Solution Architect – OLTP Data Modeling

• Job Title: Solution Architect – OLTP Data Modeling
• Location: St. Louis, MO
• Work Arrangement: Onsite (4 days/week, No Remote Option)
• Experience Required: 10+ Years
• Primary Skills: Erwin Data Modeler, Oracle, PL/SQL, Python, OLTP Data Modeling, Telecom/Wireless Domain

Looking for: A hands-on Solution Architect who can gather business requirements, design enterprise-grade OLTP data models, implement Oracle database solutions, and optimize transactional systems within a Telecom/Wireless environment.

• Position Overview
• 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.
• Key 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
• Required Qualifications
• 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)
• Candidates should possess hands-on experience in one or more of the following areas:
• Subscriber and account lifecycle management
• Multi-line and hierarchical account structures
• Product catalogs, rate plans, and offers
• Features, entitlements, compatibility, and eligibility rules
• Order management, activation, and provisioning workflows
• Device and equipment management
• Device financing and installment plans
• Mobile subscriber identifiers:
• MSISDN
• IMSI
• ICCID/SIM
• IMEI
• Number portability (Port-In/Port-Out)
• Telecom BSS/OSS ecosystems
• Must-Have Skills
• OLTP Data Modeling
• Data Architecture
• Erwin Data Modeler
• Oracle Database
• Advanced PL/SQL
• Database Performance Tuning
• Python Automation
• Telecom/Wireless Domain Experience
• Data Governance & Standards