Senior Product Engineer, Internal Tools

CALPAK•Gardena, CA

About The Position

CALPAK is seeking an experienced Senior Product Engineer to lead development of its internal tools and systems. The role combines product management and senior engineering responsibilities, partnering with cross-functional teams to identify business needs, prioritize development, and build solutions that improve how teams work. The initial focus is CALPAK’s custom Product Lifecycle Management (PLM) platform, with broader oversight of internal systems such as product master data, integrations, data warehousing, and reporting. This is a hands-on role with end-to-end ownership from development through implementation and user adoption, and includes managing a junior developer.

Requirements

Strong full-stack engineering experience with TypeScript, Next.js, PostgreSQL, SQL, and API integrations.
Proven experience building and launching internal applications or operational software, with ownership beyond initial deployment.
Experience managing product priorities, navigating competing stakeholder needs, and translating business requirements into technical solutions.
Proficiency using Claude Code or comparable AI-assisted development tools, including the ability to review, troubleshoot, and maintain AI-generated code.
Experience with database architecture, data modeling, system integrations, and master data management.
Familiarity with data warehouses such as BigQuery or Snowflake and BI platforms such as Power BI, Looker, or similar.
Strong communication and problem-solving skills, with the ability to work independently and collaborate across technical and nontechnical teams.

Nice To Haves

Experience with PLM, ERP, or other operational systems in apparel, accessories, or consumer goods.
Familiarity with finished goods product development and production workflows, including sampling, tech packs, lab dips, and purchase orders.
Experience with NetSuite, Shopify, or related data models and integrations.
Experience with internal application platforms such as Remy or Google Workspace administration.
Spanish or Mandarin language proficiency.

Responsibilities

Own product priorities and development for CALPAK’s internal tools, balancing business needs, technical feasibility, and available resources.
Partner with cross-functional teams to understand workflows, define requirements, and determine what gets built and when.
Lead hands-on development using Claude Code and modern engineering tools while maintaining code quality and reliability.
Manage and mentor a junior developer by providing technical direction, code reviews, and oversight of deliverables.
Lead implementation, training, and adoption, integrating tools into daily workflows and improving them based on user feedback.
Lead ongoing development of the custom PLM platform, initially focusing on product development workflows.
Oversee product master data across PLM, NetSuite, Shopify, and related systems, ensuring accuracy, consistency, and clear systems of record.
Manage data infrastructure, including system integrations, data warehousing, and business reporting.
Provide additional support as needed.