Senior .NET Developer
QUANTUM TECHNOLOGIES LLC· enterprise· Oct 6, 2026 · 22d ago
Chicago, IL
In office
Full-time
Senior
$121K–$180K est.
8+ years exp
Job description
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Job Description
Job Overview
• Job ID:
J51770
• Job Title:
Senior .NET Developer
• Location:
Chicago, IL
• Duration:
12 Months + Extension
• Hourly Rate:
Depending on Experience (DOE)
• Work Authorization:
US Citizen, Green Card, OPT-EAD, CPT, H-1B,
H4-EAD, L2-EAD, GC-EAD
• Client:
To Be Discussed Later
• Employment Type:
W-2, 1099, C2C
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Job Title: Senior .NET Developer
Job Overview:
We are looking for an experienced Senior .NET SQL Developer / Support Engineer who will play a key role in maintaining, monitoring, troubleshooting, and enhancing enterprise applications. This position requires strong expertise in .NET, SQL, and production support, including handling critical issues during off-hours.
Preferred Skills & Qualifications
• 8+ years of experience in developing Web and Windows-based applications.
• Strong requirement analysis skills with experience preparing functional & technical documentation.
• Expertise in database development (tables, functions, stored procedures, views, triggers).
• Experience creating SQL deployment scripts and packages for releases.
• Hands-on experience with:
•
• jQuery, Kendo jQuery UI, HTML/HTML5, XAML, CSS, Font Awesome, JavaScript
• C#.NET, MVC, REST/Web API
• SSRS and Report Builder
• Experience in unit testing, integration testing, defect resolution, and L2/L3 production support.
• Strong communication skills, ownership mindset, and ability to work independently or in a team.
• Willingness to work rotational shifts and provide on-call support during evenings/weekends/off-hours.
• Familiarity with Agile/Scrum methodologies (sprints, backlog grooming, daily scrums, retrospectives).
Key Responsibilities
• Develop Web and Windows applications based on requirements and design specifications.
• Prepare and maintain requirement, functional, technical, and end-user documentation.
• Design and maintain database objects and SQL scripts; handle change requests for releases.
• Perform unit and integration testing and resolve defects.
• Manage coding, code reviews, and maintenance tasks ensuring timely delivery.
• Actively participate in UAT/QA/Production releases and provide L2/L3 production support.
• Support Agile Scrum activities including sprint planning, standups, retrospectives, and reviews.
• Work on minor enhancements and critical issue resolutions, including handling outages.
Apply Now
Equal Opportunity Employer
QUANTUM TECHNOLOGIES LLC is an equal opportunity employer inclusive of female, minority, disability and veterans, (M/F/D/V). Hiring, promotion, transfer, compensation, benefits, discipline, termination and all other employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, citizenship/immigration status, veteran status or any other protected status. QUANTUM TECHNOLOGIES LLC will not make any posting or employment decision that does not comply with applicable laws relating to labor and employment, equal opportunity, employment eligibility requirements or related matters. Nor will QUANTUM TECHNOLOGIES LLC require in a posting or otherwise U.S. citizenship or lawful permanent residency in the U.S. as a condition of employment except as necessary to comply with law, regulation, executive order, or federal, state, or local government contract
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