Senior AS/400 RPG & IBM i Developer with 28+ Years Experience

TAMER GULER

+1-321-***-**** / +1-407-***-**** / • ******.*****@*****.***

EDUCATION

York University – Bachelor of Finance, 2017

Turkey Anatolian College – Science Degree, 1982

TECHNICAL SKILLS

IBM i Systems & Legacy Environments

AS/400, IBM iSeries, OS/400 (up to V7 R4), Systems IBM 34/36/38

DB2 Relational Database Design: DDS SubFile, DDM, DDL, PF, LF, DSPF, PRTF

Programming Languages & Technologies

RPG/400, CL/400, DB2/400, RPGIV, OS/400, RPG(ILE, Free) and CLLE

SEU, SDA, PDM, DBU, DFU, RLU, QUERY/400, SQL400, OPNQRYF, SQL400

XML, IFS (Integrated File System)

Interactive & Batch Debugging,

Journaling, Data Queue

Development Tools & Platforms

Visual Studio Code, RDi (v9.5),

Hawkey/Pathfinder(Analyze Documentation),

oImpact Analysis, Cross Reference, Source Level Documentation, Mass Compile, Security Analysis

X-Analysis

oView: Application Grafic. Doc.

oAdvisor: Coding Quality, Data Model Vision, Effective Analyze

oX-Modernize: RPG ve Synon Coding convert > Java/PHP’ye

oX-DB Transform: DDS > DDL

oX-Replay: Automatically record 5250 screen tests and create scenarios

TurnOver (Change Management),

BRMS (Backup MAnagement), GoAnywhere (Any Files Transfer, from to through Anywhere)

Microsoft Office Suite (Excel, Word, Project, PowerPoint, OneNote)

JIRA (Job Management)

METHODOLOGIES

SDLC – Full Software Development Lifecycle

ITIL – Strategy, Design, Transition, Operations & Continual Improvement

Agile – Iterative delivery and cross-functional collaboration

Six Sigma – DMAIC & DMADV frameworks for quality & process improvement

oDefine, Measure, Analyze, Improve, Control

oDefine, Measure, Analyze, Design, Verify

BUSINESS SYSTEM EXPERIENCE

ERP Systems

Custom Development >Enterprise Resource Planning (Finance, HR, BI, CRM, SCM, Manufacturing, Raw Material)

MAPICS & BPCS Integration (Planning, Distribution, Manufacturing)

Domain Expertise

Finance: AP, AR, GL, Billing, Fixed Assets, Payroll, Costing

Supply Chain Management, CRM, SOP, MRP, Forecasting, Scheduling

Data Mining, Distribution Resource Planning, Capacity Planning

CORE CAPABILITIES

Analyze, test and enhance code quality

Troubleshoot software defects and deliver scalable solutions

Lead system conversions and implementation roadmaps

Collaborate with internal stakeholders for continuous support

Maintain and document business-critical software enhancements

PROFESSIONAL EXPERIENCE

One-Bilisim Limited (Middle-East, Türkiye)

Sep 2021 – Present • AS400 Application Developer & Business Analyst (Remote)

Led end-to-end program development on IBM i (AS400) with DB2 database connectivity

Conducted root-cause analysis and addressed system deficiencies with tailored coding solutions

Managed offshore teams in data migration, conversion and performance tuning projects

Created user manuals, technical flowcharts, and comprehensive project documentation

Ensured quality through rigorous QA testing and control reporting before production deployment

TCS (TATA Consultancy Services, USA)

Mar 2018 – Aug 2021 • RPG Developer & Program Auditor (On-Site)

Developed RPG applications and automated SDLC workflows using TurnOver

Audited code, resolved system errors, and enhanced program efficiency with DB2 optimization

Delivered MIS solutions and data mining programs with offshore collaboration

Produced detailed database maps, technical flows, and end-user guides for smooth implementation

Gencallar Textile & Clothing (Türkiye - Remote)

Nov 2017 – Feb 2018 • AS400 Developer & Project Manager

Developed and customized ERP and retail management programs for the textile sector

Maintained legacy RPG codebases while enhancing database-driven reporting tools

Managed financial applications including costing, accounting, logistics, and distribution

Implemented AS400 automation in order processing and time management

NBC Universal, Orlando, FL, USA

Jun 2016 – Oct 2017 • AS400 Application Analyst / RPG & SQL Developer (On-Site)

Maintained and redesigned retail supply chain applications using RPG, SQL, and XML

Streamlined QA testing and collaborated closely on supply chain business solutions

Bank of America, Dallas, TX, USA

Nov 2015 – May 2016 • ISeries RPG Programmer / SQL Developer (On-Site)

Developed and supported mortgage and insurance systems on IBM iSeries

Led testing and QA training sessions; maintained SCRA and compliance modules

Provided documentation and support for privacy, financial crime, and HELOC operations

Hewlett-Packard, Houston, TX, USA

Jun 2013 – Oct 2015 • ISeries RPG Developer (Hybrid)

Enhanced supply chain systems including VISTA order entry and error correction

Refactored and tested RPG ILE programs to support accounting and sales workflows

Program Analyzing.

Business System Performace Control.

Gencallar Textile & Clothing (Türkiye / On-site)

Apr 2007 – May 2013 • AS400 Developer & Project Manager

Developed and customized ERP and retail management programs for the textile sector

Maintained legacy RPG codebases while enhancing database-driven reporting tools

Managed financial applications including costing, accounting, logistics, and distribution

Implemented AS400 automation in order processing and time management

SETA Software House (Switzerland / Europe / Middle East)

Jun 1998 – Mar 2007 • AS400 Project Manager & Developer (Hybrid/On-Site)

Led ERP, retail, and warehouse systems development across international teams

Managed legacy system transitions from System/34 > 36 > 38 > AS400

Delivered custom database design for order automation, forecasting, and MIS reporting

Goodyear Tire & Rubber Company (USA / Middle East)

Mar 1988 – May 1998 • AS400 Developer & Business Analyst

Directed project development for financial, manufacturing, and inventory systems

Integrated global accounting systems and led IRS compliance automation

Spearheaded custom MIS reporting, promotions tracking, and production control

YKB Bank International (Türkiye HQ)

Jan 1986 – Feb 1988 • System Admin – IBM 34/36/38/AS400

Managed database administration and system operations across IBM platforms

Oversaw job messaging queues, IPL operations, user device setups, and PTF installations

Contact this candidate