Job description

Description Java Developer Contractor About the Role We are seeking an experienced Java Developer Contractor to support the design, development, and maintenance of web applications, backend services, and cloud-based solutions. This role is ideal for someone who is comfortable working across the Java/Spring ecosystem, building REST APIs, integrating with AWS services, and contributing to modern CI/CD-driven development workflows. The right candidate will be hands-on, pragmatic, and comfortable working independently while collaborating with technical and business stakeholders. Responsibilities • Design, develop, test, and maintain Java-based applications using Java SDK 21 . • Build and enhance applications using Spring Boot and the broader Spring Framework . • Develop and maintain REST APIs and JSON-based integrations. • Support smaller web applications using Thymeleaf , HTML, CSS, and JavaScript. • Work with AWS-based infrastructure and services, including ECS , API Gateway , and DynamoDB . • Contribute to source control and development workflows using GitLab . • Build, maintain, and troubleshoot GitLab CI/CD pipelines . • Collaborate with team members on application architecture, implementation decisions, code reviews, and deployment practices. • Support infrastructure-as-code efforts, especially where Terraform is used. • Use IntelliJ IDEA as the primary development environment. • Apply sound software engineering practices, including maintainable code design, testing, documentation, and operational awareness. • Where appropriate, leverage AI-assisted coding tools to improve development productivity and code quality. Required Qualifications • Strong professional experience developing applications with Java . • Experience with Java 21 or recent versions of the Java SDK. • Solid experience with Spring Boot and Spring-based application development. • Experience designing, building, and consuming REST APIs . • Strong working knowledge of JSON and API integration patterns. • Familiarity with front-end technologies including HTML, CSS, and JavaScript . • Experience using Git-based source control, preferably GitLab . • Experience working with CI/CD pipelines, preferably GitLab CI/CD . • Practical experience developing, deploying, or supporting applications in AWS . • Ability to work independently, communicate clearly, and deliver high-quality work in a contractor capacity. Preferred Qualifications • Experience with Thymeleaf for server-side templating. • Hands-on experience with AWS services such as: • Amazon ECS • Amazon API Gateway • Amazon DynamoDB • Familiarity with Terraform or other infrastructure-as-code tools. • Experience using IntelliJ IDEA in a professional development environment. • Familiarity with AI-assisted development tools such as Claude Code , GitHub Copilot, Cursor, or similar tools. • Experience troubleshooting cloud deployments, application logs, build pipelines, and environment-related issues. • Understanding of secure coding practices and cloud application security concepts. Technical Environment Our current technology stack includes: • Java SDK 21 • Spring Boot / Spring Framework • Thymeleaf • REST APIs • JSON • HTML / CSS / JavaScript • AWS, including ECS, API Gateway, and DynamoDB • GitLab repositories • GitLab CI/CD pipelines • Terraform • IntelliJ IDEA • AI-assisted coding tools, including exploration of Claude Code Ideal Candidate The ideal candidate is a strong Java developer who can move comfortably between backend development, lightweight front-end work, cloud-based deployments, and CI/CD workflows. They should be able to understand existing systems quickly, contribute clean and maintainable code, and work effectively in a modern cloud-oriented development environment. Experience with AWS, GitLab pipelines, Terraform, and AI-assisted coding tools is highly valued. Engagement Type This is a contractor position . The contractor will work with our development team to deliver application enhancements, new features, integrations, and platform improvements. Estimated Duration 12/01/2026 - 06/30/2027 Schedule Days Monday Yes Tuesday Yes Wednesday Yes Thursday Yes Friday Yes Saturday No Sunday No Hours/Day 8 Time Zone MST Shifts Start Time End Time Description Active Shift 1 8:00 AM 5:00 PM Yes Location : Position Location - Hybrid Address 1300 Broadway, Suite 1100 Denver , Colorado 80203 By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at Privacy Policy - Abacus .

Requirements

Must-haves

Java Developer Contractor
The right candidate will be hands-on, pragmatic, and comfortable working independently while collaborating with technical and business stakeholders.
Design, develop, test, and maintain Java-based applications using Java SDK 21 .
Build and enhance applications using Spring Boot and the broader Spring Framework .
Develop and maintain REST APIs and JSON-based integrations.
Support smaller web applications using Thymeleaf , HTML, CSS, and JavaScript.
Work with AWS-based infrastructure and services, including ECS , API Gateway , and DynamoDB .
Contribute to source control and development workflows using GitLab .
Build, maintain, and troubleshoot GitLab CI/CD pipelines .
Collaborate with team members on application architecture, implementation decisions, code reviews, and deployment practices.
Support infrastructure-as-code efforts, especially where Terraform is used.
Use IntelliJ IDEA as the primary development environment.
Apply sound software engineering practices, including maintainable code design, testing, documentation, and operational awareness.
Where appropriate, leverage AI-assisted coding tools to improve development productivity and code quality.
Strong professional experience developing applications with Java .
Experience with Java 21 or recent versions of the Java SDK.
Solid experience with Spring Boot and Spring-based application development.
Experience designing, building, and consuming REST APIs .
Strong working knowledge of JSON and API integration patterns.
Familiarity with front-end technologies including HTML, CSS, and JavaScript .
Experience using Git-based source control, preferably GitLab .
Experience working with CI/CD pipelines, preferably GitLab CI/CD .
Practical experience developing, deploying, or supporting applications in AWS .

Nice-to-haves

Experience with Thymeleaf for server-side templating.

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

javarestawsci/cdjavascriptapiai

Platform: jobdiva
Effort: medium

Benefits

Benefits detected in the listing.

Professional Development