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Backend Full Stack Engineer Jobs in Wisconsin (NOW HIRING)

Qualysoft

$55.25 - $71.25/hr

We are seeking an experienced Java Full Stack Developer with a strong focus on backend development to join our agile team. You will be responsible for building and maintaining enterprise-grade ...

Stryker Corporation

WI · On-site

$93 - $185/hr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

The ideal candidate will have extensive experience in backend & frontend development, system design ... full-stack applications and microservices using modern software engineering best practices. * Build ...

New

TIER4 GROUP

Full Stack Developer

Milwaukee, WI · Hybrid

Full Stack Developer with Python Focus Location: Franklin, WI Type: Hybrid (3 days onsite per week) Open to Chicago area with more Hybrid Duration: ASAP - December 2025 Perks: Competitive Rates ...

Soteria Reinsurance Ltd.

WI · On-site

$140 - $180/hr

## Principal Full Stack Engineer (MarTech, CDP, Data and Integrations)Applylocations: Westlake, TXtime type: Full timeposted on: Posted Todayjob requisition id: 2130452## ## **Note: Fidelity will not ...

Simple Solutions

WI · On-site

$130 - $140/hr

Senior Software Engineer(Full Stack) .Net & C# - Hybrid 3 days Contract to Hire | Simple Solutions | United States Posted On 07/23/2026 Job Information Job Opening ID ZR_2977_JOB Work Experience 10+ ...

Socket.dev

WI · On-site

$209 - $262.40/hr

Senior Lead Software Engineer, Full Stack (Global Payment Network) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast‑paced ...

Topgolf Payroll Services

WI · On-site

$170 - $210/hr

  • Medical

  • Dental

  • Vision

  • Retirement

... full stack, from client architecture through backend APIs and platform services that the mobile app ... an engineer through a design decision, reviewing a pull request, and representing the mobile ...

FIS

Senior Backend Engineer

Milwaukee, WI · On-site

$97K - $195K/yr

As a Senior Software Engineer, your day will be filled with exciting challenges and opportunities ... Engage in full-stack development, from backend systems to user interfaces. Work with technologies ...

Worldpay, Inc.

Senior Backend Engineer

Milwaukee, WI · On-site

$97K - $195K/yr

As a Senior Software Engineer, your day will be filled with exciting challenges and opportunities ... Engage in full-stack development, from backend systems to user interfaces. Work with technologies ...

Recovery.com

Senior Staff Engineer

Madison, WI

$105K - $144K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Design, build, test, and ship production-ready full-stack features across React/Next.js, Node.js, ... and backend technologies are welcomed * Proven experience designing and owning technical ...

Recovery.com

Senior Staff Engineer

Madison, WI · On-site

$105K - $144K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Design, build, test, and ship production-ready full-stack features across React/Next.js, Node.js, ... and backend technologies are welcomed * Proven experience designing and owning technical ...

Denari

Software Engineer

Madison, WI · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Full-Stack Engineer (Denari) Location: Madison, WI (Hybrid) Employment Type: Full-time About Denari ... Mastery of TypeScript , with strong skill in React/Next.js and backend services using Node.js

Worldpay, Inc.

Senior Backend Engineer

Milwaukee, WI · Hybrid

... within months and a full suite of end-to-end consumer, small business and embedded finance ... the back-end stack with setting the technical direction of the team. What You Will Be Doing ...

FIS

Senior Backend Engineer

Milwaukee, WI · Hybrid

... within months and a full suite of end-to-end consumer, small business and embedded finance ... the back-end stack with setting the technical direction of the team. What You Will Be Doing ...

Alliance Engineering Groupe Fortil

WI · On-site

$110 - $140/hr

Purpose of the role Develop, program, test and maintain assigned software applications, delivering robust IT solutions that meet business needs. Key responsibilities * Analyze user needs and assess ...

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Backend Full Stack Engineer information

What is a backend full stack engineer?

A Backend Full Stack Engineer is a software developer who specializes in building and maintaining the server-side logic, databases, and APIs of an application, while also having proficiency in front-end technologies. They are capable of working on both the backend and frontend parts of web applications, allowing them to develop end-to-end features and ensure seamless integration between the client and server sides. This role requires strong knowledge of programming languages such as JavaScript (Node.js), Python, or Java, as well as familiarity with databases, server architectures, and various web frameworks. Backend Full Stack Engineers often collaborate with designers, frontend developers, and other stakeholders to deliver complete and functional products.

How does a backend full stack engineer typically collaborate with frontend developers and other team members?

Backend Full Stack Engineers frequently work alongside frontend developers, product managers, and QA engineers to deliver seamless user experiences. They are responsible for building and maintaining server-side logic and APIs, ensuring data flows efficiently between the backend and frontend. Effective communication is essential, as they must align backend functionality with frontend requirements and participate in code reviews, sprint planning, and troubleshooting sessions. This collaborative environment fosters learning and often provides opportunities to contribute across the tech stack, enhancing both technical and interpersonal skills.

What are the key skills and qualifications needed to thrive as a backend full stack engineer?

To thrive as a Backend Full Stack Engineer, you need strong proficiency in server-side languages (such as Node.js, Python, or Java), database management, and a solid understanding of front-end technologies, usually supported by a degree in computer science or related experience. Familiarity with frameworks (like Express, Django, or Spring), version control systems (like Git), and cloud platforms (such as AWS or Azure) is typically required. Effective problem-solving, communication, and teamwork skills help you collaborate across disciplines and deliver robust solutions. These skills ensure scalable, maintainable applications and seamless integration between backend and frontend systems, which are critical for organizational success.

What is the difference between Backend Full Stack Engineer vs Frontend Developer?

AspectBackend Full Stack EngineerFrontend Developer
Primary FocusDeveloping server-side logic, databases, and APIsDesigning and implementing user interface and client-side features
Required SkillsProgramming languages like Python, Java, Node.js; databases; server managementHTML, CSS, JavaScript; frameworks like React or Angular
Work EnvironmentOften involved in both front-end and back-end tasks, collaborating across teamsPrimarily focused on client-side development, UI/UX design

While both roles require strong programming skills, Backend Full Stack Engineers handle both server-side and client-side development, whereas Frontend Developers focus mainly on creating engaging user interfaces. Understanding these differences helps employers and job seekers target the right skills and responsibilities for each role.

What are popular job titles related to Backend Full Stack Engineer jobs in Wisconsin?

For Backend Full Stack Engineer jobs in Wisconsin, the most frequently searched job titles are:

What job categories do people searching Backend Full Stack Engineer jobs in Wisconsin look for?

The top searched job categories for Backend Full Stack Engineer jobs in Wisconsin are:

Backend Full Stack Engineer jobs near you

Java Full Stack Developer (f/m/d)

Qualysoft

$55.25 - $71.25/hr

Contractor

Re-posted 4 days ago

Job description

We are seeking an experienced Java Full Stack Developer with a strong focus on backend development to join our agile team. You will be responsible for building and maintaining enterprise-grade services and automating business processes using BPMN (ideally with Camunda BPM). Your role will involve designing and developing APIs, implementing microservice-based architectures, and integrating with databases, all while collaborating closely with cross-functional teams in an agile environment. Experience in the telecommunications sector is highly desirable and will be considered a strong plus.
380 - 400 a day
Key Responsibilities

Design, develop, and maintain backend services using Java 21, Spring, and Spring Boot 3
Implement and integrate REST APIs for internal and external systems
Apply BPMN knowledge (Camunda BPM preferred) for long-running processes
Conduct unit testing using JUnit to ensure code quality
Manage builds and dependencies with Maven
Work with PostgreSQL, ideally with 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

Required Skills & Experience

Proven professional experience in backend development with Java (Java 21 preferred)
Strong knowledge of Spring and Spring Boot 3
Solid understanding of BPMN (Camunda BPM is a strong advantage)
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
Agile mindset and experience working in Scrum/Kanban teams
Excellent command of English (spoken & written)
Interested?

Please send your updated CV including availability and hourly rate expectations. We look forward to hearing from you!

Please contact me via Freelancermap 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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