Mid-level Java Developer

NIO

Backend Developer focused on Java and Spring Boot at NIO, an innovative company transforming digital connections in Brazil. Contribute to high-impact solutions in a collaborative team environment.

Posted 7/8/2026full-timeRemote • 🇧🇷 BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in developing and maintaining backend applications using Java and Spring Boot, with a strong focus on REST API implementation and relational database management. Demonstrates effective communication and teamwork skills while ensuring high-quality code through reviews and continuous improvement practices.

Highest-signal resume keywords

Java (8+)Spring BootREST API DevelopmentRelational Databases (PostgreSQL, MySQL, Oracle)Version Control (Git)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Java (8+)Spring BootREST API DevelopmentRelational DatabasesJPA/HibernateAutomated Testing (JUnit)Spring SecurityData ModelingBug FixingIncident Analysis

Soft Skills

CommunicationTeamworkOrganizational SkillsCommitment to DeadlinesAbility to Receive Feedback

Tools & Technologies

GitJUnitPostgreSQLMySQLOracle

Industry Keywords

Computer ScienceSoftware Engineering

Tech Stack

Tools & technologies

HibernateJavaJUnitMySQLOraclePostgresSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Develop and maintain backend applications in Java and Spring Boot.
Implement and evolve REST APIs.
Work with databases, performing queries, adjustments, and data modeling.
Ensure bug fixes and support incident analysis, maintaining application performance.
Participate in code reviews and technical refinements, contributing to continuous improvement of the codebase.

Requirements

What you’ll need

Hands-on experience with Java (8+) and solid knowledge of Spring Boot (Spring MVC, Spring Data).
Experience developing REST APIs and working with relational databases (PostgreSQL, MySQL, Oracle) using JPA/Hibernate.
Familiarity with version control (Git), basic knowledge of automated testing (JUnit), and Spring Security.
Willingness to learn and grow technically, with good communication and teamwork skills.
Organized and committed to meeting delivery deadlines, able to receive and apply technical feedback.
Bachelor's degree in Computer Science, Software Engineering, or a related field.

Benefits

Comp & perks

Meal and/or food allowance
Transportation allowance
Health insurance
Dental insurance
Life insurance
Private pension plan
Profit-sharing program (PPR)
Pharmacy assistance
Childcare assistance
Flexible working hours
V.tal Benefits Club
Extended maternity leave (6 months)
Extended paternity leave (20 days)