cogent interview experience Real time questions & tips from candidates to crack your interview

Full Stack Engineer

cogent

2 rounds | 2 Coding problems

Twisam

Fresher | May 2022

Selected

Interview preparation journey

Preparation

Duration: 12 Months

Topics: JavaScript, NODEjs, ExpressJs, React, React Hooks, MongoDB.

Tip

Tip 1 : Basics of JavaScript should be very strong.
Tip 2 : NODEjs and ExpressJs API creation and Routing.
Tip 3 : Knowledge of intermidiete React and React Hooks

Application process

Where: Linkedin

Eligibility: Graduate

Resume tip

Tip 1 : Make it single page
Tip 2 : Mention every certificate, tech stack, internships and jobs

Interview rounds

Round

Easy

HR Round

Duration30 Minutes

Interview date7 May 2022

Coding problem1

Asked about the reason of switching jobs. Normal basic poersonal details.

1. Basic HR Questions

1. Personal Details

2. Reason behind switching job

Round

Easy

Online Coding Test

Duration60 Minutes

Interview date7 May 2022

Coding problem1

Asked to create a simple login route using NodeJs ExpressJs and MongoDb

1. Web Development Question

How would approach a normal login API in the backend.

Problem approach

router.post('/login', (req, res) => {
const { email, password } = req.body;
User.findOne({ email })
.then((user) => {
if (!user) {
return res
.status(400)
.json({ error: 'User does not exist' });
}
if (
user &&
bcrypt.compareSync(
password,
user.password
)
) {
const token = jwt.sign(
{ userId: user._id, email: user.email },
'secretkey',
{ expiresIn: '1h' }
);
user.token = token;
return res.json({ user });
}
return res
.status(400)
.json({ error: 'Wrong password' });
})
.catch((err) =>
res.status(400).json({ error: err })
);
});