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FiftyFive Technologies Full Stack Developer Interview Questions, Process, and Tips

Updated 31 Oct 2024

Top FiftyFive Technologies Full Stack Developer Interview Questions and Answers

View all 8 questions

FiftyFive Technologies Full Stack Developer Interview Experiences

2 interviews found

Interview experience
1
Bad
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is Hoisting
  • Ans. 

    Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope.

    • Variable declarations are hoisted to the top of the function or global scope.

    • Function declarations are also hoisted to the top of the function or global scope.

    • However, only the declarations are hoisted, not the initializations.

  • Answered by AI
  • Q2. What are hooks in reactjs
  • Ans. 

    Hooks in ReactJS are functions that let you use state and other React features without writing a class.

    • Hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

    • Some commonly used hooks are useState, useEffect, useContext, and useReducer.

    • Hooks allow you to reuse stateful logic across multiple components without changing the component hierarchy.

    • Example: useState hook allows y...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Time wasters, they sent an inexperienced developer for interview.
Interviewer showed up in gym sando, on top of that he asked interview from a website that listed interview questions and tries to match my answers Verbatim.
Got rejected by a jr dev who was not even working in my tech.

Skills evaluated in this interview

Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.

Round 1 - Technical 

(6 Questions)

  • Q1. Closures in javascript
  • Ans. 

    Closures in JavaScript allow functions to access variables from an outer function even after the outer function has finished executing.

    • Closures are created whenever a function is defined within another function.

    • Inner functions have access to the outer function's variables even after the outer function has returned.

    • Closures can be used to create private variables and functions in JavaScript.

    • Example: function outerFuncti...

  • Answered by AI
  • Q2. Higher order functions in javascript
  • Ans. 

    Higher order functions in JavaScript are functions that can take other functions as arguments or return functions as output.

    • Higher order functions can be used to create more flexible and reusable code.

    • Examples include functions like map, filter, and reduce in JavaScript.

    • Higher order functions can help with tasks like data manipulation, event handling, and asynchronous programming.

  • Answered by AI
  • Q3. Map and reduce functions in javascript
  • Ans. 

    Map and reduce functions are higher-order functions in JavaScript used to transform and aggregate data in arrays.

    • Map function applies a function to each element in an array and returns a new array with the results.

    • Reduce function applies a function to each element in an array, accumulating a single value.

    • Example: const numbers = [1, 2, 3]; const doubled = numbers.map(num => num * 2); const sum = numbers.reduce((acc, cu

  • Answered by AI
  • Q4. Record enum in typescript
  • Ans. 

    Enums in TypeScript allow developers to define a set of named constants.

    • Define an enum using the 'enum' keyword followed by the enum name and list of constants

    • Access enum values using the enum name followed by a dot and the constant name

    • Enums can have string or numeric values, and can also be used as types

  • Answered by AI
  • Q5. Event loop in js
  • Ans. 

    Event loop in JavaScript manages asynchronous operations by executing callback functions in a queue.

    • Event loop is responsible for handling asynchronous operations in JavaScript.

    • It allows non-blocking I/O operations by executing callback functions in a queue.

    • Event loop continuously checks the call stack and the callback queue to determine which function to execute next.

  • Answered by AI
  • Q6. Sort an array using javascript
  • Ans. 

    Use the sort() method in JavaScript to sort an array of strings.

    • Use the sort() method with a compare function to sort the array alphabetically.

    • Example: array.sort((a, b) => a.localeCompare(b));

  • Answered by AI

Skills evaluated in this interview

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Interview Preparation Tips

Round: Test
Experience: Apti was quite easy . In Basic CS concepts software engineering is prominent.
Tips: Brush up Software Engineering before written test
Duration: 90 minutes
Total Questions: 50

College Name: NIT BHOPAL

I was interviewed before Aug 2016.

Interview Preparation Tips

Round: General and technical aptitude
Experience: There were questions on basics of programming and general questions on verbal,reasoning and quantitative.
Tips: Time will be short to answer all so keep watch on time

Round: Group Discussion
Experience: They segregated us in to batches and in our team there were 10 members.
Tips: Easy round
Duration: 15 minutes

Round: Telephonic
Experience: They tested my communication skill in that round

College Name: Dhanalakshmi college of engineering

I was interviewed in Apr 2017.

Interview Questionnaire 

2 Questions

  • Q1. Java questions...
  • Q2. Tell me about urself and about us family and all
  • Ans. 

    I am a software developer with a passion for coding and problem-solving. My family is supportive and has always encouraged my career in tech.

    • Experienced software developer

    • Passionate about coding and problem-solving

    • Supportive family that encourages my career in tech

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Easy questions are there
Duration: 1 hour
Total Questions: 90

Round: Group Discussion
Experience: 12 members are there only 9 got selected
Tips: Be confident in urself and specially work in Communication skills
Duration: 15 minutes

Round: Technical Interview
Experience: Asking all the concepts of Java like oops collections threads
Tips: Prepare well on Java

Round: HR Interview
Experience: Everything was Gud but due to my certificate problem I got rejected.. Otherwise everything is good.
Tips: Be confident

College Name: C. V. Raman College of Engineering

I was interviewed before Mar 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This was an easy round which went really smooth.

  • Q1. 

    Nth Fibonacci Number Problem Statement

    Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2), with initial conditions F(1) = F(2) = 1.

    Input:

    ...
  • Ans. 

    Calculate the Nth Fibonacci number efficiently using dynamic programming.

    • Use dynamic programming to store previously calculated Fibonacci numbers to avoid redundant calculations.

    • Start with base cases F(1) and F(2) as 1, then iteratively calculate F(n) using F(n-1) and F(n-2).

    • Ensure the input N is within the constraints 1 <= N <= 10000.

    • Example: For N = 5, the 5th Fibonacci number is 5 (1, 1, 2, 3, 5).

  • Answered by AI
  • Q2. 

    Prime Numbers Problem Statement

    Given a positive integer N, your task is to determine and return all prime numbers less than or equal to N.

    Input:

    N = 10

    Output:

    2 3 5 7

    Example:

    Input:
    N = 20
    Out...
  • Ans. 

    Implement a function to return all prime numbers less than or equal to a given positive integer N.

    • Create a function that takes a positive integer N as input

    • Iterate from 2 to N and check if each number is prime

    • Use a helper function to determine if a number is prime

    • Return an array of all prime numbers less than or equal to N

  • Answered by AI
  • Q3. What is a merge join in SQL?
  • Ans. 

    A merge join in SQL is a method of combining two sorted datasets by matching corresponding rows based on a specified condition.

    • Merge join is used when joining two large datasets that are already sorted.

    • It is more efficient than other join methods like nested loop join or hash join for sorted datasets.

    • The join condition must be an equality condition.

    • Example: SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.i

  • Answered by AI
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

The round went excellent. I really enjoyed it. Just be confident about whatever you answer

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALarsen & Toubro Infotech (LTI) interview preparation:Topics to prepare for the interview - Database, Basic C/C++, Data Structures, Algorithms, System Design, Aptitude, OOPSTime 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.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

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 before Mar 2021.

Round 1 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This round went well. Interview depends on your basic knowledge of C/C++.

  • Q1. 

    Matrix Multiplication Task

    Given two sparse matrices MAT1 and MAT2 of integers with dimensions 'N' x 'M' and 'M' x 'P' respectively, the goal is to determine the resulting matrix produced by their multipl...

  • Ans. 

    Implement a function to multiply two sparse matrices and return the resulting matrix.

    • Create a function that takes two sparse matrices as input and returns the resulting matrix after multiplication

    • Iterate through the non-zero elements of the matrices to perform the multiplication efficiently

    • Handle the edge cases such as empty matrices or matrices with all zero elements

    • Ensure the dimensions of the matrices are compatible

  • Answered by AI
  • Q2. 

    Problem: Count Even or Odd in Array

    Tanmay and Rohit are best buddies. Tanmay gives Rohit a challenge involving an array of N natural numbers. The task is to perform and answer a series of queries on the ...

  • Ans. 

    Count the number of even or odd numbers in a range of an array based on given queries.

    • Create an array to store the input numbers.

    • Iterate through the queries and update or count even/odd numbers based on the query type.

    • Output the count of even or odd numbers for each query of type 1 or 2.

  • Answered by AI
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

Typical HR round with behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALarsen & Toubro Infotech (LTI) interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime 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.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

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 Jul 2017.

Interview Questionnaire 

1 Question

  • Q1. Android basics and programs

Interview Preparation Tips

Round: Resume Shortlist
Experience: Resume shortlisted on the basis of 60% through out and experience in development more than 6 months.

Round: Technical Interview
Experience: Core java.. String, oops, exception,

Round: HR Interview
Experience: As usual.. tell me about your self.expectations and salary discussion.
Tips: Be confident whatever you say.

I was interviewed in Apr 2017.

Interview Questionnaire 

2 Questions

  • Q1. What is firmware and where it is used?
  • Ans. 

    Firmware is a type of software that is embedded in hardware devices to control their functionality.

    • Firmware is a combination of hardware and software.

    • It is used to control the behavior of hardware devices.

    • Firmware is typically stored in non-volatile memory, such as ROM or flash memory.

    • Examples of devices that use firmware include routers, printers, and digital cameras.

  • Answered by AI
  • Q2. Tell me about yourself only.
  • Ans. 

    I am a passionate software developer with experience in building web applications and solving complex problems.

    • Experienced in programming languages such as Java, JavaScript, and Python

    • Familiar with front-end technologies like HTML, CSS, and React

    • Strong problem-solving skills and ability to work in a team environment

    • Previous projects include developing a customer management system for a small business

  • Answered by AI

Interview Preparation Tips

Round: aptitude
Experience: the test had around 70 questions to be answered in 1 hour
Tips: keep watch on time and be quick enough because each sections has sectional cutoff.

Round: Technical Interview
Experience: the test had around 70 questions to be answered in 1 hour
Tips: keep watch on time and be quick enough because each sections has sectional cutoff.

Round: HR Interview
Experience: they tested my core knowledge and learning skill.
Tips: be strong in your basics.

Skills: Ability To Think Beyond Boundaries
College Name: mnm jec

Skills evaluated in this interview

I applied via Campus Placement

Interview Preparation Tips

Round: Test
Total Questions: 100

Round: Group Discussion
Duration: 15 minutes

Skill Tips: Infosys Internship program is structured very similar to Infosys Foundation Program. In both programs, the course is divided into two parts -
Generic Training and Stream Training. Generic Training will be based on Computer Science' fundamental subjects like OOPs using Java, RDBMS using Oracle, Software Engineering, Internetworking and Operating Systems. Stream specific training will be based on a certain technology like J2EE, DOT NET, Mainframe, SAP etc.

If you're unable to pass the internship program, you can join Infosys as a Systems Engineer trainee after you complete your engineering course and can undergo Infosys Foundation Program. Accommodation is free while going through internship program. You need to pay for food and for other amenities like Gym and Sports facilities.
The monthly stipend during internship program is INR 8000. Advantages for opting internship program is Infosys internship program would help you to undergo the initial training course while joining Infosys. So, if you successfully complete the internship program, you need not to attend the Foundation training in Infosys. So, when you rejoin infosys after completing your b.tech course, you would join as an employee, not as a trainee. It will help you get into production much advanced to other people who go through Foundation Program. After you complete your engineering course Infosys will communicate you with a date to rejoin the organization.
After you complete your internship and get posting location. When you rejoin Infosys, you have to report to that office only. Need not to come to Mysore or Mangalore again for reporting.
Once you join for internship program, you have to sign a bond and if you do not opt to rejoin Infosys then you need to consider the consequences as per the rules written in the bond like paying some amount.
One advantage of successfully clearing internship program is that you need not to go through Foundation program in Infosys. Both have equal weightage in Infosys. Scope of learning is same in both type of training.
Skills: Algorithms And Data Structures
Duration: 3
College Name: Government College of Engineering and Technology, Bikaner

FiftyFive Technologies Interview FAQs

How many rounds are there in FiftyFive Technologies Full Stack Developer interview?
FiftyFive Technologies interview process usually has 1 rounds. The most common rounds in the FiftyFive Technologies interview process are Technical.
How to prepare for FiftyFive Technologies Full Stack Developer 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 FiftyFive Technologies. The most common topics and skills that interviewers at FiftyFive Technologies expect are Full Stack, Javascript, AWS, Cloud and Mern Stack.
What are the top questions asked in FiftyFive Technologies Full Stack Developer interview?

Some of the top questions asked at the FiftyFive Technologies Full Stack Developer interview -

  1. map and reduce functions in javascr...read more
  2. higher order functions in javascr...read more
  3. What are hooks in reac...read more

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FiftyFive Technologies Full Stack Developer Interview Process

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