Senior Software Engineer C# React

Liberty Personnel Services, Inc.
Philadelphia, PA

Job Details:

Senior Software Engineer

We are looking for an experienced Senior Software Engineer with a broad skill set spanning multiple platforms / systems. This hybrid role requires onsite collaboration at least 2 days per week, offering the flexibility to work remotely for the remainder. You’ll design, develop, and optimize high-quality software solutions while collaborating with cross-functional teams to deliver impactful results.
Key Responsibilities:

  • Design, develop, and maintain scalable applications using C# and ASP.NET Core.
  • Build responsive front-end interfaces with React and React Native for web and mobile platforms.
  • Implement and optimize communication protocols for seamless system integration.
  • Develop and deploy cloud-based solutions using AWS.
  • Write efficient, reliable code in C for embedded systems.
  • Create and enhance applications across mobile and desktop environments.
  • Collaborate with product managers, designers, and engineers to define requirements and deliver robust solutions.
  • Troubleshoot, debug, and optimize code for performance and scalability.
  • Mentor junior developers and contribute to architectural decisions.

Required Skills & Experience:

  • Professional software development experience.
  • Expertise in C#, ASP.NET Core, and modern .NET ecosystems.
  • Strong proficiency in React and React Native for building user interfaces.
  • Hands-on experience with AWS (e.g., EC2, S3, Lambda, RDS).
  • Proficiency in C and development for embedded systems.
  • Demonstrated experience building mobile and desktop applications.
  • In-depth knowledge of communication protocols (e.g., TCP/IP, MQTT, REST, etc.).
  • Familiarity with agile methodologies and version control systems (e.g., Git).
  • Excellent problem-solving skills and attention to detail.
  • Ability to work onsite 2+ days per week in a hybrid environment.

Preferred Qualifications:

  • Experience with CI/CD pipelines and DevOps practices.
  • Knowledge of additional cloud platforms (e.g., Azure, GCP).
  • Background in cross-platform frameworks (e.g., Xamarin, Flutter).
  • Strong communication skills and a collaborative mindset.

What We Offer:

  • Competitive salary and benefits package.
  • Flexible hybrid work model (onsite 2+ days/week).
  • Opportunities for professional growth and skill development.
  • A collaborative, innovative team environment.
  • Great benefits and perks!

To apply, please email [email protected] your resume confidentially.

Note:

This is a direct hire position. No C2C or contracting.

Please add me on LinkedIn!

I look forward to connecting with you!

Boyd Kelly

484 567 2099
[email protected]

#IT

#midsenior

#libertyjobs

#hybrid

Posted 2026-01-08

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