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The Planet Group

Backend Engineers

Hybrid

Milwaukee, United states

$ 55 /hour

Junior

Freelance

09-12-2025

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Skills

SQL Architecture Databases SQL Server Azure Microservices

Job Specifications

Pay Rate: $50-$55/H

Length: 18 months +

Location: Milwaukee, WI / Madison (Ideally 1 day in each location)

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.
Integrate APIs with SQL Server and various other enterprise systems to ensure seamless data flow.
Participate actively in code reviews, comprehensive testing, and performance tuning initiatives.
Collaborate closely with development and business teams to gather requirements and refine application functionality.
Support ongoing application health through troubleshooting, debugging, and continuous improvements.

Required Skills and Qualifications

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.
Experience working with Core Banking Systems.
Proven hands-on experience developing C#/.NET APIs.
4 years of relevant professional experience (Minimum).
Entity Framework Core Experience.
Proficiency in SQL Server, including writing and optimizing complex queries.
Exposure to supporting dynamic internal or enterprise applications.

Preferred Skills & Qualifications

Knowledge of secure API design and authentication best practices.
Experience working in the Cloud (specifically Azure).
Experience working with microservices and databases.
Experience working in hybrid work settings with cross-functional teams.
#MILWAUKEE
#MADISON
#TECH
#HYBRID

About the Company

The Planet Group is a diversified professional services organization focused on providing high-value outsourced human capital solutions and niche consulting services to Fortune 500 and other leading clients in the fastest growing and most in-demand sectors. The Planet Group consists of staffing and consulting entities that have been purposefully built to address the professional services needs of leading companies in the technology, energy & engineering, accounting & finance, HR, administrative, and digital marketing industr... Know more