III

What they look for

Evaluation

• Ability to design scalable, reliable, and maintainable systems.
• Understanding of distributed system concepts (e.g., consistency, availability, partitioning).
• Knowledge of various architectural patterns and technologies.
• Ability to articulate design choices and justify trade-offs.
• Consideration of non-functional requirements (performance, security, cost).

Sample questions

• Design a URL shortening service like bit.ly.

  System DesignScalabilityAPI Design

• Design a real-time notification system.

  System DesignWebSocketsScalability

• Design a distributed key-value store.

  System DesignDistributed SystemsConsistency

Prep for this round

1. 01Study common system design patterns and architectural styles.
2. 02Review concepts like load balancing, caching, databases, message queues, and microservices.
3. 03Practice designing systems like Twitter, Uber, Netflix, etc.
4. 04Be prepared to discuss trade-offs between different design choices.

Common rejection reasons

• ×Lack of understanding of distributed system principles.
• ×Inability to design scalable and reliable systems.
• ×Poor consideration of trade-offs.
• ×Failure to address non-functional requirements like availability and latency.

What they look for

Evaluation

• Behavioral competencies (teamwork, communication, leadership, problem-solving).
• Alignment with Comcast's core values.
• Self-awareness and ability to reflect on past experiences.
• Motivation and passion for the role and company.
• Cultural fit and ability to collaborate effectively.

Sample questions

• Tell me about a time you faced a significant challenge at work and how you overcame it.

  BehavioralProblem SolvingResilience

• Describe a situation where you had to work with a difficult colleague. How did you handle it?

  BehavioralTeamworkConflict Resolution

• Give an example of a time you took initiative or demonstrated leadership.

  BehavioralLeadershipInitiative

Prep for this round

1. 01Prepare examples for common behavioral questions (e.g., teamwork, conflict resolution, leadership, failure).
2. 02Use the STAR method to structure your answers.
3. 03Research Comcast's values and culture.
4. 04Be honest and authentic in your responses.
5. 05Think about why you want to work at Comcast specifically.

Common rejection reasons

• ×Lack of self-awareness.
• ×Inability to provide specific examples.
• ×Negative attitude or poor interpersonal skills.
• ×Mismatch with company values or team dynamics.
• ×Dishonesty or exaggeration.

What they look for

Evaluation

• Mutual understanding of the role and responsibilities.
• Alignment of candidate's career goals with the opportunity.
• Candidate's enthusiasm and engagement.
• Discussion of compensation and benefits.
• Overall fit with the team and manager's expectations.

Sample questions

• What are your career goals for the next 3-5 years?

  BehavioralCareer Goals

• What interests you most about this specific role at Comcast?

  BehavioralMotivation

• Do you have any questions for me about the team or the company?

  BehavioralEngagement

Prep for this round

1. 01Prepare thoughtful questions about the team, projects, and growth opportunities.
2. 02Reiterate your interest and enthusiasm for the role.
3. 03Be ready to discuss your salary expectations (if not already finalized).
4. 04Ensure you have a clear understanding of the role's responsibilities.

Common rejection reasons

• ×Lack of alignment on expectations.
• ×Unrealistic salary expectations.
• ×Poor fit with the team's dynamic or manager's style.
• ×Lack of enthusiasm for the specific role or team.