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Freelance Java Backend Developer Jobs in Missouri

Back End Engineer

Columbia, MO · On-site

$90 - $120/hr

Help Millions Access Affordable Healthcare: Backend Engineer at Paytient (Remote-Friendly ... Strong Java or other OOP language skills. * Experience building microservices, distributed systems ...

Back End Software Engineer

Berkeley, MO · On-site

$126.65 - $217.35/hr

In this backend developer position, you will develop prototypes and new capabilities for web ... Strong experience with Go or Java * Basic C++ or Python * Familiar with Kafka, NiFi, Redis, or ...

Our partner is looking for a Backend Engineer - API Integrationen, Connectoren, Worker/Jobs, Mailer ... Freelance or project-based experience is suitable for this engagement. Benefits * 100% remote ...

Backend Engineer III

California, MO · On-site

$120 - $170/hr

Lead backend engineering efforts from rapid prototypes to large-scale applications across ... Go, Scala, Java, Node.js or Python (We use Go extensively). * The ability to scale backend systems ...

Job Discription Java Programming language - Candidate will have an opportunity to work directly with the users, business analyst, translate business requirements into the technical architecture and ...

Java Developer

O Fallon, MO · On-site

$47.75 - $61.75/hr

Java Engineer Onsite( 5days) O''Fallon, Missouri An ideal candidate for this role would have ... This level of database knowledge is crucial for data-heavy applications and backend services.

Showing results 21-40

Freelance Java Backend Developer information

What are the most commonly searched types of Java Backend Developer jobs in Missouri?

The most popular types of Java Backend Developer jobs in Missouri are:

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Cities in Missouri with the most Freelance Java Backend Developer job openings:

Core Java Developer

Stellar IT Solutions LLC

Saint Louis, MO • Remote

$50 - $55/hr

Contractor

Posted 15 days ago


Job description

Position: Core Java Developer Location: Remote

Duration: 6+ Months Contract

Role Overview

We are seeking experienced Senior Core Java Developers to join our team and contribute to building secure, scalable, and production‑ready applications. The ideal candidate will have strong expertise in Java, microservices architecture, and containerization, with hands‑on experience in developing REST APIs and implementing secure coding practices. This role requires deep technical proficiency in backend engineering, combined with the ability to collaborate across teams and deliver high‑quality solutions in enterprise environments.

Key Responsibilities
  • Design, develop, and maintain Core Java applications with a focus on scalability and performance.

  • Build and integrate microservices architectures using Spring Boot, Spring Security, and Spring Web MVC.

  • Develop and optimize REST APIs for secure and efficient communication between services.

  • Implement secure coding practices to remediate vulnerabilities and ensure compliance with enterprise standards.

  • Work with containerization platforms (Docker, Kubernetes, OpenShift) to deploy and manage applications.

  • Collaborate with cross‑functional teams including QA, DevOps, and product owners to deliver production‑ready solutions.

  • Conduct code reviews, troubleshoot issues, and provide technical guidance to junior developers.

  • Support CI/CD pipelines and ensure smooth deployment processes.

Required Skills
  • Strong expertise in Core Java development.

  • Hands‑on experience with containerization (Docker, Kubernetes, OpenShift).

  • Proficiency in microservices architecture and REST API development.

  • Solid knowledge of Spring Boot, Spring Security, Spring Web MVC.

  • Experience with secure coding practices and vulnerability remediation.

Nice to Have
  • Experience with Harness for CI/CD orchestration.

  • Familiarity with Postman or other API testing tools.

  • Exposure to Red Hat OpenShift for enterprise container management.