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Contract Java Developer C2C Jobs in Colorado (NOW HIRING)

Spartan X Corp

Java Developer

Denver, CO · On-site

$60/hr

... W2 / C2C / 1099 Please note we are unable to provide H1B visa sponsorship. About the Role We are ... seeking an experienced Java Developer Contractor to support the design, development, and ...

Compri Consulting

Senior Java Software Engineer

Denver, CO · On-site

$128K - $169K/yr

... Developer for a long term contract position. Candidates must currently reside in the state of ... No third party/C2C candidates are able to be considered at this time. Required -5+ years of Java ...

Transcend Softech LLC

Java Developer

Denver, CO · On-site

$52.50 - $68/hr

Position: Java Developer Location: Denver, CO Long Term Contract Unable to provide sponsorship for this role. * Experience in analysis, design, development, and maintenance of client server ...

InstantServe LLC

Java Developer

Denver, CO · On-site

$52.50 - $68/hr

Java Developer Requisition ID: SB26-149-DEV Client: Colorado Judicial Branch (CO Judicial ... Work Schedule Monday - Friday Standard business hours Contract Duration Start Date: July 27, 2026 ...

Infojini Inc

Senior Java Developer

Denver, CO

$59 - $75.25/hr

We are looking for Senior Java Developer in Denver, CO for 6 months contract position. Please send your resume along with rate expectation. Please refer someone else if you are not available at this ...

Hirekeyz Inc

Full Stack Java Developer

Denver, CO · On-site

$54 - $69.75/hr

Denver, CO & Nashville, TN (Onsite) Duraction: Long Term Contract Job Overview We are seeking a skilled Full Stack Java Developer . The ideal candidate will have strong experience in both backend and ...

Cymertek

Java / Spring Developer

Aurora, CO · On-site

$52 - $67.25/hr

Java / Spring Developer LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek

Java / Spring Developer

Aurora, CO · On-site

$52 - $67.25/hr

Java / Spring Developer LOCATIONAurora, CO 80014 CLEARANCETS/SCI Full Poly (Please note this ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Peraton

Mid-level Java Developer

Colorado Springs, CO

$86K - $138K/yr

Peraton is seeking a Java Developer to help build Web and backend application/services for a ... and contract considerations. Depending on the position, employees may be eligible for overtime ...

Peraton

Mid-level Java Developer

Colorado Springs, CO · On-site

$86K - $138K/yr

Peraton is seeking a Java Developer to help build Web and backend application/services for a ... and contract considerations. Depending on the position, employees may be eligible for overtime ...

Peraton

Mid-level Java Developer

Colorado Springs, CO · On-site

$86K - $138K/yr

Peraton is seeking a Java Developer to help build Web and backend application/services for a ... and contract considerations. Depending on the position, employees may be eligible for overtime ...

Sysazzle

Application Developer IV

Denver, CO · On-site

Application Developer IV Duration: 5-6 month contract Location: Denver, CO, (Remote) Description: Senior Java Developer We are seeking a Senior Java Developer who will be responsible for designing ...

Northstrat

Java Developer CF

Aurora, CO · On-site

$51.75 - $67/hr

Northstrat is seeking a Java Software Developer to join an established program comprised of ... and contract wage rates, relevant prior work experience, specific skills and competencies ...

Cymertek

Java, Scala, Python Developer

Aurora, CO · On-site

Java, Scala, Python Developer LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek

Java Software Engineer

Aurora, CO · On-site

$52.75 - $72.25/hr

SIMILAR CAREER TITLES Java Developer, Backend Developer, Full Stack Developer, Software Engineer ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

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All JobsContract Java Developer C2C JobsContract Java Developer C2C Jobs in Colorado

Contract Java Developer C2C information

What is the difference between Contract Java Developer C2C vs Contract Java Developer W2?

AspectContract Java Developer C2CContract Java Developer W2
Employment TypeIndependent contractor, self-employedEmployee of the staffing agency or company
Tax & BenefitsResponsible for own taxes, no benefits includedTaxes withheld by employer, includes benefits like health insurance
Work EnvironmentTypically remote or client-site, project-basedUsually on-site or hybrid, with more structured hours
Payment StructureInvoicing clients, higher hourly rateSalary or hourly wage, includes payroll taxes

Contract Java Developer C2C and Contract Java Developer W2 differ mainly in employment status, tax responsibilities, and benefits. C2C offers more independence and potentially higher pay but requires managing taxes and benefits independently. W2 provides a more traditional employment setup with benefits and tax withholding. The choice depends on your preference for independence versus stability.

What are the most commonly searched types of Java Developer C2C jobs in Colorado? The most popular types of Java Developer C2C jobs in Colorado are:
What are popular job titles related to Contract Java Developer C2C jobs in Colorado? For Contract Java Developer C2C jobs in Colorado, the most frequently searched job titles are:
What job categories do people searching Contract Java Developer C2C jobs in Colorado look for? The top searched job categories for Contract Java Developer C2C jobs in Colorado are:
What cities in Colorado are hiring for Contract Java Developer C2C jobs? Cities in Colorado with the most Contract Java Developer C2C job openings:
Contract Java Developer C2C jobs near you
Infographic showing various Contract Java Developer C2C job openings in Colorado as of July 2026, with employment types broken down into 1% As Needed, 65% Full Time, 19% Part Time, 1% Temporary, and 14% Contract. Highlights an 80% Physical, 2% Hybrid, and 18% Remote job distribution.
Java Developer

Java Developer

Spartan X Corp

Denver, CO • On-site

$60/hr

Full-time

Medical, Dental, Vision, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Job description

MUST LIVE IN COLORADO (Onsite every Tuesday at the Ralph Carr Judicial Complex, 1300 Broadway, Denver)

Hybrid Remote / W2 / C2C / 1099

Please note we are unable to provide H1B visa sponsorship.

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.t, product analyst).

Company Description

Spartan X Corp was founded by a diverse team of military veterans with comprehensive real-world experience. As veterans, honor is the cornerstone of quality that drives our commitment to every mission. As a leading Service-Disabled Veteran-Owned Small Business (SDVOSB) contractor to the U.S. government and her allies, our team will do whatever it takes to ensure our client's success.
​Spartan leverages deep domain expertise and competencies across a wide range of skill sets and technologies to deliver innovative, reliable solutions. This balance of design and performance is guided by proven processes and oversight to ensure safety, security, and measurable results.
​We stand on decades of military service and government contracting experience to execute efficiently and in good faith. We understand the trust placed in us by our customers and the American taxpayer, and we honor that trust by operating with integrity and delivering on every task within the terms and intent of our mission.