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Contract Remote Full Stack Java Developer Jobs in Wisconsin

Qualysoft

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 ...

WPS

Senior Java Developer

Madison, WI · On-site +1

$100K - $130K/yr

Work Location We are open to remote work in the following approved states: Colorado, Florida ... As such, the role is subject to all applicable federal regulations, CMS contract requirements, and ...

Qualysoft

$60.25 - $76.75/hr

Fur ein langfristiges Projekt in Wien suchen wir ab sofort einen erfahrenen Java Developer ... Hybrid (ca.30 % Remote-Anteil) * Projektsprache: Deutsch Ihre Aufgaben * Mitarbeit im gesamten ...

TEKsystems

AI Platform Engineer (Part-time)

Milwaukee, WI · On-site +1

$70 - $85/hr

Remote candidates are welcomed to apply! Job Type & Location This is a Contract position based out ... As an industry leader in Full-Stack Technology Services, Talent Services, and real-world ...

Genus PLC

Software Engineering Manager

Windsor, WI · On-site +1

$135K - $160K/yr

... a full-stack, AI-infused product portfolio. The successful candidate is a forward-thinking ... GitHub Actions, GitLab CI, Azure DevOps, Jenkins * Infrastructure as Code and cloud platforms (AWS ...

VIVA USA INC

Programmer Analyst

Madison, WI · On-site +1

This position would primarily work within the Collibra platform utilizing Java and configuring APIs ... Python Notes: 90-100% remote but can require staff to come onsite as necessary with sufficient ...

SysLogic, Inc.

Security Engineer (AppSec)

Milwaukee, WI · On-site +1

$57.75 - $77.25/hr

A minimum of two years working as a Full Lifecycle Developer creating enterprise-based applications ... Java, C++, Python). * Familiarity with security frameworks and standards (e.g. OWASP, NIST)

TEKsystems

Amazon Campaign Manager

Seymour, WI · Remote

$35 - $40/hr

Job Type & Location This is a Contract position based out of Seymour, WI. Pay and Benefits The pay ... As an industry leader in Full-Stack Technology Services, Talent Services, and real-world ...

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Java Full Stack Developer

Qualysoft

On-site, Remote

Contractor

Posted 5 hours 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 and identifying potential inconsistencies or verification signals in application materials based on available information. 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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