Senior Full-Stack Developer (Java/React) - Enterprise AI

CI&T; United States; Remote; USD 120,000 - 160,000; Full time

Benefits offered by this job

Health and dental insurance

Meal and food allowance

Childcare assistance

Extended paternity leave

Partnership with gyms and health and/w

Profit Sharing and Results PARTICIP

Job summary

CI&T is seeking a Senior-Master Full-Stack Developer to design, build, and support enterprise-scale web applications and microservices. You’ll work with React on the frontend and Java 21 / Spring Boot on the backend in an Agile environment.

You’ll collaborate across UX/UI, product, architecture, and QA teams to ensure secure, performant solutions, including OAuth2, OIDC, JWT, and robust monitoring. Remote-friendly EST work hours are common.

Qualifications

• Solid experience with full-stack development.
• Strong hands-on experience with React, modern JavaScript (ES6+), DOM APIs, and JSON.
• Proficient in backend development with Java, including older versions, and Spring Boot; recent hands-on experience required.
• Experience with microservices and enterprise integration patterns.
• Solid experience with RDBMS (MySQL or similar) and SQL.
• Good understanding of web security standards including JWT, authentication, and other security concepts.
• Excellent problem-solving, debugging, and communication skills.
• Candidates should demonstrate a structured approach to problem-solving and clarity in communication.
• Comfortable working in the EST time zone.
• Production support experience, including a strong understanding of application error handling and standard practices.

Responsibilities

• Design, develop, unit test, and integrate full-stack application components.
• Build scalable web applications using React frontend and Java 21 / Spring Boot backend.
• Implement RESTful APIs, microservices, and integrations with enterprise systems.
• Collaborate with UX/UI, product, architecture, and QA teams within an Agile environment.
• Create and maintain architecture, design, and system documentation.
• Ensure code quality, performance, and security (OAuth2, OIDC, JWT).
• Work with MySQL, Hibernate, Spring Data, and Spring Security.
• Provide production support and participate in on-call rotation; monitor and troubleshoot applications.

Skills

Full-stack development

React.js

Java/Spring Boot

Microservices

SQL/MySQL

Web security JWT

Problem solving

Communication

EST timezone

Production support

Tools

Hibernate

Spring Data

Spring Security

Job description

CI&T is seeking a Senior-Master Full-Stack Developer to design, build, and support enterprise-scale web applications and microservices. You’ll work with React on the frontend and Java 21 / Spring Boot on the backend in an Agile environment.

You’ll collaborate across UX/UI, product, architecture, and QA teams to ensure secure, performant solutions, including OAuth2, OIDC, JWT, and robust monitoring. Remote-friendly EST work hours are common.