and monitor production deployments
Monitor the post-release environment to ensure stability and performance
Apply advanced AI techniques, using tools such as Python (LangChain, Langgraph), RAG, prompt engineering and agent evaluation (EVALs)
Work with AWS infrastructure (DocumentDB, Lambda, ECS, S3, Redis) and CI/CD tools (GitHub Actions, Terraform, Docker)
Collaborate on the development and integration of intelligent agents; knowledge of MCP and Go is a plus

Requirements

What you’ll need

Next.js with React 18+
Knowledge of accessibility (WCAG standards)
Responsive design
.NET Core
Code versioning (GitLab/GitHub)
Object-oriented design, design patterns, SOLID and Clean Code
Development and consumption of REST APIs
Code quality (SonarQube, Fortify, unit test coverage)
Advanced code review techniques
Advanced knowledge of the AWS ecosystem (CodePipeline, pipeline workflows)
Microfront-end architecture (Web Components, Module Federation, Single SPA)
Advanced knowledge in AWS (domain expertise across the ecosystem, pipeline workflows, CodePipeline)
Advanced knowledge of design patterns
Mastery of observability techniques (Splunk, Grafana, Prometheus)
Microsoft/.NET certifications are an important diferencial
React 18+ with TypeScript — including native hooks and composition patterns (useCallback, useMemo, useReducer)
Experience with Next.js (App Router, SSR/SSG/ISR, bundle optimization)
Knowledge of Web Components and integration with React
Creation and maintenance of custom hooks with well-defined responsibilities
Context API / state management without external libraries
Unit tests with Testing Library and E2E tests with Cypress (test coverage)
Conventional Commits and Git best practices

Benefits

Comp & perks

We value the continuous growth of our zuppers, encouraging each person to pursue paths that drive their professional development.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

React.NET CorePythonRAGprompt engineeringunit testsREST APIsobject-oriented designdesign patternsmicrofront-end architecture

Soft Skills

collaborationproblem-solvingcommunicationtechnical refinementmonitoringalignmentintegration

Certifications

Microsoft/.NET certifications