I have worked as Senior Software Engineer in one of the top 10 Big data companies.
I have worked mostly on backend systems -
1) CRUD APIs with custom business logic supporting >10K TPS.
2) Platform supporting 1000s of ML Spark Big data jobs.
3) Mobile App backend supporting high volume ingestion, business logic and ML models in real time and batch jobs.
4) Building and tuning a search experience on top of a data catalog, restructuring ES queries, applying ML through ML modelling.
My primary language of development is java + javascript.