Scale Engineer

Software Engineer

Software EngineerL3Medium

This interview process is for a Software Engineer position at Citadel, specifically for the L3 level. It is designed to assess a candidate's technical skills, problem-solving abilities, and cultural fit within the company.

Rounds·3

Timeline·~14d

Experience·1 - 3 yrs

Comp band·US$90000 - US$120000

Interview time·135 min

Evaluation

What they measure.

  • Technical proficiency in relevant programming languages (e.g., Python, Java, C++)
  • Understanding of data structures and algorithms
  • Problem-solving skills and logical thinking
  • Ability to write clean, efficient, and maintainable code

Preparation

How to prepare.

Tips

  1. Review fundamental computer science concepts.
  2. Practice coding problems regularly, focusing on time and space complexity.
  3. Prepare for behavioral questions by thinking about your past experiences using the STAR method (Situation, Task, Action, Result).
  4. Research Citadel's values, mission, and recent projects.
  5. Prepare thoughtful questions to ask the interviewer.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms Fundamentals

Weeks 1-2: Data Structures & Basic Algorithms. Cover arrays, linked lists, trees, sorting, searching.

Weeks 1-2: Focus on core data structures (arrays, linked lists, stacks, queues, trees, hash maps) and their time/space complexity. Practice basic algorithms like sorting (merge sort, quicksort) and searching (binary search).

Questions

Commonly asked.

  • Write a function to reverse a linked list.
  • Given an array of integers, find the two numbers that add up to a specific target.
  • Design a system to handle real-time notifications.
  • Tell me about a time you faced a technical challenge and how you overcame it.
  • How would you optimize a slow database query?

Locations

Regional differences.

Fig · Regions — 03 locations

01 / 03

Location

New York

Interview focus

Adaptability to local work cultureCommunication skills in the local language (if applicable)Understanding of local market trends

Common questions

  • Tell me about a challenging project you worked on.
  • How do you handle tight deadlines?
  • Describe a time you disagreed with a teammate.

Tips

  • Research common business practices in this region.
  • Be prepared to discuss your experience with local technologies or frameworks.
  • Understand the company's presence and impact in this specific location.

Rounds

Round-by-round.

Expand a step for evaluation criteria, sample questions, and prep notes.

DSA

Coding questions at Citadel.

Frequently reported on Citadel loops

View all at Citadel

Other guides

More at Citadel.