Staff Backend Engineer

Team 

 

The ALTUS Billing and Usage - Software Engineering team is responsible for ALTUS’s customer account management as well as the usage and billing for customers. We are looking for an experienced Staff Software Engineer to help architect and build mission-critical systems that enable accurate metering, pricing, invoicing, and payment capabilities for our cloud services. You’ll play a pivotal role in ensuring customers can understand, trust, and manage their cloud usage and costs effectively. You will work across Customer Account Management, Usage Collection & Aggregation, Catalog/SKU Management, Pricing Engine, Billing Pipeline, and Payment Systems — laying the foundation for scalable and compliant financial infrastructure. 

 

Job Description 

 

As a Staff Software Engineer, you will partner with leaders of multiple platform teams. You will work closely with the product team to define and implement simple solutions of complex infrastructure problems while ensuring to build a highly scalable, reliable and efficient platform for our customers. You will technically guide teams working on full stack development teams using JAVA, AWS, Kafka, Kubernetes, Kubeflow, Argo CD and gRPC. You will be accountable for hiring and developing technical leaders and top talent, raising the bar on engineering and operational excellence. 

In this role, you will: 

 

• Lead the design of scalable, event-driven microservices for metering, pricing, billing, and invoicing. 

• Own the architecture of account hierarchy, subscription, and billing relationships (organization, teams, projects). 

• Hands-on develop critical infrastructure components.  

• Decompose complex problems into simple, straightforward solutions, providing mechanisms for the teams to prioritize ruthlessly and “move with urgency”. 

• Envision roadmaps for the scalable and robust growth of ALTUS’s billing infrastructure. 

• Collaborate with Product owner, TPMs, FinOps, and Compliance teams to define end-to-end billing experiences.  Proactively drive billing initiatives and align with stakeholders. 

• Demonstrate excellence resulting in scalable systems and services with the highest quality architecture and design. 

• Dive deep into critical system issues, proactively addressing similar root causes, and raise the bar on Operational Excellence. 

• Collaborate with other Coupang tech leaders to make the service extensible to unlock opportunities for innovations. 

   
 

Qualifications 

 

• Bachelor’s degree in computer science or related technical fields.  

• 8+ years professional software development experience, or 6 years’ experience with advanced degree.   

• Hands-on experience in designing and developing large scale distributed system in the last 3 years.  

• One who is fluent in one or more among Java, Go and Python. 

• Proven track record of delivering mission critical systems. 

• Experience developing and growing senior individual contributors globally. 

• Experience with cloud computing using AWS or Azure or GCP. 

• Experienced in Machine learning job deployment infrastructure like Ardo CD workflow. 

 

 

Preferred Qualifications  

 

• Experience in Kubernetes, gRPC.  

• Experience in building pricing engines, dynamic SKU catalogs, or contract billing systems 

• Familiarity with FinOps principles, cost attribution for multi-tenant environments, or enterprise invoicing needs. 

• Experience in concurrency, multi-threading, synchronization, and non-blocking IO.  

• Deep understing of operating system kernel and distributed system such as Kafka, Cassandra, ClickHouse and Mongo DB. 

• Proficient in some of the ML infrastructure and deployment frameworks like: TensorFlow, PyTorch, TensorRT, Triton backend etc. 

• Ability to handle multiple competing priorities in a fast-paced environment and leading the delivery of large-scale services for complex business offerings. 

• Ability to influence cross functional stakeholders, prioritize ruthlessly, Aim High and Find a Way to deliver results with grit. 

• Capable of or is fluent in English communication.   

• Master or PhD degree in computer science or other related technical fields.    

 

Recruitment Process and Others  

 

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.  

• Hiring may be restricted in case the legal qualifications required for hiring and work performance is not met.  

•  This is a full-time regular position and includes 12 weeks of probation period; provided, however, the probationary period may be either skipped, shortened or extended if necessary for business purposes. 

 

Privacy Notice  

• Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice is located below.  

https://privacy.coupang.com/en/land/jobs/  

 

Document Return Policy (This notice MUST be included in a job posting in Korea only to comply with the Fair Hiring Procedure Act.)  

1. This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act.  
2. A job applicant, who has applied but not been finally selected for a position at Coupang (the “Company”), may request the Company to return his/her hiring documents submitted pursuant to the Fair Hiring Procedure Act. However, this will not apply where the hiring documents were submitted via the website of the Company or e-mail, or where the job applicant submitted those documents voluntarily without a request from the Company. In addition, if the hiring documents were destroyed due to a natural disaster or any other reasons not attributable to the Company, such documents will be deemed to have been returned to the job applicant.  
3. A job applicant who wishes to request the return of his/her hiring documents pursuant to the main sentence of paragraph 2 above should fill out a “Request for Return of Hiring Documents” [Annex Form No. 3 in the Enforcement Rule of the Fair Hiring Procedure Act] and submit It by email (recruitingops@coupang.com). In such case, within fourteen (14) days from the date of identifying the receipt of the request, the Company will send the hiring documents to the job applicant’s designated address via registered mail. Please be informed that the job applicant is required to pay the postage on the registered mail.  
4. In preparation for a job applicant’s request for the return of hiring documents pursuant to the main sentence of paragraph 2 above, the Company shall retain the original hiring documents submitted by the job applicant for 180 days from the completion of the recruiting process. If no request is made until the end of this period, all his/her hiring documents will be destroyed immediately in accordance with the Personal Information Protection Act.  
5. The above paragraphs 1 - 4 shall only apply when the labor-related laws of Korea govern the application. They are otherwise not applicable.