Renier J.
Senior IBM i Developer
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About
Renier V. is a Senior IBM i Developer with over 40 years of experience in the IT industry, focusing extensively on RPG development through Free Format RPGILE, and CL/CLLE alongside DB2/SQL capabilities. Based in Pretoria, South Africa, Renier has played pivotal roles in designing, developing, and maintaining critical applications across industries such as financial services, insurance, and healthcare claims. His expertise includes middleware design, program-code generators, and application modernisation tools, emphasizing detail and standards. Currently contracted with MMI (Momentum Metropolitan) until September 2026, Renier is well-equipped for remote engagements; his South Africa time zone aligns closely with UK hours, ensuring real-time collaboration. He has led projects involving the development of data warehouse products and managed the full lifecycle of application amendments against business analysis specifications. Renier excels in facilitating code reviews, mentoring developers, and utilizing tools such as the IBM i toolset, Rational Development Platform, and Azure DevOps to achieve streamlined development processes.
Experience
Senior Software Developer
MMI (Momentum Metropolitan) · 2022 — 2026Designed and developed a data warehouse product for a commissions database from specifications to production. Made amendments and extensions to existing applications based on business analyst requirements, including development testing and support for the testing team. Facilitated code review processes and oversaw product promotion to production. Constructed and automated an enquiry tool for comparing program objects between production and development environments. Mentored entry-level and intermediate developers on current IBM i techniques.Senior Software Developer
Telesure Investment Holdings · 2017 — 2020Implemented application changes based on business analyst specifications for one of South Africa's leading financial services groups encompassing short-term and long-term insurance, health insurance, and a comparison platform. Provided project timelines and participated in daily scrum meetings to monitor progress and address obstacles. Led development testing, facilitated code reviews, and managed the promotion to production while supporting the business through production testing and sign-off. Offered customer support and trained junior/intermediate colleagues in IBM i techniques.Senior Software Developer
Mediscor PBM · 2015 — 2017Created new functionalities for South Africa's first pharmacy benefit management (PBM) system, frequently working directly from user requirements without formal specifications. Maintained existing applications, enhanced performance and quality of core systems, and provided customer support. Assisted colleagues with up-to-date IBM i development techniques.Senior Product Developer
Tembo Technology Lab · 2012 — 2014Developed UIM-based maintenance panels for the Adsero Optima Foundation product, enabling customers to manage their database metadata. Designed 'AOL' (Adsero Optima Logic), a utility that analyzed legacy application code to identify replaceable validity logic through database constraints or triggers, and pinpointed code blocks suitable for reusable procedures. Created an impact-analysis tool to guide customers in assessing the effects of database and program changes.Senior Software Developer
Medikredit · 1994 — 2012Developed and maintained financial and medical claims processing applications, including EDI interfaces, for a national medical-aid claims processor. Created custom tools to optimize data transfer performance across platforms, providing ongoing user support.
Skills & Expertise
Education
- N3 CertificateTechnical College of Pretoria West · 1980 — Present
- N1 CertificateTechnical College of Pretoria West · 1980 — Present
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