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Ericsson Principal Engineer Interview Questions and Answers
Ericsson Principal Engineer Interview Experiences
1 interview found
Anonymous
(1 Question)
- Q1. Basic of data structures
What people are saying about Ericsson
Interview questions from similar companies
Ayush Goel
Selected
I applied via Referral and was interviewed in Apr 2023. There were 4 interview rounds.
(16 Questions)
- Q1. Explain your overall and relevant experience
- Q2. What all OSS and BSS systs you know or worked on
- Ans.
I have experience working with OSS and BSS systems such as NetCracker, Amdocs, and CSG.
NetCracker
Amdocs
CSG
- Q3. Give an example of an E2E process flow across OSS and BSS
- Ans.
End-to-end process flow across OSS and BSS involves order management, service activation, billing, and customer care.
Order is placed by customer through self-service portal or customer service representative in OSS
Order is validated, processed, and provisioned in OSS
Service activation triggers in BSS, updating customer account and billing information
Billing system generates invoice based on service usage and sends to c...
- Q4. Explain your experience on specific OSS and/or BSS systems
- Ans.
I have extensive experience working with OSS and BSS systems in the telecommunications industry.
Implemented and maintained OSS/BSS systems for network inventory management
Developed custom solutions for billing and customer management using OSS/BSS platforms
Integrated OSS/BSS systems with third-party applications for seamless operations
- Q5. Explain what all communication technologies and protocols you have worked and where they fit in OSI layers
- Ans.
I have worked with various communication technologies and protocols across different OSI layers.
TCP/IP - fits in transport layer
HTTP - fits in application layer
Ethernet - fits in data link layer
SMTP - fits in application layer
UDP - fits in transport layer
- Q6. Do you know about TMF standards, which ones you have used
- Ans.
Yes, I am familiar with TMF standards and have used them in previous projects.
I have used TMF Reference Model for organizing and managing clinical trial documentation
I am familiar with TMF structure and content requirements
I have experience in implementing TMF standards to ensure compliance with regulatory guidelines
- Q7. Any whitepaper you have written?
- Ans.
Yes, I have written a whitepaper on the implementation of machine learning algorithms in cybersecurity.
Researched various machine learning algorithms commonly used in cybersecurity
Analyzed the effectiveness of different algorithms in detecting and preventing cyber threats
Discussed practical implementation strategies for integrating machine learning into existing cybersecurity systems
- Q8. Any automation experience?
- Ans.
Yes, I have extensive experience in automation including scripting, testing, and deployment.
Developed automation scripts using tools like Selenium, Jenkins, and Puppet
Implemented automated testing frameworks to improve efficiency and accuracy
Utilized automation for continuous integration and deployment processes
Experience with scripting languages such as Python, Bash, and PowerShell
- Q9. Explain which SDLC you have worked on and where do you fit in it?
- Ans.
I have worked on the Agile SDLC and primarily function as a Scrum Master.
I have experience working in Agile environments, specifically using Scrum methodology.
I have led daily stand-up meetings, sprint planning sessions, and retrospectives.
I have collaborated with cross-functional teams to deliver high-quality software products on time.
I have used tools like Jira and Trello to track progress and manage tasks.
- Q10. What are you roles and responsibilities, including deliverables.
- Q11. Any example of crisis you single handedly resolved in your project?
- Q12. Explain about any Telecom standard product you have worked on.
- Q13. Any patents you have registered?
- Ans.
Yes, I have registered two patents related to renewable energy technologies.
Patent 1: Solar panel design for increased efficiency
Patent 2: Wind turbine blade design for improved performance
- Q14. Any experience on cloud?
- Ans.
Yes, I have extensive experience working with cloud technologies such as AWS, Azure, and Google Cloud.
Experience in designing and implementing cloud infrastructure
Proficient in using cloud services such as EC2, S3, and RDS
Knowledge of cloud security best practices
Experience with cloud automation tools like Terraform and Ansible
- Q15. Any experience on devOps?
- Ans.
Yes, I have experience with devOps in previous roles.
Implemented CI/CD pipelines to automate software delivery processes
Utilized tools like Jenkins, Git, Docker, and Kubernetes for deployment and monitoring
Worked closely with development and operations teams to streamline workflows
- Q16. Any experience on REST API and Microservices?
- Ans.
Yes, I have experience with REST API and Microservices.
Developed RESTful APIs using Node.js and Express framework
Implemented Microservices architecture using Docker and Kubernetes
Utilized Swagger for API documentation and testing
Worked on integrating third-party APIs in microservices architecture
(3 Questions)
- Q1. Explain your overall and relevant experience
- Q2. Why do you want to join Verizon?
- Q3. If you are coming from a telecom company, how do you compare its way of doing business with Verizon?
- Ans.
Telecom company vs Verizon comparison for Principal Engineer role
Telecom companies may have a more traditional approach to business operations compared to Verizon's focus on innovation and technology
Verizon may have a stronger emphasis on customer service and satisfaction
Verizon's network infrastructure and technology advancements may be more advanced compared to some telecom companies
Verizon's corporate culture and va...
(3 Questions)
- Q1. Expected CTC, if greater than 30%, justify
- Ans.
Expected CTC should be justified if greater than 30%
Highlighting additional skills or experience that justify the higher salary
Explaining the market demand for the role and the competitive salary range
Demonstrating the value you bring to the company that justifies the higher compensation
- Q2. Notice Period, whether negotiable?
- Q3. Reason for job change?
Interview Preparation Tips
Skills evaluated in this interview
(2 Questions)
- Q1. Questions related to coroutines
- Q2. Questions related to Android Architecture Components
Interview Preparation Tips
Selected
I applied via Referral and was interviewed in Apr 2023. There were 4 interview rounds.
(16 Questions)
- Q1. Explain your overall and relevant experience
- Q2. What all OSS and BSS systs you know or worked on
- Ans.
I have experience working with OSS and BSS systems such as NetCracker, Amdocs, and CSG.
NetCracker
Amdocs
CSG
- Q3. Give an example of an E2E process flow across OSS and BSS
- Ans.
End-to-end process flow across OSS and BSS involves order management, service activation, billing, and customer care.
Order is placed by customer through self-service portal or customer service representative in OSS
Order is validated, processed, and provisioned in OSS
Service activation triggers in BSS, updating customer account and billing information
Billing system generates invoice based on service usage and sends to c...
- Q4. Explain your experience on specific OSS and/or BSS systems
- Ans.
I have extensive experience working with OSS and BSS systems in the telecommunications industry.
Implemented and maintained OSS/BSS systems for network inventory management
Developed custom solutions for billing and customer management using OSS/BSS platforms
Integrated OSS/BSS systems with third-party applications for seamless operations
- Q5. Explain what all communication technologies and protocols you have worked and where they fit in OSI layers
- Ans.
I have worked with various communication technologies and protocols across different OSI layers.
TCP/IP - fits in transport layer
HTTP - fits in application layer
Ethernet - fits in data link layer
SMTP - fits in application layer
UDP - fits in transport layer
- Q6. Do you know about TMF standards, which ones you have used
- Ans.
Yes, I am familiar with TMF standards and have used them in previous projects.
I have used TMF Reference Model for organizing and managing clinical trial documentation
I am familiar with TMF structure and content requirements
I have experience in implementing TMF standards to ensure compliance with regulatory guidelines
- Q7. Any whitepaper you have written?
- Ans.
Yes, I have written a whitepaper on the implementation of machine learning algorithms in cybersecurity.
Researched various machine learning algorithms commonly used in cybersecurity
Analyzed the effectiveness of different algorithms in detecting and preventing cyber threats
Discussed practical implementation strategies for integrating machine learning into existing cybersecurity systems
- Q8. Any automation experience?
- Ans.
Yes, I have extensive experience in automation including scripting, testing, and deployment.
Developed automation scripts using tools like Selenium, Jenkins, and Puppet
Implemented automated testing frameworks to improve efficiency and accuracy
Utilized automation for continuous integration and deployment processes
Experience with scripting languages such as Python, Bash, and PowerShell
- Q9. Explain which SDLC you have worked on and where do you fit in it?
- Ans.
I have worked on the Agile SDLC and primarily function as a Scrum Master.
I have experience working in Agile environments, specifically using Scrum methodology.
I have led daily stand-up meetings, sprint planning sessions, and retrospectives.
I have collaborated with cross-functional teams to deliver high-quality software products on time.
I have used tools like Jira and Trello to track progress and manage tasks.
- Q10. What are you roles and responsibilities, including deliverables.
- Q11. Any example of crisis you single handedly resolved in your project?
- Q12. Explain about any Telecom standard product you have worked on.
- Q13. Any patents you have registered?
- Ans.
Yes, I have registered two patents related to renewable energy technologies.
Patent 1: Solar panel design for increased efficiency
Patent 2: Wind turbine blade design for improved performance
- Q14. Any experience on cloud?
- Ans.
Yes, I have extensive experience working with cloud technologies such as AWS, Azure, and Google Cloud.
Experience in designing and implementing cloud infrastructure
Proficient in using cloud services such as EC2, S3, and RDS
Knowledge of cloud security best practices
Experience with cloud automation tools like Terraform and Ansible
- Q15. Any experience on devOps?
- Ans.
Yes, I have experience with devOps in previous roles.
Implemented CI/CD pipelines to automate software delivery processes
Utilized tools like Jenkins, Git, Docker, and Kubernetes for deployment and monitoring
Worked closely with development and operations teams to streamline workflows
- Q16. Any experience on REST API and Microservices?
- Ans.
Yes, I have experience with REST API and Microservices.
Developed RESTful APIs using Node.js and Express framework
Implemented Microservices architecture using Docker and Kubernetes
Utilized Swagger for API documentation and testing
Worked on integrating third-party APIs in microservices architecture
(3 Questions)
- Q1. Explain your overall and relevant experience
- Q2. Why do you want to join Verizon?
- Q3. If you are coming from a telecom company, how do you compare its way of doing business with Verizon?
- Ans.
Telecom company vs Verizon comparison for Principal Engineer role
Telecom companies may have a more traditional approach to business operations compared to Verizon's focus on innovation and technology
Verizon may have a stronger emphasis on customer service and satisfaction
Verizon's network infrastructure and technology advancements may be more advanced compared to some telecom companies
Verizon's corporate culture and va...
(3 Questions)
- Q1. Expected CTC, if greater than 30%, justify
- Ans.
Expected CTC should be justified if greater than 30%
Highlighting additional skills or experience that justify the higher salary
Explaining the market demand for the role and the competitive salary range
Demonstrating the value you bring to the company that justifies the higher compensation
- Q2. Notice Period, whether negotiable?
- Q3. Reason for job change?
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
Array problems and question on your existsing system
I applied via Naukri.com and was interviewed in Jun 2022. There were 3 interview rounds.
(4 Questions)
- Q1. Core Java,Colkections, Multithreading, Exception Handling
- Q2. Java8,Function Interface, Optional and streaming API
- Q3. Two Coding questions on LinkedList and Array
- Q4. SQL queries and Aggregate Functions
(4 Questions)
- Q1. Data Structure Related questions
- Q2. High Level design and scinario based questions
- Q3. Design pattern and Microservices
- Q4. Spring boot and Hibernate
(2 Questions)
- Q1. General Discussion Personal,Family Details
- Q2. Salary Discussion and Employee Benefits
Interview Preparation Tips
- Java
- Spring
- Spring Boot
- JPA
- Hibernate
- Microservices
- Data Structures
- Design Patterns
- Coding
- SQL
Interview Questionnaire
6 Questions
- Q1. 1. sort a stack without auxillary space
- Ans.
Sort a stack without auxiliary space
Use recursion to pop elements from stack and insert them in sorted order
Compare the top element with the next element and swap if necessary
Repeat until stack is sorted
- Q2. 2. design and write production code of thread pool
- Ans.
A thread pool is a group of threads that can be reused to execute multiple tasks concurrently.
Define a task interface that encapsulates the work to be done
Create a queue to hold tasks
Create a fixed number of threads in the pool
Each thread should loop indefinitely, taking tasks from the queue and executing them
Use synchronization primitives to ensure thread safety
Consider using a thread-safe data structure for the task ...
- Q3. 3. singleton implementation thread safe
- Q4. Shared and unique ptr implementation
- Ans.
Shared and unique pointer implementation in C++
Shared pointers allow multiple pointers to refer to the same object, automatically deleting the object when the last pointer is destroyed.
Unique pointers allow only one pointer to refer to an object, automatically deleting the object when the pointer is destroyed.
Shared pointers use reference counting to keep track of the number of pointers referring to an object.
Unique po...
- Q5. Given the frequency of three letters 'a' 'b' and 'c'..form the largest string by using a,b, and c provided 3 (a , b or c )cant be together and the possible string should be largest.
- Ans.
Form the largest string using a, b, and c with the condition that 3 (a, b, or c) can't be together.
Start with the most frequent letter and alternate with the other two.
If there are two letters with the same frequency, start with the one that has the least number of adjacent letters.
Example: 'abcabcab' is not valid, but 'abacbac' is valid and larger.
- Q6. Ex1 ) dict = {'abab' , 'aba', 'xyz', 'xyx'} pattern {'aba'} output {'aba' , 'xyx'} , ex 2) dict = {'abb' , 'abc' , 'xyz', 'xyy'} paatern {'mno'} output {abc , xyz} ...
- Ans.
Code to find strings in a dictionary matching a given pattern
Iterate through the dictionary and check if each string matches the pattern
Add the matching strings to an output array
Return the output array
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before Feb 2020. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. About DBVs nd DVBc
- Q2. Ird, Encoder, Cas, Scrambling, Psi/si, EMM, ECM, RF
- Q3. Stb, Epg, Manual testing, Excel
- Q4. Switch, Networking,
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Ericsson Principal Engineer Interview Process
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