Oliver Lehmann
Angestellt, Software Developer, Gothaer Konzern
Köln, Deutschland
Werdegang
Berufserfahrung von Oliver Lehmann
1 Jahr und 10 Monate, Dez. 2020 - Sep. 2022
Solution Architect
REWE Systems GmbH
Designing solution architectures and advising the dev team on how to transform 20-40 year old monolithic applications like a central subsidiary ledger into a microservice or "modulith" architecture. Also considering aspects like reasonability, cost efficiency as well as "make or buy". Strongly focussing on asynchronous streaming solutions for application interaction instead of synchronous online (web-)services or the currently predominant database integration solutions.
7 Jahre und 8 Monate, Apr. 2013 - Nov. 2020
Senior Software Engineer & Software Architect
REWE Systems GmbH
Domain-Driven-Design, System Architecture, Review, Performance Tuning and Development of RESTful multi-layer Services for the REWE Merchandise System in Java using Spring Boot, RESTEasy, Jackson, MapR, MyBatis, Infinispan, Guava, DB2. Long term (5+ years) project: reimplementation of the legacy monolithic merchandise system by using the above stated mindset, tools and frameworks.
7 Jahre und 6 Monate, Okt. 2005 - März 2013
Senior Software Engineer
METRO SYSTEMS GmbH
2011-2013: Mobile Store Merchandise System on a Handheld, Technologies: Java/Spring, Tasks: Functional+Technical Specification, Development // 2005-2013: Store Merchandise and Logistic System, Technologies: Oracle PL/SQL, Forms, Reports, Tasks: System Architecture&Integration, Functional + Technical Specification, Development, Code Review, Performance Tuning, International Rollout, Project Coordination
2 Jahre und 9 Monate, Jan. 2003 - Sep. 2005
Application Engineer
METRO SYSTEMS GmbH
Implementation of a Job Scheduling for batch processing using the Tivoli Workload Scheduler for an inhouse developed and international used centralized Oracle based Merchandise Management System.
1 Jahr und 10 Monate, Feb. 2001 - Nov. 2002
Developer / System Administrator
brainwire GmbH
Development Community Solutions (PHP, MySQL) + System Administration (Linux)
3 Jahre und 6 Monate, Aug. 1997 - Jan. 2001
Apprentice
BASF Schwarzheide GmbH
Sprachen
Englisch
Fließend
Deutsch
Muttersprache
Russisch
Grundlagen