Solution Architect - OLTP Data Modeling (Telecom/Wireless) | Onsite - St. Louis | 6 Months

About the role

Genius Business Solutions Inc. (GBSI) is a globally recognized IT services leader featured in CNBC, Digital Journal, Fox News, and CIO Review, with 20+ years serving Fortune 500 organizations across automotive, manufacturing, retail, and pharmaceutical industries. Headquartered in Moline, IL, GBSI supports clients and consultants throughout the US, Canada, Europe, and India. We are seeking an experienced Solution Architect with deep expertise in OLTP Data Modeling and Data Architecture within the Telecom/Wireless industry. This role requires a hands-on architect capable of designing and governing highly normalized transactional databases that support customer-facing mobile applications, subscriber management systems, product catalogs, order management, and activation workflows. The ideal candidate will have strong experience with Erwin Data Modeler, Oracle Database, PL/SQL, and Python, along with a proven track record of architecting scalable, high-volume transactional systems in a telecom environment. Note: This is an OLTP-focused role. Candidates with primary experience in Data Warehousing, BI, Analytics Engineering, Reporting, or ETL/ELT development will not be considered.

Responsibilities

• Data Architecture & Modeling: Translate business requirements into conceptual, logical, and physical data models.
• Design and maintain highly normalized (3NF) enterprise data models.
• Create conceptual Entity Relationship Diagrams (ERDs) and logical data models.
• Establish and govern business data definitions, standards, and naming conventions.
• Oracle Database Design: Design Oracle physical schemas, including tables and columns, primary and foreign keys, indexing strategies, constraints and sequences, partitioning structures; ensure database scalability, integrity, and performance.
• Erwin Data Modeling: Develop and maintain enterprise data models using Erwin Data Modeler; manage model versioning through Erwin Mart; perform forward and reverse engineering; utilize Complete Compare to identify and resolve schema differences; maintain naming standards, domains, and model governance.
• PL/SQL Development & Performance Tuning: Develop and optimize complex PL/SQL code; analyze execution plans and identify performance bottlenecks; optimize indexing strategies and database queries; troubleshoot locking, contention, and concurrency issues in high-volume transactional environments.
• Data Governance & Quality: Define data modeling standards, governance procedures, and review processes; develop data dictionaries and impact analysis documentation; establish controls for data quality, consistency, completeness, and integrity; ensure compliance with security and privacy requirements.
• Python Automation: Develop automation tools for model validation, metadata extraction, schema compliance checks, data profiling, deployment support.

Requirements

• 10+ years of Data Architecture and Data Modeling experience.
• Majority of experience focused on OLTP/transactional systems.
• Strong hands-on expertise with Erwin Data Modeler, Oracle Database, Advanced PL/SQL Development, Python.
• Expert understanding of 3NF data modeling and normalization, logical and physical data modeling, database performance tuning, data governance practices.
• Ability to work directly with business stakeholders and translate requirements into technical solutions.
• Telecom/Wireless Domain Experience (Mandatory): hands‑on experience in one or more of the following areas: