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Java Developer Contractor Jobs in California (NOW HIRING)

Calance US

Smartwatch/Mobile Developer

Torrance, CA

$62.96/hr

We will NOT accept 3rd Party (C2C) Contractors ** ===== JOB DETAILS: Position:Smartwatch/Mobile ... Lead development for Android (Kotlin/Java) and iOS (Swift/Objective-C) platforms. Integration ...

Procom Consultants Group

Software Developer

Folsom, CA · On-site

... Contractor Payroll) Flextrack (Vendor Management System) Software Developer On behalf of our client ... Java experience 2+ years' experience in automated test development Demonstrated experience with ...

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How much do java developer contractor jobs pay per hour?

As of May 29, 2026, the average hourly pay for java developer contractor in California is $57.21, according to ZipRecruiter salary data. Most workers in this role earn between $49.38 and $65.34 per hour, depending on experience, location, and employer.

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

To thrive as a Java Developer Contractor, you need strong proficiency in Java programming, object-oriented design, and experience with frameworks like Spring or Hibernate, usually backed by a degree in computer science or related certifications. Familiarity with development tools such as Eclipse or IntelliJ IDEA, version control systems like Git, and build tools such as Maven or Gradle is typically required. Excellent problem-solving abilities, adaptability, and strong communication skills help contractors integrate quickly with client teams and manage project expectations. These skills ensure efficient, high-quality software delivery and successful collaboration in diverse and dynamic project environments.

What are some common challenges faced by Java Developer Contractors, and how can they be managed effectively?

Java Developer Contractors often encounter challenges such as quickly adapting to new codebases, understanding varying business requirements, and integrating with existing teams on short notice. Effective management of these challenges involves strong communication skills, proactive documentation review, and leveraging collaboration tools to stay aligned with both technical and project goals. Building rapport with permanent team members and maintaining flexibility in work approaches can help contractors contribute efficiently and make a positive impact within tight project timelines.

What are Java Developer Contractors?

Java Developer Contractors are professionals who are hired on a temporary or project basis to design, develop, and maintain software applications using the Java programming language. Unlike full-time employees, contractors typically work for a set period or on specific tasks, often through an agency or as independent consultants. They are responsible for writing efficient code, debugging, testing, and sometimes deploying Java-based applications according to client requirements. Companies often hire Java Developer Contractors to meet short-term technical needs, fill skill gaps, or accelerate project timelines.

What is the difference between Java Developer Contractor vs Java Developer Full-Time Employee?

AspectJava Developer ContractorJava Developer Full-Time Employee
CredentialsTypically requires Java certifications, relevant experienceSame as contractor, often with additional company-specific onboarding
Work EnvironmentProject-based, flexible hours, remote or on-sitePermanent, structured hours, on-site or hybrid
Employer & Industry UsageUsed across various industries for short-term projectsEmployed directly by companies, long-term roles
Search & Comparison IntentLooking for freelance or temporary Java rolesSeeking stable, full-time Java positions

The main difference between a Java Developer Contractor and a Java Developer Full-Time Employee lies in employment type, work flexibility, and duration. Contractors work on short-term projects with flexible hours, while full-time employees have permanent roles with structured schedules. Both roles require Java skills and certifications, but their work arrangements and job stability differ.

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Infographic showing various Java Developer Contractor job openings in California as of May 2026, with employment types broken down into 2% Locum Tenens, 73% Full Time, 15% Part Time, and 10% Contract. Highlights an 77% Physical, 4% Hybrid, and 19% Remote job distribution, with an average salary of $119,004 per year, or $57.2 per hour.
WebMethods Integration Developer

WebMethods Integration Developer

Sapsol Technologies Inc

Sacramento, CA

Contractor

Posted 23 days ago

Job description

Requisition Id :  

4342

Title :  

WebMethods Integration Developer (RFTP 326)

Client :  

SMUD

Work Location City:  

Sacramento (Hybrid(

Work State :  

California

Expected Start Date :  

Mar/02/2026

Expected End Date :  

Mar/02/2027

Description :  

SMUD is seeking a leased employee resource to support SMUD's IT organizational portfolio of 2026. The WebMethods Integration Developer will be responsible for developing web service API's and other integrations to support the implementation of various capital projects across SMUD.

Key responsibilities and deliverables include:

API Development

       Design and develop RESTful and/or SOAP web service APIs to connect SMUD's enterprise systems such as GIS, ERP, asset management, project controls, and document management.

       Ensure APIs support data exchange using secure, standardized formats (e.g., JSON, XML).

       Implement robust authentication and authorization protocols, including but not limited to OAuth 2.0, JWT, SAML, or other SMUD-approved alternatives.

       Provide comprehensive API documentation, preferably using OpenAPI Specification (Swagger).

       Ensure all APIs are version-controlled and maintain backward compatibility, with clearly defined extension and deprecation policies.

Integrations & Interoperability

       Analyze existing SMUD platforms to identify optimal integration points for system connectivity.

       Develop connectors or middleware to enable seamless interoperability between legacy systems, cloud solutions, and approved third-party applications.

       Where applicable, design integrations to be event-driven, supporting asynchronous updates and webhook capabilities.

       Implement robust error handling, transactional integrity, comprehensive logging, and proactive monitoring for all integrations.

Security

       Ensure all solutions are fully compliant with SMUD's cybersecurity policies and applicable industry standards such as NIST and CIS Controls.

       Utilize data encryption in transit and at rest, incorporate secure API gateways, and conduct periodic vulnerability assessments.

       Provide audit trails and detailed transaction logging for all API and integration activities.

Scalability & Performance

       Design all components for high availability, horizontal scalability, and resilience to failures.

       Define and implement performance benchmarks for each solution, such as minimum transactions per second (TPS) and pre-determined latency thresholds for mission-critical processes.

Testing & Quality Assurance

       Develop and execute comprehensive test plans, including unit testing, integration testing, system testing, and user acceptance testing (UAT).

       Support automated regression testing to ensure ongoing maintainability and reliability of APIs and integrations.

All work shall be fully documented according to organizational standards, and technical knowledge transfer shall be provided as required. The vendor is expected to collaborate closely with SMUD IT resources, business stakeholders, and project teams to ensure all deliverables support the organization's data and integration goals.

Mandatory Requirements

The proposed WebMethods Integration Developer must meet the following minimum qualifications/mandatory requirements:

       At least 5 years of professional experience developing and implementing solutions on the webMethods integration platform.

       A minimum of 2 years of experience working with the webMethods.IO (or webMethods Cloud Integration - IC) SaaS platform.

       Proven experience developing SAP RFC (Remote Function Call) integrations.

       Demonstrated ability to develop custom integration services using Java

       Ability to develop at a senior level on the webMethods integration platform, including familiarity with related technologies such as:

  Integration Server

  Universal Messaging

  API Gateway

  wM Test Suite


  EDI/TN (Trading Network)

  Java Service Development

  webMethods.IO

Desirable Qualifications

       Advanced or professional certifications related to integration platforms or APIs (e.g., Software AG Certified webMethods Developer, MuleSoft, AWS Certified Developer, Microsoft Azure Integration, PMP, or equivalent)

       Prior experience supporting IT or digital initiatives in the public sector, utilities, or energy industry

       Proficiency with related Software AG technologies: Integration Server, Universal Messaging, API Gateway, wM Test Suite, EDI/TN (Trading Networks), and Java Service Development.

       Demonstrated knowledge of secure software development, identity and access management, and implementation of cybersecurity best practices

Assumptions

       Contractors must have reliable internet, work exclusively within the United States.

       Contractor's work schedule will fall between 7:00am and 5:00pm Pacific Time, with work hours to be agreed with immediate Supervisor.

       The contractor is expected to be onsite for an initial 3-day orientation, and onboarding session at SMUD's Sacramento CA offices. After the 3-day onsite orientation, the contractor will work onsite every Wednesday, work remotely all other workdays.

       The resource working on this task will have strong communication, written and collaboration skills, with the ability to communicate highly technical information to the project team both verbally and in writing.

Pre-Screening Questions:

Please describe your hands-on experience designing, developing, and securing RESTful APIs and integrations on the webMethods platform, including your use of authentication protocols, data formats, and custom Java services and transformations.

(1 page maximum in response)

Please describe your hands-on experience designing, developing, and securing using webMethods (including webMethods.IO) to build scalable, high-availability integrations-specifically including SAP RFC calls, Trading Networks/B2B, and middleware/connectors for interoperability between enterprise systems? Please highlight your approach to error handling, monitoring, and cybersecurity compliance.

(1 page maximum in response)

What is your process for ensuring quality and maintainability in your solutions through testing (WM test suite - unit, integration, UAT), automation (regression tests), and documentation?

(1 page maximum in response)

Competencies :  

Apply