Senior Software Engineer - Low-Latency Delivery

o:  |  Services LLC

Do you want to shape how fast Amazon can deliver to hundreds of millions of customers? The Sub-Same-Day (SSD) team builds the technology behind Amazon's fastest delivery promises across India and Emerging Marketplaces — getting orders to customers in hours, not days.

We're looking for a Software Development Engineer II who wants to own high-scale, low-latency systems that directly move the speed and reliability customers see 'll design and build services that compute and optimize the fastest reliable delivery promise for every order.

-Build customer-facing systems at massive scale and single-digit-millisecond latency
-Own features end-to-end, from design through production and operations
-Directly impact conversion, delivery speed, and customer trust across 10+ marketplaces

Key job responsibilities
-Design, build, and operate scalable, low-latency, highly available services that power SSD delivery promises.
-Own features end-to-end — requirements, design, implementation, testing, deployment, and ongoing operations.
-Lead design discussions and independently drive alignment with partner teams (Promise, transportation, search etc. ).
-Uphold operational excellence: monitoring, alarming, on-call, and driving down defects and tickets.
-Dive deep on edge cases, testing, and safe production rollouts (canary deployments, metrics, dashboards).
-Proactively identify and mitigate risks; communicate progress, blockers, and tradeoffs clearly.
-Mentor SDE-1s and junior engineers — review code and designs, unblock them, and raise the technical bar.
-Contribute to the team's technical roadmap and continuous improvement of our systems.

A day in the life
You'll partner with product managers, applied scientists, and engineering teams across Promise, ATROPS, transportation, and DEX to ship features that make delivery faster and more reliable. A typical day includes a team standup, design and code reviews, hands-on development, and digging into production metrics. You'll take part in operational excellence and on-call to keep our services healthy. Beyond delivery, we invest in learning and fun — quarterly hackathons and fortnightly GenAI brown-bag sessions where the team explores new technology together.

About the team
The Sub-Same-Day (SSD) team owns the technology behind Amazon's fastest delivery experiences across India and Emerging Marketplaces (AU,  , MX, AE, SA, SG, EG, TR, ZA). Our mission is to give every customer the fastest reliable promise we can keep — and to extend same-day and sub-same-day speed to new marketplaces and customers. We're a high-ownership, customer-obsessed team that values deep technical work, operational excellence, and continuous learning.

We move fast, support each other, and celebrate wins together.

- 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
- Bachelor's 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
- Bachelor's degree in computer…