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Senior Staff Staff Backend Engineer (Security Infrastructure)

Coupang


Job Location:

Singapore - Singapore

Monthly Salary: Not provided by the employer
Posted: 11 July 2026 (30+ days ago)
Application Deadline: 18 November 2026
Vacancies: 1 Vacancy

Job Summary

Company Introduction

We exist to wow our customers. We knowweredoing 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 are collectively disrupting the multi-billion-dollar commerce industry from the ground up andestablishingan unparalleled reputation for being 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 ourinception. We are all entrepreneurs 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 ofwhatspossible to solve problems and break traditionaltradeoffs. Join Coupang now to create an epic experience in this always-on high-tech and hyper-connected world.

Role Overview

As a Senior Staff / Staff Engineer on the Security Infrastructure team you will build the platform that enables Coupang to win and grow our customers confidence while rapidly expanding and scaling our services. Specifically you will work on our dynamic authorization engine which manages the security risks of all our customer interactions by looking for signs of unusual or potentially malicious activity. This is a critical system which protects both our customers and our company against damage from malicious activity.

Our work supports teams across Coupang andthousands of are looking for engineerswho are passionate about building platforms at scale with emphasis on usabilityreliabilityand successful candidate will bea well-rounded engineer whobalances strategic and design thinking with attention to detail in implementation and that sounds like you come join us!

What You Will Do

In this role you will:

  • Develop ourcustomer authentication and authorizationplatformsandrapidly iterate while collaborating actively as part of a smallhighly talentedteam.
  • Partner with teams across the company to understand their current needs and future direction.
  • Think systematically toidentifytechnical solutionsbalancingstrategicgoalsand immediate impact.
  • Demonstrate excellence inarchitecture and designresulting in robust and scalable systems.
  • Hands-on develop critical infrastructure components.
  • Write back-end APIsin Java and Go using industry-standardframeworks.
  • Work across teams to drive platform adoption helping teams prioritize ruthlessly and move with urgency.
  • Dive deep into critical system issuesconstantlyraisingthe bar on Operational Excellence.
  • Serve as a role model forother engineers and shape our team culture.

Minimum Qualifications

  • Bachelors degree in computer science or related technical field.
  • 8 years professional software development experience or 6 years experience with advanced degree.
  • 2 years experience leading technical projects.
  • Fluent in one or more of C Java and Go.
  • Recent hands-on experience designing and developing large scale distributed systems.
  • Proven track record of delivering mission critical systems.
  • Experience with cloud computing using AWS Azure or GCP.
  • Deep understanding of Cloud applications design and architecture good API design patterns performance and scale.

Preferred Qualifications

  • Masters or PhD degree in computer science or other related technical field.
  • Working knowledge of security protocols such as OIDC and OAuth2.
  • Working knowledge of IAM systems such as identity providers and role based authorization.
  • Experience working with Kubernetes gRPC and Istio.
  • Experience building high-reliability and low-latency systems in the Cloud.
  • Experience with CI/CD pipelines and Infrastructure as Code.
  • Experience handling multiple competing priorities in a fast-paced environment and leading the delivery of large-scale services for complex business offerings.

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 addresssubmittedat the application stage.

Details to Consider

  • This role is open to Singapore Citizens and Permanent Residents only
  • 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 havesubmittedfalse information as part of the application process.
  • Those eligible for employment protection (recipients of veterans benefits the disabled etc.) may receive preferential treatment for employmentin accordance withapplicable laws.
  • Job titles and responsibilities may be subject to change depending on the candidates overall experience etc. This will be communicated to the candidate at theappropriate timebefore the offer.
  • Hiring may be restricted in case the legal qualificationsrequiredfor hiring and work performance is not met.

Privacy Notice

Your personal information will be collected and managed by Coupang asstatedin the Application Privacy Noticelocatedbelow.

Experience:

Staff IC


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