Intratek Computer, Inc., an Irvine, California based company, was founded and incorporated in 1989 as a computer service, support, and networking firm to provide state-of-the-art customized information technology solutions for Federal, State and County agencies, as well as leading private commercial accounts. We have comprehensive experience providing IT support services, including hardware and software support, maintenance and repair, programming, professional staffing, networking, web design and development, and helpdesk implementation and management. Intratek Computer, Inc. is looking for a Senior Data Warehouse Developer/Architect to support us in Orange, CA. We offer great benefits and everyone has a stake in our success. Pay Rate DOE, W2 per hour Onsite/Remote/Hybrid: Hybrid (subject to change) Medical benefits Paid vacation Paid holidays 401K Position Summary We are seeking a mission-driven ETL Developer with strong proficiency in Informatica, Oracle, SQL Server, Unix shell scripting, and essential database skills to support the data needs of a Public Transit Authority. In this role, you will play a pivotal part in integrating and managing data across transit scheduling platforms, ridership and automated vehicle location (AVL) systems, fare collection systems, and dashboards. Your work will directly influence operational efficiency, real-time decision making, service planning, and federal/state regulatory compliance. Key Responsibilities Transit-Focused ETL Development Design and implement scalable ETL processes using Informatica PowerCenter to integrate data from: Oracle-based scheduling systems (e.g., Rider Validation System (RVS), Trapeze, Enterprise Asset Management (EAM), Hastus, Workday). SQL Server-based fare collection and CRM systems. Real-time feeds from AVL, APC (Automated Passenger Counting), and GTFS. Data Transformation & Integration Translate operational and planning requirements into robust data pipelines for use in: Ridership analysis, schedule adherence, and on-time performance reporting. Federal Transit Administration (FTA) reports (e.g., NTD data submissions). Multimodal service integration (e.g., bus, rail, paratransit, microtransit). Data Quality, Performance, & Production Support Ensure data integrity through validation, error handling, and quality control measures. Optimize ETL performance to support daily service planning and real-time alerting (e.g., delays, detours, overloads). Automation & Scheduling Automate recurring jobs aligned with service schedules, maintenance windows, and operational SLAs. Monitor and troubleshoot workflows to minimize disruption to critical services. Required Qualifications Technical Skills 10+ years of ETL development experience using Informatica PowerCenter. Advanced proficiency in SQL, PL/SQL (Oracle), and T-SQL (SQL Server). Experience in Unix shell scripting, preferred to have python programming experience. Strong background in database concepts, including data modeling, indexing, normalization/denormalization, and performance tuning. Expertise writing advanced SQL—including joins, subqueries, window functions, and CTEs—for efficient transformation and retrieval. Proven ability to manage and document complex ETL jobs, ideally involving: Transit data feeds (e.g., GTFS/GTFS-realtime) Real-time monitoring systems Data warehousing platforms Database Management & Performance Design and maintain stored procedures, functions, and triggers in Oracle and SQL Server. Skilled in query optimization, indexing strategies, partitions, and bulk load operations to support high-volume ETL loads. Experience with database performance monitoring, backup/recovery, and troubleshooting ETL-related issues. Strong background in Data warehousing concepts such as dimensional modelling and Kimball architecture. Domain Experience Strong understanding of public transportation systems, scheduling software, and service planning cycles. Familiarity with performance metrics like on-time performance, headway adherence, mean distance between failures, and passenger load factors. Ideal Candidate Attributes Education & Certification Bachelor's degree in Computer Science, Data Engineering, Transportation Systems, or related field. Informatica Developer certification and/or Oracle certifications preferred. Soft Skills Strong communication skills with the ability to collaborate with service planners, operations staff, and public information officers. Highly organized, analytical, and committed to public service impact through data transparency and efficiency. Preferred Experience Knowledge of transit planning tools (e.g., Remix, Swiftly, OrdCAD). IDMC and cloud databases such as Azure or Snowflake. Preferred to have Informatica 10.x and IDMC Administration experience. Data Catalog or MDM experience. Familiarity with cloud integration platforms, data lakes, or real-time analytics tools. Experience with ArcGIS or GIS-integrated transit analysis. Equal Opportunity Employer: Intratek Computer Inc. is an equal opportunity employer. "All qualified applicants will receive consideration for employment without regard to their race, religion, ancestry, national origin, sex, sexual orientation, age, disability, marital status, domestic partner status, or medical condition." Veterans Preference: Special preference will be given returning war veterans when hiring new employees in an attempt to recognize their service, sacrifice, and skills Job Type: Contract Pay: Up to $83.00 per hour Benefits: Health insurance Paid time off Schedule: Monday to Friday Work Location: In person