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Contract Remote Full Stack Java Developer Jobs in Wisconsin

Qualysoft

$55.25 - $71.25/hr

Vienna (1-2 days on-site per week during onboarding, then 2-4 day per month; otherwise fully remote ... English (must-have) + German (nice to have) We are seeking an experienced Java Full Stack Developer ...

Deloitte

Java Developer Specialist

Milwaukee, WI · On-site +1

$50.25 - $65/hr

Understanding of web technologies for full-stack roles * Experience with build tools and version ... Role is remote Preferred * Strong desktop skills including Word, Excel, PowerPoint * Work ...

Genesis10

Senior Full Stack Engineer - Remote

Appleton, WI · Remote

$88 - $89/hr

This is a 6+ month contract opportunity. Candidates must be able to work Central Standard Time (CST ... Solid backend skills (30-40%) with Java, Spring Boot, and API integration * Expertise with CI/CD ...

RIT Solutions, Inc.

Java Developer

Madison, WI · Remote

$51.50 - $66.50/hr

Java Developer remote 12 month contract but need to be 8+ years experience (negotiable with years here). Java/Spring API Developer Senior Developer specializing in API development using Java and ...

Eliassen Group

Full Stack Engineer

Madison, WI · Remote

Contract Category: Development Industry: Technology Workplace Type: Remote Reference ID: JN -042026 ... Strong understanding of modern DevOps practices including CI/CD with Docker, GitHub workflows, and ...

DataAnnotation

$40/hr

A technology company is looking for a Full Stack Engineer to join their team and train AI models ... This is a remote independent contract position, with payment starting at $40+ USD per hour ...

DataAnnotation

$40/hr

Benefits This is a full-time or part-time REMOTE position You'll be able to choose which projects ... This is an independent contract position. #J-18808-Ljbffr

RIT Solutions, Inc.

Java Developer

Milwaukee, WI · On-site +1

$50.25 - $65/hr

JAVA OPENING - Remote Remote - WI Resident Exempt The manager has requested a bid limit of 1 per ... full lifecycle testing, microservice architecture patterns, and Agile Scrum project management ...

DataAnnotation

$40/hr

A tech company specialized in AI is seeking a Full Stack Developer to train AI models and assess ... This independent contract role offers flexibility and payment based on projects, starting at $40 ...

DataAnnotation

$60/hr

A cutting-edge AI development firm is seeking proficient programmers to contribute to developing innovative AI systems. This fully remote position offers a flexible schedule, allowing you to choose ...

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Infographic showing various Contract Remote Full Stack Java Developer job openings in Wisconsin as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% Remote job distribution.

Java Full Stack Developer

Qualysoft

On-site, Remote

$55.25 - $71.25/hr

Contractor

Posted 28 days ago

Job description


Location: Vienna (1-2 days on-site per week during onboarding, then 2-4 day per month; otherwise fully remote) Start: ASAP | Duration: 12 months (extension possible) | Workload: 100% Language: English (must-have) + German (nice to have)

We are seeking an experienced Java Full Stack Developer with a strong focus on backend development to join our agile team.
Your role will involve designing and developing APIs, implementing microservice-based architectures, integrating with databases, and contributing to frontend development using JavaScript/TypeScript with React or Angular. You will collaborate closely with cross-functional teams in an agile environment. Experience in the telecommunications sector is a strong plus.
350 - 400 a day
Key Responsibilities

Design, develop, and maintain backend services using Java, Spring, and Spring Boot
Implement and integrate REST APIs for internal and external systems
Conduct unit testing using JUnit to ensure code quality
Manage builds and dependencies with Maven
Work with PostgreSQL, ideally including JSONB
Design and develop scalable, maintainable microservice architectures
Collaborate closely with product owners, architects, developers, and DevOps teams
Contribute to the continuous improvement of development processes and tools
Ensure solutions meet performance, stability, and security standards
Contribute to the frontend using JavaScript/TypeScript and React or Angular
Work with technologies from the Apache ecosystem where applicable (e.g. for services, integration, or tooling)

Required Skills & Experience
Proven professional experience in backend development with Java (Java 21 preferred)
Strong knowledge of Spring and Spring Boot
Experience with REST API development and integration
Proficiency in JUnit for unit testing
Experience in Maven build management
Solid knowledge of PostgreSQL (JSONB is a plus)
Strong background in microservice architecture design and implementation
Experience with frontend development using JavaScript/TypeScript and React or Angular
Familiarity with Apache-based technologies in a typical Java backend stack
Agile mindset and experience working in Scrum/Kanban teams
Excellent command of English (spoken & written)

Nice to Have
Kubernetes & Helm for deployment and orchestration
SOAP service integration experience
Experience with Graylog for logging and monitoring
Telecommunications industry knowledge (big plus)
Knowledge of Kafka , Apache
Why Join Us?
Work on impactful, enterprise-grade solutions
Agile, collaborative work environment with international teams
Opportunity to influence architecture and technology decisions
Engagement in a technically demanding, modern Java backend / Fullstack environment
Interested?
Please send your updated CV including availability and hourly rate expectations. We look forward to hearing from you!
Please contact me by email at elena.kahraman@qualysoft.com, or via LinkedIn. Thank you for your understanding! +43 699 14402417
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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