AS400 Developer

Job ID: 111831
Location: Reston , Virginia  [Remote]
Category: App/Dev
Employment Type: Contract
Date Added: 01/23/2026
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AS400 Developer

We are seeking a highly experienced AS400 Developer to join our dynamic team. In this role, you will leverage your extensive expertise in legacy and modern systems to deliver reliable, efficient solutions. You will collaborate with cross-functional teams to support ongoing operations, implement enhancements, and facilitate system transitions.

Key Responsibilities:

  • Provide first-line support by troubleshooting and resolving help desk tickets related to user issues and system break fixes.
  • Develop, test, and implement applications using COBOL/400, CL, DDS, and IBM DB2/SQL on the AS400 platform.
  • Contribute to software enhancement projects and assist in transitioning systems from AS400 to .NET environments.
  • Support periodic operational tasks, including file uploads/downloads and year-end financial rollovers.
  • Document existing processes to aid software conversion efforts and ensure smooth process flows.
  • Collaborate with Business Analysts and other stakeholders to gather requirements and implement effective solutions.
  • Participate in support of transitional efforts, ensuring seamless migration and integration.

Qualifications:

  • Minimum of 5 years of hands-on experience in AS400 software development.
  • Extensive experience with COBOL/400, CL, DDS, and IBM DB2/SQL.
  • At least 5 years as a Business Analyst, with a solid understanding of business processes.
  • Proficiency in Microsoft Office tools: Word, Excel, Visio (minimum 3 years).
  • Bonus experience: Agile methodologies, Peoplesoft or other financial systems, PeopleSoft development tools, .NET, Java, or PHP in web environments.
  • Ability to work independently, manage multiple projects simultaneously, and adapt to changing priorities.
  • Action-oriented mindset with a proactive approach to ownership and problem-solving.
  • Strong customer service orientation and excellent communication skills.

Additional Information:

  • Must be legally authorized to work in the United States without employer sponsorship, now or in the future.

Pay Range: $65.00 – $70.00 USD Hourly

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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