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Principal Engineer - Order Management Systems

Costco Wholesale

Company : Costco Wholesale

Location : Seattle, WA, 98127

Posted Date : 15 September 2025

Job Details

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Costco IT is responsible for the technical future of Costco Wholesale , the third largest retailer in the world with wholesale operations in fourteen countries. Despite our size and explosive international expansion, we continue to provide a family, employee centric atmosphere in which our employees thrive and succeed. As proof, Costco ranks eighth in Forbes “World’s Best Employers” .
This is an environment unlike anything in the high-tech world and the secret of Costco’s success is its culture. The value Costco puts on its employees is well documented in articles from a variety of publishers including Bloomberg and Forbes. Our employees and our members come FIRST. Costco is well known for its generosity and community service and has won many awards for its philanthropy. The company joins with its employees to take an active role in volunteering by sponsoring many opportunities to help others.
Come join the Costco Wholesale IT family . Costco IT is a dynamic, fast-paced environment, working through exciting transformation efforts. We are building the next generation retail environment where you will be surrounded by dedicated and highly professional employees.
The IT Order Management System (OMS) Team is dedicated to providing world-class OMS solutions for Costco’s global business, enabling an unparalleled omni-channel member experience.
The Principal Engineer holds a pivotal technical leadership role, steering the strategic vision and technical design of Costco’s global OMS platform. This role will help design, develop, and implement a highly scalable and resilient cloud based custom OMS platform, and provide hands-on technical leadership to product engineering teams charged with this rare opportunity. This is a dynamic role requiring collaboration across multiple business and technical stakeholders, and incorporates broad and diverse knowledge spanning technologies such as multi-tenant distributed systems, cloud services , containerization, database, caching, security, API and event-driven architecture, and more. The candidate will bring thought leadership in designing and implementing applications and platforms in a distributed cloud architecture in public cloud spaces such as Azure or Google Cloud. In addition, the Principal Engineer will foster a growth mindset for the team to enhance their technical knowledge and skill set.
If you want to be a part of one of the worldwide BEST companies “to work for”, simply apply and let your career be reimagined.
ROLE

  • Develops and executes a strategic platform vision for the global OMS and related omnichannel experiences in alignment with organizational goals.
  • Leads and mentors a team of engineers, providing technical guidance, sharing best practices, and fostering a culture of continuous learning and growth to strengthen the technical expertise and know-how of our engineering and product community.
  • Gains and maintains a working understanding of Costco’s business and collaborates with cross-functional teams, including product managers, architects, and other engineering teams, to drive the implementation of scalable and reliable solutions.
  • Designs, codes, deploys, and supports high-performance software.
  • Provides support in developing new product lines and upgrading existing products.
  • Conducts in-depth technical analysis of OMS systems and processes, identifying areas for improvement and recommending innovative solutions to enhance efficiency, security, and user experience.
  • Collaborates with DevOps teams to ensure the smooth deployment and operation of services and systems in a highly available and scalable production environment.
  • Works with the product engineering teams to design prototypes to validate application functionality.
  • Participates in design, code and test plan reviews as needed and provide appropriate recommendations.
  • Reviews code on a regular basis across all teams in the domain.
  • Develops best practices to ensure software functionality, usability, reliability and availability.
  • Stays up-to-date with the latest industry trends and advancements in software patterns and practices, architecture, and risk identification techniques, and apply them to drive innovation and excellence in our solutions.
  • Assists in development of design documents, white papers, training documents and software architectural documents.
  • Leads workshop sessions.
  • Attracts, retains, develops, and motivates top technology talent.
  • Develops “best-in-class” engineering for services by ensuring that the services and the components are well-defined and modularized, reusable, secure, reliable, diagnosable, and actively monitored.
  • Troubleshoots and optimizes automation, reliability, and monitoring for delivered products.
  • Serves as a point of escalation for teams facing complex challenges.
Required
  • 15+ years of professional software development experience.
  • 5+ years of experience with Google Cloud, Azure or another cloud service.
  • Experience building large scale distributed systems.
  • Proven experience leading engineering teams in an Agile/Scrum environment.
  • Expert in C# programming language with additional experience in, SQL, NoSQL databases, Container Orchestration services, including Docker and Kubernetes, infrastructure-as-code (Terraform), and a variety of Google Cloud and/or Azure Cloud tools and services.
  • Demonstrated experience leading the design, development, delivery and maintenance of large scale and high-performance platforms.
  • Strong communication and leadership abilities, with a proven track record of collaborating effectively in cross-functional teams, and mentoring and motivating software engineers .
  • Positive, can-do attitude and value collaboration a must.
  • Expertise with object-oriented code, scripting, and infrastructure as code.
  • Experience leading software engineering organizations.
  • Experience working in a Product Management environment.
Recommended
  • Bachelor's or Master’s Degree in Computer Science or equivalent experience and knowledge.
  • Deep knowledge of one or more retail discipline(s) (Ecommerce, supply chain systems, etc)
  • Extensive experience in designing and developing enterprise services and microservice architecture across the following domains:
○ Order Processing, Inventory Management, Order Fulfillment, Returns Management, Omni-channel Services
  • Expert in using modern software development tools, Git, branching and versioning patterns and practices, and continuous integration/continuous deployment (CI/CD) pipelines.
  • Excellent problem-solving and analytical skills, with the ability to dissect complex technical challenges and propose innovative solutions.
Required Documents
  • Cover Letter
  • Resume
California applicants, please click here to review the Costco Applicant Privacy Notice.Pay Range: $160,000 - $230,000, Bonus and Restricted Stock Unit (RSU) eligibleWe offer a comprehensive package of benefits including paid time off, health benefits - medical/dental/vision/hearing aid/pharmacy/behavioral health/employee assistance, health care reimbursement

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