Informix Developer Jobs in California (NOW HIRING)

Job Summary:
Skechers, a global Fortune 500® company, develops and markets a diverse range of lifestyle and performance footwear, apparel, and accessories. They are seeking a Retail Systems Engineer to lead the engineering, development, and enhancement of retail corporate systems, focusing on o9 Solutions and Aptos Merchandising, and to translate business requirements into technical solutions.
Responsibilities:
• Design, develop, and implement custom plugins and extensions for retail corporate systems.
• Create custom applications, scripts, and automation tools to enhance system functionality and user experience.
• Implement advanced system configurations, customizations, and performance optimizations.
• Support and manage ETL processes, data pipelines, and system interfaces.
• Support the migration from the legacy Apropos retail backoffice system (Informix/4GL) to Aptos Merchandising, including data migration, integration re-platforming, and cutover activities.
• Lead technical proof-of-concept projects and pilot implementations to showcase new ideas.
• Collaborate with enterprise architects on system design and technology roadmaps.
• Develop and maintain advanced SQL queries for data extraction and analysis.
• Ability to work with and extract data from legacy Informix databases as part of migration and reconciliation efforts.
• Create automated data validation, quality monitoring, and performance tracking processes.
• Troubleshoot system issues, data discrepancies, and integration problems across both legacy Apropos and new Aptos Merchandising environments during transition.
• Ability to identify any design issues in the existing setup and solve the business problem by providing break fixes.
• Perform system performance tuning, monitoring, and optimization.
• Manage technical debt, platform upgrades, and ensure compatibility with vendor-driven releases.
• Ability to review release notes, identify functional and technical impacts and support testing and business readiness activities.
• Document technical specifications and system designs relating to retail corporate systems.
• Work closely with business stakeholders to translate business requirements into technical specifications.
• Participate in legacy-to-modern system migration planning, including business process mapping from Apropos to Aptos Merchandising.
• Coordinate with offshore development teams, vendors and cross-functional stakeholders.
• Participate in Agile development processes, sprint planning, and technical reviews.
• Maintain flexible work schedule including on-call availability during evenings and weekends as needed.
• Ability to work effectively across multiple time zones (Pacific Time Zone primary) with global teams.
Qualifications:
Required:
• Bachelor's degree in Computer Science, Engineering, Information Systems, Supply Chain Management, Industrial Engineering, or related technical field required.
• 8+ years of experience in Retail IT in Engineering/Technical position.
• 3+ years of experience with retail planning systems (o9 Solutions preferred).
• 2+ years of experience with a retail merchandising system (Aptos Merchandising preferred) OR demonstrated willingness and ability to learn.
• Strong foundation in one system with proven ability to learn new enterprise systems.
• Experience with Agile development methodologies.
Preferred:
• Familiarity with legacy retail systems (Apropos, Informix, or 4GL) is a plus but not required.
• Experience supporting or implementing knowledge graph-based supply chain planning solutions.
• Experience configuring o9 platform based on custom requirements including reports, action buttons, procedures and plugins.
• Ability to convert business logic to technical platform design, including knowledge of platform infrastructure.
• Experience in performance tuning o9 configuration and resolving customer issues to ensure solution usability and uptime.
• Knowledge of o9 platform's data model (table structures, linkages, optimal designs) for designing various merchandising use cases.
• Experience in o9 SDK and development frameworks.
• Knowledge of o9 Integration framework (Integration 3.0 framework preferred).
• Knowledge of implementing ETL solutions and designing integration flows between system endpoints and o9 platform.
• Familiarity with or ability to learn legacy retail backoffice systems, specifically Apropos running on Informix with 4GL code.
• Understanding of legacy-to-modern system migration strategies, data mapping, and business process re-engineering.
• Ability to analyze and document existing Apropos business logic written in 4GL for re-implementation in Aptos Merchandising.
• Experience with Informix database querying and data extraction to support migration validation and reconciliation.
• Foundational knowledge of Aptos Merchandising concepts: environments, configuration, access control, logging, and monitoring.
• Experience with Aptos release management and change governance processes.
• Ability to learn Aptos Merchandising data relationships (items, suppliers, locations, inventory, cost, and financials).
• Ability to learn Aptos database concepts (tables, views, indexes).
• Strong SQL skills for data analysis, reconciliation, and issue resolution.
• Experience with batch job processing, monitoring, and troubleshooting in Aptos environments.
• Familiarity with scheduler/batch frameworks, restarting, re-running, and validating jobs.
• Hands on experience supporting system integrations: REST-based APIs, Event-driven integrations, File-based and asynchronous processing patterns.
• Experience re-platforming legacy integrations (e.g., file-based or proprietary protocols) to modern API-driven architectures.
• Comfort tracing issues across multiple services and integration logs.
• Proficiency in IBPL (o9 Solutions programming and scripting language).
• Proficiency in Java, Python, C#, or similar object-oriented programming languages.
• Some knowledge of VB.NET, JavaScript, or analytical packages like R, SAS, or CPLEX is desirable.
• Exposure to or ability to read legacy languages such as 4GL is a plus.
• Experience with web technologies (REST APIs, JSON, XML, HTML/CSS, JavaScript).
• Fluent in one or more query languages such as SQL, MDX, T-SQL, or IBPL is preferred.
• Proficiency with version control systems (Git, SVN).
• Knowledge of enterprise integration patterns and API design.
• Knowledge of cloud platforms (AWS, Azure, or similar).
• Experience with CI/CD pipelines and DevOps practices.
• Proficiency with Atlassian tools (JIRA, Confluence).
• Experience with project management tools (Smartsheet).
• Proficiency with Microsoft Office Suite (Excel, PowerPoint, Word).
• Experience with business intelligence platforms (Incorta is a plus).
• Knowledge of merchandising systems and retail business processes (planning, buying, allocation, replenishment).
• Understanding of retail backoffice operations and how legacy systems like Apropos support store and corporate retail functions.
• Understanding of ERP functionalities.
• Excellent communication skills with ability to explain complex technical concepts to business stakeholders.
• Customer service orientation with focus on delivering business value and operational efficiency.
• Strong analytical and problem-solving abilities with exceptional attention to detail.
• Self-directed with ability to work independently and manage multiple priorities.
• Strong collaboration skills working effectively with project stakeholders, end users, developers, QA, contractors, and offshore resources.
• Adaptability to changing business requirements and technology landscapes.
• Demonstrated ability and willingness to learn new technologies.
• Strong documentation and knowledge sharing practices.
• Strong habit of continuous learning as vendor products evolve.
Company:
Skechers is a Fortune 500® company — a growth-oriented brand that designs, develops, and markets a diverse product portfolio of lifestyle and performance footwear, apparel and accessories for men, women and children around the globe. Founded in 1992, the company is headquartered in Manhattan Beach, USA, with a team of 10001+ employees. The company is currently Late Stage.