UpLevel will be your all-in-one learning platform to get you FAANG-ready, with 1000+ interview questions, timed tests, videos, mock interviews suite, and more.
Mock interviews suite
On-demand timed tests
In-browser online judge
1000 interview questions
100,000 hours of video explanations
Class schedules & activity alerts
Real-time progress update
12 programming languages
What makes our mock interviews the best:
What makes our mock Interviews the best:
Hiring managers from Tier-1 companies like Google & Apple
Interview with the best. No one will prepare you better!
Practice for your target domain
Detailed personalized feedback
Identify and work on your improvement areas
Transparent, non-anonymous interviews
Get the most realistic experience possible
More about mock interviews
Meet your instructors
Our highly experienced instructors are active hiring managers and employees at FAANG+ companies and know exactly what it takes to ace tech and managerial interviews.
Head of Curriculum
15+ years experience
Head of Career Skills Devp. and Coaching
10+ years experience
15+ years experience
6+ years experience
Senior Software Engineer
15+ years experience
Tech professionals trained
Highest offer received by an IK alum
Average salary hike received by alums
Our engineers land high-paying and rewarding offers from the biggest tech companies, including Meta, Google, Microsoft, Apple, Amazon, Tesla, and Netflix.
Senior Software Engineer
IK’s back-end engineering program helped me learn helpful nuances in programming and understandthe fundamentals of system design. The instructors from FAANG companies were inspiring. The mock interviews are also very helpful to get exposed to interviewing experience.
Senior Software Engineer
I joined iK after stumbling across it while reviewing some other interview prep materials after doing poorly in an interview at Linkedin. I knew that doing well in these interviews would require dedication and investment of my time - but with so many resources online I didn't have structure. This is what the IK platform provided me.
Software development Engineer ll
The Interview Kickstart course is very structured and informative. They teach you about DS and algo fundamentals very thoroughly and also prepare you for the software engineering interview. I really like the live classes by FAANG engineers, and the homework and tests definitely help you toprepare for a real interview. If you have been looking for a bootcamp that prepares you for software engineering interviews, I would say this is definitely the right place to do it.
Senior Software Engineer
My experience at IK was extremely positive. I was preparing for FAANG companies using the standard techniques that you find on the internet. When I started preparing, there was no structure to the madness. For example, a simple quicksort can be implemented in multiple ways. So solving a medium problem would take me about 30 minutes. The biggest benefit that I got from IK was a clear, structured way of solving problems. After IK, I could solve medium problems in 10 minutes!
IK is super helpful in cementing a lot of the basics and developing a deeper understanding of the core concepts that are essential to the interview process at any FAANG company. The foundation material is dense, but it is discussed at a swift pace. Omkar's instructional videos are very detailed and break down the essentials into small digestible components. The mock interview sessions are super helpful, especially for those who need additional guidance and help with defining their shortcomings.
Interview Kickstart is a great platform to perfect your basics and get a deep understanding of algorithms. These sessions helped me crack Google and several other companies.
Having struggled for a while to understand what I was doing wrong in interviews and how to behave during an interview, I took the help of 1-1 interview sessions with the mentors and the guidance provided by them helped me understand the problem with my approach.
How to enroll?
Join our Free Webinar hosted by Ryan Valles, co-founder of Interview Kickstart, to understand the enrollment process and get answers to all your questions about tech interviews.
Generally, the interview process for back-end engineers is divided into the following segments:
The hiring recruiter will contact you by phone to discuss his or her work experience. The recruiter will determine which roles you are qualified for based on your work experience. Knowing which projects and experiences you want to talk about before going into the interview can be helpful.
After going through this round, you should receive a follow-up email from the recruiter that will include an online technical assessment.
This interview is an online screening of your programming skills. You will have about 90 minutes to complete three coding challenges similar to Leetcode. In each challenge, you will be tested on data structures and algorithms. It is important that you write compiling code and pass the majority of the test cases shown in the UI.
To prepare for this round, you should:
Be thorough with data structures and algorithms in a particular language (IE python, java, etc.)
Revise space and time complexities
Practice problems online on websites like Leetcode
Final interview stage
This round consists of 4-6 interviews of one-hour each. These rounds are as follows:
2- 3 technical programming interviews
1-2 system design interview
One behavioral interview
Technical Programming Interviews
These interviews will each consist of one programming challenge, where you will be given a coding challenge similar to the ones in the online assessment, but this time with an actual SDE.
The challenges will test your knowledge of data structures, algorithms, and OOP. During the problem-solving stage, you will be asked about test cases, time/space complexity, and ways to improve the solution.
Using an online coding practice website like Leetcode to prepare for the back-end engineer interview questions on tech programming can be extremely beneficial. While practicing, make sure to include questions about algorithms, data structures, and object-oriented programming.
System Design Interview
This section will be with a Hiring Manager or principal engineer who will test your system design skills. An example of a system design question could be “Design Instagram,” in which you should:
Dive into the requirements and assumptions
Layout the architecture
Define some databases
Define some APIs
Define performance-related parts of your design
This section is about designing the software rather than coding it. However, depending on the problem, you may have to pseudo-code at times.
To prepare for the back-end engineer interview questions on system design, you should practice software design. You should understand servers, caching, performance-related topics, databases, APIs, etc.
A "Bar Raiser" conducts this back-end engineer interview on behavioral skills, which is primarily about the experience and how one can relate to specific behavioral topics and scenarios. In an Amazon interview, for example, you will be asked behavioral questions about their leadership principles, and the interviewer will assess whether or not your answers align with the company's values.
You should prepare for this section by understanding Amazon’s 16 Leadership Principles and how your experience relates to them. Also, when you are explaining your solution, try to use the STAR (situation, task, action, and result)method to break down your answer.
After the final round of back-end engineer interview questions, you should hear back within two weeks. During the interview, your technical skills and behavioral responses will be compared to the technical competencies of the role, as well as the principles of the company, to see if you’re a good fit.
Back-end developer interview questions for beginners evaluate the basic understanding of different programming languages. The difficulty level of questions keeps increasing as per your experience level. Advanced back-end engineering interview questions are focused on the framework of back-end development, technologies, languages, etc.
How will you implement indexing for all the payments for an e-commerce application?
Design an API for a weather application using REST and non-REST architecture styles
How to test an API for security threats? Understanding the threats and then working on steps to prevent security threats: XSS, CSRF, SQL injection, input sanitization.
Build a mathematical library for a computer algebra system like Mathematica
What properties govern transaction reliability? What are the characteristics of data inconsistency? What is transaction isolation, and how would you use it for concurrency control?
Back-End Engineering Interview Questions on Behavioral Skills
Tell us about a time when you received criticism about your work and how you handled it.
If you have to deliver negative feedback to members of your development team, how would you do it?
Tell me about your favorite development project to date and what it was like from start to finish.
Describe a conflict you had with your manager or team member.
How would you handle dependencies in cross-functional teams?
Back-End Engineering Career
Deciding to be a back-end engineer can be an exciting and rewarding career choice. However, before that, you’ll need to first learn all there is to know about the role and then start preparing for the back-end engineer interview.
Back-End Engineering Job Roles and Responsibilities
Back-end developers build programs and establish workflows that are focused on how a web application works. Then, they lay the code that powers web applications with functionality and logic. Back-end programming requires a tech stack consisting of servers, libraries, applications, and databases.
Even though the specific responsibilities of back end developers may vary from company to company, their key responsibilities include:
Working on server-side logic and outward-facing web application elements
Optimizing the applications for maximum speed and scalability
Designing data storage solution
Developing content management system and maintaining the same
Troubleshooting and debugging applications
Creating reusable code and libraries for future use
Write code and tests, build prototypes, solve issues, profile and analyze bottlenecks
Design robust APIs that support mobile and desktop clients
To understand the different roles of a back-end developer better, here’s how the responsibilities change as you move up the ladder:
Junior Backend developer
Has approximately 1-2 years experience and basic programming foundations. The roles and responsibilities of an entry-level back-end engineer involve:
Collaborating with other developers to plan and build features for current products.
Contributing to the design and architecture of the application servers, Enhance analytics and overall backend architecture for better performance.
Write high-quality, structured application/interface code, and documentation and take part in code review procedures to find security vulnerabilities or poor code quality issues before new code is made available to the public
Create and consume RESTful APIs.
Design, develop, and maintain internal and external applications. Build efficient, testable, and reusable modules.
Identify solutions through research and collaboration that resolves the root of problems as they arise.
Senior Backend developer
Has approximately 2-8 years of experience and is responsible for server-side web application logic and integration of the work front-end developers do. The roles and responsibilities of a senior-level back-end engineer involve:
Developing new features and functionality for various pages in an application
Continuously improving, refactoring, and modernizing the existing codebase
Monitoring quality, optimizing performance, and developing test coverage and methodologies for continuous code release
Understand architectural patterns of large, high-scale web applications, such as well-designed APIs, high-volume data pipelines, and design efficient algorithms.
Work with the product managers, the technical leads, the experience designers, and other software developers to do research, and implement various workflows.
Implement the cloud and microservices stack, connecting cloud platforms and tools to partner and customer ecosystems
Design, prototype, implement, test, and troubleshoot backend workflows according to market requirements and product specifications
Lead Backend Developer
Has an experience of 8+ years of experience and acts as a technology professional who guides projects and manages development teams. They've often experienced experts with lots of industry knowledge and skills that qualify them to mentor teams and communicate with others outside their department. The roles and responsibilities of a senior-level back-end engineer involve:
Participate in the design, implementation, and testing of distributed systems in an agile environment. Decompose high-level and complex requirements into task-level work for themselves and others on the team.
Ability to understand and build complex systems to solve challenging analytical problems, complete research activities for new features and enhancements, and contribute to design and code reviews
Engage in engineering culture to consistently deliver value to our customers and business
Lead, coach, mentor, and work with other developers to design and implement secure, scalable, highly available services using our core web technologies.
Make recommendations for the development and implementation of complex projects that require comprehensive and in-depth analysis and understanding of the client’s requirements.
Design and Develop Highly Scalable, Available microservices using Microservices Architecture.
Build APIs and services that support both mobile apps offered by CVSHealth and are used internally.
Migrate on-prem web applications and backend services to the cloud.
Drive best practice, quality, and consistency within design and development phases
Contributing to team meetings, troubleshooting development and production problems across multiple environments and operating platforms
Staff Backend developer
Has an experience over a range of 10-15+ years and works on the technical team at an organization, to decode, design, develop, and maintain company backend systems and servers to ensure an efficient user experience.
Plays a leadership role in maintaining and improving the web stack, data architecture, build, deploy & test, software lifecycle, and platform scalability
Leading the development of internal and administrative tools required for products to scale
Be the technical leader for the team of engineers building best-in-class software
As a self-motivated and enthusiastic member of the team, collaborate with extremely smart and proficient peers leading and designing solutions with a strong background in distributed systems, and large-scale database systems.
Work in an agile environment with a focus on problem-solving and engineering perfection. As a technical lead, A staff backend developer is expected to assess business problems, design optimal solutions, and drive implementation to meet the business expectations.
Collaborate closely with peers, Architects, Product Managers, Business Analysts, Quality Engineers, and Operations teams to develop innovative solutions that meet functional and non-functional standards and expectations.
As a staff backend engineer, you will guide junior and senior engineers in your team and also across domain teams in building scalable, high-speed, distributed applications and advocate for meeting the design and quality standards.
More responsibilities are added to your job description as you gain experience and knowledge. Companies use levels to represent this ascension. Companies essentially determine job levels to classify tasks such as compensation structure, leadership, and accountability.
The software engineer levels at FAANG companies are
Netflix: Unlike other FAANG companies, there is only one level on the ladder of progression for software engineers. The company strictly hires only experienced employees; thus, the Netflix senior software engineer position is the only level.
As we’ve mentioned above, Netflix doesn’t have different levels for software engineers. The company only hires senior software engineers, and the average salary of a Netflix software engineer is estimated to be $511K (excluding bonus).
However, this value varies as per the office location, the seniority of the employee, and years of experience. An overview of total compensation received by Netflix software engineers: