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Freelance Java Spring Developer Jobs in Olivette, MO

The Giant Bullseye

Senior Java Engineer

Saint Louis, MO

$55.75 - $71/hr

The ideal candidate will have deep expertise in Java, Spring Boot, and microservices architecture ... Collaborate with cross-functional teams including DevOps, QA, and product to deliver high-quality ...

Tanisha Systems

Java Software Developer

Saint Louis, MO · Hybrid

$50 - $55/hr

Deep hands-on expertise in Java/Spring Boot, Oracle/SQL, and Kafka required with the ability to ... engineering workflows and developer productivity Establish engineering standards, lead design ...

Palnar

Backend Java Engineer W/IBM MQ Exp

O Fallon, MO · On-site

$47.25 - $61.25/hr

Senior Software Development Engineer (Specialty) - Level 7 Location: O'Fallon, MO/Hybrid Duration ... Proficient in core java * Spring boot preferred. * Messaging services * MQ's or any other tool ...

TDK Technologies

Senior Java Developer

O Fallon, MO

$53.50 - $68.25/hr

* Extensive knowledge and experience with Java, Spring Boot, gRPC * Good knowledge in creation and working with CI/CD pipelines using Jenkins * Experienced in event driven systems (ActiveMQ, Apache ...

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Freelance Java Spring Developer information

See Olivette, MO salary details

$14

$53

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How much do freelance java spring developer jobs pay per hour?

As of Jun 18, 2026, the average hourly pay for freelance java spring developer in Olivette, MO is $53.16, according to ZipRecruiter salary data. Most workers in this role earn between $45.96 and $59.52 per hour, depending on experience, location, and employer.

What is the difference between Freelance Java Spring Developer vs Java Backend Developer?

AspectFreelance Java Spring DeveloperJava Backend Developer
CredentialsOften requires Java certifications, Spring certifications, and relevant experienceTypically requires a Java degree or equivalent experience, with or without certifications
Work EnvironmentIndependent, project-based, remote or on-site freelance workFull-time employment in a company or organization, often in an office setting
Employer & Industry UsageClients across various industries hiring for specific projectsEmployers in tech, finance, e-commerce, and other sectors with ongoing backend needs
Search & Comparison IntentLooking for freelance opportunities or contract work in Java Spring developmentSeeking full-time or permanent backend development roles in Java

In summary, Freelance Java Spring Developers typically work independently on short-term projects, requiring specific certifications and flexible work environments. Java Backend Developers usually hold full-time roles within organizations, focusing on ongoing backend system development.

What is a Freelance Java Spring Developer?

A Freelance Java Spring Developer is a self-employed software professional who specializes in building, maintaining, and optimizing applications using the Java programming language and the Spring framework. These developers work on a contract or project basis for various clients, rather than as full-time employees for a single company. Their responsibilities often include designing backend systems, integrating APIs, and ensuring applications are scalable and secure. Freelance Java Spring Developers typically manage their own schedules and may work remotely for clients around the world.

What are the key skills and qualifications needed to thrive as a Freelance Java Spring Developer, and why are they important?

To thrive as a Freelance Java Spring Developer, you need a solid understanding of Java programming, Spring Framework (including Spring Boot), and experience with RESTful APIs, typically supported by a degree in computer science or relevant certifications. Familiarity with tools like Maven, Git, Docker, and cloud platforms such as AWS or Azure is often required. Strong problem-solving, time management, and client communication skills help you stand out in this role. These competencies ensure you can deliver robust solutions efficiently while managing multiple clients and projects in a dynamic freelance environment.

What are the most common challenges faced by Freelance Java Spring Developers when working with multiple clients simultaneously?

Freelance Java Spring Developers often juggle projects for multiple clients, which can pose challenges such as managing shifting priorities, aligning with different coding standards, and keeping up with varied communication styles. Successfully navigating these requires strong organizational skills, clear project documentation, and proactive communication to set expectations. Additionally, freelancers must stay updated with the latest Spring framework updates to deliver high-quality, maintainable solutions across diverse client environments.
Freelance Java Spring Developer jobs near you
Java/Spring boot Developer

Java/Spring boot Developer

Avani Technology Solutions, Inc.

Saint Louis, MO • On-site

$49.25 - $63.75/hr

Full-time

Posted 12 days ago

Job description

Job Description:
  • Senior Java/Spring boot Developer Senior developer with following skills (no hard and fast expectation for years of experience but 5+ is good with them)
  • Hands on experience in implementing Micro services and Architecture using Apache open source projects like Mesos, Kafka,Cassandra, Hadoop.
  • Apache Tomcat, Spring Webservices, Spring Boot framework
  • Java and Web Services (RESTFul APIs)
  • Experience in implementing Docker containers for elastic scalability
  • Well versed with various exception handling techniques
  • Experience in developing, monitoring and logging framework
  • Experience in working in Telcos, especially DTV, Voice and HSD over DOCSIS type work.
  • Be able to create and interpret design documents based on specific design patterns Above all candidate should be Self-motivated and self-starter, be able to pick up and share knowledge swiftly, with "can do attitude" with good oral and written communication skills More specifically:
  • Use of Log4J or Logback (successor to Log4J) for generation of standardized disk log messages within services and applications
  • Experience creating test clients with SOAPUI
  • Experience performing performance testing of web services with JMeter and scripting input parameters from external input files
  • Experience with creating new web service and GUI app project trees using standard Maven 3.x directory tree layout
  • Experience using JUnit to create automated unit tests of all methods with web services using mock data

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