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Denver, CO
Posted · 27.09.2026
LinkedIn Jobs US

# Java Developer

Haystack

We are partnering with a dynamic and innovative technology firm that delivers cutting-edge software solutions to clients, enabling them to build robust and scalable applications. This company is known for its forward-thinking approach and commitment to leveraging modern development practices. The Role Design, develop, test, and maintain Java-based applications using Java SDK 21. Build and enhance applications using Spring Boot and the Spring Framework. Develop and maintain REST APIs and JSON-based integrations. Support web applications using Thymeleaf, HTML, CSS, and JavaScript. Work with AWS services including ECS, API Gateway, and DynamoDB. Participate in application architecture, implementation decisions, code reviews, and deployment practices. What You'll Need Strong professional experience developing applications with Java (Java 21 or recent versions). Solid experience with Spring Boot and Spring-based application development. Experience designing, building, and consuming REST APIs with strong knowledge of JSON. Familiarity with HTML, CSS, and JavaScript. Experience with Git-based source control and CI/CD pipelines (preferably GitLab CI/CD). Practical experience developing, deploying, or supporting applications in AWS. What's On Offer Opportunity to work on challenging projects with modern tech stack. Collaborative and dynamic work environment. Focus on sound software engineering practices. Potential to leverage AI-assisted coding tools for productivity. Apply via Haystack today!

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