Oliver James Associates
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Oliver James is partnering with a leading enterprise organization migrating its core legacy systems from Adabas (Mainframe) to PostgreSQL.
Find out more about this role by reading the information below, then apply to be considered.
We are seeking a Data Functional Analyst to bridge the gap between legacy business logic and modern database architecture. Working directly alongside Data Engineers and DBAs, you will define data mappings and ensure a seamless, high-integrity migration.
Legacy Data Analysis & Mapping: Deep-dive into Mainframe data structures and define accurate functional target mappings to PostgreSQL relational schemaq
Technical & Functional Guidance: Act as the primary functional advisor for Data Engineers and DBAs, writing clear functional specifications to guide ETL/ELT pipeline development and schema design
Data Quality & Reconciliation: Design data validation strategies, define test scenarios, and execute cross-database reconciliation checks (Mainframe legacy vs. PostgreSQL) to guarantee 100% data integrity and consistency
Data Lineage & Documentation: Maintain comprehensive data dictionaries, mapping rulebooks, and lineage documentation throughout the migration lifecycle
Serve as the functional point of contact for resolving legacy data ambiguities and translating complex business rules for the technical delivery team
Functional Data Expertise: 3 years of experience as a Data Functional Analyst, Business Data Analyst, or Data Consultant on large-scale data transformation projects
Database & SQL Skills: Strong, mandatory expertise in PostgreSQL and advanced proficiency in SQL and relational data modelling concepts
Mainframe Experience: xlxgzvr Solid functional understanding of Mainframe database environments (knowledge of Adabas is nice to have, but not mandatory)
Hands-on experience working on complex legacy-to-relational data migration projects
Language skills
Fluent English (written and spoken)
Professional fluency in French and/or Dutch (essential for local team and business stakeholder collaboration)
Excellent analytical skills, rigorous attention to detail, and the ability to articulate complex functional rules clearly to technical teams
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