Software Development Engineer, PostX APEX

Amazon Advertising is one of the fastest-growing businesses at Amazon connecting brands with customers across the store Prime Video Twitch and the open internet. The tech stack spans real-time bidding creative serving audience targeting measurement and billing all operating at a scale where small inefficiencies cost real money.

Within Amazon Advertising the APEX (Advertising Post-X Events) team owns what happens after an ad is served. When an ad is played for a customer a chain of events fires that determines whether the advertiser gets charged whether the publisher gets paid and whether anyone can prove any of it happened. Thats us.

APEX processes billions of these events daily across every ad format Amazon supports. As an SDE on this team youll own real-time systems where correctness isnt aspirational; its the product. Latency budgets are tight scale is massive and the blast radius of a bad deploy is measured in dollars per second.

Key job responsibilities
- Design and implement features for real-time event processing systems handling billions of events per day
- Own end-to-end delivery of software components: requirements design implementation testing deployment and operational support
- Build and maintain distributed systems that process advertising signals (impressions pixels clicks video completions) with low latency at high throughput
- Participate in on-call rotations and operational excellence initiatives to maintain 100% availability (not a typo; lets talk)
- Contribute to architecture decisions for event pipelines caching layers and data transformation services
- Write high-quality maintainable code with thorough unit and integration test coverage
- Collaborate with partner teams across the ad serving stack (bid request creative rendering reporting billing)
- Mentor teammates and participate in code/design reviews

- 3 years of non-internship professional software development experience
- 2 years of non-internship design or architecture (design patterns reliability and scaling) of new and existing systems experience
- 1 years of software development engineer or related occupational experience
- 1 years of designing and developing large-scale multi-tiered multi-threaded embedded or distributed software applications tools systems and services using: C# C Java or Perl experience
- 1 years of Object Oriented Design experience
- Bachelors degree or foreign equivalent in Computer Science Engineering Mathematics or a related field
- Experience programming with at least one software programming language

- 3 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees supervisors and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees supervisors and staff to ensure exceptional customer service; and follow all federal state and local laws and Company policies. Criminal history may have a direct adverse and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above as well as the abilities to adhere to company policies exercise sound judgment effectively manage stress and work safely and respectfully with others exhibit trustworthiness and professionalism and safeguard business operations and the Companys reputation. Pursuant to the Los Angeles County Fair Chance Ordinance we will consider for employment qualified applicants with arrest and conviction records.

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The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at CA Mountain View - 165200.00 - 223600.00 USD annually