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Full Stack Developer Startup Jobs in Wisconsin (NOW HIRING)

$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 ...

Full Stack Engineer

Milwaukee, WI · On-site

$80K - $90K/yr

Industry/Sector Not Applicable Specialism Managed Services Management Level Associate & Summary The Opportunity As a Full Stack Engineer, you will be at the forefront of developing innovative ...

New

The Role As a Senior Software Engineer, you'll play a pivotal role in developing and enhancing ... This role is full stack (UI & API's) with more front end focus. We're seeking individuals who excel ...

... full stack development (Java and related technologies). * Deep understanding of data structures ... DevOps automation and CI/CD pipelines.

Software Engineer II (Java)

Madison, WI

$52.25 - $71.50/hr

As a full-stack developer, you will work across the stack, contributing to both the front-end and back-end architecture and implementation. You will work closely with front-end developers, product ...

Position Summary Quest CE is seeking a talented Full-Stack Developer with a strong front-end focus to join our Engineering Team as we continue modernizing our core technology platform. In this role ...

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Showing results 1-20

Full Stack Developer Startup information

What is the difference between Full Stack Developer Startup vs Front End Developer?

AspectFull Stack Developer StartupFront End Developer
Required SkillsProficiency in both front-end and back-end technologies, databases, and server managementSpecialized in client-side technologies like HTML, CSS, JavaScript, and frameworks like React or Angular
Work EnvironmentFast-paced startup setting, often wearing multiple hats, involved in full project lifecyclePrimarily focused on designing and implementing user interfaces and user experience
Common UsageUsed in startups needing versatile developers capable of handling entire applicationsUsed in teams focusing on UI/UX and front-end development within startups or larger companies

In summary, a Full Stack Developer Startup has a broader skill set covering both front-end and back-end development, suitable for dynamic startup environments. A Front End Developer specializes in creating engaging user interfaces, often working within larger teams or specific projects. The choice depends on the scope of work and technical expertise required.

What cities in Wisconsin are hiring for Full Stack Developer Startup jobs? Cities in Wisconsin with the most Full Stack Developer Startup job openings:
Infographic showing various Full Stack Developer Startup job openings in Wisconsin as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

$55.25 - $71.25/hr

Contractor

Re-posted 26 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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