Scale Engineer

Software Engineer

Software EngineerFellowVery High

Comcast is seeking a highly experienced and innovative Software Engineer at the Fellow level. This role requires a deep understanding of software development principles, a proven track record of delivering complex projects, and the ability to mentor and lead other engineers. The interview process is designed to assess technical expertise, problem-solving skills, architectural thinking, and cultural fit within Comcast's collaborative environment.

Rounds·4

Timeline·~21d

Experience·10 - 15 yrs

Comp band·US$180000 - US$250000

Interview time·225 min

Evaluation

What they measure.

  • Technical depth and breadth in relevant technologies.
  • Problem-solving and analytical skills.
  • System design and architectural capabilities.
  • Leadership and mentoring potential.
  • Communication and collaboration skills.
  • Cultural fit and alignment with Comcast values.

Preparation

How to prepare.

Tips

  1. Thoroughly review your resume and be prepared to discuss every project and accomplishment in detail.
  2. Practice coding problems focusing on data structures, algorithms, and object-oriented design.
  3. Study system design principles, including scalability, availability, consistency, and fault tolerance.
  4. Prepare behavioral questions using the STAR method (Situation, Task, Action, Result).
  5. Research Comcast's products, services, and recent news to understand their business context.
  6. Understand the specific technologies and programming languages mentioned in the job description.
  7. Prepare thoughtful questions to ask the interviewers about the role, team, and company culture.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms fundamentals. Practice coding.

Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash tables) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these in your preferred language. Review Big O notation for time and space complexity analysis.

Questions

Commonly asked.

  • Design a system to handle real-time video streaming for millions of users.
  • How would you optimize a database query that is causing performance issues in a high-traffic application?
  • Describe a time you had to make a significant technical decision with incomplete information. What was your process?
  • What are the trade-offs between using a monolithic architecture versus a microservices architecture?
  • How do you approach mentoring junior engineers and fostering their technical growth?
  • Tell me about a project where you had to collaborate with cross-functional teams (e.g., product, design, operations).
  • What are your thoughts on the future of AI in software development, and how might it impact Comcast's services?
  • How do you ensure the security of a web application against common vulnerabilities?
  • Describe your experience with cloud platforms like AWS, Azure, or GCP.
  • If you were to build a new feature for Xfinity's streaming service, what would it be and how would you design it?

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

West Coast (e.g., California)

Interview focus

Deep dive into system design and architecture for large-scale, distributed systems.Assessment of leadership potential and ability to mentor junior engineers.Evaluation of strategic thinking and long-term technical vision.Understanding of specific Comcast technologies and their application.

Common questions

  • Describe a time you had to influence a team to adopt a new technology or approach. What was the outcome?
  • How do you approach designing a highly available and scalable system for a large user base?
  • Discuss a complex technical challenge you faced and how you overcame it, focusing on your decision-making process.
  • In a distributed system, how would you handle data consistency and fault tolerance?
  • What are your thoughts on the future of cloud computing and its impact on software development?

Tips

  • Research Comcast's recent technological advancements and strategic initiatives.
  • Be prepared to discuss your contributions to open-source projects or significant industry innovations.
  • Highlight instances where you've driven technical strategy and influenced product roadmaps.
  • For West Coast interviews, expect a strong emphasis on scalability and performance optimization in system design.

Rounds

Round-by-round.

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

DSA

Coding questions at Comcast.

Frequently reported on Comcast loops

View all at Comcast

Other guides

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