ByteDance technical Interviewer: what kind of candidate do I want to pick most

ByteDance R & D interviewers , How to evaluate candidates ？

 

In this golden season , Whether you have just received the interview notice , Or has the interview ended , Or just submitted a resume , This question is the biggest curiosity around my heart .

 

What to prepare before the interview ？ What questions will the interviewer ask ？ What kind of interview performance can you pass ？

 

To solve your doubts , We invited 3 Each person should take on one side 、 Two sides 、 Three side interviewer ByteDance R & D classmates , Ask them 「 According to 」 A little evaluation criteria for technical interview .

 

 

I met offer harvester ,

Finish the problem and optimize the code again

 

interviewer ： Mitsui

Direction field ： Flybook backend development

Interview rounds ： one side

 

Candidates for the back-end position of the flying book , Whether interns or social recruitment , May meet me .

 

Most of the time, I am an interviewer , Occasionally I will be a second interview .

 

Of course , The interview content of one side and two sides is not much different , We pay attention to interview 「 The three complement each other 」, In other words, the inspection points of the three rounds of interviews are complementary , On the one hand, I asked some questions , The second interviewer will examine the technical level of the candidate from other aspects .

 

Being an interviewer is quite stressful , Sometimes there are many people , There will be dozens of resumes to read one day , But not everyone is suitable for this position , For example, the field of expertise does not match the job requirements , Or there are too many hard injuries in the past interview evaluation .

 

After the resume passes , During the interview, I will look at the candidate's experience , Ask questions according to the fields he knows and the projects he has done .

 

I will focus on Candidates' thinking about the project , What specific experience have you gained from the project 、 What has been learned , For example, I did a project , What's wrong 、 How to improve 、 How to realize new requirements, etc . Because if he really does a project in depth , There must be a lot of problems , Many specific points in it can be deeply dug .

 

For example, there was a candidate before , Say you have made a seckill system , I asked him ： Systematic QPS How much can be achieved ？ What functions have been realized ？ How is the process ？ He couldn't answer these details .

 

Actually , A person with the spirit of exploration will study these problems , This is also the accumulation of work experience . With the increase of one's working years , He should not only make achievements , At the same time, there are also some thoughts and precipitation , This is a deeper ability improvement .

 

If the candidate's project experience is not relevant to this position , Or I'm not familiar with the field , Then I will ask some Basic computer knowledge 、 Principle and application of basic components 、 General technical solutions or algorithm problems And so on. .

 

In fact, when it comes to basic knowledge and algorithm problems , There are many summarized contents on the Internet , But I hope not to memorize , Because I always find an angle to ask questions , See if the candidate really understands this knowledge , Or simply recite the answer .

 

In addition, most of the time I will give candidates questions . Doing questions mainly depends on ideas , Many times, he may not think of the optimal solution at the beginning , But there is also a feasible solution that is also possible , I can see that the candidate is trying to solve the problem , I will give some hints according to the situation , If he really has no idea , I may change the question ; If there is no time to change the question , But if the basic knowledge and the project are good, I will also pass , Then ask two interviewers to evaluate again .

 

But when it comes to questions , There is an overseas candidate , I was impressed , He not only has clear thinking , The code format is also very good .

 

at that time , I gave him an algorithm problem , He thought for a moment , When we have ideas , Soon the framework was written .

 

To my surprise , He didn't give me the answer directly , But I optimized it again , The final presentation is perfect .

 

Other basic knowledge problems 、 Project questions , He also answered clearly . You can see that although his level is very high , But not the kind of overconfidence 、 Arrogant people , Communication attitude is neither humble nor overbearing .

 

This kind of general is offer It's the harvester , And you will find that his whole state and job-hunting mentality are very healthy and sunny , It's not like many people are crazy to roast about their current work , Under this mentality, he may have a negative mentality when he works elsewhere .

 

All in all , When I interview, I hope the candidate is skilled , Second, I hope he can communicate frankly 、 Smooth collaboration , This is the talent I most hope to meet .

 

It is necessary to explore technology ,

Communication and cooperation also add points

 

interviewer ： Xiaolu

Direction field ： Commercial front end

Interview rounds ： Two sides

 

Since becoming an interviewer , I have interviewed 170 Many candidates .

 

The interviewer on the previous side has investigated the candidate's technical foundation , So the foundation of the candidates I see is generally not too bad , My main investigation is Candidates' ability to think deeply and understand the business .

 

Students who have just graduated for a year or two , In fact, it's similar to school recruitment , My requirements for his business are relatively low , But the foundation must be stable —— in other words , In addition to the basic knowledge asked by the interviewer , It is necessary to explore and study technology .

 

For example, ask about the project , I will dig deeply into oneortwo directions involved in the candidate project , Some people really study these , But some candidate projects can only run , A little digging can only answer “ I do not know! , No understanding ”, This is actually a test of a R & D exploration spirit .

 

For candidates who have gone beyond the rookie stage , For example, I worked for four 、 Five years of people , We should have enough experience to solve some specific problems .

 

For example, in a specific scenario , Web pages load very slowly , How to design a technical solution to solve this problem ？ Do it in several steps ？ What to do with each step ？ I need to see the candidate's technical planning ability .

 

So on the whole, the recruitment requirements of ByteDance are still very high , Although there are some candidates who are not very suitable , If you open one eye and close the other, let it in , He can finish the work , But the company still hopes to recruit very excellent or high potential people , So the overall team strength is very good .

 

In addition to the consideration of technical foundation and technical planning , In fact, I will value more soft qualities ：

 

The first is the candidate's Communication and cooperation ability .

 

Take the recent school recruitment , When I was in school, I always wanted to be a full stack engineer , Understand all areas , One person completes a very powerful system ; But after working, I found , Most people can't get away from the team , It looks very empty 「 Soft quality 」 Become very important .

 

After all , Except for some people who specialize in direction research , Most people work around the development and iteration of the company's business , To achieve a business goal , How to mobilize resources , Let different teams cooperate with you , What is needed is communication 、 Coordinate 、 Project promotion capability .

 

The more important things a person is responsible for , We need to promote more people and teams to cooperate , But everyone has his own consideration ： Zhang San's other work has a higher priority 、 Li Si doesn't agree with this direction 、 Wang Wu conceived another plan by himself …… How to seek common ground while reserving differences , Take care of everyone's concerns , Propose a plan that everyone agrees , It's a very important ability .

 

So during the interview, I will focus on the ability of expression, communication and teamwork , People who are good at this can clearly state the key points , Generally, they are also involved in or even responsible for projects with too many people ; But some candidates , Or talk like squeezing toothpaste , Ask and answer , Or there is no point for half a day , It's even harder to promote teamwork .

 

The second is The potential of the candidate .

 

Potential is sometimes difficult to judge , But you can always feel the candidates' attention to technology and business . For example, our commercial team , Some candidates will be interested in these advertisements when they brush Tiktok , He doesn't think advertisements are simply disturbing , Instead, I will study the form of Tiktok advertising , Study how these advertisements bring value to products and users .

 

These thoughts on products and businesses affect a person's growth potential , It determines whether he can go deeper into business in the future 、 Can you have a certain understanding of the market .

 

Finally, consider the character of the candidate , Some people are really excellent , But the whole interview showed an inexplicable sense of superiority , Too rebellious , It may also be difficult to work with teams .

 

As long as you're good at it ,

Non computer majors also write code

 

interviewer ： Du Qian

Direction field ： Vigorously intelligent front end

Interview rounds ：Leader Candidates below grade three interviewers

 

I interviewed front-end classmates , The most important thing is his Hands on ability .

 

There are many front-end interdisciplinary students , For example, I met an intern before , Although not a computer science major , But his devotion will be higher than that of some students who came from computer science classes , The ability to practice is stronger .

 

He has made high comments on the first and second sides , It shows that the basic technical ability is very good , I won't ask specific technical questions when I interview him , Let him show it directly in GitHub Some open source gadgets , One of them is the front-end scaffold used to generate code , Another is based on Vue Dynamic template generation scheme , There are also some small games .

 

These projects prove , His overall practical ability is very strong , Because we need to make these scaffolds , Some packaging tools must be used 、 Know something about front-end code compression , Understand the underlying code principles .

 

For this kind of students , The front end is his interest , Therefore, he will study all aspects of the front end , Although students , It may not be studied very deeply , But the knowledge is very wide , This also proves that the upper limit of his future development will be very high , For students who are not computer majors , I will pay more attention to the upper limit of future development .

 

But for the students who have been recruited for three or five years , Interest and practical ability alone are not enough , Thinking and precipitation are still very important . For example, have you actively promoted some performance optimization in the company , Can tell which indicators he cares about in the optimization process 、 What measures have been taken 、 What is the final effect .

 

for instance , If I ask about the performance optimization of the front end , The candidate responded generously that code compression was needed 、 Picture optimization , That may be just a little involved ; But if you say it in detail , Tell me how to do code compression and image optimization , That shows that he has done a lot of thinking and precipitation in this regard .

 

This can also prove a person's development potential , If one works 8、9 Man of the year , The technical ability is OK, but the technical depth is not enough , Work without initiative , I haven't actively promoted the implementation of some projects , I even need to go push, It may be difficult to entrust important tasks .

 

Because the people I need most are a little extreme ：

 

or Excellent technical ability , There are many hands-on practices 、 Many open source contributions , Even if the overall quality is a little poor, I can accept ;

 

Or the professional ability is a little poor , but Strong comprehensive quality —— Good at communication , Have good ideas about products and business , Even have the experience of leading a small team , It can develop in the direction of management .

 

Because although they are all front-end development , But everyone has different advantages and division of labor , Some people are technical players , Just study technology 、 Just solve the problem ; And some people are obviously professional players , You can't rely solely on the product manager to feed your needs , Sometimes we have to feed back the product 、 Try to do business 、 Give some good ideas to the product , For many R & D , This part is missing .

 

But with the same technical ability , I will choose students who are more sensitive to business . When talking about business with candidates , If he is familiar with the general operation data of the current main products in the industry 、 Problems encountered 、 What to do next , That may be more suitable for our team , It can become a business in the future owner.

 

Finally said so much , Let's briefly summarize 「 The interview must pass 」：

 

Project experience should be kept in mind , Show depth and potential .
Knowledge understanding is flexible , You can't count on reciting all the questions .
Communicate frankly and focus , Promote cooperation and alignment .
Keep a stable attitude towards job hunting , Neither humble nor arrogant is the most polite .
Know both technology and business ,idea Feed back PM.
If there is no major and education , Hands on practice is the most advanced .

 

But while summarizing the interview experience , Don't forget that the more important thing is to constantly improve technical ability and comprehensive quality , In this way, we can get the ideal in one interview after another offer.

 

Refueling oh ～