.NET Developer

Job ID: 113270
Location: Montgomery, AL  [On-Site]
Category: App/Dev
Employment Type: Contract
Date Added: 08/07/2026
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Role Summary
A mid-level .NET developer with mainframe experience is sought to support and enhance enterprise applications within a complex hybrid environment. This role involves maintaining legacy systems, modernizing application architectures, and supporting system integrations, reporting solutions, and production activities. The position offers an opportunity to work closely with cross-functional teams to deliver scalable, secure, and reliable solutions, bridging legacy mainframe systems with modern Microsoft technologies.

Responsibilities

  • Analyze, interpret, and decode legacy Easytrieve applications on IBM mainframe platforms.
  • Translate business requirements into technical specifications and application designs.
  • Develop, test, and deploy application enhancements and fix defects.
  • Support batch processing, data transformation, and enterprise integration workflows.
  • Create and maintain reports, data extracts, and distribution processes.
  • Develop ETL solutions using SQL Server Integration Services (SSIS).
  • Design, develop, and maintain reporting solutions with SQL Server Reporting Services (SSRS).
  • Write, optimize, and troubleshoot complex SQL queries, stored procedures, views, and other database objects.
  • Monitor application performance and resolve production support issues to ensure system stability and data integrity.
  • Participate in application modernization and legacy system migration projects, ensuring smooth integration and transition.

Qualifications

  • Bachelor’s degree in Computer Science, Information Technology, Information Systems, or related field; or equivalent work experience.
  • 3–7 years of professional software development experience, including at least 3 years supporting IBM mainframe environments.
  • Experience supporting large-scale enterprise applications in a hybrid or complex environment.
  • Strong analytical, troubleshooting, and problem-solving skills.
  • Excellent verbal and written communication abilities.
  • Proficiency in mainframe technologies such as JCL, CICS, ROSCOE, or TSO.
  • Solid understanding of Microsoft .NET Framework / .NET Core, C#, Entity Framework Core.
  • Extensive experience with SQL Server, T-SQL, SSRS, SSIS, stored procedures, and performance tuning.
  • Ability to work independently with minimal supervision and collaborate effectively across technical and business teams.
  • Willingness to work on-site as required.

Publishing Pay Range: $50.00 – $60.00 Hourly
This position is based in office and requires employee to work on-site.

About GDH:
At GDH, we believe in the power of people and the importance of caring. Our culture statement, “We care about people,” isn’t just a tagline – it’s the core of everything we do. GDH is a premier staffing and talent solutions company dedicated to helping businesses find the best talent and assisting job seekers in finding their dream jobs.

Who We Are:
GDH, founded in 2001, has grown into a leader in providing staffing solutions across various industries. We specialize in IT across several sectors, connecting top talent with leading enterprises. As a Best of Staffing firm recognized for excellence in client, employee, talent, and women’s services, we pride ourselves on our commitment to quality and service.

GDH Benefits

GDH offers a range of employee benefits that are designed to promote well-being and help maintain a healthy work-life balance. These comprehensive benefits cover various aspects of an employee’s life and aim to enhance their overall experience with the company. Our health benefits include three medical insurance options with access to KISx Card, Zero Card, and HealthJoy concierge services. Other plan offerings include dental, vision, life, disability, supplemental insurance, and pet insurance plans. Enjoy additional perks like holiday pay, 401(k) plan, direct deposit, an employee referral program, work-life balance benefits, a Wellbeats membership, a discounted gym membership program, and more!  For more detailed information on benefits, please go to GDH’s website under the tab for candidates.

GDH provides equal employment opportunities (EEO) to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, gender, sex (including pregnancy), sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, ancestry, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable federal, state, and local laws. Applicants with disabilities who require an accommodation or assistance in applying and/or for interviewing, please contact our HR Department.

Please visit our notice of collection for California applicants.

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