Temporary Fidelity Software Engineer Jobs in Wisconsin

Job Title: Software Engineer

Job Description

The Software Engineer will join the applications team and support a mature Windows desktop application that reconstructs complex data into 3D graphics for customers. This role focuses on maintaining and enhancing an existing application that was developed five years ago, including fixing defects, improving performance, and implementing new features to support advanced 3D visualization and analysis workflows.

Responsibilities

• Support and maintain an existing Windows desktop application that reconstructs scientific and engineering data into 3D visualizations.
• Diagnose, troubleshoot, and fix bugs in a complex, multithreaded C# application to ensure stability and reliability.
• Design, develop, and implement new features and enhancements using C#, WPF, .NET, and related tools and frameworks.
• Apply MVVM design patterns to structure and organize application components for maintainability and scalability.
• Work with 3D visualization components to present reconstructed data clearly and accurately for end users.
• Use Microsoft Visual Studio and SQL Server to develop, debug, and optimize application functionality and data access.
• Debug multithreaded code to resolve performance issues, race conditions, and concurrency-related defects.
• Collaborate with other team members in the applications team to understand requirements and translate them into technical solutions.
• Contribute to continuous improvement of the application’s architecture, performance, and user experience based on customer and internal feedback.

Essential Skills

• Bachelor's degree in computer systems, material science, or physics.
• 5+ years of experience with Windows desktop application development.
• 5+ years of experience with C#.
• 5+ years of experience with development tools and frameworks such as Microsoft Visual Studio and .NET.
• 5+ years of experience working with SQL Server.
• 5+ years of experience applying MVVM design patterns in application development.
• 5+ years of experience with 3D visualization in software applications.
• 5+ years of experience debugging multithreaded applications.
• Experience developing Windows desktop applications using WPF.

Work Environment

The software supports advanced instrumentation used in national laboratories and semiconductor-related companies to research, analyze, and improve materials such as metal alloys and to perform quality control. In typical workflows, a sample is placed into the instrumentation, a high-voltage laser pulses the material, and atoms are released. A detector captures the location and type of atoms, and this data is collected, stored, and then processed by the application the team develops to reconstruct detailed 3D visualizations for customers. The environment is highly technical and data-driven, with close interaction between scientific instrumentation outputs and specialized desktop software that runs on Windows using tools such as Microsoft Visual Studio, .NET, WPF, SQL Server, and 3D visualization technologies.

This is a Contract to Hire position based out of Fitchburg, WI.

The pay range for this position is $40.87 - $57.69/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

This is a hybrid position in Fitchburg,WI.

This position is anticipated to close on Jul 23, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.