Senior RPG Developer

Oldcastlebuildingenvelope; Dallas (TX); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Industry competitive benefits

Work-life balance with PTO and holidays

Annual raises and bonuses

Training and skill development

Job summary

Oldcastlebuildingenvelope in Dallas is looking for a Senior RPG Developer to provide technical leadership and hands-on development for IBM i based ERP platforms. This role focuses on modernizing legacy RPG applications and mentoring junior developers.

The ideal candidate will have over 5 years of RPG ILE experience, strong communication skills, and the ability to balance legacy support with modernization strategies. We offer competitive benefits and a culture that rewards performance.

Qualifications

• 5+ years of RPG ILE development experience, free-form strongly preferred.
• Strong experience with CL, DDS, and DB2 for i.
• Proven experience modernizing or refactoring legacy systems.

Responsibilities

• Lead the design, development, and modernization of RPG ILE applications.
• Refactor legacy RPG into free-form, modular code.
• Use AI-assisted development tools for code comprehension and documentation.

Skills

RPG ILE development

CL

DB2 for i

Git

AI-assisted coding tools

Education

Bachelor's degree in Computer Science, Information Systems, or equivalent

Job description

Come Join Us!

From apartments in New York to hospitals and stadiums in Dallas, libraries at prestigious universities to creating modern retail experiences, our teams contribute architectural glass and building products to projects that shape the way people live, work, heal, learn, and play. At OBE, the work of our employees truly matters. With over 6,500 employees, we operate more than 80 manufacturing and distribution facilities in five countries. You can see some of our favorite projects here.

Start your journey with OBE and help us build the future.

What You'll Get to Do

We are seeking a Senior RPG Developer to provide technical leadership and hands‑on development for our IBM i (AS/400) based ERP platforms. This role is focused on modernizing legacy RPG applications using contemporary development practices, structured refactoring techniques, and AI‑assisted development tools. The ideal candidate brings deep RPG expertise, mentors others, and helps drive long‑term platform sustainability.

• Lead the design, development, and modernization of RPG ILE applications across our IBM i–based ERP platforms
• Refactor legacy fixed‑format RPG into free‑form, modular, and service‑oriented code
• Use AI‑assisted development tools to accelerate code comprehension, refactoring workflows, and documentation
• Establish, document, and champion development standards and best practices across the team
• Partner with business analysts and stakeholders to translate business needs into clean, effective technical solutions
• Design and support integrations, batch jobs, and ERP interfaces
• Perform advanced troubleshooting, root‑cause analysis, and production support
• Create and maintain technical documentation that makes life easier for the entire team
• Mentor junior and mid‑level developers sharing knowledge, building capability, and raising the bar for the team

What We Are Looking For

• 5+ years of RPG ILE development experience (free‑form strongly preferred)
• Strong experience with CL, DDS, and DB2 for i
• Deep understanding of IBM i job processing and batch environments
• Proven experience modernizing or refactoring legacy systems
• Familiarity with Git or modern source control workflows
• Exposure to or hands‑on experience with AI‑assisted coding tools
• Strong technical leadership and mentoring abilities
• Clear communicator with both technical and non‑technical audiences
• Analytical, detail‑oriented problem solver who can balance legacy support with forward‑looking modernization
• Bachelor's degree in Computer Science, Information Systems, or equivalent professional experience

Nice to Have:

• Experience with Infor Infinium
• Background in ERP integrations, EDI, or file‑based interfaces
• Familiarity with web services, APIs, SQL‑centric design, or service programs
• Experience supporting multi‑site ERP environments

We recognize that great developers come from many different paths. If you're confident you have the skills for this role, we encourage you to apply even if your experience doesn't check every box.

What OBEOffers You

• Benefits that benefit you – industry competitive benefits at the lowest cost to the employee
• Work‑life balance – PTO and holidays, including floating holidays you can choose
• Compensation that rewards your hard work – a pay‑for‑performance culture with potential for annual raises and bonuses
• Training – We will equip you with the knowledge and skills you need to succeed

OBE privacy policy

OBE will not discharge or discriminate against employees or applicants for discussing, disclosing, or inquiring about their own or others' pay.