Job Description

Do you want to directly impact how millions of Japanese customers receive their Amazon deliveries? Do you enjoy solving complex optimization problems that reduce cost while preserving — or improving — the customer experience?

The Japan Delivery Experience (JP DEX) team is part of Amazon's Japan Store Tech organization, based in Tokyo. We own the logic that filter, group, default, and split delivery options across the Amazon Japan retail website — from browse and search pages through checkout. Our work touches every customer order flowing through Amazon.co.jp.

We focus on consolidation initiatives — finding ways to intelligently combine shipments and optimize delivery scheduling to reduce delivery costs without compromising speed or customer satisfaction. Our systems operate at massive scale, processing delivery option decisions for millions of transactions.

We're looking for an SDE-I who is curious, thinks big, and wants to own real customer-facing systems from day one. You'll work on distributed systems that directly influence how delivery options are presented to customers, building and operating services that handle high-throughput, low-latency decision-making in a complex logistics domain.

Key job responsibilities
Your primary responsibilities are designing, developing, testing, deploying, and maintaining distributed software solutions independently. These solutions range across technical stacks and domain, from web applications and backend services, to cloud architecture and machine learning. You will work directly with technical and business teams, locally and worldwide, to understand business problems and design solutions.

A day in the life
An average day may look like:
- Attend daily standup either in person or remotely to give status updates
- Work on a technical design document to drive consensus between the internal team and stakeholders
- Spend uninterrupted time developing software
- Learn about a new cloud technology - Experience with one or more of the following:
- o AI tools for development productivity
- o Cloud platforms (preferably AWS)
- o Database systems (SQL and NoSQL)
- o Contributing to open-source projects
- o Version control systems
- o Debugging and troubleshooting complex systems
- Strong problem-solving and analytical skills
- Excellent written and verbal communication skills
- Demonstrated ability to learn and adapt to new technologies quickly
- Basic understanding of software development lifecycle (SDLC)

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.