Software Development Engineer II, Pre Station Planning Technology

Amazon

Global e-commerce and technology company operating retail websites worldwide, known for superior convenience, selection, and customer service.

Bengaluru, Karnataka, India

Backend

Mid-Level Software Engineer

In-Person

5,000+ Employees

3+ years of experience

Logistics · Enterprise SaaS

Description For Software Development Engineer II, Pre Station Planning Technology

Amazon's Last Mile Planning team, within the LMT organization, is seeking a Software Development Engineer II for their Pre Station Planning Technology team. This role is crucial in supporting Amazon's worldwide Last Mile operations, focusing on building sophisticated software systems for demand forecasting, capacity planning, and fleet management.

The position offers an opportunity to work on systems that directly impact the delivery of billions of packages to customers worldwide. You'll be part of a team that develops ML and operations research-based routing algorithms, in-house maps and navigation platforms, IoT innovations, and consumer-grade mobile apps.

As an SDE II, you'll be responsible for creating efficient route, station, and capacity plans that operations uses for package delivery. The role involves working with cutting-edge technology to solve complex logistics challenges and requires strong technical skills in software development and system architecture.

The ideal candidate will have experience in professional software development, system design, and architecture. You'll be working in an environment that values innovation and customer-centric solutions, with the opportunity to make a significant impact on Amazon's global logistics network.

This position offers the chance to work with one of the world's leading technology companies, solving real-world problems at scale. You'll be part of a team that's essential to Amazon's logistics infrastructure, working on projects that directly affect the customer experience and operational efficiency.

Last updated 2 minutes ago

Responsibilities For Software Development Engineer II, Pre Station Planning Technology

Own and deliver highly visible, innovative projects that impact customer experience
Drive technical and architectural vision for the planning team
Participate in all aspects of software development cycle
Work on demand forecasting and capacity planning systems
Develop jurisdiction and topology management solutions
Build fleet planning software

Requirements For Software Development Engineer II, Pre Station Planning Technology

3+ years of non-internship professional software development experience
2+ years of non-internship design or architecture experience
3+ years of Video Games Industry experience
Experience programming with at least one software programming language
Knowledge of design patterns, reliability and scaling of systems

Amazon

Global e-commerce and technology company operating retail websites worldwide, known for superior convenience, selection, and customer service.

Bengaluru, Karnataka, India

Backend

Mid-Level Software Engineer

In-Person

5,000+ Employees

3+ years of experience

Logistics · Enterprise SaaS

Amazon

Find the contiguous subarray with the largest sum.

Data Structures & AlgorithmsMedium

You are given an array of integers. Write a function to find the contiguous subarray with the largest sum and return that sum. For example: Given the array [-2, 1, -3, 4, -1, 2, 1, -5, 4], the contiguous subarray [4, -1, 2, 1] has the largest sum = 6. Given the array [1, 2, 3, 4, 5], the contiguous subarray [1, 2, 3, 4, 5] has the largest sum = 15. Given the array [-1, -2, -3], the contiguous subarray [-1] has the largest sum = -1. Your function should be efficient and handle arrays with both positive and negative numbers. Explain the time complexity of your solution. Can you implement this using dynamic programming? Are there other approaches? Discuss the tradeoffs of the various potential solutions.

Arrays

Dynamic Programming

Amazon

How would you implement a service like Twitter?

System DesignHard

Let's design a Twitter-like service. Consider the following: Core Functionality: How would you implement the ability for users to post tweets, follow other users, and view a timeline of tweets from the users they follow? Data Model: What database schema would you use to store tweets, user information, and follower relationships? Consider scalability and efficiency for reads and writes. Scalability: How would you handle a large number of users and tweets? Discuss strategies for sharding, caching, and load balancing. Real-time Updates: How would you ensure that users see new tweets in their timeline in near real-time? Consider using technologies like WebSockets or Server-Sent Events. Search: How would you implement a search feature that allows users to find tweets containing specific keywords or hashtags? Think about indexing strategies and search algorithms. Rate Limiting: How would you prevent abuse and ensure fair usage of the service? Describe your approach to rate limiting API requests. Example Scenario: Imagine a user, Alice, follows 1,000 other users, including Bob. Bob posts a tweet. Explain how that tweet would propagate to Alice's timeline, considering potential performance bottlenecks. Technology Stack: What technologies (programming languages, frameworks, databases, etc.) would you choose and why?

Database Problems

Graphs

Arrays

Strings

Amazon

Describe a time when a plan did not go as expected

Behavioral

Describe a time when a plan did not go as expected.

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