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Freelance Backend Web Developer Jobs in Wisconsin

ITProposal

SPFX - Java Developer JP054952

Belgium, WI

$47.50 - $62/hr

SharePoint SPFx / Java Developer As a SharePoint SPFx / Java Developer, I design, develop, and ... Develop backend services using Java (Java 21+) and Spring Boot to support modern web and SharePoint ...

LRS

Software Developer - .NET

Milwaukee, WI

$60 - $80/hr

NET Backend Engineer to support the design, modernization, and ongoing improvement of enterprise ... backend systems Strong experience with .NET technologies and building or consuming web services ...

Resource Point LLC

Java Developer

Madison, WI · On-site

$51.50 - $66.50/hr

... * 5+ years in web applications development, web services, REST API and etc,. * 3+ years in ... Develop and maintain Java-based backend applications, ensuring high performance and scalability.

Technoviz LLC

Java Developer III

Madison, WI · On-site

$55/hr

Key Responsibilities: · Develop and maintain Java-based backend applications, ensuring high ... web applications development, web services, REST api and etc - 3+ years in Messaging Queues and ...

ETC

IT Developer - Mobile Apps

Middleton, WI · On-site

... back-end data sources, cloud, and RESTful web service APIs • Work with product and design teams ... Bootstrap, Material Design, etc. • SQL database design and programming • Source code control ...

SV Tech Systems Inc

Java Developer

Madison, WI

$51.50 - $66.50/hr

The Java Developer will design, develop, and implement web-based Java applications to support ... back-end systems and all points in between Drives through ambiguity, self-motivated and thrives ...

Snap-on Inc

Support Engineer

Kenosha, WI · On-site

We are looking for an Entry-Level Support Engineer with 2-3 years of experience to support and ... Troubleshoot and resolve issues across web applications, APIs, and backend services * Analyze ...

Snap-on Inc

Support Engineer

Kenosha, WI · On-site

Overview We are looking for an Entry-Level Support Engineer with 2-3 years of experience to support ... Troubleshoot and resolve issues across web applications, APIs, and backend services * Analyze ...

Snap-on Inc

Support Engineer

Kenosha, WI · On-site

Overview We are looking for an Entry-Level Support Engineer with 2-3 years of experience to support ... Troubleshoot and resolve issues across web applications, APIs, and backend services * Analyze ...

Collabera

Matlab Developer

Waukesha, WI

... back-end services and databases Gather and refine specifications and requirements based on ... web technologies and techniques. Additional Information If you are interested and want to apply ...

Qualysoft

Enge Zusammenarbeit mit Backend-Teams und Stakeholdern Qualitat & Standards * Implementierung und ... Kenntnisse in der Entwicklung barrierefreier Software * Erfahrung mit Responsive Web Design (RWD ...

Husch Blackwell Llp

Senior Software Engineer

Milwaukee, WI · On-site +1

$120K - $158K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application ... Proficiency across the full web stack, with particular depth in back-end services, data APIs, and ...

Husch Blackwell Llp

Senior Software Engineer

Madison, WI · On-site +1

$123K - $162K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application ... Proficiency across the full web stack, with particular depth in back-end services, data APIs, and ...

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Freelance Backend Web Developer information

What is a freelance backend web developer?

A Freelance Backend Web Developer is a self-employed professional who specializes in building and maintaining the server-side logic, databases, and APIs that power web applications. Unlike front-end developers who focus on the visual and interactive aspects of a website, backend developers work behind the scenes to ensure websites and applications function correctly and efficiently. Freelance backend developers typically work on a project basis for various clients, managing their own schedules and business operations. They often use programming languages like Python, Java, Ruby, PHP, or Node.js, and are responsible for tasks such as database management, server configuration, and integrating third-party services.

What are some common challenges freelance backend web developers face when working with multiple clients simultaneously?

Freelance backend web developers often juggle projects for several clients at once, which can present challenges in managing deadlines, aligning with different technical stacks, and maintaining clear communication. Each client may use unique frameworks or have distinct workflow expectations, requiring adaptability and strong organizational skills. Effective time management and clear documentation help ensure smooth collaboration and prevent misunderstandings throughout the development process.

What are the key skills and qualifications needed to thrive as a freelance backend web developer?

To thrive as a Freelance Backend Web Developer, you need strong proficiency in server-side programming languages (such as Python, Node.js, or PHP), database management, and a solid understanding of web architecture, often supported by a relevant degree or proven project experience. Familiarity with frameworks (like Django, Express, or Laravel), version control systems (such as Git), and cloud platforms (AWS, Azure) is typically required. Excellent problem-solving, time management, and client communication skills set successful freelancers apart in this competitive field. These skills ensure you can deliver robust, scalable solutions, meet client expectations, and efficiently manage independent projects.
What are the most commonly searched types of Backend Web Developer jobs in Wisconsin? The most popular types of Backend Web Developer jobs in Wisconsin are:
Freelance Backend Web Developer jobs near you

SPFX - Java Developer JP054952

ITProposal

Belgium, WI

$47.50 - $62/hr

Full-time

Posted 9 days ago

Job description

SharePoint SPFx / Java Developer

As a SharePoint SPFx / Java Developer, I design, develop, and implement enterprise-grade SharePoint Online solutions and modern web applications. I specialize in building scalable SharePoint Framework (SPFx) components, integrating Microsoft 365 services, and developing robust Java backend services that support secure, high-performance business applications.

Key Responsibilities
  • Design, develop, and maintain SharePoint Online solutions using the SharePoint Framework (SPFx).
  • Develop custom SPFx web parts, extensions, library components, and Adaptive Card Extensions (ACE) to enhance the Microsoft 365 user experience.
  • Configure and optimize SharePoint sites, document libraries, lists, permissions, content types, and search capabilities.
  • Implement enterprise document management solutions within SharePoint Online.
  • Integrate SharePoint solutions with Microsoft 365 services, REST APIs, Azure services, and external enterprise systems.
  • Develop backend services using Java (Java 21+) and Spring Boot to support modern web and SharePoint applications.
  • Build secure RESTful APIs and business services following enterprise architecture and security best practices.
  • Implement authentication and authorization using Microsoft Authentication Library (MSAL) and Microsoft Entra ID (Azure AD).
  • Develop modern frontend applications using TypeScript, JavaScript, React, and Fluent UI (Office UI Fabric).
  • Manage application dependencies using Node.js and npm while maintaining efficient development workflows.
  • Utilize Git for source control, branching strategies, version management, and collaborative development.
  • Support CI/CD processes, SPFx deployment pipelines, and Application Lifecycle Management (ALM).
  • Containerize applications using Docker to support development, testing, and deployment environments.
  • Produce technical documentation, architecture designs, and implementation guides.
  • Troubleshoot production issues, optimize application performance, and ensure compliance with governance and security standards.
  • Collaborate with business analysts, architects, developers, and stakeholders in Agile development environments to deliver high-quality enterprise solutions.
Core Competencies
  • SharePoint Online Development
  • SharePoint Framework (SPFx)
  • SharePoint REST API
  • SharePoint Site Architecture
  • Document Management Solutions
  • Adaptive Card Extensions (ACE)
  • Microsoft 365 Integration
  • Java 21+
  • Spring Boot
  • REST API Development
  • TypeScript
  • JavaScript (ES6+)
  • React
  • Fluent UI / Office UI Fabric
  • Node.js & npm
  • Microsoft Authentication Library (MSAL)
  • Azure Services
  • Docker
  • Git Version Control
  • Visual Studio Code
  • CI/CD & ALM
  • Enterprise Application Development
  • Security & Governance
  • Agile/Scrum Development