Matti Lange - FullStack Developer

Recommended expert

Hamburg, Germany

Experience

Nov 2023 - Present

2 years 3 months

FullStack Developer

Ing DiBa GmbH

Developed and extended Fiori UI5/WebApps for areas such as general ledger, asset accounting, and others.
Implemented backend logic and OData services for a new S/4 HANA system
Analyzed the current state of SAP GUI transactions and derived suitable standard and custom developments
Designed technical concepts and implemented custom UI5 apps in the Fiori Launchpad
Automated OPA tests, extended and adapted standard Fiori apps
Documented and created developer manuals in the wiki
Conducted code reviews, approved and delivered software units via GitLab and SAP transports

Sep 2023 - Dec 2023

4 months

FullStack Developer

MHP/Porsche AG

Developed and optimized Fiori UI5/WebApps for procurement, purchasing, and product management
Implemented backend logic and OData services on S/4 HANA
Optimized code performance, refactored following clean code principles
Designed technical concepts and implemented custom UI5 apps in the Fiori Launchpad
Unit and OPA tests, documentation and wiki articles
Conducted code reviews, approved and delivered software units via GitLab and SAP transports

Aug 2023 - Sep 2023

2 months

FullStack Developer

ZEPAI

Extended Fiori UI5/WebApps for purchasing and contract management on newly deployed S/4 HANA
Implemented backend logic, OData services, and automated ABAP unit tests
Refactored and cleaned up code following clean code principles
Drafted technical concepts and implemented enhancements at various backend extension points
Documented and created developer manuals in the wiki
Conducted code reviews and delivered software units via Git and SAP transports

Jul 2021 - Present

4 years 7 months

FullStack Developer

Leogistics GmbH

Developed UI5/JavaScript web apps (Yard, Delivery, Tendering, etc.) with OpenUI5 (HTML5), React JS/TypeScript, SVG, Less/CSS
Implemented complex frontend libraries for custom maps, tables, value help, Gantt charts with drag & drop
Designed and implemented forms with extensive validation and error handling
Developed backend services with NestJs/NodeJs, MongoDB, Swagger, REST APIs
Implemented unit tests (Jest) and integration tests (Cypress)
Collaborated cross-functionally in Scrum teams with UX and DevOps
Managed CI/CD builds and deployments via GitLab

Feb 2021 - Mar 2021

2 months

SAP Fiori Consultant

BayWa

Analyzed and coached the use and extension of standard SAP Fiori apps in SAP FI
Advised on linking the apps (detail and external navigation) and activation in the Fiori Launchpad
Extended standard apps with custom views and OData services
Created technical concepts and supported deployment

Jan 2021 - May 2021

5 months

SAP UI5/Fiori Consultant and FullStack Developer

Nagarro Allgeier

Consulting and FullStack development of Fiori web apps in the retail environment (Edeka GmbH)
Coaching Frontend and Backend developers on programming concepts and best practices
Creating requirement specifications/concepts based on user stories
Developing SAP UI5 web apps with smart controls, annotations, and custom controls
ABAP OO programming of OData methods for CRUD and performance tuning
Using Fiori Elements, Fiori Extensions, SAP WebIDE, and SAP transports
Automated testing with QUnit and OPA

Nov 2020 - Nov 2020

1 month

SAP Fiori Consultant

SportScheck GmbH

Consulting on the development and activation of Fiori web apps across data from multiple SAP systems
Implementing CDS views, AMDP functions, and annotations on SAP HANA
Using Fiori Elements and UI5 flexibility services in the Fiori Launchpad
Configuring launchpad catalogs, tiles, and roles
Supporting onboard developers in extracting and displaying analytical reports

Jun 2019 - Apr 2021

1 year 11 months

SAP UI5/Fiori Developer

Implico Inc.

Developing UI5 and Fiori web apps (MVC) as add-ons for SAP IS-OIL
Customizing smart controls, custom controls, drag-and-drop, and drawing functionalities with HTML Canvas and SVG
Implementing WebSocket notifications via ABAP Push Channel
ABAP OO programming for OData methods and S/4HANA CDS views
CI/CD build and deploy with Gerrit, Maven, and Jenkins
Testing with QUnit and OPA and supporting QA teams

Jan 2018 - Apr 2018

4 months

SAP UI5/Fiori Developer

Edeka/Lunar GmbH

Prototyping and implementing UI5 web apps for a product recall system
Using master/detail, split screens, object pages, and smart fields
Integrating with BOPF-based OData services and PDF export via third-party libraries
SAP BUILD for prototyping and tests in the SAP Gateway Client
Following SAP Fiori guidelines and deploying on NetWeaver

Nov 2017 - Jun 2019

1 year 8 months

SAP UI5/OData Developer

Implico GmbH

Developing UI5 web apps and OData services as part of an SAP standard product for Integrated Dispatch Management
Customizing Smart Table, GeoMaps, Gantt charts, and VizFrame with annotations
Refactoring and redefining standard UI5 code for multiple UI5 versions
ABAP OO development of OData service classes and CDS views for annotations
Implementing multi-user communication via PCP WebSockets
CI/CD with Git, Gerrit, Maven, and Jenkins

Aug 2017 - Oct 2017

3 months

SAP OData/NW Gateway and UI5 Developer

Axians Hannover für Deutsche Bahn

Modeling OData models and ABAP OO development of service classes for reading, writing, and paging
Implementing caching mechanisms via SoftState and expand methods
Extending standard SAP UI5 applications and integrating them into the Fiori Launchpad
Testing and documenting in the SAP Gateway Client

Apr 2017 - Jul 2017

4 months

SAP UI5 Developer

Altow Software / Trebing & Himstedt

Developing SAPUI5 dashboards and web apps for Industry 4.0 monitoring based on SAP XMII and XML web services
Using Fiori templates, MVC pattern, and ABAP OO OData services
Extending standard controls and customizing CSS for specific charts and hierarchies
Functional testing and documentation

Feb 2017 - Mar 2017

2 months

SAP UI5 Web App Developer

SwissCom

Prototype development of an SAPUI5 web app for sales data using SAP SD and BW data via OData
Service generation and development with ABAP and annotations
Master/detail and tile views, charts, filters, and hierarchical navigation
Adhering to the Fiori guidelines and integrating into the Fiori Launchpad

Feb 2016 - Jan 2017

1 year

SAP BO Design Studio Developer

SinnerSchrader / Allianz

Developing mobile KPI dashboards for the Allianz Insurance executive board on iPad
Connecting to SAP BW 7.3 and integrating hierarchies for mobile displays
Custom visualizations: GeoMaps, bookmarking features, interactive capabilities
Performance optimization through parallelization, prerendering, and caching
Development leadership, presentations, and handovers

Jan 2016 - Feb 2016

2 months

SAP BW/HANA and BO Developer

SwissCom

Proof of concept: report development with SAP BO Crystal Reports and Design Studio
Data modeling in BW on HANA (composite providers, ADSOs)
Extractors and load processes in BW on HANA

Sep 2015 - Dec 2015

4 months

SAP BO Consultant and Developer

Gilbarco Veeder-Root

Development of BO reports and universes for a fuel management system
Performance optimization and data validation
Collaboration with an international team (USA, India, UK)

Mar 2015 - Jun 2015

4 months

SAP BI Consultant

UniCredit Bank

Lead development of BEx reports for HR
Coaching IT staff in BEx Query Designer and Web Application Designer
Programming Customer Exits and Web templates
Deploying reports to the Enterprise Portal

Nov 2012 - Jan 2015

2 years 3 months

SAP BI/IP and BO Consultant

Stadt Hamburg / DataPort

Technical coaching and development for budget planning in SAP BI/IP
Development of BEx queries, web applications, BO reports, and ETL processes
Coaching on data architecture, performance optimization, and transport procedures

Sep 2012 - Dec 2012

4 months

SAP BI Consultant

DHL

Enhancements in HR and CO reporting: BEx queries, workbooks, web applications
Development of complete ETL processes and performance tuning
Process chain monitoring and events

Apr 2011 - Sep 2012

1 year 6 months

SAP BI Consultant

Panasonic

Rollout of purchase, sales, and inventory key figure reporting in Europe
Programming complex BEx queries, workbooks, and VBA macros
ETL development with ABAP OO, performance optimization, and training sessions

Nov 2010 - Mar 2011

5 months

SAP BI Developer

Knorr-Bremse AG

Consolidation of SD and MM reports in the global SAP BI
Development and extension of extractors, ETL processes and DataMarts
BEx Queries, Workbooks and VBA macros

Apr 2010 - Sep 2010

6 months

BI Developer

Volkswagen AG

Building and extending a company-wide KPI system as a scorecard
Dashboard development with Xcelsius and WebI
ETL load processes with Informatica PowerCenter

Mar 2010 - Apr 2010

2 months

BI Consultant

Tchibo GmbH

Proof of concept for integrating a planning system with SAP BW via web services and XML
Feasibility study, prototyping and performance analysis

Feb 2010 - Mar 2010

2 months

BI Consultant

First Data

Proof of concept: connecting BO frontends to SAP BW with SSO
Workshops, prototyping and performance analysis

Jan 2010 - Mar 2010

3 months

BI Prototype Developer

Capgemini

Dashboard prototype for a sales incentive system using BO Xcelsius and Adobe Flex
Workshops, design and implementation

Nov 2009 - Dec 2009

2 months

BI Consultant

IHLE

Introduction of SAP BI for SD and MM data
Development of extractors, ETL processes and data deliveries

Mar 2009 - Dec 2009

10 months

BI Consultant

MLP

Development of a web-based sales control information system
Building a DataMart, BEx WebApplications and KPI dashboards

Aug 2007 - Sep 2008

1 year 2 months

SAP BI Consultant

Daimler AG

Rollout of SAP BI 7.0 for planning and billing of work units
ETL processes, DataMart modeling and web/Excel reporting

Mar 2007 - Jul 2007

5 months

SAP R/3 Consultant

DB Telematik

Rollout of SAP R/3 SD, MM and PS with interfaces to SAP BW
Development of RFC/IDoc interfaces and reports

Jan 2007 - Mar 2007

3 months

SAP BI Prototype Developer

CIBER AG

Building a BI DataMart for HR travel expense analysis
Extractors, ETL processes and BEx reports

Dec 2006 - Jun 2008

1 year 7 months

SAP Consultant

Ciber Novasoft AG

In-house SAP trainee (ABAP, BI, XI)
Consulting and development in SAP R/3 and BI projects

Jul 2006 - Nov 2006

5 months

IT Consultant

Normfall GmbH

Setting up the IT system for a mail-order pharmacy
Business process design, requirements analysis, and solution evaluation

Aug 2005 - May 2006

10 months

Working Student / Intern

Biotronik GmbH

Extending a data warehouse for technical monitoring in telemedicine
Developing a visualization tool for data mining

Nov 2004 - Jul 2005

9 months

Software Developer

Ministerium für Landwirtschaft Mecklenburg-Vorpommern

Developing an Oracle database and multi-user software for forest protection data analysis

Dec 2003 - Aug 2004

9 months

IT Consultant

Ministerium für Landwirtschaft Mecklenburg-Vorpommern

Database solutions and a block calculation program for long-term soil monitoring
VBA development for forest condition surveys

Aug 2003 - Oct 2003

3 months

Working Student

Giesecke + Devrient

GUI development, XML editor and authentication module in Java/Swing

Sep 2002 - Jul 2003

11 months

Research Assistant

Fraunhofer IGD

Web and database programming for trouble ticket system

Skills

Javascript/html5 Development With Ui5 / Reactjs
Nodejs / Nestjs / Typescript Development
Sap S/4 Hana, Sap Fiori
Abap/oo
Sap Bi: Backend, Etl Development, Bex Suite, Authorization Concept, Bwa, Process Chains, Sap Netweaver Portal (Expert Knowledge)
Business Objects: Design Studio, Web Intelligence, Dashboards (Xcelsius), Crystal Reports, Business Explorer (Advanced Knowledge)
Sap Bo Design Studio Training (2015)
Sap/abap/abap-oo (Expert Knowledge)
Sap Co, Sap Cs, Sap Ps (Good Knowledge)
Bo Data Integrator (Basic Knowledge)
Databases: Oracle (10g) (Advanced Knowledge), Mysql, Ms Access (Good Knowledge)
Informatica (Advanced Knowledge)
Oracle Warehouse Builder (Basic Knowledge)
Opensource Bi: Pentaho Suite (Basic Knowledge)
Data Mining Tools: Weka, Sap Datamining (Basic Knowledge)
Agile Project Approach With Scrum / Kanban Under Jira
Java Programming (Swing, Java/xml, J2ee)
Visual Basic For Applications (Vba)
Web Application Server: Tomcat, Jboss, Apache
Adobe Flash And Adobe Flex
Project Management With Ms Project And Sap Asap
Visual C++, Borland Delphi
Xml, Php, Html, Css, Javascript, Perl
Cvs, Novell Administration (Cna)
Development Tools: Eclipse, Jbuilder, Ms Visual Studio, Uml (Together J)
Various Application Software Like Ms Office, Lotus Notes, Adobe Products, Etc.
Independent, Flexible, Communicative, Team-oriented And Integrative
Analytical, Solution-oriented And Systematic Work Style
Process-oriented Thinking – Fast Error Analysis
Critically Questioning Solutions / Suggestions, Always With The Best Solution For The Customer In Mind
Committed, Highly Motivated With A Strong Willingness To Learn (I Can Quickly Get Excited About New Ideas And Am Interested In Technical Concepts And Implementation Strategies)