.net/C# Developer - Senior

  •  Reference Number: 411925
  •  Posted: 09/17/2026
  •  Job Type: Contract

Our client, a leading organization in the financial services industry, is seeking a .net/C# Developer - Senior to join their team. As a .net/C# Developer - Senior, you will be part of the Online Security Technologies department supporting the development and maintenance of critical authentication platforms. The ideal candidate will demonstrate strong problem-solving skills, adaptability, and a collaborative mindset, which will align successfully in the organization.

Job Title:.net/C# Developer - Senior

Location:Austin, TX

Pay Range:$70

What's the Job?

  • Lead the development and delivery of organizational software products through QA, UAT, and Production phases.
  • Collaborate with product owners and key stakeholders across Project Management, Business, QA, and Technology Operations to ensure projects are delivered on schedule and within budget.
  • Partner with the Scrum Master and product owner to provide accurate development sizing and cost analysis estimates.
  • Utilize automated testing tools and frameworks, including test-driven development, to uphold software quality standards.
  • Support Identity and credential management systems for Authentication between internal and external systems.

What's Needed?

  • Demonstrated expertise in developing server-side applications (API Subject Matter Expert) utilizing C# and .NET technologies.
  • Experience in developing UI utilizing Angular or React.
  • Extensive experience designing and implementing solutions for applications requiring high availability, throughput, and scalability.
  • Strong knowledge of contemporary system architecture as well as development standards and guidelines.
  • Background in AI development and Specification-Driven Development.

What's in it for me?

  • Opportunity to work on mission-critical security platforms in a dynamic environment.
  • Engagement with innovative technologies and practices in a collaborative team setting.
  • Chance to develop leadership skills by mentoring junior team members.
  • Work in a hybrid model with a focus on flexible collaboration.
  • Be part of a forward-thinking organization committed to technological excellence.

Upon completion of waiting period consultants are eligible for:

  • Medical and Prescription Drug Plans
  • Dental Plan
  • Vision Plan
  • Health Savings Account
  • Health Flexible Spending Account
  • Dependent Care Flexible Spending Account
  • Supplemental Life Insurance
  • Short Term and Long Term Disability Insurance
  • Business Travel Insurance
  • 401(k), Plus Match
  • Weekly Pay

If this is a role that interests you and you'd like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you!

About ManpowerGroup, Parent Company of: Manpower, Experis and Talent Solutions.

Experis® is a global leader in technology services and part of the ManpowerGroup® (NYSE: MAN) family of brands. We connect skilled technology professionals with meaningful opportunities where they can grow their careers, expand their expertise and make a real impact. Guided by the belief that it takes Human Ingenuity to unlock the true potential of technology, Experis helps people gain experience with leading organizations, build sought-after skills and take the next step toward a brighter future. Backed by ManpowerGroup's 75+ years of workforce expertise and global reach across more than 70 countries and territories, Experis brings the scale, insight and opportunity to help people and businesses thrive. ManpowerGroup is consistently recognized for its commitment to inclusion, ethics and responsible business, including being named one of the World's Most Ethical Companies. Learn more at Experis.com.

Austin, TX

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