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Senior C# Developer

Job in Westchester, Cook County, Illinois, 60154, USA
Listing for: Halo Group
Full Time, Seasonal/Temporary position
Listed on 2026-02-24
Job specializations:
  • Software Development
    Software Engineer, C# / Unity Developer, Web Developer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: #4505 - Senior C# Developer - DIRECT HIRE
  • Full-time
Job Description

Key drivers-WEB API, WCF and C#: MVC is a plus BIz Talk is a plus.

  • 7 Years of application development experience using C#, ASP.NET, MVC, Web API, SQL Server
  • Experience in Parallel Task & Multi-threaded programming, Asynchronous Methods, Delegates
  • Experience in front end technologies such as JavaScript, jQuery, JSON, HTML5
  • Solid understanding of Object Oriented Programming, Interfaces
  • Solid understanding of Design Patterns Dependency Injection, Domain Driven Design
  • Solid understanding of MVVM, Knockout JS mandatory
  • Knowledge of real-time communication using Signal

    R & Websocket a plus
  • Experience working in Agile Development Methodologies
  • Timely Support of Production Systems
Qualifications
  • Candidate must have a Bachelor degree with 7 years of application development experience.
  • Excellent oral and written communications skills, including the ability to communicate effectively within the project team and other application teams are required.
  • Organization, time management skills and attention to detail are critical. Must continue to enhance technical knowledge and skills through research and experimentation, in-house and external classes.
  • Must have at-least 4 years of experience designing, developing and maintaining solutions using Biztalk.
  • Experience in configuring multi server Biz Talk environments (DEV, QA, and PROD), new hosts, adding and configuring adapters, performance optimization, service level management, capacity management and availability management.
  • Must have strong implementation knowledge in EDI transactions such as ,824. Knowledge in CIECA implementation is plus.
Additional Information

All your information will be kept confidential according to EEO guidelines.

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Position Requirements
10+ Years work experience
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