Developers
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Guide
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Hiring

How to prepare for a programming interview

By Angelos Katrantzis

devs hiring
Content
5
min
5
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How to navigate the software job search?

Embarking on a job search in the programming world can be likened to a three-part journey:

1. The boring part:
  • This involves scouring job boards, diligently sending out numerous CVs, and the anticipation of a response from a prospective employer. It's a repetitive process that requires patience and persistence.
2. The stressful part:
  • The thrill of receiving a response! This stage encompasses an introductory discussion and, often, the nerve-wracking technical interview.
3. The happy part:
  • Receiving the good news, you’re hired! All that time and effort and patience has been rewarded and you’ve secured the job. Congratulations!

Well, there is of course another outcome, one that you want to avoid entirely. A fork in the road that occurs in part 3 of the process. I am of course referring to ‘The sad part’. The “unfortunately, we have decided to move on with the hiring process, and your application was not selected at this time” part. We’d all like to skip this part entirely, wouldn’t we? Well, this article is intended to help you bypass any sad parts in the process. 

That's where Torc comes in handy. With Torc, job applications are streamlined – a simple click is all it takes. If your profile aligns with what we're seeking, we'll forward an assessment. Our dedicated team works relentlessly behind the scenes to match you with the perfect opportunity.

If you’re reading this article, you’re likely in one of either two camps:

1. First-time Interviewees:
  • You're a newcomer to the tech industry, and you've secured an interview. Naturally, you aspire to excel on your first attempt.
2. Seeking Redemption:
  • You’ve come to that fork in the road and have walked the sad pathway. You don’t want it to happen again. You want to nail the next one.

Either way, the same logic applies to both camps. The main piece of advice that we can give is this:

PREPARATION

Be prepared! Programming interviews can be tough. They will test your knowledge to its fullest extent. Remember, from an employer's perspective, this is about finding the right fit, so you’ll be competing against other developers!

However, while knowledge is paramount, it's not the only key to success during the interview. Think of it like this: just as a well-written code requires an efficient compiler, your knowledge needs composure to shine. Knowledge equips you with answers, but composure allows you to articulate them confidently. Even if you're well-prepared, succumbing to nerves can hinder your performance. Remember, the brain, though powerful, performs best when focused. Don't divert its energy to anxiety or self-doubt. Stay calm, trust your preparation, and let your knowledge guide you.

How do we prepare for a programming interview?

1. Understand the Format: Firstly, understand the format of the interview. Is it going to be a coding interview? System design? Behavioral? Perhaps, a mix? Knowing the format will help you tailor your preparation effectively.

2. Review Your Fundamentals: Refresh your knowledge in algorithms, data structures, and complexity analysis. Make sure you understand the basics like arrays, strings, linked lists, trees, graphs, stacks, queues, sorting algorithms, and search algorithms. Websites like LeetCode, HackerRank, and GeeksforGeeks provide plenty of practice problems.

3. Practice Coding: Write code on paper or a whiteboard to simulate the interview environment. This helps you get used to not having a code editor's help during the actual interview. Solve problems from different categories and with varying difficulty levels.

4. Mock Interviews: Practice with peers or use platforms like Pramp or Interviewing.io for mock interviews. This can help you get comfortable speaking out loud as you code and explaining your thought process.

4. System Design: If your interview includes system design questions, prepare by understanding how to approach designing large systems. Learn about common architectures, scalability, data modeling, and API design. Websites and resources like "System Design Primer" on GitHub can be useful.

6. Behavioral Questions: Prepare for behavioral questions by reflecting on past experiences. Be prepared to discuss challenges you've faced, how you've worked with a team, and what you've accomplished.

7. Technical Preparation: If the job involves specific languages or technologies, make sure you're familiar with them. Review their documentation and practice writing code using them.

8. Study the Company and Its Products: Understand the company’s products, services, culture, and the role you're interviewing for. This will help you tailor your answers and show your interest in the position.

9. Rest and Relax: Before the interview, make sure to rest and relax. A clear mind will help you think better during the interview.

10. Prepare Your Questions: Have a list of questions to ask the interviewer. This could be about the company culture, team, or specifics about the role you're applying for. It shows you're interested and have done your homework.

Remember, consistent practice and review are key to success in programming interviews. Also, after each practice session or mock interview, take time to reflect on what went well and what could be improved.

Going back to point 9, composure is a necessary component of any interview process. You have to keep cool and focused.

How do we keep our composure?

1. Embrace the worst-case:
  • Look, nobody wants to bomb an interview. You’ve taken out much of your valuable time on this earth to apply for the job, remain in contact with the recruitment team, prepare for the interview, and proceed with the interview itself. It’s a painful feeling to miss out on a job, especially one you really want. But at the end of the day, there’s plenty of opportunity out there. Where one door closes, another may open.
  •  Don’t put so much pressure on yourself to land a specific job that you buckle under the pressure and lose out on it. Sometimes you will miss out because another candidate is more qualified, or someone in the company wanted to hire their nephew for the role, or some other outcome that’s ultimately out of your control occurs. Just do the best you can do and hope that it’ll be good enough. You’ll find a lot of the time that it is. Or at the very least, you’ll be able to maintain your pride and confidence in the knowledge that you tried your best.
2. Consider the best case scenario:
  • What if everything is in your favor? What if facing the interview guarantees the job? You're a competent programmer. You're well-versed, well-prepared, and have all the tools needed to succeed. So, why the doubt? Envision your success and let that motivate you to perform to your fullest potential.

Navigating the world of programming interviews can be a rollercoaster of emotions. From the anticipation of showcasing your skills to the nerves of being put to the test, it's a journey that requires both technical prowess and mental fortitude. But with the right preparation and mindset, you can position yourself as a standout candidate. Remember, every interview, whether it leads to a job offer or not, is a learning experience. Each one hones your skills, bolsters your confidence, and brings you one step closer to your dream role. Keep pushing, keep learning, and most importantly, believe in yourself. After all, success in interviews, much like coding, often boils down to persistence and a positive attitude. Best of luck out there! 👩‍💻👨‍💻🌟

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