# Software Engineer
**Role:** Software Engineer · **Level:** Lead Software Engineer
**Company:** [FactSet](https://scaleengineer.com/companies/factset)
**Difficulty:** High
**Salary:** US$150000 - US$200000
**Experience:** 5 - 10
**Timeline:** ~14 days
This interview process is designed to assess candidates for a Lead Software Engineer position at FactSet. It evaluates technical proficiency, problem-solving skills, leadership potential, and cultural fit.
Canonical: https://scaleengineer.com/interviews/factset/lead-software-engineer-software-engineer
---
## Overall evaluation

- Technical Skills
- Leadership & Management
- Behavioral & Cultural Fit

## Questions asked

- Describe a complex system you designed or significantly contributed to. What were the key challenges and how did you address them?
- How do you approach leading a team through a difficult technical challenge?
- Tell me about a time you had to mentor a junior engineer. What was your approach and what was the outcome?
- How do you balance delivering new features with maintaining code quality and addressing technical debt?
- Describe a situation where you disagreed with a technical decision made by your team or manager. How did you handle it?
- What are your strategies for ensuring the scalability and reliability of a system under heavy load?
- How do you foster a culture of innovation and continuous learning within a team?
- Walk me through your process for debugging a critical production issue.
- What are your thoughts on the trade-offs between different database technologies?
- How do you stay current with emerging technologies and evaluate their potential adoption?

## Preparation tips

### lists

- Review core computer science concepts (data structures, algorithms, operating systems, databases).
- Practice system design problems, focusing on scalability, reliability, and maintainability.
- Prepare to discuss your past projects in detail, highlighting your contributions and technical decisions.
- Understand FactSet's business and the financial industry.
- Research common behavioral interview questions and prepare STAR method responses.
- Think about examples of leadership, mentorship, and conflict resolution.
- Prepare thoughtful questions to ask the interviewers about the role, team, and company culture.

### studyPlan

- {"title":"Data Structures & Algorithms","longDescription":"Weeks 1-2: Focus on Data Structures and Algorithms. Review common data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, graph traversal, dynamic programming). Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.","shortDescription":"Weeks 1-2: DSA fundamentals and practice (medium/hard)."}
- {"title":"System Design","longDescription":"Weeks 3-4: Deep dive into System Design. Study architectural patterns (microservices, monolithic), database design (SQL vs NoSQL), caching strategies, load balancing, message queues, and API design. Practice designing large-scale systems.","shortDescription":"Weeks 3-4: System Design principles and practice."}
- {"title":"Behavioral & Leadership","longDescription":"Week 5: Prepare for Behavioral and Leadership questions. Reflect on your career experiences, focusing on examples of leadership, teamwork, problem-solving, and handling challenges. Use the STAR method (Situation, Task, Action, Result) to structure your answers.","shortDescription":"Week 5: Behavioral and Leadership preparation (STAR method)."}
- {"title":"Company & Role Research","longDescription":"Week 6: Research FactSet, its products, and its culture. Prepare specific questions to ask the interviewers. Review any specific technologies mentioned in the job description or relevant to FactSet's work.","shortDescription":"Week 6: Company research and question preparation."}

## Location differences

- {"location":"New York","differences":{"tips":["Be prepared to discuss specific examples of leading technical initiatives.","Highlight your experience in mentoring and developing other engineers.","Emphasize your ability to communicate technical concepts to both technical and non-technical stakeholders.","Research FactSet's technology stack and recent product developments.","Prepare questions that demonstrate your understanding of leadership and strategic thinking."],"interviewFocus":["System Design and Architecture","Technical Leadership and Mentorship","Cross-functional Collaboration","Problem-solving complex technical challenges"],"commonQuestions":["Describe a challenging technical problem you solved in a previous role and how you approached it.","How do you mentor junior engineers and foster their growth?","Tell me about a time you had to influence a team to adopt a new technology or approach.","What are your strategies for ensuring code quality and maintainability in a large codebase?","How do you handle disagreements within a technical team?"]}}
- {"location":"London","differences":{"tips":["Be ready to dive deep into system design scenarios.","Showcase your understanding of distributed systems and microservices.","Highlight any experience with performance optimization and tuning.","Be prepared to discuss your familiarity with various cloud services and their applications.","Prepare questions about FactSet's approach to technical innovation and scalability."],"interviewFocus":["Scalability and Performance","Cloud Technologies","Architectural Patterns","Problem-solving and Debugging"],"commonQuestions":["How do you approach designing scalable and resilient systems?","Describe a situation where you had to make a difficult trade-off in a system design.","How do you stay updated with the latest industry trends and technologies?","Tell me about a time you had to manage technical debt.","What is your experience with cloud platforms (AWS, Azure, GCP)?"]}}
- {"location":"Gurugram","differences":{"tips":["Demonstrate your understanding of agile principles and how to lead a team within that framework.","Be prepared to discuss your experience with CI/CD pipelines and tools.","Highlight your knowledge of security best practices in software development.","Showcase your ability to handle production issues calmly and effectively.","Prepare questions about FactSet's engineering culture and development processes."],"interviewFocus":["Agile Methodologies","DevOps and CI/CD","Security Best Practices","Incident Management"],"commonQuestions":["How do you ensure the security of the systems you build?","Describe your experience with agile methodologies and leading agile teams.","Tell me about a time you had to deal with a production incident.","How do you prioritize tasks and manage your time effectively?","What are your thoughts on continuous integration and continuous delivery (CI/CD)?"]}}

## Round 1: Data Structures and Algorithms
**Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 45 min
Coding challenge focused on data structures and algorithms.
This round focuses on your fundamental programming skills and problem-solving abilities. You will be asked to solve coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your approach to breaking down complex problems.
**Interviewers look for:** Clean and efficient code.; Logical approach to problem-solving.; Understanding of time and space complexity.; Ability to explain thought process.
**Evaluation criteria:** Problem-solving skills; Algorithmic thinking; Data structure knowledge; Coding proficiency
**Common rejection reasons:** Inability to articulate technical solutions clearly.; Lack of depth in problem-solving.; Poor understanding of fundamental computer science concepts.; Inability to adapt to feedback during the interview.
## Questions

- Given an array of integers, find the contiguous subarray with the largest sum.
- Implement a function to reverse a linked list.
- Find the kth smallest element in a binary search tree.

## Preparation tips

- Practice coding problems on platforms like LeetCode, HackerRank.
- Review common data structures and algorithms.
- Be prepared to explain your thought process while coding.
- Practice explaining the time and space complexity of your solutions.

## Round 2: System Design
**Type:** System Design Interview · **Difficulty:** High · **Duration:** 60 min
Design a scalable and robust software system.
This round assesses your ability to design complex, scalable, and reliable software systems. You will be presented with a high-level problem and asked to design a solution, considering aspects like data storage, APIs, scalability, and fault tolerance. The focus is on your architectural thinking and ability to make informed trade-offs.
**Interviewers look for:** Structured approach to design problems.; Understanding of distributed systems.; Ability to identify and mitigate potential bottlenecks.; Clear communication of design decisions.
**Evaluation criteria:** System design principles; Scalability and performance considerations; Reliability and fault tolerance; Trade-off analysis; API design
**Common rejection reasons:** Inability to design scalable and robust systems.; Poor understanding of trade-offs in system design.; Lack of experience with distributed systems concepts.; Difficulty in articulating design choices and justifications.
## Questions

- Design a URL shortening service like Bitly.
- Design a system to handle real-time notifications for a social media platform.
- Design a distributed cache system.

## Preparation tips

- Study common system design patterns and architectures.
- Understand concepts like load balancing, caching, databases (SQL/NoSQL), and message queues.
- Practice designing systems like Twitter feed, URL shortener, or a distributed cache.
- Be prepared to discuss trade-offs and justify your design choices.

## Round 3: Behavioral & Leadership
**Type:** Behavioral & Leadership Interview · **Difficulty:** Medium · **Duration:** 45 min
Assesses leadership, teamwork, and cultural fit.
This round focuses on your behavioral competencies and leadership potential. You'll be asked questions about your past experiences, focusing on how you've handled various situations, including leadership challenges, team collaboration, conflict resolution, and driving projects to completion. The goal is to understand your working style, leadership approach, and how you align with FactSet's culture.
**Interviewers look for:** Examples of taking initiative.; Ability to mentor and guide others.; Effective communication and conflict resolution.; Alignment with FactSet's values.; Proactive and ownership mindset.
**Evaluation criteria:** Leadership qualities; Teamwork and collaboration; Problem-solving approach; Communication skills; Cultural fit
**Common rejection reasons:** Lack of leadership experience or potential.; Poor communication or interpersonal skills.; Inability to provide concrete examples of past achievements.; Not demonstrating alignment with company values.; Difficulty in handling challenging behavioral questions.
## Questions

- Tell me about a time you had to lead a team through a difficult project. What was your role and what was the outcome?
- Describe a situation where you had to resolve a conflict within your team. How did you approach it?
- How do you motivate your team members?

## Preparation tips

- Prepare examples using the STAR method for common behavioral questions.
- Reflect on your leadership experiences, mentoring, and team contributions.
- Understand FactSet's company values and culture.
- Be ready to discuss your career goals and motivations.

## Round 4: Strategic & Executive Alignment
**Type:** Managerial / Executive Interview · **Difficulty:** High · **Duration:** 60 min
Focus on strategic thinking and business alignment.
This final round is with a senior leader and focuses on your strategic thinking, technical vision, and ability to align technology with business objectives. You'll discuss your leadership philosophy, how you approach technical strategy, and your understanding of the broader impact of technology on the business. This is an opportunity to demonstrate your potential as a leader at FactSet.
**Interviewers look for:** Ability to think strategically about technology and business.; Clear vision for technical direction.; Understanding of how technology drives business value.; Strong communication and influencing skills.
**Evaluation criteria:** Strategic thinking; Technical vision; Business acumen; Communication with leadership; Impact and influence
**Common rejection reasons:** Lack of strategic thinking.; Inability to connect technical decisions to business goals.; Poor communication with senior stakeholders.; Not demonstrating a clear vision for the team or product.
## Questions

- What is your vision for a high-performing engineering team?
- How do you ensure that technical decisions align with business priorities?
- Describe a time you had to influence senior leadership on a technical strategy. What was the outcome?

## Preparation tips

- Understand FactSet's business strategy and market position.
- Think about how technology can support and drive business goals.
- Prepare to discuss your vision for a software engineering team.
- Be ready to articulate your leadership philosophy and how you influence others.