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Freelance Junior Java Developer Jobs in California

Purple Drive

Senior/Advanced Java Developer

Thousand Oaks, CA · On-site

$60 - $76.50/hr

Mentor junior developers and provide technical leadership. Required Skills & Qualifications: * 8+ years of professional experience in Java application development. * Strong knowledge of Advanced Java ...

Jobsbridge

Fullstack Lead Developer

San Jose, CA

Senior/ Lead Developer should have experience mentoring junior Java Spring Web Services and Hibernate Spring version 4 JavaScript ANGULAR JS 2.0 Any JS Library (Prefer angular or knockout), bootstrap ...

Avalon Staffing

GE Java Developers

San Ramon, CA · On-site

$57 - $73.75/hr

Lead and guide Jr. developers. Qualifications/Requirements: Bachelor's degree in Computer Science ... Strong knowledge of OOD, software design patterns and principles Java 5/6 expert Strong knowledge ...

ERP Analysts

Jr Java developer

Pleasanton, CA · On-site

Company Description This is for an Innovation Lab, where they need someone with good coding skills on Core Java, Spring, Hibernate, SQL . REST API Some UI experience using JQuery, Angular ...

Jobsbridge

Core Java Developer

Palo Alto, CA

... mentoring junior designers - Review all project level data movement designs for adherence to ... Experience: - Extensive Java & JEE skills; along with Spring & Hibernate, JavaScript, shell ...

ERP Analysts

Jr Java developer

Pleasanton, CA · On-site

This is for an Innovation Lab, where they need someone with good coding skills on Core Java, Spring, Hibernate, SQL . REST API Some UI experience using JQuery, Angular , Javascript is good to have.

Sonsoft Inc

Core Java Developer (GC-USC)

Sunnyvale, CA · On-site

Strong knowledge in Core Java with knowledge of multithreading, concurrency, memory management and ... Ability to coach and mentor junior developers and on need basis customers * Ability to work in team ...

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Freelance Junior Java Developer information

What is the difference between Freelance Junior Java Developer vs Junior Java Developer?

AspectFreelance Junior Java DeveloperJunior Java Developer
Work EnvironmentIndependent, remote or contract-based projectsFull-time employment in a company or organization
CredentialsTypically requires basic Java knowledge, some coding experienceOften requires a degree or certification in computer science or related field
Employer & Industry UsageClients across various industries, project-basedEmployers in tech, finance, or enterprise sectors
Work ScopeLimited to specific projects, flexible hoursPart of a team, involved in ongoing development tasks

In summary, a Freelance Junior Java Developer works independently on short-term projects, often remotely, with flexible hours and minimal formal employment ties. In contrast, a Junior Java Developer is typically employed full-time within a company, working as part of a team on continuous development tasks, often requiring formal education or certifications.

What are some common challenges freelance junior Java developers face when starting out, and how can they overcome them?

Freelance junior Java developers often face challenges such as finding consistent projects, adapting quickly to different client codebases, and managing their own schedules and client communications. Building a strong online portfolio and actively networking in developer communities can help attract more clients. Additionally, setting clear expectations with clients and continuously improving technical and soft skills are key to overcoming early hurdles and building a successful freelance career.

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

To thrive as a Freelance Junior Java Developer, you need a solid grasp of Java programming, basic software development principles, and a relevant degree or coursework in computer science. Familiarity with tools like Eclipse or IntelliJ IDEA, version control systems such as Git, and an understanding of basic frameworks like Spring Boot are typically required. Strong problem-solving abilities, effective time management, and clear communication make you stand out when collaborating remotely with clients. These skills and qualities are essential to deliver reliable code, meet project deadlines, and build lasting professional relationships as a freelancer.

What is a Freelance Junior Java Developer?

A Freelance Junior Java Developer is an entry-level programmer who works independently on a contract basis, specializing in Java development. They typically handle coding, debugging, and basic software tasks for clients rather than being employed full-time by a single company. Freelance junior developers often work on smaller projects or assist senior developers, allowing them to gain experience and build their portfolios. This role requires a solid understanding of Java fundamentals and the ability to adapt to different project requirements.
What are popular job titles related to Freelance Junior Java Developer jobs in California? For Freelance Junior Java Developer jobs in California, the most frequently searched job titles are:
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Freelance Junior Java Developer jobs near you

Senior/Advanced Java Developer

Purple Drive

Thousand Oaks, CA • On-site

$60 - $76.50/hr

Other

Posted 28 days ago

Job description

Overview:
*************LOCAL ONLY***************
Job Description:
We are seeking a highly skilled Advanced Java Developer to design, develop, and optimize enterprise-grade applications. The ideal candidate will have strong expertise in core and advanced Java concepts, frameworks, and modern architectures to deliver high-performing, scalable, and secure applications.
Key Responsibilities:
  • Design, develop, and maintain enterprise applications using Java, Spring Boot, and related frameworks.
  • Implement multithreading, concurrency, and performance optimization techniques.
  • Work with JPA/Hibernate for persistence and database interactions.
  • Develop RESTful and microservices-based applications with Spring Cloud.
  • Implement secure coding practices including OAuth2, JWT, and role-based access control.
  • Optimize JVM performance and fine-tune applications using profiling tools.
  • Leverage design patterns and best practices for scalable system design.
  • Integrate applications with cloud platforms (AWS/Azure/GCP) and containerization tools (Docker, Kubernetes).
  • Collaborate with cross-functional teams in an Agile environment.
  • Mentor junior developers and provide technical leadership.
Required Skills & Qualifications:
  • 8+ years of professional experience in Java application development.
  • Strong knowledge of Advanced Java concepts (multithreading, concurrency, memory management).
  • Expertise in Spring Framework (Spring Boot, Spring Data, Spring Security).
  • Experience with microservices architecture and distributed systems.
  • Proficiency in REST API development, messaging systems (Kafka, RabbitMQ).
  • Strong experience with databases (SQL, NoSQL) and ORM tools.
  • Experience with CI/CD pipelines, Git, Jenkins, Maven/Gradle.
  • Familiarity with cloud services (AWS, Azure, or GCP).
  • Knowledge of JVM tuning, garbage collection, and performance optimization.
  • Strong understanding of design patterns and system design principles.
  • Excellent communication and problem-solving skills.
Preferred Skills:
  • Experience with Reactive Programming (WebFlux, RxJava).
  • Exposure to DevOps tools and infrastructure automation.
  • Knowledge of big data technologies (Hadoop, Spark).
  • Prior experience in financial, healthcare, or large-scale enterprise applications.

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