You’re in a technical interview, and the hiring manager leans forward: “Tell me about a time you optimized a slow system.” Your heart rate spikes. This isn’t just a question about code; it’s a test of your problem-solving methodology, your technical depth, and your ability to deliver tangible business value. A vague answer won’t cut […]
22
Nov
Nov
Debugging is more than just fixing errors—it’s a critical thinking exercise that separates good developers from great ones. In technical interviews, describing how you tackled a complex bug can showcase your problem-solving skills, patience, and technical depth. I recall a particularly elusive issue in a high-traffic e-commerce web app: intermittent cart failures that frustrated users […]
15
Nov
Nov
During a code review last year, I noticed our team was spending more time fixing bugs than building features. Our codebase had become a tangled web of inconsistent patterns, making even simple changes risky and time-consuming. If you’ve ever inherited a legacy system or worked on a rapidly growing codebase, you know the frustration. This […]
02
Nov
Nov
When the pager goes off at 2 AM, your heart rate spikes. Production is down, customers are affected, and all eyes are on you. This scenario is every engineer’s nightmare, but it’s also the ultimate test of technical skill and composure. In technical interviews, hiring managers love asking about production incidents because they reveal how […]
29
Oct
Oct
When asked in a technical interview to explain how I ensured scalability and performance in a system I designed, I always start with a simple truth: building for scale isn’t just about handling more users—it’s about creating a resilient, efficient architecture that grows seamlessly. In this article, I’ll walk you through the key strategies I […]
20
Oct
Oct
It’s a scenario every developer knows all too well: the project manager is emphasizing the non-negotiable launch date, while your engineering mind is screaming about technical debt, scalability, and clean code. How you navigate this tension is a defining trait of a senior engineer. The interview question, “Tell us about a time you had to […]
10
Oct
Oct
In technical interviews, you’re often asked to describe a time you optimized a slow system or process. This isn’t just about testing your problem-solving skills—it’s about showcasing your methodical approach, analytical thinking, and impact. Whether you’re a developer, DevOps engineer, or SEO specialist, mastering this narrative can set you apart. In this article, I’ll walk […]
10
Oct
Oct
Navigating technical interviews often involves recounting past project experiences, and one of the most telling questions is about your biggest challenge and how you overcame it. This question isn’t just about problem-solving; it’s a window into your resilience, analytical skills, and ability to learn from adversity. In this article, we’ll delve into a structured approach […]
22
Apr
Apr
System Design Interview (Phỏng vấn Thiết kế Hệ thống) – chỉ nghe tên thôi cũng đủ khiến nhiều kỹ sư phần mềm, từ junior đến senior, cảm thấy “lạnh sống lưng”. Nó mơ hồ, rộng lớn, không có một đáp án đúng duy nhất, và thường là yếu tố quyết định xem bạn có nhận […]
30
Dec
Dec
Khi làm việc với kiến trúc microservice, chúng ta thường đối mặt với câu hỏi quan trọng: Có nên lưu trữ dữ liệu từ các service khác trong service hiện tại, hay chỉ gọi API mỗi khi cần thông tin? Hãy cùng xem xét vấn đề này qua ví dụ thực tế: Bối cảnh Giả […]
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