FedEx Express Software Development Engineer II Interview Questions and Answers

I am a Senior Software Engineer with 8 years of experience in developing web applications using Java, Spring, and Angular.

• 8 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Experience in leading development teams

• Passionate about learning new technologies

Build a digital stopwatch using HTML, CSS, and JS

• Create HTML structure with buttons for start, stop, and reset

• Use CSS to style the stopwatch display

• Implement JS logic to start, stop, and reset the stopwatch

As a Senior Software Engineer, my day-to-day work involves designing and developing software solutions, collaborating with team members, troubleshooting issues, and staying updated on industry trends.

• Designing and developing software solutions based on project requirements

• Collaborating with team members to discuss project progress and brainstorm solutions

• Troubleshooting and debugging code to fix issues and improve perf...read more

Horizontal scaling involves adding more machines to distribute load, while vertical scaling involves increasing the power of existing machines.

• Horizontal scaling adds more machines to handle increased load

• Vertical scaling increases the power of existing machines

• Horizontal scaling is more cost-effective and easier to implement

• Vertical scaling may have limitations in terms of hardware capabilities

• Examples: Horizontal sca...read more

Load balancer distributes incoming network traffic across multiple servers, while API gateway manages API traffic.

• Load balancer operates at the network layer, distributing traffic based on algorithms like round-robin or least connections.

• API gateway operates at the application layer, providing features like authentication, rate limiting, and caching for APIs.

• Load balancer can balance traffic for any type of application...read more

RESTful API is an architectural style for designing networked applications

• REST stands for Representational State Transfer

• Uses standard HTTP methods like GET, POST, PUT, DELETE

• Resources are identified by URIs

• Stateless communication between client and server

• Responses are typically in JSON or XML format

Checked and unchecked exceptions are used in Java to handle errors. Checked exceptions must be handled, while unchecked exceptions do not.

• Checked exceptions are checked at compile-time and must be handled using try-catch or throws keyword

• Unchecked exceptions are not checked at compile-time and do not require handling

• Example of checked exception: IOException

• Example of unchecked exception: NullPointerException