.NET Developer/Contract to hire/Philadelphia

Kelly Services; Philadelphia (Philadelphia County); On-site; USD 69,000 - 96,000; Full time

Job summary

Motion Recruitment Partners is seeking two Mid-Level .NET Developers for a large-scale modernization initiative in the Philadelphia area. You will contribute to backend services, API design, and cloud migration efforts, with exposure to front-end if assigned.

This six-month contract focuses on C#/.NET development within an Agile team, targeting Spring 2027 milestones. Ideal candidates have 5+ years of experience, strong REST API and SQL skills, and a passion for scalable enterprise applications.

Qualifications

• 5+ years of professional software development experience.
• Strong hands-on experience with C# and .NET development.
• Experience designing, developing, and consuming RESTful APIs.
• Solid SQL and database development experience.
• Experience developing scalable enterprise applications.
• Strong troubleshooting, debugging, and performance optimization skills.
• Ability to work effectively within Agile/Scrum development teams.
• Excellent communication and collaboration skills.
• Experience participating in technical design discussions and solution planning.

Responsibilities

• Design, develop, and maintain backend services and APIs.
• Support enterprise application modernization and cloud migration initiatives.
• Database development, optimization, and performance tuning.
• Collaborate with developers, analysts, architects, and stakeholders.
• Participate in architecture reviews and technical design discussions.
• Troubleshoot production issues and improve reliability.

Skills

C# / .NET

RESTful APIs

SQL

Agile / Scrum

Troubleshooting

Communication

Technical design

Architecture discussions

Tools

Azure

CI/CD

DevOps

Job description

$50 - $70

A leading enterprise organization is undergoing a large-scale digital transformation, migrating from a legacy data center environment to Microsoft Azure while rebuilding its API ecosystem, web applications, and mobile applications from the ground up. The organization is seeking two Mid-Level .NET Developers to join a high-visibility modernization initiative and help drive development efforts through a multi-year transformation program scheduled for major delivery milestones through Spring 2027.

This is an excellent opportunity for developers who enjoy working on large-scale modernization projects, cloud adoption initiatives, and enterprise application development. Successful candidates will contribute to the design and development of next-generation applications while collaborating with cross-functional teams in an Agile environment. One opening will have additional exposure to front-end development using modern JavaScript frameworks, providing a strong opportunity to broaden full-stack development experience.

Contract Duration: 6 Months

Required Skills & Experience

• 5+ years of professional software development experience

• Strong hands-on experience with C# and .NET development

• Experience designing, developing, and consuming RESTful APIs

• Solid SQL and database development experience

• Experience developing scalable enterprise applications

• Strong troubleshooting, debugging, and performance optimization skills

• Ability to work effectively within Agile/Scrum development teams

• Excellent communication and collaboration skills

• Experience participating in technical design discussions and solution planning

Desired Skills & Experience

• Experience with Microsoft Azure or other public cloud platforms

• Experience supporting cloud migration or application modernization initiatives

• Knowledge of Azure services, cloud architecture, and deployment strategies

• Experience with modern JavaScript frameworks such as React, Angular, Vue.js, or similar

• Understanding of application architecture and distributed systems

• Experience building scalable backend services and microservice-based solutions

• Familiarity with CI/CD pipelines, DevOps practices, and automated deployments

• Ability to provide technical guidance and architectural validation during Azure adoption efforts

What You Will Be Doing Tech Breakdown

• 60% C# /.NET Backend Development

• 20% API Design & Integration

• 10% Database Development & Optimization (SQL)

• 10% Azure Cloud Modernization & Architecture Collaboration

For one position, a portion of development efforts will include front-end development using a modern JavaScript framework.

Daily Responsibilities

• 35% Design, develop, and maintain backend services and APIs

• 20% Support enterprise application modernization and cloud migration initiatives

• 15% Database development, optimization, and performance tuning

• 15% Collaborate with developers, analysts, architects, and business stakeholders

• 10% Participate in architecture reviews and technical design discussions

• 5% Troubleshoot production issues and enhance application reliability

Motion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP’s Employment Accommodation policy. Applicants need to make their needs known in advance.