Technical Background and Programming Skills Questions
Clearly communicate your programming experience, including languages you're proficient in (C#, C++, JavaScript, Python). Mention any relevant coursework in data structures, algorithms, computer graphics, or physics simulation. Be honest about knowledge gaps while showing willingness to learn.
HardTechnical
0 practiced
Compare asynchronous programming models across Python (asyncio), JavaScript (event loop + Promises), C# (async/await + TPL), and C++ (Boost.Asio/futures). For a distributed orchestration service scheduling thousands of I/O-bound tasks with retries, prioritization, and observability requirements, evaluate which model(s) scale best and explain trade-offs in error propagation, debugging, and integration with existing ecosystems.
HardTechnical
0 practiced
A production pipeline intermittently crashes in a C++ consumer with core dumps; the producer is Python and no Python stack traces are available. Describe a structured triage plan: reproducing locally, collecting and symbolizing core dumps, logging and capturing raw messages to reproduce inputs, enabling sanitizers (ASan/UBSan), fuzzing deserialization boundaries, and temporary mitigation steps to reduce impact.
EasyTechnical
0 practiced
As a data scientist building an interactive HTML dashboard, show a short vanilla JavaScript example that attaches a click handler to an SVG circle (a datapoint) and updates an HTML detail panel with the clicked point's info. Mention performance pitfalls when manipulating many DOM nodes and one quick mitigation (e.g., event delegation or virtual DOM).
MediumTechnical
0 practiced
Explain the JavaScript event loop, the difference between macrotasks and microtasks, and how Promise.then, async/await, and setTimeout are scheduled. For a dashboard that polls a server every second and updates charts, explain how misunderstanding the event loop can lead to UI jank and how to structure polling and updates to keep the UI responsive.
EasyTechnical
0 practiced
In JavaScript implement a function makeCounter() that returns an object with methods increment() and value() using closures to keep the internal count private. Explain why closures are useful and give a practical example where this pattern helps in a data visualization front-end (for example, tracking user interactions or debounced counters).
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