What is the interview process for Software Engineer at BNY Mellon?

The Principal Developer role at BNY Mellon is a senior individual contributor position responsible for designing, developing, and implementing complex software solutions. This role requires a deep understanding of software architecture, strong problem-solving skills, and the ability to mentor junior engineers. The interview process is rigorous and designed to assess technical expertise, leadership potential, and cultural fit.

How many interview rounds does BNY Mellon have for Software Engineer?

BNY Mellon has 4 interview rounds for the Software Engineer position: Data Structures and Algorithms, System Design & Architecture, Behavioral and Leadership Assessment, Strategic and Executive Alignment.

Principal Developer (L) at BNY Mellon - Interview Guide

Evaluation

What they measure.

Technical depth and breadth in relevant technologies.
System design and architectural skills.
Problem-solving and analytical abilities.
Leadership and mentoring capabilities.
Communication and interpersonal skills.
Cultural fit and alignment with BNY Mellon's values.

Preparation

How to prepare.

Tips

Thoroughly review your resume and be prepared to discuss every project in detail.
Brush up on core computer science fundamentals: data structures, algorithms, operating systems, and databases.
Practice system design problems, focusing on scalability, reliability, and performance.
Understand BNY Mellon's business and its role in the financial industry.
Prepare examples for behavioral questions using the STAR method (Situation, Task, Action, Result).
Research common interview questions for Principal Developer roles at financial institutions.
Be ready to discuss your leadership style and experience mentoring others.
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

Foundational Computer Science

Weeks 1-2: Data Structures, Algorithms, OS, Databases.

Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these in your preferred language and analyze their time and space complexity. Review operating system concepts like processes, threads, memory management, and concurrency. Study database fundamentals, including SQL, NoSQL, indexing, and transaction management.

Questions

Commonly asked.

Design a system to handle real-time stock price updates for millions of users.
How would you design a distributed caching system for a large e-commerce platform?
Describe a challenging debugging scenario you encountered and how you resolved it.
What are the trade-offs between SQL and NoSQL databases for a financial transaction system?
How do you ensure data consistency in a microservices architecture?
Tell me about a time you had to lead a team through a major technical change.
What are your thoughts on the future of cloud computing in the financial industry?
How do you approach performance optimization for a latency-sensitive application?
Describe your experience with CI/CD pipelines and automated testing.
How do you mentor junior developers and foster their growth?

Locations

Regional differences.

Fig · Regions — 03 locations

01 / 03

Location

New York

Interview focus

Deep dive into system design for financial services.Understanding of regulatory compliance in financial technology.Experience with large-scale distributed systems.Leadership and mentorship capabilities.

Common questions

Describe a time you had to influence a team to adopt a new technology. What was the outcome?
How do you approach designing a highly available and scalable system for financial transactions?
Tell me about a complex technical challenge you faced and how you overcame it.
What are your strategies for mentoring and developing junior engineers?
How do you stay updated with the latest trends in software development and financial technology?

Tips

Emphasize experience with financial regulations (e.g., SOX, GDPR).
Be prepared to discuss specific financial products or services you've worked with.
Highlight any experience with cloud platforms (AWS, Azure, GCP) in a regulated environment.
Showcase your ability to lead technical initiatives and mentor teams.

Rounds

Round-by-round.

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

Hard

Technical Interview (Coding) · 60 min · Senior Software Engineer / Tech Lead

This round focuses on assessing your core technical skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will evaluate your ability to write clean, efficient, and well-tested code, as well as your approach to problem-solving and your understanding of algorithmic complexity. Expect questions that test your knowledge of trees, graphs, dynamic programming, and string manipulation.

What they look for

Strong grasp of fundamental computer science principles.Ability to translate requirements into efficient code.Clear and logical thinking process.Attention to detail in coding and problem-solving.

Evaluation

Proficiency in data structures and algorithms.
Coding ability and clean code practices.
Problem-solving approach.
Understanding of time and space complexity.

Sample questions

Given a binary tree, find the lowest common ancestor of two given nodes.
Data StructuresTreesAlgorithms
Implement a function to find the k-th largest element in an unsorted array.
ArraysSortingAlgorithms
Write a program to detect cycles in a directed graph.
GraphsAlgorithmsData Structures

Prep for this round

01Practice coding problems on platforms like LeetCode, HackerRank, or AlgoExpert.
02Focus on understanding the underlying algorithms and data structures, not just memorizing solutions.
03Practice explaining your thought process out loud as you code.
04Be prepared to discuss edge cases and optimize your solutions.

Common rejection reasons

×Lack of fundamental understanding in core CS concepts.
×Inability to articulate thought process during problem-solving.
×Poor performance in coding exercises.
×Not demonstrating sufficient analytical skills.

Hard

System Design Interview · 75 min · Senior Staff Engineer / Architect

This round assesses your ability to design robust, scalable, and maintainable software systems. You will be presented with a high-level problem statement (e.g., design a URL shortener, a social media feed, or a payment gateway) and expected to design a system to meet the requirements. The interviewer will probe your design choices, focusing on aspects like scalability, availability, fault tolerance, data consistency, and performance. Be prepared to discuss trade-offs and justify your decisions.

What they look for

Ability to design complex, large-scale systems.Deep understanding of distributed systems concepts.Sound reasoning for design choices.Consideration of trade-offs and potential bottlenecks.Familiarity with modern architectural patterns.

Evaluation

System design and architectural skills.
Understanding of distributed systems principles.
Ability to handle scalability, reliability, and performance.
Trade-off analysis and justification of design decisions.
Knowledge of various system components (databases, caches, queues, etc.).

Sample questions

Design a system like Twitter's news feed.
System DesignScalabilityDistributed Systems
Design an API rate limiter.
System DesignAPIsScalability
Design a distributed key-value store.
System DesignDistributed SystemsDatabases

Prep for this round

01Study common system design patterns and architectures.
02Practice designing various systems, considering different components and their interactions.
03Understand concepts like load balancing, caching, database sharding, message queues, and CAP theorem.
04Be prepared to draw diagrams and explain your design clearly.
05Think about potential failure points and how to mitigate them.

Common rejection reasons

×Inability to design scalable and reliable systems.
×Poor understanding of distributed system concepts.
×Lack of clarity in explaining design choices and trade-offs.
×Failure to consider non-functional requirements like security and performance.

Hard

Behavioral & Leadership Interview · 45 min · Engineering Manager / Director

This round focuses on your leadership potential, behavioral competencies, and overall fit with the team and company culture. You'll be asked questions about your past experiences, focusing on situations where you demonstrated leadership, teamwork, conflict resolution, and problem-solving. The interviewer will also assess your communication style, your approach to mentoring, and your understanding of BNY Mellon's values. Be prepared to provide specific examples using the STAR method.

What they look for

Evidence of technical leadership and initiative.Ability to mentor and guide junior engineers.Strong communication and collaboration skills.Proactive problem-solving and ownership.Alignment with BNY Mellon's culture and values.

Evaluation

Leadership qualities and experience.
Mentoring and team development skills.
Problem-solving and decision-making abilities.
Communication and interpersonal skills.
Cultural fit and alignment with BNY Mellon's values.
Strategic thinking and ownership.

Sample questions

Tell me about a time you had to lead a team through a difficult technical challenge.
BehavioralLeadership
Describe a situation where you disagreed with a technical decision made by your manager. How did you handle it?
BehavioralCommunicationConflict Resolution
How do you mentor junior engineers? Provide an example.
BehavioralMentorshipLeadership

Prep for this round

01Prepare specific examples using the STAR method for common behavioral questions (e.g., leadership, teamwork, conflict resolution, failure).
02Reflect on your strengths and weaknesses as a leader and engineer.
03Understand BNY Mellon's mission, values, and culture.
04Think about how you can contribute to the team and the company.
05Prepare thoughtful questions to ask the interviewer.

Common rejection reasons

×Lack of leadership experience or potential.
×Poor communication and interpersonal skills.
×Inability to provide specific examples for behavioral questions.
×Not demonstrating alignment with company values.
×Lack of strategic thinking or ownership.

Hard

Managerial / Executive Interview · 45 min · Senior Engineering Leader / VP of Engineering

This final round is typically with a senior leader to assess your strategic thinking, business acumen, and overall fit for a Principal Developer role. You'll discuss your vision for technology, how you align technical solutions with business objectives, and your experience influencing stakeholders at various levels. The interviewer wants to understand your potential to contribute to the broader technical strategy of the organization.

What they look for

A forward-thinking mindset and ability to shape technical strategy.Understanding of how technology drives business value.Strong communication and influencing skills.A proactive and innovative approach.Alignment with the expectations of a senior technical leader.

Evaluation

Strategic thinking and technical vision.
Understanding of business impact and goals.
Ability to influence and communicate with senior stakeholders.
Experience in driving innovation.
Overall fit for a Principal Developer role.

Sample questions

What is your vision for the future of software development in the financial industry?
StrategyVisionIndustry Trends
How do you balance technical debt with the need for rapid feature delivery?
StrategyTechnical DebtPrioritization
Describe a time you influenced senior leadership on a significant technical decision.
LeadershipInfluenceCommunication

Prep for this round

01Understand BNY Mellon's business strategy and how technology supports it.
02Think about industry trends and their potential impact on financial services.
03Be prepared to discuss your long-term career goals and how they align with the Principal Developer role.
04Articulate your vision for technical excellence and innovation.
05Prepare insightful questions about the company's technical direction and challenges.

Common rejection reasons

×Lack of strategic vision.
×Inability to connect technical solutions to business goals.
×Poor communication with senior stakeholders.
×Not demonstrating a proactive approach to innovation.
×Misalignment on career aspirations or role expectations.

DSA

Coding questions at BNY Mellon.

Frequently reported on BNY Mellon loops

View all at BNY Mellon

Principal Developer

What they measure.

How to prepare.

Foundational Computer Science

System Design & Architecture

Behavioral & Leadership Preparation

Domain Specifics & Practice

Commonly asked.

Regional differences.

New York

London

Pune

Round-by-round.

Coding questions at BNY Mellon.

More at BNY Mellon.