How Intel Interviews in 2026: Process, Questions & What They Score

1. 01

   Write a function that accepts an array of integers and returns the two numbers whose sum is closest to zero (a Two Sum variant).

   Two Sum variant: sort plus two pointers to find the pair with sum closest to zero.

2. 02

   Two Sum

   The canonical warm-up: hash map complement lookup for O(n).

3. 03

   Trapping Rain Water

   Two-pointer or prefix-max technique; water at each bar is the min of best walls on either side.

4. 04

   Number of Islands

   Grid flood fill: DFS/BFS connected-component counting with visited marking.

5. 05

   Check the endianness of a system.

   Systems knowledge: detect byte order using a union or a char pointer into an int.

6. 06

   Determine which direction the stack grows on a given system.

   Systems probe: compare addresses of locals across nested function calls.

7. 07

   Write a C program for a classical synchronization problem (e.g., producer-consumer).

   Classic synchronization: mutexes with condition variables or semaphores and bounded-buffer correctness.

8. 08

   General OS-level questions on processes, memory, and threading.

   OS fundamentals: processes versus threads, virtual memory, scheduling, and synchronization basics.

Reported problems, listed so you know what to expect. Practice them in your own editor or on the platform you prefer; SupaCV's practice mode coaches how you talk through them.

1. 01

   Design a Parking Lot System.

   Object-oriented design staple: entity modeling, spot allocation strategy, and extensibility.

2. 02

   Design a Traffic Signal Controller.

   State-machine design: signal states, transitions, timing, and safety interlocks.

3. 03

   Design an Elevator System.

   OOD classic: request scheduling, elevator state machine, and multi-car dispatch strategy.

4. 04

   Discuss a system design with a hardware/software-interface angle (e.g., how a driver or firmware layer communicates with hardware, or a telemetry system for CPU monitoring).

   Hardware/software boundary thinking: registers, interrupts, and how a driver or firmware layer talks to hardware.

5. 05

   Explain OOP design tradeoffs and use of smart pointers in a C++ low-level design problem.

   C++ design depth: ownership semantics with smart pointers and OOP trade-offs in low-level code.

Reported problems, listed so you know what to expect. Practice them in your own editor or on the platform you prefer; SupaCV's practice mode coaches how you talk through them.

1. 01

   Explain the difference between a D-latch and a D flip-flop.

   Digital-logic fundamental: level-triggered latch versus edge-triggered flip-flop behavior.

2. 02

   Implement the logic function F = NOT(AB + CD) using CMOS gates.

   CMOS gate design: dual pull-up and pull-down networks for a compound AOI function.

3. 03

   Explain blocking vs. non-blocking assignments in Verilog.

   Verilog semantics: blocking versus non-blocking assignment and where each belongs in RTL.

4. 04

   What is Clock Domain Crossing (CDC) and why can it cause metastability or data corruption?

   Clock-domain-crossing knowledge: metastability causes and synchronizer or FIFO mitigation.

5. 05

   Walk through static timing analysis (STA) concepts such as setup and hold time.

   Timing-analysis fundamentals: setup and hold checks, slack, and what violates each.

6. 06

   Describe clock gating and its role in reducing dynamic power consumption.

   Low-power design knowledge: gating idle clocks to cut dynamic switching power.

7. 07

   How would you approach functional verification for a new IP block?

   Verification methodology: testbench structure, stimulus and coverage strategy, and assertions.

Reported problems, listed so you know what to expect. Practice them in your own editor or on the platform you prefer; SupaCV's practice mode coaches how you talk through them.

1. 01

   Describe your experience working with mechanical or electrical equipment.

   Screens hands-on depth with equipment; expects specific tools, machines, and tasks.

2. 02

   How would you troubleshoot and fix a mechanical problem on the line?

   Structured troubleshooting: isolate, diagnose, fix, and verify a fault on the line.

3. 03

   What do you know about cleanroom protocols and contamination control?

   Knowledge check on cleanroom discipline: gowning, contamination sources, and control practices.

4. 04

   Walk through how you would perform preventive maintenance on a piece of equipment.

   Maintenance methodology: safe shutdown, scheduled checks, and verification before returning equipment to service.

5. 05

   Explain how you would measure current or interpret a diagram involving alarm sensors and calculations (basic quantitative/technical reasoning).

   Basic quantitative reasoning: reading diagrams, sensor logic, and simple electrical calculations.

Reported problems, listed so you know what to expect. Practice them in your own editor or on the platform you prefer; SupaCV's practice mode coaches how you talk through them.

1. 01

   Tell me about a time when you generated a creative idea to solve a problem or improve a work method.

2. 02

   Tell me about a time when you had to gather data and diagnose the cause of a problem before taking action.

3. 03

   Describe a situation where you independently improved the quality of a process, product, or service and how you identified the need for it.

4. 04

   Tell us about a time you had to work long hours to meet a deadline: how did you handle it and how did it affect you?

5. 05

   Tell me about a time you had to manage multiple priorities with tight deadlines.

6. 06

   Describe a disagreement you had with a supervisor or team member and how you resolved it.

7. 07

   What is your greatest weakness, and what are you doing about it?

8. 08

   What can you contribute to Intel?