Software Development & Systems Consulting

Practical software solutions backed by more than 45 years of experience in business application development, systems analysis, and technology integration.

Specializing in IBM i (AS/400), RPG development, and Db2 for i, with additional experience in web development, database applications, and systems integration.

Extensive IBM i Experience

IBM i systems have been central to my work for more than four decades. My experience spans the evolution of IBM midrange computing, from System/36 and AS/400 to modern IBM i environments running on IBM Power Systems.

I provide hands-on expertise in developing, maintaining, troubleshooting, and enhancing business-critical applications.

IBM i capabilities include:

RPG II, RPG III, RPG IV/ILE, and free-format RPG
CL programming and system utilities
Db2 for i, SQL, database design, and optimization
DDS, display files, subfiles, and interactive applications
Legacy application maintenance and modernization
Application integration and data exchange
Performance analysis and troubleshooting

I understand the importance of existing systems and the business processes they support. Modernization doesn’t always mean replacement. Often, the best solution is to enhance what already works.

Beyond IBM i

My consulting experience extends to other technologies and business applications.

Services include:

Business application development and maintenance
Systems analysis and technical consulting
Database development and SQL solutions
Web applications and related technologies
Integration between existing and new systems
Troubleshooting and problem resolution

Whether working with established applications or newer technologies, my approach is to understand the business requirements, identify practical solutions, and deliver reliable, maintainable results.

Independent Consulting. Personal Service.

I work directly with businesses and other technology providers, offering experienced technical assistance without unnecessary complexity.

Projects can range from resolving a specific technical problem to ongoing application development, maintenance, and systems consulting.

Let’s Discuss Your Project

If you need help maintaining an established IBM i application, improving an existing system, or developing something new, I’d welcome the opportunity to discuss your requirements.

Walter Day
Independent Software & Systems Consultant

Email: wally@wallyday.com