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Mid Level Backend Developer Jobs in Wisconsin (NOW HIRING)

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 ... role, level, and location. Within the range, actual individual starting pay is determined by ...

Job Purpose The Application Developer II will contribute as a mid-level software developer to our ... Backend Development: Strong experience in C#/.NET development, including .NET Core, ASP.NET MVC ...

Sr Software Engineer

Palmyra, WI · On-site

$124K - $163K/yr

Support junior and mid-level developers through technical coaching and peer reviews. * Follow and ... and back-end development. * Experience working with APIs, system integrations, and middleware ...

Sr Software Engineer

Palmyra, WI

$124K - $163K/yr

Support junior and mid-level developers through technical coaching and peer reviews. * Follow and ... and back-end development. * Experience working with APIs, system integrations, and middleware ...

This is a strong opportunity for a high-upside mid-level experienced candidate who wants broader ... Partner with the BI Developer to develop, enhance, and maintain Power BI dashboards, semantic ...

This is a strong opportunity for a high-upside mid-level experienced candidate who wants broader ... Partner with the BI Developer to develop, enhance, and maintain Power BI dashboards, semantic ...

Java Developer

Madison, WI

$51.50 - $66.50/hr

TrafficCast International, Inc., ( a leading company in digital traffic information and service provision in Madison, WI, is seeking mid level Java developer(s) to enhance traffic modeling system ...

Java Developer

Madison, WI · On-site

$51.50 - $66.50/hr

TrafficCast International, Inc., ( a leading company in digital traffic information and service provision in Madison, WI, is seeking mid level Java developer(s) to enhance traffic modeling system ...

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Mid Level Backend Developer information

See Wisconsin salary details

$12

$58

$85

How much do mid level backend developer jobs pay per hour?

As of Jun 29, 2026, the average hourly pay for mid level backend 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 are some typical challenges a Mid Level Backend Developer might face when working on large-scale applications?

As a Mid Level Backend Developer, you may frequently encounter challenges related to maintaining code quality and ensuring scalability as applications grow. Managing database performance, optimizing API responses, and integrating with legacy systems are common tasks that require both technical skill and problem-solving ability. Collaboration with frontend developers, DevOps engineers, and QA testers is essential to ensure smooth deployments and consistent user experiences. Staying up-to-date with new frameworks and technologies, while balancing project deadlines, is also a key part of the role.

What are Mid Level Backend Developers?

Mid Level Backend Developers are software engineers who specialize in developing and maintaining the server-side logic, databases, and APIs that power web and mobile applications. They usually have a few years of professional experience and are proficient in programming languages like Java, Python, Node.js, or Ruby. These developers are responsible for ensuring that data flows efficiently between the server and users, optimizing performance, and collaborating with front-end developers and other team members. Their role often includes troubleshooting server issues, writing automated tests, and implementing security best practices.

What is the difference between Mid Level Backend Developer vs Junior Backend Developer?

AspectMid Level Backend DeveloperJunior Backend Developer
Experience2-4 years0-2 years
SkillsProficient in backend frameworks, databases, API developmentBasic understanding of backend concepts, learning frameworks
ResponsibilitiesDeveloping features, troubleshooting, code reviewsAssisting in tasks, learning codebase, bug fixing
Work EnvironmentCollaborates with teams, independent problem-solving

The main difference between a Mid Level Backend Developer and a Junior Backend Developer lies in experience and skill level. Mid level developers have more hands-on experience, handle complex tasks independently, and contribute significantly to project development. Junior developers are still learning, focusing on foundational tasks and gaining industry knowledge. This distinction helps employers identify the right candidate for different stages of project involvement.

What are the key skills and qualifications needed to thrive as a Mid Level Backend Developer, and why are they important?

To thrive as a Mid Level Backend Developer, you need strong programming skills in languages like Java, Python, or Node.js, a solid understanding of server-side logic, and experience with relational and non-relational databases. Familiarity with frameworks (such as Spring or Express), RESTful API development, version control systems (like Git), and containerization tools (like Docker) is typically required. Effective problem-solving, collaboration, and clear communication are standout soft skills for this role. These abilities are crucial for building reliable, scalable backend systems and working efficiently within development teams.
What are the most commonly searched types of Backend Developer jobs in Wisconsin? The most popular types of Backend Developer jobs in Wisconsin are:
What cities in Wisconsin are hiring for Mid Level Backend Developer jobs? Cities in Wisconsin with the most Mid Level Backend Developer job openings:
Senior Backend Engineer

Senior Backend Engineer

Worldpay, Inc.

Milwaukee, WI • On-site

$97K - $195K/yr

Full-time

Posted 10 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 $97,935.00 - $195,660.00 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.

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