Java Developer Contractor Job Lakewood area,Colorado USA,Software Development

Requisition
-149-DEV

Requisition Name:
Java Developer

Location:

Denver, Colorado (Hybrid Locals only)
Duration: 12 Months
Client:
State of CO
Rate: $70/hr c2c

Experience:

15 Years

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 Git Lab.
Build, maintain, and troubleshoot Git Lab 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 Git Lab.
Experience working with CI/CD pipelines, preferably Git Lab 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, Git Hub 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 / Java Script
AWS, including ECS, API Gateway, and DynamoDB
Git Lab repositories
Git Lab CI/CD pipelines
Terraform
IntelliJ IDEA
AI‑assisted coding tools, including exploration of Claude Code

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