JAVA SENIOR ENGINEER

SIDRAM TECHNOLOGIES; Denver (CO); On-site; USD 140,000 - 190,000; Full time

Job summary

CO Judicial in Denver, CO is seeking a Java Senior Engineer to lead backend development, REST APIs, and AWS cloud deployments in a contractor environment with full-time hours onsite. The role demands a 15+ year track record and deep expertise in Java 21 and Spring.

The candidate should be proficient in REST, JSON, HTML/CSS/JS, GitLab CI/CD, and cloud services (API Gateway, DynamoDB, ECS). On-site schedule is 8:00 AM–5:00 PM MST.

Qualifications

• 15+ years of professional Java development experience
• Java SDK 21 or recent Java versions
• Spring Boot / Spring Framework
• REST API development and integration
• JSON and API integration patterns
• HTML, CSS, JavaScript
• Git / GitLab
• GitLab CI/CD
• AWS application development/deployment/support
• Strong troubleshooting and problem-solving skills
• Ability to work independently in a contractor environment
• AWS / Cloud Experience
• Amazon ECS
• API Gateway
• DynamoDB
• AWS cloud application support
• Cloud deployment and troubleshooting

Responsibilities

• We do not have explicit job responsibilities described beyond candidate capabilities; responsibilities inferred include backend development, REST API work, and cloud services integration.

Skills

Java development

REST API development

JSON integration

Frontend basics

Git version control

Troubleshooting

Independent contractor work

AI-assisted coding tools

Secure coding practices

AI-assisted coding tools

Tools

AWS

GitLab CI/CD

Terraform

IntelliJ IDEA

AWS ECS

API Gateway

DynamoDB

Job description

LOCAL CANDIDATES ONLY

NOW HIRING: JAVA SENIOR ENGINEER

Client: CO Judicial

Requisition: Java Senior Engineer / Java Developer

Location: Denver, CO

Address: 1300 Broadway, Suite 1100, Denver, CO 80203

Employment: W2 / C2C CONTRACT ONLY

Experience: 15+ YEARS REQUIRED

Quantity: 1 Position

Contract Duration: 12/01/2026 06/30/2027

Schedule: Monday Friday | 8 Hours/Day

Hours: 8:00 AM 5:00 PM MST

Work Authorization: USC / H4-EAD / Green Card

GC Candidates: Born Before 1985

Local Candidates Required

MUST-HAVE SKILLS

• 15+ years of professional Java development experience
• Java SDK 21 or recent Java versions
• Spring Boot / Spring Framework
• REST API development and integration
• JSON and API integration patterns
• HTML, CSS, JavaScript
• Git / GitLab
• GitLab CI/CD
• AWS application development/deployment/support
• Strong troubleshooting and problem-solving skills
• Ability to work independently in a contractor environment
• Aws / Cloud Experience
• Amazon ECS
• API Gateway
• DynamoDB
• AWS cloud application support
• Cloud deployment and troubleshooting

Preferred Skills

• Thymeleaf
• Terraform / Infrastructure as Code
• IntelliJ IDEA
• GitLab CI/CD pipelines
• Application logs and cloud troubleshooting
• Secure coding practices
• AI-assisted coding tools such as Claude Code, GitHub Copilot, Cursor, etc.

TECHNICAL ENVIRONMENT

Java 21 | Spring Boot | Spring Framework | Thymeleaf | REST APIs | JSON | HTML | CSS | JavaScript | AWS | ECS | API Gateway | DynamoDB | GitLab | GitLab CI/CD | Terraform | IntelliJ IDEA | AI-Assisted Development

IDEAL CANDIDATE

Looking for a 15+ year experienced Senior Java Developer who can work across backend development, REST APIs, AWS cloud services, lightweight front-end development, CI/CD pipelines, and modern application development.