Avalara Technologies Interview Questions and Answers for Experienced

A comprehensive system flow for a pizza shop from order placement to delivery.

• Customer places an order via phone, website, or app.

• Order details are captured: type of pizza, size, toppings, and delivery address.

• Payment is processed through secure methods (credit card, PayPal, etc.).

• Order is sent to the kitchen for preparation.

• Pizza is prepared, baked, and packaged for delivery.

• Delivery driver is assigned and picks ...read more

A Binary Search Tree (BST) is a data structure that maintains sorted order for efficient searching, insertion, and deletion.

• A BST is a binary tree where each node has at most two children.

• For any given node, all values in the left subtree are less, and all values in the right subtree are greater.

• Example: Inserting values 10, 5, 15 creates a tree with 10 as root, 5 as left child, and 15 as right child.

• BST operation...read more

Design patterns are reusable solutions to common software design problems, enhancing code maintainability and scalability.

• Creational patterns (e.g., Singleton, Factory Method) manage object creation.

• Structural patterns (e.g., Adapter, Composite) deal with object composition.

• Behavioral patterns (e.g., Observer, Strategy) focus on communication between objects.

• Design patterns promote best practices and improve code ...read more

Handling escalations involves addressing urgent issues promptly and effectively to ensure customer satisfaction and operational efficiency.

• Prioritization: I assess the urgency of the escalation and prioritize it based on its impact on the business and customer satisfaction.

• Clear Communication: I maintain open lines of communication with the customer, providing updates and setting realistic expectations throughout ...read more

GraphQL is a query language for APIs that allows clients to request only the data they need, while REST is an architectural style for designing networked applications.

• GraphQL allows clients to request specific data in a single request, reducing over-fetching and under-fetching.

• REST uses multiple endpoints for different resources, leading to multiple requests for related data.

• GraphQL provides a strongly typed schem...read more

Calculate the integer square root of a given number.

• Use binary search to find the square root within the given constraints.

• Start with a range of 0 to N, and adjust the range based on the square of mid value.

• Return the integer part of the square root as the final result.