adam.hamburg – Professional Journey

Professional Journey

I began my professional journey in 2013 as an Oracle E-Business Suite and database developer. Over time, my work expanded into Java and Python development, cloud migration, and architecture.

My experience includes work as a Research Associate at TUHH and integration, software, and cloud architecture roles with organizations including EDEKA, CHEFS CULINAR, BMW Group, and MediaMarktSaturn. I have also worked as an AWS trainer and coach, and as a Cloud Architect / Lead Developer and DevOp / Coach for Mercedes-Benz.

Across 16 client organizations, my projects span automotive, retail and e-commerce, rail and logistics, food service, environmental services, biometrics and public-sector systems, finance, telecommunications, and HR/payroll.

The timeline below provides a chronological overview of these roles and projects. Entries marked Featured project link to a dedicated case study; other entries remain part of the professional timeline without a separate project page.

01/2023 - 08/2024

Featured project

Cloud Architect / Lead Developer & DevOps Coach

Mercedes-Benz

Designed and developed an AWS platform for testing different types of electronic control units (ECUs), supporting quality assurance while reducing reliance on hardware-specific testing.

Challenge

Creating a robust and scalable platform for ECU testing to improve quality assurance and minimize hardware-specific tests.

Solution

Designed the foundational AWS architecture and developed backend microservices, primarily in Python. Built shared libraries including an OAuth token flow to support backend and frontend integrations; the platform passed a security audit.

AWS ECS AWS Lambda AWS Chalice AWS Dynamodb AWS App Runner AWS VPC AWS SQS AWS EC2 Image Builder AWS SNS AWS IAM AWS CDK Docker Python TypeScript Apache Camel Java Maven Kotlin C# GitLab IntelliJ PyCharm WebStorm RIDER Swagger

Read the case study

09/2022 - 10/2022

Featured project

AWS Trainer / Coach

Academic Work Germany

Planned and conducted a five-week AWS training course to prepare 16 consultants for AWS certification.

Challenge

Effectively conveying complex AWS concepts within a limited time frame.

Solution

Developed a comprehensive curriculum with theoretical and practical components, including mini-projects.

Python AWS EC2 AWS CloudTrail AWS Config AWS Lambda AWS VPC AWS CodeCommit AWS Dynamodb AWS CloudWatch AWS IAM AWS SNS AWS SQS AWS SES AWS CloudFormation AWS Elastic Beanstalk Git

Read the case study

07/2022 - 12/2022

Featured project

Backend Developer / DevOps

VTG Rail Europe GmbH

Provided consulting and development services for the maintenance and further development of the traigo.com platform.

Challenge

Expanding platform functionalities and ensuring operational stability in an AWS environment.

Solution

Implemented customer use cases with IoT and serverless approaches, designed APIs, and improved infrastructure provisioning with Infrastructure as Code (Terraform).

Kotlin PostgreSQL GitHub Gradle DataDog IntelliJ PyCharm Git Kubernetes AWS SNS AWS SQS AWS S3 AWS Athena AWS EKS AWS RDS AWS Lambda AWS Dynamodb Spring Maven Docker Terraform Swagger

Read the case study

12/2021 - 07/2022

Software Architect / DevOps / Fullstack

MediaMarktSaturn

Architected and implemented a centralized master data application for managing complex procurement contracts and purchasing conditions within a GCP cloud ecosystem.

Challenge

Establishing a single point of truth for contract data across heterogeneous internal and third-party systems while ensuring high data consistency.

Solution

Designed technical evolution concepts for the Contract Master, realized a 'Single Point of Truth' API, and harmonized application integration by modern REST endpoints.

AWS EKS Kotlin PostgreSQL GitHub Gradle Kibana Grafana IntelliJ Kubernetes GCP GCP Cloud Storage GCP PubSub Helm Docker TypeScript Swagger

05/2021 - 12/2021

Software Architect / Software Developer

BMW Group

Architected and enhanced global backend microservices for the My BMW App, processing high-volume user interactions and vehicle events across international markets.

Challenge

Scaling and optimizing remote and speech backend services while ensuring high availability across EMEA, US, and China.

Solution

Designed technical concepts for cloud evolution, optimized the service mesh architecture in AWS using EKS and ECS, and executed global production deployments.

Java Java EE Mockito Jenkins Maven JPA Kibana Grafana IntelliJ Git Joynr Kubernetes AWS ECS AWS EKS AWS ECR AWS RDS AWS SNS AWS SQS Redis PostgreSQL

02/2021 - 05/2021

Integration Architect / Software Developer

CHEFS CULINAR

Architected and implemented a robust master data integration layer to synchronize a new Aurea CRM system with existing SAP landscapes and order management system.

Challenge

Standardizing heterogeneous data structures and ensuring real-time bidirectional synchronization between legacy systems, SAP and Aurea CRM.

Solution

Consulted on data normalization, built a Change Data Capture (CDC) logic for event-driven synchronization, and implemented high-performance integration routes using Talend.

Adabas Teradata Talend Talend ESB Postman Java XSLT XML SQL PL/SQL Oracle Oracle Apex Citrus Jenkins Maven Kibana IntelliJ Git Swagger

04/2020 - 05/2021

Integration Architect / Software Developer

CHEFS CULINAR

Architected and implemented a large-scale data integration layer for a company-wide SAP migration, modernizing legacy ERP (Adabas) connectivity.

Challenge

Standardizing heterogeneous data structures and designing a scalable domain model for complex transaction data.

Solution

Consulted on data normalization, designed the API landscape using Swagger, and developed high-performance ETL jobs and real-time routes using Talend ESB.

Adabas Talend Talend ESB Postman Swagger Java XSLT XML SQL PL/SQL Oracle Apex Citrus Jenkins Maven Kibana IntelliJ Git Subversion

01/2020 - 03/2020

System Analyst / Software Architect

DERMALOG

Architected and implemented a high-security government interface for biometric verification, enabling official agencies and financial institutions to cross-reference biometric and demographic data.

Challenge

Designing a secure public API while orchestrating complex backend processes within a Master Data Management system.

Solution

Developed generic data models and mapping logic for the REST API, refactored process control within the MDM system, and led successful Factory Acceptance Testing (FAT).

Oracle 12g Java EE JPA PL/SQL SQL utPLSQL Spring SQL Developer Git XML XSLT XSD REST Swagger IntelliJ DataGrip

01/2020 - 03/2020

Cloud Architect / Software Developer

EDEKA DIGITAL

Architected and implemented a high-performance, serverless microservice for the market search functionality on edeka.de, while establishing modern CI/CD practices.

Challenge

Designing a scalable search interface within a complex microservice landscape and upskilling the internal team on AWS best practices.

Solution

Designed the REST API, defined the infrastructure as code using AWS CloudFormation, and implemented cost-effective serverless logic with AWS Lambda.

TypeScript AWS Lambda AWS CodeBuild AWS CloudFormation AWS SQS AWS SNS AWS S3 AWS ECS Citrus ElasticSearch Kibana Localstack Serverless PostgreSQL PyCharm

12/2018 - 12/2019

System Analyst / Software Architect

DERMALOG

Led performance optimization and refactoring of a time-critical biometric data processing system for instant personal identification card issuance, followed by the design of a high-availability verification interface.

Challenge

Improving system throughput for real-time processing and resolving complex bugs in production-near environments.

Solution

Implemented technical measures to increase throughput, refactored the business layer core system, and designed a highly available public API for biometric verification.

Oracle 12g Java EE PL/SQL SQL utPLSQL Spring SQL Developer Git XML XSLT XSD HTML Oracle Apex REST DataGrip

11/2018 - 11/2018

Java Developer / Talend Developer

Veolia Umweltservice

Architected and realized a cloud-native ETL framework for a company-wide Data Lake, enabling unified reporting and advanced business intelligence.

Challenge

Harmonizing legacy data models and implementing real-time data synchronization between on-premise systems and the cloud.

Solution

Designed complex ETL jobs in Java/Talend, established a Change Data Capture (CDC) pipeline using AWS DMS, and optimized data loading into GCP BigQuery for high-performance analytics.

Oracle 11g Talend PL/SQL SQL Java EE AWS DMS GCP Datastudio GCP BigQuery GCP Cloud Storage

10/2018 - 11/2018

Python Developer

Veolia Umweltservice

Developed and deployed a generic serverless monitoring client to provide real-time AWS service health notifications directly to a Telegram Bot.

Challenge

Establishing an efficient, low-maintenance monitoring solution for distributed AWS environments with instant alerting capabilities.

Solution

Implemented a cost-effective Function as a Service (FaaS) using AWS Lambda and SNS, while conducting workshops to train the internal team on serverless architecture patterns.

AWS CodeCommit AWS SQS AWS SNS AWS Lambda AWS CloudWatch Serverless Python Git

04/2018 - 10/2018

Java Developer

Veolia Umweltservice

Developed and implemented a bidirectional REST API layer for a centralized customer portal, enabling seamless data flow between frontend and backend systems.

Challenge

Modernizing legacy application integration by refactoring existing interfaces and extending complex business domain models.

Solution

Converted interfaces to standardized JSON REST endpoints, while expanding the CI/CD pipeline using Maven, Jenkins, Nexus, and various AWS Developer tools.

Oracle 11g AWS CodeCommit AWS SQS AWS SNS AWS CloudFormation AWS Lambda AWS CloudWatch Java EE PL/SQL SQL Spring Apache Camel Junit JPA Git

01/2018 - 11/2018

Cloud Migration Lead / Java Dev

Veolia Umweltservice

Served as Solution Leader for a company-wide Move-to-Cloud strategy, coordinating the migration of complex custom and standard software solutions to AWS and GCP.

Challenge

Defining tailored migration paths (Rebuild, Rehost, Redeploy) for a diverse application landscape while ensuring seamless business continuity.

Solution

Drafted comprehensive technical specifications, harmonized application integration by refactoring legacy interfaces into modern REST endpoints (JSON), and oversaw the end-to-end migration process.

Oracle 11g Talend Talend ESB AWS DMS AWS CodeCommit AWS Elastic Beanstalk AWS RDS AWS CloudFormation AWS Lambda Serverless SQL PL/SQL Java EE

01/2018 - 03/2018

Java Developer

Veolia Umweltservice

Redesigned a legacy interface layer to a modern REST API for seamless document retrieval and submission to a new Document Management System (DMS).

Challenge

Bridging communication gaps between the central order management system and the new DMS while modernizing the interface architecture.

Solution

Analyzed cross-system interface requirements and implemented production-ready REST DSL endpoints using Apache Camel routes within a Talend ESB environment.

Oracle 11g Talend ESB AWS CloudFormation AWS EC2 Java EE Maven Nexus

08/2016 - 12/2017

Java Developer

Veolia Umweltservice

Led the architectural design and realization of a company-wide Data Warehouse, evaluating and introducing modern cloud technologies for high-scale business reporting.

Challenge

Harmonizing heterogeneous legacy databases and establishing a reliable real-time data ingestion pipeline into a cloud-native platform.

Solution

Engineered a scalable ETL framework using Talend and BigQuery, established a logical mirror database for CDC via AWS DMS, and coordinated the development team through complex business object mappings.

Oracle 11g SQL Developer Talend SQL PL/SQL AWS DMS AWS CLI Git GCP BigQuery

01/2016 - 08/2016

Oracle Database Developer

Veolia Umweltservice

Architected and implemented a nationwide telematics solution for paperless order processing, bridging the gap between central logistics and mobile field devices.

Challenge

Transitioning from manual paper-based processes to a real-time electronic document exchange across a distributed national fleet.

Solution

Redesigned the core Oracle Forms and Reports application for automated document generation, refactored interface layers for mobile synchronization, and provided technical decision support for the overall architecture.

Oracle 11g Oracle Forms Oracle Reports SQL PL/SQL Java EE AWS CodeCommit Git

02/2015 - 07/2015

EBS Developer / Consultant

KGAL

Provided expert technical and functional consulting for a company-wide implementation of the Oracle E-Business Suite, ensuring seamless integration across the enterprise landscape.

Challenge

Bridging the gap between complex business requirements and technical feasibility while designing a robust application architecture.

Solution

Drafted high-level integration concepts, conducted detailed feasibility analyses (PoCs), and served as the primary technical point of contact for interface design and application architecture.

Oracle 11g SQL Developer SQL PL/SQL Java EE Oracle BI E-Business Suite Oracle Forms WebADI

01/2015 - 02/2015

EBS Developer / Database Developer

Hofmeister & Meinke

Developed a critical high-volume price interface for the Advanced Pricing module within the Oracle E-Business Suite, facilitating automated mass updates of price lists and modifiers.

Challenge

Managing complex mass data updates while maintaining system integrity and providing specialized reporting for business departments.

Solution

Led analysis workshops with stakeholders, implemented core interface logic in PL/SQL, and developed custom price list reporting using Oracle BI and WebADI.

Oracle 12g SQL PL/SQL Oracle BI WebADI E-Business Suite SQL Developer

11/2014 - 12/2014

EBS Developer / Database Developer

Duales System Deutschland

Developed specialized ERP integration layers for a leading European circular economy provider to facilitate transaction data capture during a complex tenant takeover.

Challenge

Migrating and synchronizing critical Accounts Payable (AP) and Accounts Receivable (AR) transaction data while maintaining active business operations.

Solution

Engineered a technical design for seamless tenant integration, implemented robust ETL processes in PL/SQL for data migration, and led successful production go-live activities.

Oracle 12g PL/SQL SQL E-Business Suite SQL Developer

08/2014 - 11/2014

EBS Developer / Database Developer

Praxair

Developed and executed complex ETL processes for a major ERP re-implementation, specializing in the migration of high-value asset data.

Challenge

Ensuring the precision and integrity of master data migration into the Fixed Assets (FA) module of the Oracle E-Business Suite.

Solution

Implemented robust data transformation routines in PL/SQL and successfully managed the end-to-end data migration into the production environment.

Oracle 12g SQL Developer SQL PL/SQL E-Business Suite

07/2014 - 08/2014

EBS Developer / Database Developer

Primacom

Developed and executed critical ETL processes for a leading German cable network provider to facilitate data migration during a major tenant acquisition.

Challenge

Synchronizing and cleansing complex transaction and master data for Accounts Payable (AP) and Fixed Assets (FA) modules under tight deadlines.

Solution

Implemented robust PL/SQL transformation routines, developed Java-based extraction and data cleansing tools, and managed the end-to-end migration into the live environment.

Oracle 12g SQL Developer SQL PL/SQL E-Business Suite

02/2014 - 06/2014

Java Developer

myToys

Optimized the software development lifecycle by designing and implementing a robust Continuous Integration (CI) environment, significantly reducing build times and manual errors.

Challenge

Refactoring a complex legacy Java EE project to support modular builds and automated testing within an enterprise E-Business Suite landscape.

Solution

Engineered a standardized build process using Maven, established a centralized artifact repository with Nexus, and configured automated deployment pipelines in Jenkins, while training the internal development team on modern DevOps practices.

Oracle 11g Java EE Arquillian Weblogic Tomcat Maven Nexus Jenkins E-Business Suite

01/2014 - 02/2014

Java Developer

myToys

Developed and modularized a specialized mobile web application for Motorola MC-series handheld scanners, optimizing warehouse operations for a leading toy retailer.

Challenge

Transitioning a monolithic JSP-based frontend into a modular, internationalized (i18n) architecture suitable for legacy mobile hardware.

Solution

Implemented a template-based frontend logic, refactored the Java EE core, and centralized CSS styling to improve maintainability and device compatibility.

Oracle 11g PL/SQL SQL Developer Java EE JSP Weblogic Tomcat Subversion E-Business Suite

12/2013 - 01/2014

EBS Developer / Database Developer / Java Developer

Hofmeister & Meinke

Developed and executed comprehensive ETL processes for a major ERP re-implementation, ensuring the seamless transition of creditor and master data.

Challenge

Migrating complex financial and creditor datasets into a new Oracle E-Business Suite instance while ensuring data quality and integrity.

Solution

Designed the ETL architecture, implemented high-performance PL/SQL transformation routines, and developed custom Java-based data cleansing and extraction tools for production migration.

Oracle 11g PL/SQL Java SE Weblogic SQL Developer E-Business Suite WebADI

10/2013 - 12/2013

EBS Developer / Database Developer

myToys

Architected and implemented an automated inventory withdrawal system for a leading retail company to minimize manual intervention and optimize warehouse logistics.

Challenge

Reducing operational overhead by replacing manual inventory identification and logistics processing with a reliable, highly parameterizable background system.

Solution

Designed a complex data model for filtering rules, programmed custom Oracle Forms for rule management, and implemented high-performance PL/SQL background programs for periodic processing.

Oracle 11g PL/SQL E-Business Suite SQL Developer SQL Oracle Forms

09/2013 - 10/2013

EBS Developer / Database Developer

Primacom

Designed and realized a generic interface for integrating supplementary SEPA payment information within the Oracle E-Business Suite for a major German cable network provider.

Challenge

Ensuring regulatory SEPA compliance by extracting and transforming complex existing bank account datasets into a new standardized data model.

Solution

Engineered SQL-based extraction and staging models, developed custom WebADI templates for end-user data maintenance, and provided comprehensive user training for the new migration tools.

Oracle 12g PL/SQL SQL Developer Weblogic E-Business Suite WebADI Oracle BI

06/2013 - 09/2013

EBS Developer / Database Developer

ADP

Developed specialized ERP extension interfaces for one of the world's leading payroll and human resources services providers, focusing on financial data migration and operational efficiency.

Challenge

Simplifying and automating the migration of complex transaction data, including invoices and financial records, for the AP (Payables) and AR (Receivables) modules.

Solution

Conceptualized and implemented a high-performance data migration solution using Oracle WebADI, engineered robust data models and staging structures, and conducted end-user training sessions.

Oracle 11g SQL PL/SQL Java SE Weblogic E-Business Suite WebADI Oracle BI

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