Senior Backend Developer Jobs in Washington
Senior Backend Developer jobs in Washington are among the most active in the country, concentrated in cloud infrastructure, enterprise software, and fintech across Seattle, Bellevue, and Redmond. Amazon, Microsoft, and Expedia Group anchor the region's demand at every level of seniority, drawing engineers with deep expertise in distributed systems, API design, and platform engineering. Specializations in Kubernetes, microservices architecture, and Go or Rust are consistently sought across both large tech employers and the state's growing mid-market SaaS companies. Find a role that fits below and apply directly.
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Showing 5 of 6+ Senior Backend Developer jobs
We exist to wow our customers. We know we're doing the right thing when we hear our customers say, "How did I ever live without Coupang?" Born out of an obsession to make shopping, eating, and living easier than ever, we're collectively disrupting the multi-billion-dollar commerce industry from the ground up. We are one of the fastest-growing retail companies that established an unparalleled reputation for being a leading and reliable force in South Korean commerce.
We are proud to have the best of both worlds — a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurial, surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day.
Our mission to build the future of commerce is real. We push the boundaries of what's possible to solve problems and break traditional tradeoffs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world.
Job Overview:
As our Sr. Staff Backend Engineer for the Inventory and Promise Platform team, you will empower Coupang Fulfillment & Transportation to operate faster, better, and cheaper through modern, reliable, and data-driven technologies. In this role, you will be a key contributor to an area of the business that is rapidly expanding and is recognized for its Rocket Delivery service. The team already builds services that process thousands of requests per second, generate trillions of won annually in business decisions, and manage business rules that move millions of products. We are responsible for improving order coordination with technology to deliver products to millions of online shoppers. The role will involve technical leadership on rearchitecting and building a brand new Inventory and Promise platform which powers customer's shopping experience by giving inventory visibility to the customer to be able to order and gives out promised delivery dates for their order. Additionally, the platform also powers fulfillment orchestration once an order is placed.
Key Responsibilities:
- Serve as a technical lead on our most demanding, cross-functional projects involving Inventory and Promise.
- Independently come up with quality architecture and design of systems for new microservices and machine learning pipelines.
- Functionally decompose complex problems into simple, straightforward solutions.
- Possess expert knowledge in performance, scalability, enterprise distributed architecture, and engineering best practices.
- Assist in the career development of others, actively mentoring individuals and the community on advanced technical issues and helping managers guide the career growth of their team members.
- Exert technical influence over multiple teams, increasing their productivity and effectiveness by sharing your deep knowledge and experience.
Qualifications:
- Bachelor's degree in Computer Science, Electrical Engineering, Math, or a closely related field
- 10+ years of experience in backend software development
- Demonstrated experience in building and maintaining highly available, distributed systems
Preferred:
- Experience with scalable distributed systems and understanding of machine learning algorithms.
- Strong understanding of backend scalable software architecture, distributed systems, and message-oriented architecture.
- Experience with full-stack, high-scale production systems with fault-tolerance and monitoring.
- Experience with building stream-processing systems, using solutions such as Kafka and Spark-Streaming.
- Data caching and storage techniques and creating distributed software architectures with horizontal scale.
- Operationalizing software in a large-scale environment with high availability requirements.
- Experience in the eCommerce domain involved in supply chain systems around Inventory and Promise.
- Software development experience with Java, Scala, and Python.
- Experience with AWS; Java language would be a plus.
Pay & Benefits
Our compensation reflects the cost of living across several US geographic markets. At Coupang, your base pay is one part of your total compensation.
The base pay for this position ranges from $174,00/year to $299,000/year. Pay is based on several factors including market location and may vary depending on job-related knowledge, skills, and experience.
General Description of All Benefits
- Medical/Dental/Vision/Life, AD&D insurance
- Flexible Spending Accounts (FSA) & Health Savings Account (HSA)
- Long-term/Short-term Disability
- Employee Assistance Program (EAP) program
- 401K Plan with Company Match
- 18-21 days of the Paid Time Off (PTO) a year based on the tenure
- 12 Public Holidays
- Paid Parental leave
- Pre-tax commuter benefits
- MTV - [Free] Electric Car Charging Station
General Description of Other Compensation
"Other Compensation" includes, but is not limited to, bonuses, equity, or other forms of compensation that would be offered to the hired applicant in addition to their established salary range or wage scale.
Recruitment Process
- Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview – Offer
- The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.
- Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.
Details to Consider
- This job posting may be closed prior to the stated end date for application if all openings are filled.
- Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process.
- Those eligible for employment protection (recipients of veteran's benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws.
Privacy Notice
- Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below: https://www.coupang.jobs/privacy-policy/
Coupang is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, or gender (including pregnancy, gender identity, gender expression, sexual orientation, transgender status), national origin, age, disability, medical condition, HIV/AIDS or Hepatitis C status, marital status, military or veteran status, use of a trained dog guide or service animal, political activities, or affiliations, citizenship, or any other characteristic or class protected by the laws or regulations in the locations where we operate. If you need assistance and/or reasonable accommodation in the recruiting process due to a disability, please contact us at usrecruiting@coupang.com.
Job Requisition ID: R0078747
We exist to wow our customers. We know we're doing the right thing when we hear our customers say, "How did I ever live without Coupang?" Born out of an obsession to make shopping, eating, and living easier than ever, we're collectively disrupting the multi-billion-dollar commerce industry from the ground up. We are one of the fastest-growing retail companies that established an unparalleled reputation for being a leading and reliable force in South Korean commerce.
We are proud to have the best of both worlds — a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurial, surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day.
Our mission to build the future of commerce is real. We push the boundaries of what's possible to solve problems and break traditional tradeoffs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world.
Job Overview:
As our Sr. Staff Backend Engineer for the Inventory and Promise Platform team, you will empower Coupang Fulfillment & Transportation to operate faster, better, and cheaper through modern, reliable, and data-driven technologies. In this role, you will be a key contributor to an area of the business that is rapidly expanding and is recognized for its Rocket Delivery service. The team already builds services that process thousands of requests per second, generate trillions of won annually in business decisions, and manage business rules that move millions of products. We are responsible for improving order coordination with technology to deliver products to millions of online shoppers. The role will involve technical leadership on rearchitecting and building a brand new Inventory and Promise platform which powers customer's shopping experience by giving inventory visibility to the customer to be able to order and gives out promised delivery dates for their order. Additionally, the platform also powers fulfillment orchestration once an order is placed.
Key Responsibilities:
- Serve as a technical lead on our most demanding, cross-functional projects involving Inventory and Promise.
- Independently come up with quality architecture and design of systems for new microservices and machine learning pipelines.
- Functionally decompose complex problems into simple, straightforward solutions.
- Possess expert knowledge in performance, scalability, enterprise distributed architecture, and engineering best practices.
- Assist in the career development of others, actively mentoring individuals and the community on advanced technical issues and helping managers guide the career growth of their team members.
- Exert technical influence over multiple teams, increasing their productivity and effectiveness by sharing your deep knowledge and experience.
Qualifications:
- Bachelor's degree in Computer Science, Electrical Engineering, Math, or a closely related field
- 10+ years of experience in backend software development
- Demonstrated experience in building and maintaining highly available, distributed systems
Preferred:
- Experience with scalable distributed systems and understanding of machine learning algorithms.
- Strong understanding of backend scalable software architecture, distributed systems, and message-oriented architecture.
- Experience with full-stack, high-scale production systems with fault-tolerance and monitoring.
- Experience with building stream-processing systems, using solutions such as Kafka and Spark-Streaming.
- Data caching and storage techniques and creating distributed software architectures with horizontal scale.
- Operationalizing software in a large-scale environment with high availability requirements.
- Experience in the eCommerce domain involved in supply chain systems around Inventory and Promise.
- Software development experience with Java, Scala, and Python.
- Experience with AWS; Java language would be a plus.
Pay & Benefits
Our compensation reflects the cost of living across several US geographic markets. At Coupang, your base pay is one part of your total compensation.
The base pay for this position ranges from $174,00/year to $299,000/year. Pay is based on several factors including market location and may vary depending on job-related knowledge, skills, and experience.
General Description of All Benefits
- Medical/Dental/Vision/Life, AD&D insurance
- Flexible Spending Accounts (FSA) & Health Savings Account (HSA)
- Long-term/Short-term Disability
- Employee Assistance Program (EAP) program
- 401K Plan with Company Match
- 18-21 days of the Paid Time Off (PTO) a year based on the tenure
- 12 Public Holidays
- Paid Parental leave
- Pre-tax commuter benefits
- MTV - [Free] Electric Car Charging Station
General Description of Other Compensation
"Other Compensation" includes, but is not limited to, bonuses, equity, or other forms of compensation that would be offered to the hired applicant in addition to their established salary range or wage scale.
Recruitment Process
- Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview – Offer
- The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.
- Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.
Details to Consider
- This job posting may be closed prior to the stated end date for application if all openings are filled.
- Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process.
- Those eligible for employment protection (recipients of veteran's benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws.
Privacy Notice
- Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below: https://www.coupang.jobs/privacy-policy/
Coupang is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, or gender (including pregnancy, gender identity, gender expression, sexual orientation, transgender status), national origin, age, disability, medical condition, HIV/AIDS or Hepatitis C status, marital status, military or veteran status, use of a trained dog guide or service animal, political activities, or affiliations, citizenship, or any other characteristic or class protected by the laws or regulations in the locations where we operate. If you need assistance and/or reasonable accommodation in the recruiting process due to a disability, please contact us at usrecruiting@coupang.com.
Job Requisition ID: R0078747
See All 6 Senior Backend Developer Jobs in Washington
Find roles in Washington that match your experience and apply in just a few clicks.
Find Senior Backend Developer JobsSenior Backend Developer Jobs by City in Washington
Where Washington roles are concentrated, by current openings.
Senior Backend Developer Job Market in Washington
A snapshot from current Washington openings, updated as new roles post.
Who's Hiring
Top Industries Hiring
- Technology & Software
What Washington Employers Look For
The qualifications that appear most often in senior backend developer jobs across Washington.
- Bachelor's degree in computer science, software engineering, or a closely related field
- Five or more years of professional backend development experience in production environments
- Proficiency in at least one of Go, Java, Python, or Rust for server-side development
- Hands-on experience designing and operating distributed systems and cloud-native architectures on AWS or Azure
- Demonstrated ability to lead technical design reviews and mentor junior engineers on the team
- Experience with containerization and orchestration tools including Docker and Kubernetes in production
Senior Backend Developer Jobs in Washington: Frequently Asked Questions
How do you become a senior backend developer in Washington?
Washington does not require a state-issued license or registration to work as a senior backend developer. The path typically runs through a computer science or software engineering degree followed by several years building and shipping production backend systems. Washington employers place particular weight on demonstrated cloud experience, often on AWS or Azure given the region's concentration of cloud-native companies, and on a portfolio or work history showing ownership of complex, high-traffic systems.
How much do senior backend developers make in Washington?
Senior backend developers in Washington earn a median of about $166,540 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $96,810 for the lowest 10% to over $255,350 for the top 10%. Pay rises with experience, specialty, and employer.
Which companies hire senior backend developers in Washington?
Employers hiring senior backend developers in Washington right now include Logic, Coupang, and Tillster, based on current listings on Migrate Mate as of September 2026. Washington's tech-dense corridor between Seattle and Redmond means both global enterprises and fast-growing SaaS companies compete for experienced backend engineers year-round.
Which Washington cities have the most senior backend developer jobs?
Seattle have the most senior backend developer openings in Washington. Seattle and Bellevue lead because Amazon, Microsoft, and a dense cluster of enterprise software and cloud companies are headquartered there, while Redmond draws engineers specifically into Microsoft's large product and platform teams that require deep backend specialization.
Are there remote senior backend developer jobs in Washington?
Yes, and more than most fields. About 50% of senior backend developer openings tied to Washington are remote or hybrid as of September 2026, reflecting how thoroughly this discipline shifted toward distributed work. Roles focused on platform engineering, API development, and data pipeline architecture tend to be the most consistently offered as fully remote, while positions with on-call infrastructure responsibilities more often require hybrid availability.
How can I get hired as a senior backend developer in Washington with little or no experience?
The most realistic entry path is landing a junior or associate software engineer role and building toward backend specialization from there. Amazon, Microsoft, and Boeing all run structured new-graduate and university-hire programs that bring in engineers without industry experience. Starting in a QA automation, site reliability, or DevOps associate role at a Washington tech company is also a common lateral move that opens the door to backend positions. A strong GitHub portfolio demonstrating REST API projects or cloud deployments on AWS gives candidates without a long work history a concrete edge.
Where can I find and apply to senior backend developer jobs in Washington?
You can find and apply to senior backend developer jobs in Washington on Migrate Mate, which lists current Washington openings. Find roles that fit your experience and apply directly to the ones that match.
See All 6 Senior Backend Developer Jobs in Washington
Find roles in Washington that match your experience and apply in just a few clicks.
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