10+ Senior Engineering Lead Interview Questions and Answers

Display 25 nodes in a single page with sections divided into 5 nodes each

• Create a grid layout with 5 columns and 5 rows

• Assign each node to a specific cell in the grid

• Use pagination or scroll functionality to navigate through the nodes

• Include navigation buttons for easy access to different sections

To export a service from one module to another, you can use dependency injection or module.exports in Node.js.

• Use dependency injection to pass the service instance from one module to another

• Use module.exports in Node.js to export the service as a module and require it in the other module

Design patterns in C# are reusable solutions to common problems in software design.

• Some common design patterns in C# include Singleton, Factory, Observer, and Strategy.

• Design patterns help in creating maintainable and scalable code by providing proven solutions to common design problems.

• For example, the Singleton pattern ensures that a class has only one instance and provides a global point of access to it.

Use input validation, output encoding, and proper escaping to prevent XSS attacks.

• Sanitize user input by validating and filtering all input data.

• Encode output data to prevent malicious scripts from being executed.

• Escape special characters in user input before displaying it on the website.

• Implement Content Security Policy (CSP) to restrict the sources of content that can be loaded on your website.

Python tuple is an immutable collection of ordered elements.

• Tuples are created using parentheses ()

• Elements in a tuple can be of different data types

• Tuples are immutable, meaning their values cannot be changed once set

• Example: my_tuple = (1, 'hello', 3.14)

Various equipments and sensors are used depending on the project requirements.

• Equipment: XYZ model for data collection

• Sensors: Temperature, pressure, motion sensors

• Examples: XYZ equipment with ABC sensor

Our current project architecture follows a microservices approach.

• We use Docker containers to deploy and manage our microservices.

• We have implemented service discovery using Consul.

• We use Kubernetes for orchestration and scaling.

• We have a centralized logging system using ELK stack.

• We use Prometheus for monitoring and alerting.

• We have implemented a CI/CD pipeline using Jenkins.

• We follow the 12-factor app methodology for building and deploying our microservices.

Binary search algorithm efficiently finds the target value in a sorted array.

• Divide the array in half and compare the target value with the middle element.

• If the target value is smaller, search the left half. If larger, search the right half.

• Repeat the process until the target value is found or the subarray is empty.

Cloud technologies refer to services and resources delivered over the internet, allowing users to access and store data remotely.

• Cloud technologies include Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).

• Examples of cloud services are Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

• Cloud services offer scalability, flexibility, and cost-effectiveness for businesses.

• Common cloud services include storage, ...read more

The question covers topics related to object-oriented programming, SQL joins, and previous projects.

• Demonstrate understanding of object-oriented programming principles such as encapsulation, inheritance, and polymorphism

• Explain how SQL joins work and demonstrate ability to write complex join queries

• Discuss previous projects worked on, highlighting key achievements and challenges faced

AHU stands for Air Handling Unit, used to regulate and circulate air in HVAC systems.

• AHUs are used in HVAC systems to regulate and circulate air throughout a building.

• They typically consist of a blower, heating or cooling elements, filters, and dampers.

• AHUs can be used in various settings such as commercial buildings, hospitals, and industrial facilities.

• Regular maintenance of AHUs is important to ensure efficient operation and indoor air quality.

Creating a model of equipment involves understanding its components, functions, and interactions.

• Identify the key components of the equipment

• Understand the functions and purposes of each component

• Consider the interactions between components

• Use appropriate modeling techniques such as CAD or 3D printing

• Ensure accuracy and precision in the model

Apache Joins js performance

• Apache joins are used to combine data from two or more tables based on a related column between them

• Joins in Apache Spark can be performed using functions like join(), crossJoin(), etc.

• Optimizing performance in Apache Spark involves tuning parameters like partitioning, caching, and parallelism

Azure is a cloud computing platform by Microsoft.

• Azure offers a wide range of services such as virtual machines, databases, AI, and IoT.

• It provides scalability, flexibility, and cost-effectiveness for businesses.

• Azure has data centers located worldwide for global reach and compliance.

• Popular Azure services include Azure Virtual Machines, Azure SQL Database, and Azure Cognitive Services.

Using webAPI to retrieve responses

• Utilize RESTful APIs to interact with web services

• Implement HTTP methods like GET, POST, PUT, DELETE

• Handle authentication and authorization for secure access

Inheritance in OOP allows a class to inherit properties and behavior from another class.

• Inheritance promotes code reusability

• Base class is also known as parent class or super class

• Derived class is also known as child class or sub class

• Derived class can access all public and protected members of base class

• Example: class Car extends Vehicle