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3M Data Engineer Interview Questions and Answers

Updated 5 Dec 2024

3M Data Engineer Interview Experiences

Interview questions from similar companies

I applied via Recruitment Consulltant and was interviewed in May 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(3 Questions)

  • Q1. Details of OoPs concept.
  • Q2. Write a program using OoPs concept
  • Ans. 

    Program using OOPs concept

    • Identify the objects and their properties

    • Create classes and define their methods

    • Use inheritance and polymorphism

    • Encapsulate data and use access modifiers

    • Example: A program to simulate a bank account

  • Answered by AI
  • Q3. How do code review in your project
  • Ans. 

    Code reviews are conducted regularly to ensure code quality and adherence to coding standards.

    • Code reviews are conducted by peers or senior developers.

    • Reviewers check for code quality, readability, maintainability, and adherence to coding standards.

    • Issues found during code review are documented and addressed by the developer.

    • Code reviews are conducted regularly, either before merging code or on a scheduled basis.

    • Tools ...

  • Answered by AI
Round 3 - Coding Test 

One programming challange just to see how good you use OOPs

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on coding practice using oops so that you can beat coding round.not focused on logic more but the way u use oops

Skills evaluated in this interview

I applied via Recruitment Consulltant and was interviewed in Nov 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(3 Questions)

  • Q1. Introduction about your work and Tech work
  • Ans. 

    I have been working as a Software Engineer for the past 5 years, specializing in developing web applications using Java and JavaScript.

    • Proficient in Java and JavaScript

    • Experience in developing web applications

    • Strong understanding of software development principles

    • Familiarity with agile methodologies

    • Knowledge of database management systems

    • Experience with version control systems like Git

    • Ability to work in a team and comm

  • Answered by AI
  • Q2. All Details of OOPs concepts
  • Q3. Write a code by using OOPs technology result doesn't matter approach will be considered
Round 3 - Coding Test 

Coding Round two questions with OOPs concepts

Interview Preparation Tips

Topics to prepare for Emerson Electric Co. Software Engineer interview:
  • OOPS
Interview preparation tips for other job seekers - Be confident
Be Genuine
Write code by separating UI with Logic using OOPs
Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed before Jan 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. Related to previous Job and core technical questions
  • Q2. Question depend upon department

Interview Preparation Tips

Interview preparation tips for other job seekers - Best of luck , try yr best .
Super
Good company

I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 4 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. What is your role in quality control department.
  • Q2. Describe one of your project that you did sololy/with extra efforts.
  • Q3. What is your team size. And at which layer lying.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident, explain things smoothly.

I applied via Recruitment Consulltant and was interviewed in May 2021. There were 5 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Salary discussion
  • Q2. Type of communication protocols , DCS PLC SCADA system
  • Ans. 

    DCS, PLC and SCADA systems use various communication protocols such as Modbus, Profibus, Ethernet/IP, etc.

    • DCS systems use protocols like Modbus, Profibus, HART, Foundation Fieldbus, etc.

    • PLC systems use protocols like Modbus, Ethernet/IP, Profinet, DeviceNet, etc.

    • SCADA systems use protocols like Modbus, DNP3, OPC, IEC 60870-5, etc.

    • Each protocol has its own advantages and disadvantages, and the choice of protocol depends...

  • Answered by AI
  • Q3. Basic electrical
  • Q4. Type of safety action
  • Ans. 

    Safety action refers to any action taken to prevent or mitigate potential hazards or risks.

    • Safety actions can include implementing safety protocols and procedures, providing safety equipment and training, conducting safety audits and inspections, and addressing safety concerns raised by employees or customers.

    • Examples of safety actions include installing guardrails on a construction site, providing personal protective ...

  • Answered by AI
  • Q5. Basic questions

I was interviewed before May 2021.

Round 1 - Technical 

(1 Question)

  • Q1. Opps and asp.net questions , dependency injection
Round 2 - Behavioral 

(1 Question)

  • Q1. Personality and character checking are you fit for position
  • Ans. 

    Yes

    • I have the necessary personality traits and character qualities for the Senior Engineer position.

    • I am highly motivated, detail-oriented, and have excellent problem-solving skills.

    • I am a team player and have strong communication and leadership abilities.

    • I am adaptable and can handle pressure and tight deadlines effectively.

    • I have a track record of successfully delivering complex projects and meeting objectives.

    • I cont...

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Salary discussion and etc

Interview Preparation Tips

Interview preparation tips for other job seekers - Takes many days in processing your candidature

I was interviewed before Mar 2021.

Round 1 - Face to Face 

(7 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round started with some questions from Programmable Logic Controllers or PLC followed by some basic questions from Intel 8051 Microcontroller.

  • Q1. What are the general functions of a Programmable Logic Controller (PLC)?
  • Ans. 

    PLCs are used to control machinery and automate processes in industrial settings.

    • Monitoring inputs from sensors

    • Executing control algorithms

    • Communicating with other devices

    • Logging data for analysis

    • Implementing safety functions

    • Examples: controlling a conveyor belt, regulating temperature in a furnace

  • Answered by AI
  • Q2. Can you describe the basic elements in Ladder logic programming?
  • Ans. 

    Ladder logic programming is a graphical programming language used for PLCs, with basic elements like contacts, coils, timers, and counters.

    • Ladder logic consists of rungs, which are made up of inputs (contacts) and outputs (coils).

    • Contacts represent conditions that must be met for the output to be energized.

    • Coils are outputs that are energized when the conditions of the contacts are met.

    • Timers and counters are used to c...

  • Answered by AI
  • Q3. What are the different types of PLC inputs and outputs?
  • Ans. 

    PLC inputs and outputs include digital inputs, digital outputs, analog inputs, and analog outputs.

    • Digital inputs: used for receiving binary signals (on/off, high/low). Examples: push buttons, limit switches.

    • Digital outputs: used for sending binary signals. Examples: relays, solenoids.

    • Analog inputs: used for receiving continuous signals. Examples: temperature sensors, pressure transducers.

    • Analog outputs: used for sendin...

  • Answered by AI
  • Q4. What are the advantages and disadvantages of the S7 controller?
  • Ans. 

    The S7 controller offers high performance and flexibility but can be complex to program and expensive.

    • Advantages: high performance, flexibility, scalability

    • Disadvantages: complexity in programming, expensive

    • Example: S7-1200 offers fast processing speeds and can be easily expanded with additional modules

    • Example: Programming for S7 controllers may require specialized training and expertise

  • Answered by AI
  • Q5. Can you explain the time stamp available in the S7-200 PLC?
  • Ans. 

    The time stamp in S7-200 PLC is used to record the time when a specific event occurs.

    • Time stamp is a feature in S7-200 PLC that records the time when a specific event happens.

    • It helps in tracking the sequence of events and troubleshooting issues.

    • Time stamp can be used to monitor the performance of the PLC system.

    • Example: A time stamp can be recorded when a sensor detects a change in temperature.

    • Example: Time stamp can ...

  • Answered by AI
  • Q6. Could you explain Jnc in the context of microcontrollers?
  • Ans. 

    Jnc stands for Jump and Call in the context of microcontrollers.

    • Jnc is an instruction used in microcontrollers to jump to a specified address if the carry flag is not set.

    • It is commonly used in conditional branching operations in microcontroller programming.

    • For example, in 8051 microcontroller assembly language, the instruction JNC label will jump to the specified label if the carry flag is not set.

  • Answered by AI
  • Q7. What are the types of interrupts in the Intel 8051 microcontroller?
  • Ans. 

    The types of interrupts in the Intel 8051 microcontroller include external hardware interrupts, timer interrupts, and serial communication interrupts.

    • External hardware interrupts are triggered by external devices connected to the microcontroller.

    • Timer interrupts are generated by the internal timers of the microcontroller.

    • Serial communication interrupts occur when data is received or transmitted through the serial port.

    • ...

  • Answered by AI
Round 2 - Face to Face 

(6 Questions)

Round duration - 50 Minutes
Round difficulty - Medium

This round was heavily inclined towards Operating System and Computer Networks and the interviewer asked questions revolving around the fundamentals of the subject.

  • Q1. What is a bootstrap program in an operating system?
  • Ans. 

    A bootstrap program is a small program that initializes the operating system on a computer.

    • Bootstrap program is stored in ROM or EEPROM and is executed when the computer is powered on.

    • It loads the operating system kernel into memory and starts its execution.

    • Bootstrap program is responsible for setting up the initial state of the operating system.

    • Examples include BIOS (Basic Input/Output System) in PCs and UEFI (Unified

  • Answered by AI
  • Q2. Can you explain demand paging?
  • Ans. 

    Demand paging is a memory management scheme where pages are only brought into memory when they are demanded by the program.

    • Pages are loaded into memory only when needed

    • Helps in reducing the amount of physical memory required

    • Improves overall system performance by allowing more processes to run simultaneously

    • Commonly used in virtual memory systems

  • Answered by AI
  • Q3. Can you explain any 5 essential UNIX commands?
  • Ans. 

    Five essential UNIX commands are ls, cd, pwd, mkdir, and rm.

    • ls - list directory contents

    • cd - change directory

    • pwd - print working directory

    • mkdir - make directory

    • rm - remove files or directories

  • Answered by AI
  • Q4. What are the different types of VPN?
  • Ans. 

    Different types of VPN include remote access VPN, site-to-site VPN, and client-to-site VPN.

    • Remote access VPN allows individual users to connect to a private network from a remote location.

    • Site-to-site VPN connects entire networks together over the internet.

    • Client-to-site VPN allows individual devices to connect to a private network.

    • Examples include OpenVPN, IPsec, and SSL VPN.

  • Answered by AI
  • Q5. Can you describe the OSI Reference Model?
  • Ans. 

    The OSI Reference Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

    • The OSI Reference Model stands for Open Systems Interconnection Reference Model.

    • It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

    • Each layer has specific functions and communicates with the adjacent layers for data trans...

  • Answered by AI
  • Q6. Can you explain the TCP and UDP protocols?
  • Ans. 

    TCP is a connection-oriented protocol that ensures reliable data delivery, while UDP is a connectionless protocol that focuses on speed.

    • TCP stands for Transmission Control Protocol and is used for reliable data transmission.

    • TCP establishes a connection between sender and receiver before data transfer.

    • TCP uses sequencing and acknowledgment to ensure data integrity.

    • UDP stands for User Datagram Protocol and is used for fa...

  • Answered by AI
Round 3 - HR 

(1 Question)

Round duration - 30 Minutes
Round difficulty - Easy

This is a cultural fitment testing round .HR was very frank and asked standard questions. Then we discussed about my
role.

  • Q1. What is something about you that is not included in your resume?

Interview Preparation Tips

Eligibility criteriaAbove 1 years of experienceSiemens interview preparation:Topics to prepare for the interview - Operating Systems, Computer Architecture, Microcontollers and Microprocessors, Computer Networks, AptitudeTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Apr 2017.

Interview Questionnaire 

15 Questions

  • Q1. What are you currently doing in your job profile?
  • Ans. 

    I am currently responsible for designing, implementing, and maintaining system infrastructure for our organization.

    • Designing system architecture to meet business requirements

    • Implementing new technologies and solutions to improve system performance

    • Maintaining system infrastructure to ensure high availability and security

    • Troubleshooting and resolving system issues as they arise

  • Answered by AI
  • Q2. What is system configuration?
  • Ans. 

    System configuration refers to the process of setting up and arranging hardware and software components to work together efficiently.

    • System configuration involves setting up hardware and software components to work together efficiently

    • It includes configuring network settings, installing drivers, and setting up user accounts

    • Examples of system configuration tools include Microsoft System Center Configuration Manager and ...

  • Answered by AI
  • Q3. What is the disadvantage or drawback in S7 controller?
  • Ans. 

    The S7 controller has limited scalability and flexibility compared to other controllers.

    • Limited number of I/O points

    • Limited memory capacity

    • Limited processing power

    • Limited communication options

    • Limited support for advanced programming languages

    • Limited compatibility with third-party devices

    • Limited ability to handle complex control algorithms

    • Limited fault diagnostics capabilities

  • Answered by AI
  • Q4. Same question but in depth.
  • Q5. Like draw system configuration
  • Q6. Explain topologies used/protocol etc
  • Ans. 

    Topologies and protocols used in networking

    • Topologies: Bus, Star, Ring, Mesh, Hybrid

    • Protocols: TCP/IP, HTTP, FTP, SMTP, DNS

    • Ethernet, Wi-Fi, Bluetooth are common networking technologies

    • Network security protocols: SSL, TLS, IPSec

    • Routing protocols: OSPF, BGP, RIP

  • Answered by AI
  • Q7. Tell me about your self?
  • Ans. 

    I am a dedicated and experienced System Engineer with a strong background in network infrastructure and troubleshooting.

    • Over 5 years of experience in designing, implementing, and maintaining complex systems

    • Proficient in network protocols such as TCP/IP, DNS, DHCP

    • Skilled in troubleshooting hardware and software issues

    • Certified in Cisco CCNA and CompTIA Network+

    • Strong communication and problem-solving skills

  • Answered by AI
  • Q8. Family condition and persons?
  • Ans. 

    I come from a close-knit family of four, including my parents and younger sister.

    • Family of four: parents and younger sister

    • Close-knit family

    • Supportive family members

    • Regular family gatherings and activities

  • Answered by AI
  • Q9. Why you want to join us?
  • Ans. 

    I am passionate about utilizing my technical skills to contribute to innovative projects and collaborate with a talented team.

    • Passionate about technology and innovation

    • Excited to work with a talented team

    • Looking for opportunities to utilize technical skills

  • Answered by AI
  • Q10. Are you sure this profile matches to your career goal.
  • Ans. 

    Yes, this profile aligns with my career goal as a System Engineer.

    • My career goal is to work in the field of system engineering

    • I have relevant education and experience in system engineering

    • I am passionate about technology and problem-solving, which are key aspects of system engineering

  • Answered by AI
  • Q11. Why you want to switch?
  • Ans. 

    I want to switch to explore new challenges and opportunities for growth in my career.

    • Seeking new challenges to enhance my skills and knowledge

    • Opportunity for career growth and advancement

    • Interested in working with new technologies or industries

  • Answered by AI
  • Q12. What is that thing which attract you for this job?
  • Ans. 

    The opportunity to work on complex systems and solve challenging problems in a dynamic environment.

    • Opportunity to work on complex systems

    • Solving challenging problems

    • Dynamic work environment

  • Answered by AI
  • Q13. What is the reason you left your current job profile?,because my profile was Automation engineer.
  • Q14. Your family baackground?
  • Ans. 

    My family background is diverse and includes a mix of professions and interests.

    • My parents are both engineers, which inspired me to pursue a career in the same field.

    • I have siblings who are in the medical field, providing a different perspective on healthcare.

    • We have a strong emphasis on education and continuous learning in our family.

    • Family gatherings often involve discussions about technology, science, and current ev...

  • Answered by AI
  • Q15. What is that quality in you which suits this job?
  • Ans. 

    My problem-solving skills and attention to detail make me a perfect fit for this role.

    • Strong problem-solving skills

    • Attention to detail

    • Ability to work well under pressure

    • Experience with troubleshooting complex systems

    • Strong communication skills

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: First of all i applied through india's most famous job portal naukri.com.
This opening comes through a consultant [ pacific IT solutions ],first my resume was shortlisted by this consultant,after that they contact me on my mobile number verified with naukri.com,for avalibility and interest for change and tell me that they forward ,y resume to siemens HR and if they will shortlist you then you will get a mail for F2F round from them.
Tips: Special tips for this round are:-
Always update your profile daily and try to follow up more n more consultant/recruiter.

Round: Technical Interview
Experience: I reached interview location on time,then i submit my resume in reception ,after 30 min my interview starts with all these question given above,then they told me to wait outside.
Tips: 1)Be confident and in formal look.
2)What ever is written in your resume you must be familier with this.
3)Dont put all the certification/courses/skill in your resume.try to put only those things which you know vwry well.
4)Make your resume as per job demand.Heighlight your those skills which matches to job.
5)Dont be over smart if you know the answer of given question.

Round: Technical Interview
Experience: After Clearing my first round ,interviewer call me for second round on the same day,after fiew hour,the interviewer is very frank,they ask same questions and they were little bit checking my interest also towards job.
Tips: In this round the interviewer in more experienced so for him it is very easy to catch you knolwdge level.So be confident,try to answer with little bit diplomatic,and try to explain with practical experiances as musch as possible.

Round: Behavioural Interview
Experience: This Round name is Managerial round.In this round they checked my interest towards job.my family condition and dependent person.
Tips: Be confident
Listen question carefully because this round is completely diplomatic.
Try to answer smartly and diplomatic.
And try to win the trust of interviewer.

Round: HR Interview
Experience: After clearing managerial round.hr called me for this,HR is very frank and make a very comfort atmosphere at the time of interview.little bit discussing about jonb profile and then discuss salary,and finall shaking hand said.if you will get selected then we will inform you before xyz day.
I after 4 days i get a call from hr about my selection with a offer letter.
Tips: Be frank
But Not over confident

Skills evaluated in this interview

Interview Questionnaire 

2 Questions

  • Q1. Standard HR questions
  • Q2. Questions based on my POR's and extra curricular activities

Interview Preparation Tips

Round: Resume Shortlist
Experience: Good projects and internships helped me to get through this round

Round: Test
Duration: 60 minutes

Round: Technical Interview
Experience: Questions related to signal processing (included image signal processing as well), control and communications. Also there were few technical questions based on the internships and the projects done. This interview lasted for about 30 mins.

Round: HR Interview
Experience: 45 mins of HR round. All the standard HR questions were asked and questions were based on each and every point that you have put up in the resume

College Name: IIT MADRAS

3M Interview FAQs

How many rounds are there in 3M Data Engineer interview?
3M interview process usually has 1 rounds. The most common rounds in the 3M interview process are Coding Test.
How to prepare for 3M Data Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at 3M. The most common topics and skills that interviewers at 3M expect are Compliance, Data Analysis and Supervision.

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3M Data Engineer Interview Process

based on 1 interview

Interview experience

4
  
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3M Data Engineer Salary
based on 18 salaries
₹12 L/yr - ₹22 L/yr
67% more than the average Data Engineer Salary in India
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3M Data Engineer Reviews and Ratings

based on 1 review

2.0/5

Rating in categories

2.0

Skill development

1.0

Work-life balance

1.0

Salary

1.0

Job security

1.0

Company culture

1.0

Promotions

1.0

Work satisfaction

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