Hello,
I think I will be a good fit for you, on this. I have developed microservice in Java, using AWS-SQS (instead of Apache Kafka), but I understand how event based microservices work. I can support such a system, make required changes to it if needed.
I will be happy to get into a call with you and explain better.
Cheers,
Rohitesh
P.S. Given the nature of the requirement, the bid amount can change based on the specifics. We can discuss and finalize this over a call.