ABAP Developer with 3+ Years SAP Expertise

UMA MAHESWAR REDDY NALLAMILLI

602-***-**** ********@***.*** linkedin.com/in/umanallamilli github.com/unallami SUMMARY

ABAP developer with 3+ years building, optimizing, and supporting custom solutions in ECC/S/4HANA. Strong in Clas- sical/ALV reports, module pool, enhancements (BADIs, user/customer exits), LSMW (Direct Input, BAPI, Batch Input Recording, IDoc), and integrations (IDoc/ALE, RFC, proxies, web services). Deep debugging/performance tuning (ST22, ST12, SAT, SQL Trace) and hands-on break/fix through system and UAT testing. Partner with SD/MM/FI teams on fit/gap and technical designs.

EDUCATION

Arizona State University Aug 2024 – May 2026

Master of Science, Computer Software Engineering GPA: 4.0/4.0 TECHNICAL SKILLS

ABAP: ABAP/OO, Classical & ALV Reports, selection screens, module pool, enhancements (BADIs, user/customer exits), Smart/Adobe Forms

Data Migration: LSMW (Direct Input, BAPI, Batch Input Recording, IDoc), BDC, field mapping, validations, reconciliation Integrations: IDoc/ALE (WE02, WE05, BD87), partner profiles/ports, RFC, proxies, web services Perf/Debug: ST22, ST12, SAT, SQL Trace, indexing, Open SQL optimization Modules: SD, MM, FI

Tools: SolMan, Soldoc, Git, JIRA

WORK EXPERIENCE

Deloitte USI ABAP Developer Aug 2021 – Aug 2024

· Designed, built, and enhanced custom ABAP programs (reports, conversions, module pool, enhancements) to meet business requirements; optimized Open SQL/indexing to reduce runtimes by up to 50%.

· Developed Classical/ALV reports with dynamic selection screens, interactive drilldowns, subtotals/aggregations for SD/MM/FI stakeholders.

· Led LSMW development (Direct Input, BAPI, Batch Input Recording, IDoc) for high-volume loads; implemented pre/post- load validations and reconciliation achieving 99.9% accuracy.

· Engineered interfaces using IDocs, RFCs, and proxies; configured and monitored via WE02/WE05 and reprocessed errors in BD87 with robust application logs.

· Performed in-depth debugging (ST22 dumps, SAT traces, SQL Trace) to resolve logic/performance defects; owned break/fix through system testing and UAT, with root-cause analysis and permanent fixes.

· Collaborated with functional consultants (SD/MM/FI) on fit/gap; authored technical designs, unit tests, and change documen- tation in SolMan/Soldoc.

Deloitte USI — Client: Gordon Foods Development Project

· Delivered ALV reports and targeted enhancements for O2C/PTP scenarios; standardized selection screens and output layouts across rollouts.

· Built LSMW objects using BAPIs and Batch Input Recording for master/transaction data; automated mappings and created reconciliation utilities.

· Implemented/modified IDoc interfaces (e.g., ORDERS, DELVRY, INVOIC, MATMAS) with partner profiles/ports; estab- lished monitoring (WE02/WE05) and reprocessing (BD87) playbooks.

· Supported system testing, UAT, and hyper-care with rapid defect triage, debug traces, and performance tuning. Deloitte USI — Client: Tenneco Inc. Development Project

· Implemented user/customer exits and BADIs for pricing/tax and P2P/O2C flows; added audit-friendly logs and clear error messaging.

· Designed custom correction programs and conversion utilities; optimized Open SQL and buffering for high-volume records.

· Built BAPI-based integrations to upstream/downstream systems; hardened IDoc error handling and reprocessing, improving SLA adherence.

· Produced technical specs and unit tests; partnered with process designers on fit/gap and recommended gap solutions.

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