Mid-Level Fullstack Java/React/Node.js Developer

Starian

. Contribute to robust, sustainable, and results-oriented solutions .

Posted 11/9/2026full-timeRemote • BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Java 11+, Spring Framework, and React.js, with a strong focus on unit testing and AI development tools. Capable of mentoring junior developers while fostering a quality-driven software engineering environment.

Highest-signal resume keywords

Java 11+Spring FrameworkReact.jsUnit TestingAI Development Tools

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaSpringReactNode.jsJUnitMockitoSOLID PrinciplesClean CodeTDDPostgreSQL

Soft Skills

MentoringCollaborationCuriosity

Tools & Technologies

WindsurfGitHub CopilotJetBrains AIAnthropicChatGPTWildFly

Industry Keywords

Artificial IntelligenceDesign PatternsClean ArchitectureHexagonal Architecture

Tech Stack

Tools & technologies

HibernateJavaJavaScriptJUnitMockitoNode.jsPostgresReactSpring

About the role

Key responsibilities & impact

Contribute to robust, sustainable, and results-oriented solutions
Work with technical autonomy
Collaborate in planning activities
Mentor more junior developers
Help build a software engineering environment focused on quality, performance, and continuous improvement
Use AI tools such as Windsurf, Copilot, JetBrains AI, and Anthropic to accelerate development and test automation
Work with the Java, Spring, React, JUnit, Mockito, Git, and Hibernate technology stack
Apply a digital mindset, curiosity about new technologies, and an interest in Artificial Intelligence to the development of processes, experiences, and outcomes

Requirements

What you’ll need

Experience with Java 11+ and the Spring Framework
Experience with Node.js
Experience with React.js, including hooks, componentization, and REST API integration
Experience applying SOLID principles and knowledge of Design Patterns
Practical knowledge of Clean Code and Clean Architecture/Hexagonal Architecture
Strong experience with unit testing
Knowledge of TDD (Test-Driven Development)
Experience with relational databases such as PostgreSQL
Experience with Java application servers, especially WildFly
Experience using AI development tools such as GitHub Copilot, Windsurf, JetBrains AI, Anthropic, and ChatGPT
Knowledge of or interest in Artificial Intelligence technologies, including tools, applications, and concepts

Benefits

Comp & perks

Meal/food allowance
Health and dental insurance
Home office allowance
Profit Sharing and Results Participation
Setup Kit voucher
Life insurance
Birthday day off
GoGood | Conexa
Health and wellness promotion program
Partnerships and discounts
Diversity and inclusion support