Java Developer

JPS Tech Solutions; Colorado; On-site; USD 83,000 - 152,000; Full time

Job summary

JPS Tech Solutions is seeking an experienced Java Developer Contractor to design, develop, and maintain web applications, backend services, and cloud-based solutions. The role focuses on Java/Spring ecosystem, REST APIs, and AWS integration, with emphasis on CI/CD workflows.

The candidate should be hands-on, work independently, and collaborate with technical and business stakeholders to deliver high-quality software.

Qualifications

• Strong professional experience developing Java applications.
• Experience with Java 21 or newer.
• Solid Spring Boot and REST API development skills.
• Familiarity with AWS services and DynamoDB.
• Experience with GitLab CI/CD pipelines.

Responsibilities

• Design, develop, test, and maintain Java-based applications using Java SDK 21.
• Build and enhance apps with Spring Boot and Spring Framework.
• Develop and maintain REST APIs and JSON integrations.
• Support web apps with Thymeleaf, HTML, CSS, and JavaScript.
• Work with AWS infrastructure (ECS, API Gateway, DynamoDB).
• Contribute to GitLab-based source control and CI/CD pipelines.
• Collaborate on architecture, reviews, and deployment practices.
• Support infrastructure-as-code efforts with Terraform.

Tools

Java

Java 21

Spring Boot

REST APIs

JSON

HTML

CSS

JavaScript

AWS

DynamoDB

ECS

API Gateway

Terraform

GitLab

GitLab CI/CD

Terraform

IntelliJ IDEA

Claude Code

Job description

Job Description

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:

• 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