Backend Engineers
Location: Madison, Wisconsin
Country: United States
Category: Software Development
Workplace Location: Onsite
Employment Type: Contract
Posted Date: January 21, 2026
Job ID: 642175
Job Description
Pay Rate: $50-$55/H
Length: 18 months +
Location: Milwaukee, WI
Hybrid: Two days onsite. 3 days remote.
Backend Software Engineer
Join our dynamic hybrid team as a Backend Software Engineer and play a key role in developing and integrating our core applications. You will be responsible for building robust C#/.NET APIs that interface with our core banking systems and other enterprise applications.
Day-to-Day Responsibilities-
Develop, enhance, and maintain robust C#/.NET APIs that support critical backend and back office applications.
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Integrate APIs with SQL Server and various other enterprise systems to ensure seamless data flow.
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Participate actively in code reviews, comprehensive testing, and performance tuning initiatives.
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Collaborate closely with development and business teams to gather requirements and refine application functionality.
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Support ongoing application health through troubleshooting, debugging, and continuous improvements.
We are seeking a candidate with a strong foundational skill set, listed here in order of priority:
- MUST CURRENTLY LIVE IN A COMMUTABLE DISTANCE TO MADISON, WI OR MILWAUKEE, WI
- Strong understanding of API integration patterns and back-end architecture. Must possess the ability to effectively design and build the API layer to integrate various applications.
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Experience working with Core Banking Systems.
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Proven hands-on experience developing C#/.NET APIs.
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4 years of relevant professional experience (Minimum).
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Entity Framework Core Experience.
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Proficiency in SQL Server, including writing and optimizing complex queries.
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Exposure to supporting dynamic internal or enterprise applications.
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Knowledge of secure API design and authentication best practices.
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Experience working in the Cloud (specifically Azure).
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Experience working with microservices and databases.
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Experience working in hybrid work settings with cross-functional teams.
#MILWAUKEE
#MADISON
#TECH
#HYBRID
#LI-MG1
EEO Statement
The staffing industry has seen an increase in people falsely representing themselves as recruiters to gather personal information from job seekers. For your safety, do not provide sensitive data to anyone you have not spoken with thoroughly, never provide banking information during the application process, and always double check the email address of the Recruiter to ensure it’s from an official Planet domain (@theplanetgroup.com or @launchcg.com) - and not a domain with an alternative extension like .net, .org, or .jobs.
The Planet Group and our companies are equal opportunity employers. It is our practice not to discriminate against any employee or applicant based on any criteria, condition or basis protected by laws or regulations in the locations where we do business. All qualified applicants are encouraged to apply. We celebrate diversity and are committed to providing an environment of mutual respect. We believe that diversity, equity, and inclusion enable us to better meet our mission and values while serving our clients across the globe. If you have a disability or handicap and would like us to accommodate you in any reasonable way, please inform your recruiter, or contact us, so that we can discuss the appropriate alternatives available.
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About The Planet Group
The Planet Group is a global professional services firm delivering strategic staffing and advisory solutions. We operate at the intersection of talent and transformation – connecting the right people with the right opportunities in the areas of technology, engineering, accounting & finance, digital marketing, and manufacturing.
As one of the largest staffing companies in the US, we operate with a global reach and a performance-first mindset. We partner with clients to move fast, stay agile, and drive measurable results – building high-impact teams that fuel transformation and growth.
