Demo

Software Engineer - Membership

Costco IT
Seattle, WA Full Time
POSTED ON 11/27/2025
AVAILABLE BEFORE 12/25/2025
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.

A Software Engineer is an IT professional who designs, develops, and maintains Costco membership applications. They use their creativity and technical skills and apply the principles of software engineering to help solve new and ongoing problems for an organization. They are also responsible for data designing, acquiring, maintenance and security, test case designing, and documentation. The ideal candidate will demonstrate the ability to manage the completion of projects in a highly distributed and reliable application. This position will require an individual to design, build, debug, optimize and implement solutions in a fast-

paced Agile environment participating and working closely with a highly motivated team serving millions of customers on a daily basis.

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 the conceptual systems architecture design and the supporting technologies needed to enable new and/or enhanced functionality within a given product/application, applying principles that promote availability, reusability, interoperability and security into the design framework.
  • Supports release planning activities in conjunction with Product Owners and teams.
  • Identifies high level requirements to support the definition and refinement of a robust testing strategy.
  • Supports the Product Owner with the identification and definition of enablers / work items to support the architectural runway of a given product/application.
  • Defines the non-functional requirements (e.g., performance, security, resiliency, etc.) which support the development of epics and user stories aligned to a value stream.
  • Identifies technical dependencies across several product / application teams to support the implementation of new or enhanced functionality.
  • Performs development, optimization, and automation activities to support the implementation of a product/application.
  • Increases proficiency and understanding of relational and non-relational databases, distributed application architectures, user interfaces and user experience, quality assurance, security concerns, and business value creation.
  • Adopts engineering best practices to deliver higher quality and scalable solutions.
  • Provides the team with the development strategy, solution recommendations, and estimates for a given product/application.
  • Participates in scrum ceremonies (sprint planning, retrospective, showcases/demos, stand-ups, backlog refinement, etc.).
  • Designs, builds, debugs, optimizes and implements solutions in approved tool sets and databases.
  • Develops high quality, efficient and fault tolerant software.
  • Supports, extends and builds automated CI and CD pipelines.
  • Designs and delivers DevSecOps automation for app deployment and testing.
  • Creates and executes unit tests which validate the code changes made to support the implementation of a user story.
  • Uses APM/monitoring tools such as Dynatrace/Splunk and browser tools to perform request purepath/waterfall analysis to identify bottlenecks and suggest improvements.
  • Participates in the development and documentation of department standards and best practices, and mentors’ junior engineers.
  • Estimates, plans, and manages all implementation tasks and reports on development progress.
  • 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.
  • Uses test-driven development (TDD) practices to assist with the detection/recognition of software defects early in the development process.
  • Demonstrates a strong understanding of emerging technologies to support the development of new solutions.
  • Works with team members to move user stories from the development backlog into testing and provides clarification when needed.
  • Able to support off hours work as required including on location and 24/7 on call responsibilities on a rotational basis.

Required

  • 3 years’ experience in developing API in .NET, Angular, and Azure frameworks/platforms.
  • 3 years’ experience building and deploying infrastructure with cloud deployment technologies such Microsoft Azure.
  • Experience with developing and running applications in a public cloud environment (Container platforms such as AKS or GKE preferred).
  • 3 years’ hands-on working knowledge of on-prem and cloud databases (Cosmos, SQL, DB2, etc) and/or NoSql.
  • Experience working in CI/CD, script, designing and delivering DevSecOps automation for app deployment and testing.
  • Experience describing the solutions and generating the architecture (Logical, Physical) artifacts.
  • Familiarity with tools, such as: Azure DevOps, Microsoft VisualStudio Pro, Postman Pro, GitHub, LucidCharts, etc.
  • Ability to work with all levels of the development organization, including non-technical resources.
  • Must have high integrity, accountability, a positive attitude, and be willing to do what it takes to make the team successful.
  • Team player, good interpersonal, organizational and communication skills. Creative, likes challenges.
  • Must be extremely responsive, able to work under pressure in crisis with a strong sense of urgency.
  • Responsible, conscientious, organized, self-motivated and able to work with limited supervision.
  • Application development in Java, JavaScript, Spring Boot and Docker
  • Must possess a strong understanding of the software development process
  • Strong knowledge of object-oriented concepts.
  • Strong knowledge and experience working with databases.
  • Strong verbal and written communication skills and be able to communicate to both technical and Business audiences.
  • Demonstrated ability to execute against iteration plans and deliver assignments within scope, schedule, and budget.
  • Ability to work with all management levels.
  • Must have high integrity, accountability, a positive attitude, and be willing to do what it takes to make the team successful.
  • Team player, good interpersonal, organizational and communication skills. Creative, likes challenges.
  • Strong organizational and time management skills with ability to multitask and prioritize work effectively in a fast-paced working environment.
  • Must be extremely responsive, able to work under pressure in crisis with a strong sense of urgency.
  • Responsible, conscientious, organized, self-motivated and able to work with limited supervision.
  • Must be 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

  • Integrating an application with other applications using web services.
  • In application development in Java, JavaScript, .Net, Angular.
  • With a working knowledge of databases (DB2, SQL Server, Oracle etc.).
  • Programming experience with related technology such as XML, Java, various JavaScript frameworks,and SQL queries.
  • Experience teaching, coaching, and/or mentoring others.
  • Proficient in Google Workspace applications, including Sheets, Docs, Slides, and Gmail.

Required Documents

  • Cover Letter
  • Resume

California applicants, please click 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 STF - $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 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.

Salary : $85,000 - $135,000

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Software Engineer - Membership?

Sign up to receive alerts about other jobs on the Software Engineer - Membership career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$77,657 - $95,021
Income Estimation: 
$97,257 - $120,701
Income Estimation: 
$97,257 - $120,701
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$176,149 - $220,529
Income Estimation: 
$77,657 - $95,021
Income Estimation: 
$97,257 - $120,701
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Costco IT

Costco IT
Hired Organization Address Seattle, WA Full Time
Costco IT is responsible for the technical future of Costco Wholesale , the third largest retailer in the world with who...
Costco IT
Hired Organization Address Seattle, WA Full Time
Costco IT is responsible for the technical future of Costco Wholesale , the third largest retailer in the world with who...
Costco IT
Hired Organization Address Seattle, WA Full Time
Costco IT is responsible for the technical future of Costco Wholesale , the third largest retailer in the world with who...
Costco IT
Hired Organization Address Seattle, WA Full Time
Costco IT is responsible for the technical future of Costco Wholesale, the third largest retailer in the world with whol...

Not the job you're looking for? Here are some other Software Engineer - Membership jobs in the Seattle, WA area that may be a better fit.

Software Engineer - Membership

Costco Wholesale, Seattle, WA

Software Engineer - Membership

Costco, Issaquah, WA

AI Assistant is available now!

Feel free to start your new journey!