07.07.2026 aktualisiert
Premiumkunde
100 % verfügbarSENIOR SOFTWARE ENGINEER / Backend, Business Engineering und Architect
Karlsruhe, Deutschland
Deutschland
Dr.-Ing. InformaticsSkills
Clean ArchitectureDDDGCPChatGPTClean CodeSAP CloudHTMLJavaJavaScriptAPIsAgile MethodologieAndroidHTML5CSSCloud Computing
Note: Reduced content - details in attached documents
Dr. Jens Lemcke is a Senior Software Engineer & Architect with 10+ years of experience spanning enterprise software (SAP), fintech, and modern cloud-native development.
Core Backend Skills: Java, Spring/Spring Boot, PostgreSQL, REST API, OpenAPI (expert level); Kotlin, JPA, gRPC, RabbitMQ, IDoc, EDIFACT, jOOQ (advanced).
Software Quality: Clean Architecture, Scrum, OOP, JUnit, TDD (expert); Clean Code, SonarQube (advanced); DDD, BDD, Contract Testing/PACT (proficient).
Frontend: Android, HTML, Java REST (expert); TypeScript, JavaScript, Kotlin (advanced); CSS, Angular, Thymeleaf, JavaFX (proficient).
DevOps/Cloud: CI/CD, Docker, Google Cloud Platform, GitLab, Jenkins (advanced); SAP HANA Cloud, AWS, GitHub, Azure, Kubernetes (proficient).
Key Professional Experience:
At PowMio GmbH (2020–present), he leads development of a financial markets backtesting/trading system — building custom indicators, integrating Interactive Brokers APIs, and designing event-driven pipelines (NinjaTrader → Cloud → Discord → automated orders). He also serves as cross-project integration expert for a rail-sector energy market communication overhaul (EDIFACT, DDD, GPKE compliance), and has delivered AI prototypes using the OpenAI API (multi-agent game logic, location-based recommendations). Other PowMio projects include microservice architecture for medical supply e-commerce (Spring Boot, RabbitMQ, GCP), gRPC/REST API modernization for telephony systems, chatbot SDK development (Kotlin/Xenioo), and Clean Architecture-based frontend/backend modernizations.
At SAP SE (2004–2020), he was Development Architect for the SAP Cloud Platform Integration Advisor, owning the mapping component architecture and leading IDoc/SOAP/OData migration. He also architected an offline-capable Android app for agricultural data collection (SAP Rural Sourcing Management), earning an SAP award for the Barry Callebaut project. Earlier, as a researcher, he led international Semantic Web and e-mobility projects (DIP, FUSION, MOST, iGreen), collaborating with Stanford's Logic Group and developing EV charging algorithms for SAP's vehicle fleet.
Education: Dr. rer. pol., Universität Karlsruhe (data/process integration, semantic technologies); Diplom-Informatiker, Universität Rostock (modeling/simulation, data mining).
Notable achievements: 16 granted patents in semantic data integration and business process modeling; author of 1 book, 3 journal articles, 7 book chapters, and 25+ conference/technical publications; supervised doctoral and thesis students; fluent in English, native German.
His profile combines deep enterprise architecture expertise (SAP, B2B integration standards) with hands-on modern engineering practice across microservices, cloud platforms, mobile development, and emerging AI-driven applications — consistently in technical leadership and mentoring roles.
Erfahrung
Berufserfahrungmehr als 10 Jahre
Freelancer seit2020
Sprachen
DeutschMutterspracheEnglischMutterspracheRussischGrundkenntnisseSpanischGrundkenntnisse