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Back End Developer Jobs in Wisconsin (NOW HIRING)

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 ...

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 ...

WI · On-site

As an engineer, you understand that producing clean, readable, and testable code is always a priority. * Use AI tools (e.g., Copilot, ChatGPT) in your development workflow to enhance code writing ...

WI · On-site

Work closely with back-end developers to integrate APIs and ensure data flows smoothly, as well as with UI/UX designers to implement design concepts that align with the brand * Keep up-to-date on new ...

New

WI · On-site

Vil du bygge backend-løsninger i kjernen i en av Norges fremste fagmiljø for AI-agenter? Hos Avo ... Bidra til kunnskapsdeling og videreutvikling av Avos fagmiljø innen AI-engineering Du blir ikke ...

NET Backend Engineer to support the design, modernization, and ongoing improvement of enterprise systems in a cloud-based environment for a contract position. This role focuses on backend development ...

WI · On-site

Mobile Application Developer (Kotlin Primary) Location: Westlake, Texas / Durham, North Carolina ... Integrate RESTful APIs, third-party SDKs, and backend services. * Develop responsive and intuitive ...

Work closely with backend developers to integrate APIs and services. * Maintain consistent branding and UI patterns across company websites. * Stay current with evolving front-end and UX/UI practices ...

Java Developer

Waukesha, WI · On-site

$51 - $66/hr

This role is for a skilled developer with a strong focus on backend Java technologies, including advanced Java concepts, Spring Boot, and Microservices architecture. The successful candidate will ...

You'll gain hands-on experience working with modern AI platforms, large language models (LLMs), APIs, and low-code/no-code tools while partnering with experienced front-end and back-end developers ...

You'll gain hands-on experience working with modern AI platforms, large language models (LLMs), APIs, and low-code/no-code tools while partnering with experienced front-end and back-end developers ...

Showing results 21-40

Back End Developer information

See Wisconsin salary details

$12

$58

$85

How much do back end developer jobs pay per hour?

As of Sep 13, 2026, the average hourly pay for back end developer in Wisconsin is $58.27, according to ZipRecruiter salary data. Most workers in this role earn between $47.79 and $68.89 per hour, depending on experience, location, and employer.

What is a back end developer?

A Back End Developer is a programmer who specializes in building and maintaining the server-side logic, databases, and application functionality that power websites and web applications. Unlike front end developers, who focus on the visual and interactive elements users see, back end developers work behind the scenes to ensure data is stored, processed, and delivered correctly. They typically use programming languages like Python, Java, Ruby, or PHP, and interact with databases such as MySQL or MongoDB. Their work is crucial for making sure applications run smoothly, securely, and efficiently.

What is a back end developer?

A back end developer is a computer science professional who specializes in functionality that takes place on the server side or backend. As a back end developer, you write code to create software that solves a business need. Your responsibilities are to research the needs of either your employer, or a particular industry, find a problem, and create a software solution. A back end developer differs from a traditional web developer, or front end developer, in that back-end software may not have a user interface or even have exposure to the web.

What are the key skills and qualifications needed to thrive as a back end developer?

To thrive as a Back End Developer, you need strong programming skills in languages like Java, Python, or Node.js, along with a solid understanding of databases and API design, typically supported by a degree in computer science or related experience. Familiarity with frameworks such as Spring or Django, version control systems like Git, and cloud platforms (e.g., AWS or Azure) is often required, with certifications in these areas considered beneficial. Problem-solving, effective communication, and teamwork are crucial soft skills that help developers collaborate and address complex technical challenges. These competencies are vital for building reliable, scalable systems that support front-end applications and ensure robust product performance.

What are some common challenges back end developers face when integrating with front-end teams?

Back End Developers often encounter challenges when aligning data structures and APIs with front-end requirements, especially as user interface needs evolve rapidly during development. Effective communication and regular collaboration with front-end developers are essential to ensure that endpoints, data formats, and error handling are well-coordinated. Additionally, maintaining consistent documentation and using tools like Swagger or Postman can help streamline integration and reduce misunderstandings between teams.

What is the difference between Back End Developer vs Front End Developer?

AspectBack End DeveloperFront End Developer
Primary FocusServer-side logic, databases, APIsUser interface, website layout, client-side scripting
Skills & TechnologiesLanguages like Java, Python, Ruby; databases; server managementHTML, CSS, JavaScript, frameworks like React or Angular
Work EnvironmentBackend systems, server environments, cloud platformsDesign tools, browser testing, UI/UX design
Common CertificationsCertified Web Developer, AWS Certified DeveloperCertified Front End Developer, UI/UX certifications

Back End Developers focus on server-side logic, databases, and APIs, ensuring the website's functionality behind the scenes. Front End Developers work on the visual and interactive aspects users see and interact with. Both roles are essential in web development, often collaborating to create seamless digital experiences.

Is back end developer in demand?

Back end developers are in high demand due to the growth of web applications and digital services. Skills in programming languages like Python, Java, or Node.js, along with knowledge of databases and APIs, are highly sought after by employers across various industries.

What are the most commonly searched types of Back End Developer jobs in Wisconsin?

The most popular types of Back End Developer jobs in Wisconsin are:

What cities in Wisconsin are hiring for Back End Developer jobs?

Cities in Wisconsin with the most Back End Developer job openings:

What are popular job titles related to Back End Developer jobs in WI?

For Back End Developer jobs in WI, the most frequently searched job titles are:

Infographic showing various Back End Developer job openings in Wisconsin as of August 2026, with employment types broken down into 79% Full Time, 17% Part Time, 1% Temporary, and 3% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $121,209 per year, or $58.3 per hour.

Senior Backend Engineer

Milwaukee, WI • On-site

Worldpay, Inc.
Technology, Communication and Media • 10K+ employees

Full-time

Re-posted 26 days ago


Job description

Job Description

We are FIS. Our technology powers the world's economy and our teams bring innovation to life. We champion diversity to deliver the best products and solutions for our colleagues, clients and communities. If you're ready to start learning, growing and making an impact with a career in fintech, we'd like to know: Are you FIS?

NOTE:

  • This position is hybrid (3 days onsite) in our FIS Office locations in Chicago (Illinois), Milwaukee (Wisconsin), Atlanta (Georgia) and Jacksonville (Florida).
  • Current and future sponsorship not available for this position

About the Team:

We are the premiere digital transformation partner for financial institutions committed to the future of banking and to creating safe and personalized customer experiences that help people better manage their financial lives. Our fully integrated and flexible platform is built on years of digital lending experience, enabling digital agility within months and a full suite of end-to-end consumer, small business and embedded finance solutions that fit the way people want to bank.

FIS technology powers the world's economy and our teams bring innovation to life. If you are ready to start learning, growing, and making an impact with a career in fintech, we encourage you to apply. Are you FIS?

A DAY IN THE LIFE:

As a Senior Software Engineer, your day will be filled with exciting challenges and opportunities to shape the future of financial technology. You'll collaborate with a talented team of engineers and play a crucial role in developing cutting-edge solutions that drive innovation in the financial sector. Your responsibilities will include developing and implementing scalable software, troubleshooting complex issues, and contributing to the overall success of our products.

WHAT WE'LL TRUST YOU TO DELIVER:

  • Take the lead in developing and delivering high-quality software solutions. Mentor junior team members and contribute to a culture of continuous learning and improvement.
  • Engage in full-stack development, from backend systems to user interfaces. Work with technologies such as Java, Javascript and Typescript, RESTful API integrations, microservices and event-driven architecture.
  • Collaborate with cross-functional teams, including product managers, UX designers, and QA engineers, to bring innovative features and products to market. Participate in agile development processes to deliver results efficiently.
  • Analyze complex technical problems and propose effective solutions. Be proactive in identifying areas for improvement and optimizing existing systems for performance and reliability.
  • Uphold high standards of code quality, security, and best practices. Conduct code reviews and contribute to the establishment and adherence to coding standards.
  • Stay abreast of industry trends and emerging technologies. Contribute to the company's technological roadmap by introducing innovative ideas and solutions.

WHAT YOU LIKELY BRING TO THE TABLE:

  • A minimum of 5+ years of experience in software engineering, with a focus on SaaS or FinTech, is preferred.
  • A degree in Computer Science, Software Engineering, or a related field is preferred.
  • Strong proficiency in Java, Spring Boot, and Micronaut expertise, with a deep understanding of RESTful APIs and microservices.
  • Hands-on experience with PostgreSQL, Redis, and cloud-native environments (AWS, Kubernetes, Docker).
  • Familiarity with CI/CD pipelines (Jenkins, Git) and modern software engineering practices.
  • Experience with Jira, Confluence, and other similar project management tools is a plus!
  • Demonstrated ability to analyze and solve complex technical problems. A track record of delivering robust and scalable software solutions.
  • Excellent collaboration and communication skills. Ability to work effectively in a team-oriented environment and contribute to a positive and inclusive workplace culture.
  • A passion for innovation and a keen interest in staying ahead of the curve with emerging technologies (like AI-assisteddevelopment tools). Proven ability to contribute to the development of forward-thinking solutions.

Tech Stack:

Java, Springboot, Micronaut, Temporal, ActiveMQ, Postgres, Redis, ReactJs, Kubernetes, AWS, Jenkins, Git

FIS is committed to providing its employees with an exciting career opportunity and competitive compensation. The pay range for this full-time position is $a 99,040.00 - 168,380.00 USD annual and reflects the minimum and maximum target for new hire salaries for this position based on the posted role, level, and location. Within the range, actual individual starting pay is determined by additional factors, including job-related skills, experience, and relevant education or training. Any changes in work location will also impact actual individual starting pay. Please consult with your recruiter about the specific salary range for your preferred location during the hiring process.


FIS is committed to providing its employees with an exciting career opportunity and competitive compensation. The pay range for this full-time position is $99,040.00 - $168,380.00 and reflects the minimum and maximum target for new hire salaries for this position based on the posted role, level, and location. Within the range, actual individual starting pay is determined by additional factors, including job-related skills, experience, and relevant education or training. Any changes in work location will also impact actual individual starting pay. Please consult with your recruiter about the specific salary range for your preferred location during the hiring process.

Privacy Statement

FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.

EEOC Statement

FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here


For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.

Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

#pridepass