Alexandru is available for hire
Hire AlexandruAlexandru Costea
Verified Expert in Engineering
SAP Solutions Architect and Developer
Location
Bucharest, Romania
Toptal Member Since
November 17, 2022
Alexandru is a certified SAP S4 HANA ABAP and Fiori developer with more than 10 years of experience and a good understanding of business processes. He has vast knowledge in ABAP and Fiori programming, working on multiple projects in industries like retail, automotive, oil and gas, transportation, and utilities in support and implementation projects on FI/CO, SD, MM, PP, and EWM modules. He is adaptable, comfortable working under pressure, and quick to grasp new concepts and technologies.
Portfolio
Freelancer
ABAP, SAP Architecture, SAP Fiori, SAP Process Orchestration (PO)...
Euromaster
ABAP, SAP Interfaces, SAP Integration, SAP Fiori, Agile, Jira...
IBM
ABAP, SAP Process Integration (PI), SAP Interfaces, SAP Integration, Java
Experience
Availability
Part-time
Preferred Environment
SAP, ABAP, SAP Fiori, SAP Process Orchestration (PO), SAP Process Integration (PI), SAP Architecture, SAP Security, SAP Integration, SAP Analytics Design Studio, SAP HANA
The most amazing...
...thing I've built is an E2E SAP S4 HANA architecture, automating processes in each department that instantly generated added value for the client's business.
Work Experience
SAP ABAP and Fiori Technical Lead
2019 - 2022
Freelancer
- Validated and made the solution architecture the central point of contact between business representatives and the technical team, implementing and providing solutions for complicated technical requests.
- Implemented new functionalities in SAP S4 HANA, end-to-end interfaces, and analytical reports. Developed and enhanced Fiori applications and created technical catalogs, business catalogs, and roles.
- Developed integration scenarios in the middleware systems and created interfaces using IDOC, RFC, File, SFTP, OFTP, APIs, SOAP, and HTTP adapters.
- Designed interface solutions based on functional specifications in line with SAP best practices.
- Involved in migration topics, including designing and developing custom reports used for the migration phase, leading the design, map, and transformation activities in the Sanity tool working with LTMC.
- Created CDS views, AMDP, OData services, and Annotation-based services, which included enhancing the standard and developing custom Fiori applications in BAS.
- Implemented the main internal quality check assurance tool, ABAP Test Cockpit, which reduced issues in the production system by 45%.
- Supported and helped functional users to perform integration testing.
- Developed ABAP Web Services and created service definitions and service providers. Managed SAP Business Add-ins (BAdi) implementations, user exits, CMOD/SMOD function exits, and framework enhancement.
- Implemented OData API interfaces as a consumer and service provider for previewing the approvers, creating purchase contracts and orders, and materials replications.
Technologies: ABAP, SAP Architecture, SAP Fiori, SAP Process Orchestration (PO), SAP Interfaces, Agile, SAP HANA, SAP Cloud Platform Integration (CPI)
SAP ABAP, PI, and Fiori Technical Lead
2017 - 2019
Euromaster
- Participated in the analysis, design, construction, testing, production, and postproduction.
- Implemented new functionalities in Fiori applications.
- Developed BAdi, user exits, and CMOD/SMOD function exits. Created the Enhancement Framework activation logic.
- Implemented the primary internal quality check assurance tool, ABAP Test Cockpit, which reduced issues in the production system by 60%.
- Took the lead on complex tasks and activities and provided analyses and solutions to complex processes.
- Developed new interfaces in ABAP and PI/PO side using IDOC, RFC, File, SFTP, OFTP, SOAP, and HTTP adapters.
- Created the ABAP Development Guideline and made the code review for other colleagues.
- Designed print forms using Smart Forms and Adobe Forms, implementing the BRF+ output management using Print, Email, IDoc, and XML channels.
- Built technical specifications and estimates for required enhancements as part of the lifecycle of changed requests and projects.
- Incorporated new functionalities not available in the standard system on business requirements.
Technologies: ABAP, SAP Interfaces, SAP Integration, SAP Fiori, Agile, Jira, SAP Solution Management, SAP Process Integration (PI)
ABAP and PI/PO Technical Consultant
2013 - 2017
IBM
- Analyzed, maintained, developed, and enhanced various system functionalities in ABAP and PI areas. I also upgraded and implemented the SAP system from SAP ERP to SAP S4 HANA.
- Created outbound and inbound proxy scenarios and supported functional users in performing integration testing.
- Developed list reports, overviews, and analytical list applications using Fiori elements and Core Data Services (CDS) annotations.
- Implemented fixes and enhancements and performed technical analysis, designs, reviews, testing, and debugging.
- Delivered, maintained, troubleshot, and enhanced programs' functionality.
- Developed integration interfaces in the middleware and back-end SAP systems using IDoc, RFC, File, SFTP, OFTP, SOAP, and HTTP adapters.
- Created PI/PO mapping implementation for different scenarios.
- Analyzed program behavior in debug mode and provided technical solutions for production issues.
- Improved the performance of the existing inbound and outbound interfaces.
- Prepared SQL queries on HANA Studio to generate reports on migration activities into the new procurement system or migration of the documents into the new financial year.
Technologies: ABAP, SAP Process Integration (PI), SAP Interfaces, SAP Integration, Java
Experience
SAP S4 HANA v.2021 Implementation
I was the full-stack developer ABAP and Fiori lead, implementing new functionalities in SAP S4 HANA, integrating and validating the SAP system with third-party systems, and making the solution architecture of SAP S4 HANA.
SAP S4 HANA v.2019 Implementation
I was the solution architect and the central point of contact between business representatives and the technical team, implementing new functionalities in SAP S4 HANA and providing solutions for complicated technical requests.
SAP S4 HANA Support and Performance Optimization
I was the SAP technical lead, implementing heavy performance optimizations on pre-existing reports, using the ABAP trace (SAT) and the ABAP profiling perspective to measure and compare runtime consumption.
I used SAP Code Inspector (SCI) and ABAP Test Cockpit (ATC) to locate potential functional and performance issues. Compared the results of ATC and SQL monitor with SQL Performance Tuning worklist and created the CDS Views and AMDP to perform the calculations on the HANA database and boost the performance of the reports.
I used SAP Code Inspector (SCI) and ABAP Test Cockpit (ATC) to locate potential functional and performance issues. Compared the results of ATC and SQL monitor with SQL Performance Tuning worklist and created the CDS Views and AMDP to perform the calculations on the HANA database and boost the performance of the reports.
SAP Upgrade Project from ECC to S4 HANA
I was the SAP ABAP and PI lead, coordinating the technical team to migrate, develop, and enhance the SAP functionalities from the old SAP ECC to the new S4 HANA v.2019.
Created the ABAP development guideline and applied SAP best practices.
Created the ABAP development guideline and applied SAP best practices.
SAP Data Migration
I was the SAP data migration expert consultant, designing and developing custom reports. I used Sanity and Migration Cockpit tools for the migration phase, leading the design, mapping, and transforming activities.
SAP ECC Implementation
I was the SAP senior consultant, performing technical analysis, designing, reviewing, testing, debugging, and implementing fixes and enhancements.
I also actively participated in the analysis, design, construction, testing, production, and post-production phase.
I also actively participated in the analysis, design, construction, testing, production, and post-production phase.
Android Application for Project Planner
I was the Android developer, designing and implementing an algorithm that determines and extracts the key points of the project identifier.
Organized and kept the project progress in the virtual classroom, shared with the teacher and colleagues.
Organized and kept the project progress in the virtual classroom, shared with the teacher and colleagues.
Education
2014 - 2016
Master's Degree in Cloud Computing and Secure Internet of Things
Politehnica University of Bucharest - Bucharest, Romania
2010 - 2014
Bachelor's Degree in Electronics, Telecommunications, and Information Technology
Politehnica University of Bucharest - Bucharest, Romania
2006 - 2010
High School Diploma in Mathematics and Computer Science
National College Nicolae Grigorescu - Campina, Romania
Certifications
OCTOBER 2020 - PRESENT
SAP Certified Development Specialist - ABAP for SAP HANA 2.0
SAP
SEPTEMBER 2019 - PRESENT
SAP Certified Development Associate - SAP Fiori Application Developer
SAP
MARCH 2019 - PRESENT
SAP Certified Development Associate - ABAP with SAP NetWeaver 7.50
SAP
JUNE 2018 - PRESENT
Enterprise Design Thinking Practitioner
IBM
OCTOBER 2017 - PRESENT
IBM Blockchain Essentials
IBM
MAY 2017 - PRESENT
Travel and Transportation Industry Jumpstart
IBM
Skills
Tools
SAP Fiori, SAP Security, SAP Analytics Design Studio, Jira, SAP Solution Management, SAP Materials Management (MM), SAP Production Planning (PP)
Platforms
SAP HANA, Android
Languages
ABAP, Java, SQL
Paradigms
Agile, Scrum
Other
SAP, SAP Architecture, SAP Integration, SAP Interfaces, SAP IDoc, SAP ERP, SAP ECC, Business Processes, Integration, Applied Mathematics, SAP Process Orchestration (PO), SAP Process Integration (PI), Design Research, Data Synthesis, IoT Security, Electronics, CCNA Security, SAP Cloud Platform Integration (CPI), SAP FICO, SAP Sales and Distribution (SAP SD), Data Migration, SAP LSMW Data Migrations, SAP Implementation
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