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Airtel Africa Lead Engineer Interview Questions and Answers
Airtel Africa Lead Engineer Interview Experiences
1 interview found
Anonymous
I applied via Recruitment Consulltant and was interviewed before Sep 2021. There were 4 interview rounds.
(2 Questions)
- Q1. Spark architecture Yarn Architecture map and reduce functions Python DS/Algo - leetcode easy to medium level.
- Q2. Hive file formats - differences between row and columnar file format
- Ans.
Row and columnar file formats in Hive differ in the way data is stored and accessed.
Row format stores data in a row-by-row manner, while columnar format stores data in a column-by-column manner.
Row format is suitable for OLTP workloads, while columnar format is suitable for OLAP workloads.
Columnar format allows for faster query performance and compression, while row format allows for faster inserts and updates.
Examples...
(2 Questions)
- Q1. System Design and Architecture - design a data pipeline to ingest data from streaming sources
- Ans.
Design a data pipeline to ingest data from streaming sources.
Identify the streaming sources and their data formats
Choose a streaming platform like Apache Kafka or AWS Kinesis
Design the pipeline architecture with data ingestion, processing, and storage components
Ensure scalability, fault-tolerance, and data consistency
Monitor and optimize the pipeline performance
- Q2. CV project discussion - includes data flow, data model, data pipeline. Coverage include - tech stack, programing language, limitations and drawbacks
(1 Question)
- Q1. Director round - fitment - professional and cultural
Interview Preparation Tips
2. remain hands-on on python and pyspark/scala.
3. know your project as Director round is also technical
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Raghavendra Kuruva
(2 Questions)
- Q1. Domain related questions
- Q2. Programming questions
(2 Questions)
- Q1. Question related to projects worked on
- Q2. Domain related questions
(2 Questions)
- Q1. Project design the system
- Ans.
Designing a system involves creating a plan for how all components will work together to achieve the desired outcome.
Identify the requirements and goals of the project
Create a high-level design outlining the system architecture
Break down the system into smaller components and design each one individually
Consider scalability, reliability, and performance in the design
Test the design to ensure it meets the requirements a
- Q2. Nature of work done related to
- Ans.
I have experience leading teams in designing and implementing complex software systems.
Led a team in developing a new customer relationship management system for a large corporation
Designed and implemented a real-time data processing system for a financial institution
Managed a project to upgrade an existing e-commerce platform with new features and improved performance
Skills evaluated in this interview
(2 Questions)
- Q1. Questions related to coroutines
- Q2. Questions related to Android Architecture Components
Interview Preparation Tips
(1 Question)
- Q1. Socket programming
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
Array problems and question on your existsing system
Selected
I applied via Recruitment Consulltant and was interviewed in Apr 2024. There were 3 interview rounds.
Based on stack implementation and struct ds . 2 Question in golang.
Was to implement simple api function using map with lock. but asked to use other ds like slice and do search.
(1 Question)
- Q1. Why relocating, changing role, etc.
Interview Preparation Tips
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
Selected
I was interviewed before Sep 2023.
(2 Questions)
- Q1. About yourself and professional Carrer
- Q2. Salary details, previous employers
(2 Questions)
- Q1. About supplier handling and solving mechanical issue
- Q2. To improve the part quality
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,
Interview Preparation Tips
(1 Question)
- Q1. Yang data modelling
(1 Question)
- Q1. Design thread safety singleton class
- Ans.
Designing a thread-safe singleton class
Use double-checked locking to ensure thread safety
Make the constructor private to prevent direct instantiation
Provide a static method to access the singleton instance
Use synchronized keyword or locks to handle concurrent access
Consider lazy initialization or eager initialization based on requirements
Skills evaluated in this interview
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Airtel Africa Lead Engineer Reviews and Ratings
based on 6 reviews
Rating in categories
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Senior Software Engineer
93
salaries
|  ₹11 L/yr - ₹36 L/yr |
|
Software Engineer
59
salaries
| ₹12 L/yr - ₹20.5 L/yr |
|
Senior Manager
35
salaries
| ₹18.2 L/yr - ₹36 L/yr |
|
Engineering Manager
19
salaries
| ₹36 L/yr - ₹53 L/yr |
|
Lead Engineer
18
salaries
| ₹27 L/yr - ₹36 L/yr |
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