Sr. Java Developer - Hybrid

Dice is the leading career destination for tech experts at every stage of their careers. Our client, MSYS Inc., is seeking the following. Apply via Dice today!Title:Sr. Java Developer - HybridLocation:Golden,COLength:Long termRestriction:w2 or c2cDescription: Mode of Interview:- Webcam Interview *** Longterm Project *** Hybrid (3days per Onsite) at Golden-CO *** Only local to CO***Description:-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 ECSAmazon API GatewayAmazon DynamoDBFamiliarity 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 21Spring Boot / Spring FrameworkThymeleafREST APIsJSONHTML / CSS / JavaScriptAWS, including ECS, API Gateway, and DynamoDBGitLab repositoriesGitLab CI/CD pipelinesTerraformIntelliJ IDEAAI-assisted coding tools, including exploration of Claude Code