The Specialist position is rarely selected and should only be considered after all other levels have been exhausted.
The Specialist position is considered an expert position that has a comprehensive and authoritative knowledge of or unique skillset in a particular area.
A data scientist (big data engineer) is someone who makes value out of data.
Such a person proactively fetches information from various sources and analyzes it for better understanding about how the business performs and builds AI tools that automate certain processes within the company.
Data engineer needed for Fraud Analytics roadmap implementation, including standing up new data engineering practices and supporting data analysts and data scientists.