Java Backend Engineer - Spring Boot, AWS, REST APIs

RESOURCESOFT, INC.; Denver (CO); On-site; USD 120,000 - 150,000; Full time

Job summary

Resourcesoft, Inc. in Denver, CO is seeking a Senior Java Developer to design, build, and maintain enterprise Java applications using modern SDKs including Java 21, Spring Boot, and RESTful services.

You will integrate AWS services, develop REST APIs, and contribute to CI/CD pipelines with GitLab, while supporting lightweight frontend work with Thymeleaf and web technologies where needed.

Qualifications

• 5+ years developing Java applications, including modern SDK versions (Java 21).
• Proficiency with Spring Boot and the broader Spring Framework for backend development.
• Experience designing, building, and consuming REST APIs with JSON-based patterns.
• Experience with AWS services such as ECS, API Gateway, and DynamoDB.
• Experience with GitLab source control and GitLab CI/CD pipelines.
• Excellent verbal and written communication skills.

Responsibilities

• Design, develop, test, and maintain Java-based applications using modern SDK versions.
• Build and enhance applications with Spring Boot and the Spring Framework.
• Develop and maintain REST APIs and JSON-based integrations.
• Support smaller web applications using Thymeleaf, HTML, CSS, and JavaScript.
• Work with AWS infrastructure, including ECS, API Gateway, and DynamoDB.
• Build, maintain, and troubleshoot CI/CD pipelines, and support infrastructure-as-code efforts using Terraform.

Skills

Java (5+ yrs)

Spring Boot

REST APIs

AWS

GitLab CI/CD

Communication

Tools

Terraform

GitLab

Job description

Resourcesoft, Inc. in Denver, CO is seeking a Senior Java Developer to design, build, and maintain enterprise Java applications using modern SDKs including Java 21, Spring Boot, and RESTful services.

You will integrate AWS services, develop REST APIs, and contribute to CI/CD pipelines with GitLab, while supporting lightweight frontend work with Thymeleaf and web technologies where needed.