Search: train

System Design: Design GitHub Copilot — AI Code Assistant, Code Completion, Context Retrieval, Model Serving, Privacy

⏱ 7 min read GitHub Copilot and similar AI code assistants (Cursor, Codeium, Amazon CodeWhisperer) generate code suggestions in real-time as developers type. Designing […] Read article

Apr 21, 2026 System Design

Go (Golang) Interview Questions 2025 — Goroutines, Channels, Interfaces, Error Handling, Context, Generics

⏱ 6 min read Go is the language of cloud infrastructure — powering Kubernetes, Docker, Terraform, and most modern backend services at companies like […] Read article

Apr 21, 2026 Coding Interview Questions

System Design: Design Enterprise Search (Slack/Confluence) — NLP Query Understanding, Faceted Search, Permissions

⏱ 6 min read Enterprise search powers knowledge discovery within organizations — searching across documents, messages, code, and wikis. Unlike web search (rank by […] Read article

Apr 21, 2026 System Design

AI/ML Interview: AI Agents — Tool Use, Chain-of-Thought, Planning, Function Calling, RAG Agents, Autonomous Systems

⏱ 6 min read AI agents are LLMs that can reason, plan, and take actions in the world — calling APIs, querying databases, writing […] Read article

Apr 21, 2026 AI/ML Interview Questions

AI/ML Interview: Responsible AI — Fairness, Bias, Explainability, Model Interpretability, Privacy, AI Safety

⏱ 7 min read Responsible AI is increasingly tested in ML interviews as companies face regulatory pressure, public scrutiny, and genuine ethical concerns about […] Read article

Apr 21, 2026 AI/ML Interview Questions

System Design: Design Content Moderation System — ML Classification, Human Review, Appeals, Policy Enforcement

⏱ 6 min read Content moderation protects billions of users from harmful content on social platforms, marketplaces, and communication apps. Designing a moderation system […] Read article

Apr 21, 2026 System Design

AI/ML Interview: Reinforcement Learning — Q-Learning, Policy Gradient, Reward Shaping, RLHF, Multi-Armed Bandit

⏱ 6 min read Reinforcement learning (RL) trains agents to make sequential decisions by maximizing cumulative reward. RL powers game-playing AI (AlphaGo, OpenAI Five), […] Read article

Apr 21, 2026 AI/ML Interview Questions

AI/ML Interview: Generative AI — Diffusion Models, Stable Diffusion, GANs, VAEs, Image Generation, Text-to-Image

⏱ 6 min read Generative AI creates new content — images, text, audio, video — that did not exist before. Diffusion models (Stable Diffusion, […] Read article

Apr 21, 2026 AI/ML Interview Questions

AI/ML Interview: Model Evaluation Metrics — Precision, Recall, F1, AUC-ROC, Confusion Matrix, Cross-Validation

⏱ 6 min read Choosing the right evaluation metric is as important as choosing the right model. Using accuracy for an imbalanced fraud detection […] Read article

Apr 21, 2026 AI/ML Interview Questions

AI/ML Interview: Data Preprocessing — Feature Engineering, Missing Data, Encoding, Scaling, Imbalanced Classes

⏱ 6 min read Data preprocessing and feature engineering are responsible for 80% of ML project success — not the model architecture. Understanding how […] Read article

Apr 21, 2026 AI/ML Interview Questions