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Costco Software Engineer Jobs in Seattle, WA (NOW HIRING)

Software Engineer - GDX Order Management

Issaquah, WA · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Costco IT is responsible for the technical future of Costco Wholesale , the third largest retailer ... Software Engineers perform development work across the technology stack (both front-end/back-end ...

Software Engineer - GDX Order Management

Issaquah, WA · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Costco IT is responsible for the technical future of Costco Wholesale , the third largest retailer ... Software Engineers perform development work across the technology stack (both front-end/back-end ...

Quality Engineer - Costco Travel

Issaquah, WA · On-site

$83K - $107K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Costco Travel is looking for a dedicated and experienced Quality Engineer to join its Online Member ... This candidate must have a clear understanding of the software development methodologies and will ...

Manager, Software Engineering

Issaquah, WA · On-site

$198K - $218K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Manager, Software Engineering Define and execute the development strategy for Costco Travel's E-Commerce websites, platform, and applications. Ensure proper policies and procedures are in place to ...

Quality Engineer - Costco Travel

Issaquah, WA · On-site

$83K - $107K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Costco Travel is looking for a dedicated and experienced Quality Engineer to join its Online Member ... This candidate must have a clear understanding of the software development methodologies and will ...

Quality Engineer - Costco Travel

Issaquah, WA

$83K - $107K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Costco Travel is looking for a dedicated and experienced Quality Engineer to join its Online Member ... This candidate must have a clear understanding of the software development methodologies and will ...

Manager, Software Engineering

Issaquah, WA · On-site

$198K - $218K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Manager, Software Engineering Define and execute the development strategy for Costco Travel's E-Commerce websites, platform, and applications. Ensure proper policies and procedures are in place to ...

Network Engineer Costco Travel

Issaquah, WA · On-site

$105K - $135K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Network Engineer is responsible for maintaining, building, and operating Costco Travel's global ... software, and architecture. • Configures and maintains physical and virtual network ...

Network Engineer Costco Travel

Issaquah, WA

$105K - $135K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Network Engineer is responsible for maintaining, building, and operating Costco Travel's global ... management software, and architecture. Configures and maintains physical and virtual network ...

Network Engineer Costco Travel

Issaquah, WA

$105K - $135K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Network Engineer is responsible for maintaining, building, and operating Costco Travel's global ... management software, and architecture. Configures and maintains physical and virtual network ...

Quality Engineer - QA Lead - Costco Travel

Issaquah, WA · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Costco Travel is looking for a dedicated and experienced Software Quality Engineer to join its Shopping Portfolio quality team as QA Lead and will be responsible for leading Quality Engineers across ...

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Costco Software Engineer information

See Seattle, WA salary details

$72.3K

$168K

$234K

How much do costco software engineer jobs pay per year?

As of Aug 15, 2026, the average yearly pay for costco software engineer in Seattle, WA is $167,980.00, according to ZipRecruiter salary data. Most workers in this role earn between $136,600.00 and $197,000.00 per year, depending on experience, location, and employer.

What does a typical day look like for a Costco software engineer?

A typical day for a Costco Software Engineer involves collaborating with team members during daily stand-ups, working on new features or resolving bugs within Costco’s core applications, and participating in code reviews to maintain high-quality standards. You’ll coordinate closely with business analysts, quality assurance testers, and other IT professionals to ensure solutions meet user requirements and integrate smoothly with existing systems. Balancing independent work with teamwork is common, and you may also contribute to the design and architecture of new projects. This dynamic environment offers opportunities to learn, grow, and directly impact Costco’s customer and employee experiences.

What are the key skills and qualifications needed to thrive as a Costco software engineer?

To thrive as a Costco Software Engineer, you need strong programming skills (such as Java, C#, or Python), a background in computer science or a related field, and experience in building scalable applications. Proficiency with tools like Git, cloud platforms (AWS or Azure), and familiarity with frameworks relevant to Costco's technology stack can be highly beneficial. Excellent problem-solving ability, strong communication, and collaboration skills help you work effectively within cross-functional teams. These competencies ensure you can deliver reliable, high-quality software solutions that support Costco’s large-scale operations and customer-centric services.

What is a Costco software engineer?

A Costco Software Engineer is responsible for designing, developing, and maintaining software solutions to support Costco's business operations. They work on various technology initiatives, including e-commerce platforms, internal business applications, and data management systems. This role involves collaborating with cross-functional teams, ensuring software quality, and optimizing system performance. Costco emphasizes scalability, security, and efficiency in its technology solutions.

What job categories do people searching Costco Software Engineer jobs in Seattle, WA look for?

The top searched job categories for Costco Software Engineer jobs in Seattle, WA are:

What cities near Seattle, WA are hiring for Costco Software Engineer jobs?

Cities near Seattle, WA with the most Costco Software Engineer job openings:

Infographic showing various Costco Software Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $167,980 per year, or $80.8 per hour.

Software Engineer - GDX Order Management

Costco IT

Issaquah, WA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 17 days ago


Costco rating

8.1

Company rating: 8.1 out of 10

Based on 1,919 frontline employees who took The Breakroom Quiz

2nd of 39 rated national retailers


Job description

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.

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.

Software Engineers perform development work across the technology stack (both front-end/back-end expertise). They are versatile in how they can add value, demonstrating the ability to manage the completion of projects that involve databases, backend services, or the development of front-end applications. They should be able to demonstrate a strong understanding of emerging technologies to support the development of new solutions. Software Engineers understand the full technology stack and underlying applications, services, and databases in order to ensure optimal performance.

The Costco GDX team is looking for a passionate engineer eager to solve complex problems at a global scale. At Costco, we're building the next generation of retail technology, and we need talented individuals to drive our digital transformation. We're a company that not only delivers exceptional value to millions of members worldwide but also deeply values its employees, fosters a culture of innovation, and offers genuine opportunities for technical and career growth.

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

  • Collaborates with team members (e.g., Systems Architects, Systems Analysts) to define project specifications and release documentation for all phases of the product development cycle from product definition to design, through implementation.

  • Conducts peer code reviews for the software changes made by other engineers within a team.

  • Supports release planning activities in conjunction with Product Owners and teams.

  • Stays accountable for Order Management Platform's overall architecture, strategically applying principles that promote availability, reusability, interoperability, and security within the design framework.

  • Establishes and maintains engineering best practices to deliver higher quality, scalable solutions.

  • Mentors and develops software engineers by providing guidance, coaching, and fostering a culture of continuous learning.

  • Establishes and maintains coding standards, architectural patterns, and development processes.

  • Works cross-functionally to pilot innovative technologies and capabilities that enhance overall member experience and drive business operational efficiencies.

  • Performs development, optimization, and automation activities to support the implementation of the Order Management platform.

  • Uses test-driven development practices to assist with the detection of software defects early in the development process.

  • Defines specifications and documentation across all phases of the product development cycle, from design to implementation.

  • Works with the product team on defining the product strategy and roadmap.

  • Estimates, plans, and manages all implementation tasks and reports on progress.

  • Delivers innovative capabilities that enhance the member experience across various digital touchpoints.

  • Builds microservice components from the ground up.

  • Ensures the longevity, scalability and quality of our systems through continuous improvement, comprehensive documentation, meticulous profiling, and significant performance enhancements.

  • Mentors a team of engineers, fostering a culture of continuous learning and improvement.

REQUIRED

  • 10+ years of experience with C#, TypeScript, REST, JSON, XML, YAML, GraphQL and OpenAPI.

  • 10+ years of hands-on experience in architecting, designing and developing containerized (Dockers/Kubernetes) services based on the .Net Core framework.

  • 10+ years of experience developing and writing unit tests using NUnit or similar framework.

  • 5+ years of experience leading development with engineers in multiple geographical locations and time zones

  • 5+ years of experience working on building scalable cloud native architecture

  • 5+ years of experience with CI/CD tools: GitHub, Jenkins.

  • 10+ years of experience with API development, with an emphasis on security and performance.

  • 5+ experience with microservice-based debugging and performance testing software.

  • 10+ years of experience developing within an agile methodology.

  • Solid knowledge of database application development in relational and no-SQL platforms.

  • Strong verbal and written communication skills and be able to communicate to both technical and Business audiences.

  • Possesses strong leadership and interpersonal communication skills, effectively conveying product vision and influencing a wide range of stakeholders across the organization.

  • Ability to work under pressure in crisis with a strong sense of urgency.

  • Responsible, conscientious, organized, self-motivated and able to work with limited supervision.

  • Detail-oriented and possess strong problem-solving skills and ability to analyze potential future issues.

  • Able to support off-hours work as required, including weekends, holidays, and 24/7 on call responsibilities on a rotational basis.

Recommended
  • Bachelor's degree in Computer Science, Engineering, or a related field.

  • Experience working in a retail ecommerce environment.

  • Experience with Data modeling and Object-Oriented design

  • Knowledge of SOX, PII, PCI, CCPA, HIPPA regulations for transactions, security, and confidentiality.

  • Experience with deploying and configuring Google Cloud Platform resources e.g. GKE, Pub/Sub, Spanner, BigQuery

  • Experience with MemoryStore, Redis or similar technologies.

  • Proficient in Google Workspace applications, including Sheets, Docs, Slides, and Gmail.

Required Documents

Cover Letter

Resume

California applicants, please click here to review the Costco Applicant Privacy Notice.

Pay Ranges:

Level 1 - $85,000 - $110,000

Level 2 - $105,000 - $135,000

Level 3 - $130,000 - $160,000

Level SR - $150,000 - $190,000, Bonus and Restricted Stock Unit (RSU) eligible

Level Staff - $180,000 - $225,000, Bonus and Restricted Stock Unit (RSU) eligible

We 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 account, dependent care assistance plan, short-term disability and long-term disability insurance, AD&D insurance, life insurance, 401(k), stock purchase plan to eligible employees.

Costco is committed to a diverse and inclusive workplace. Costco is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or any other legally protected status. If you need assistance and/or a reasonable accommodation due to a disability during the application or the recruiting process, please send a request to IT-Recruiting@costco.com

If hired, you will be required to provide proof of authorization to work in the United States. In some cases, applicants and employees for selected positions will not be sponsored for work authorization, including, but not limited to H1-B visas.



Employment Type: Full-Time

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About Costco

Sourced by ZipRecruiter

Costco is a membership warehouse club, dedicated to bringing our members the best possible prices on quality brand-name merchandise. With more than 800 locations worldwide, Costco provides a wide selection of merchandise, plus the convenience of specialty departments and exclusive member services, all designed to make your shopping experience a pleasurable one. Today, as the company evolves, it stays true to the qualities that helped attract and retain millions of loyal members around the globe: Commitment to quality. Costco warehouses carry about 4,000 SKUs (stock keeping units) compared to the 30,000 found at most supermarkets. By carefully choosing products based on quality, price, brand, and features, the company can offer the best value to members.

Industry

Retail

Company size

10,000+ Employees

Headquarters location

Issaquah, WA, US

Year founded

1983