Kafka migration to a new kafka archecture, update and modernisation of Spring Boot and Java code in microservices and monolith, update Kafka and MirrorMaker2 configurations.

Migration from Hadoop to DataBricks for analytics. New Kafka configurations for new feeds, cleanup of old feeds, code cleanup and modernisation.

Architect, design and develop a high volume, low-latency connector between a cloud-based Volue DeltaXE instance and EnBW on-premises backend systems (Endur, EV) / EnBW cloud-based systems (Trayport autoTRADER, Exxeta, EMSys VPP for renewables).

Java / Python under AWS API Gateway / AWS Lambda to provide scalable microservices. Testing used JUnit / Mockito / Awaitability / s3mock.

KRITIS-relevant systems.

Architect, design and develop systems for the automation of software quality assurance.

Java : REST API - Used AWS components (APIGateway, Lambda, DynamoDB, LoadBalancer, EC2, S3, VPC, VPC Endpoints, IAM, SecretsManager, Cloudwatch Logs/Metrics/Events, SNS). CD/CD using GitLab CI/CD, automated unit/system/load tests using JUnit / Awaitability / Cucumber, deployment using Terraform, security, network configuration aspects, cost optimisation, performance optimisation and operations procedures were part of the deliverable, including an OpenResty/NGINX reverse proxy which could re-sign AWS requests.