JPMorgan Chase Engineering Manager Interview Questions

1.Tell me about a direct report or peer who was struggling technically or professionally. How did you identify the issue and what specific steps did you take to help them succeed?

2.Describe a time when you discovered a significant risk or potential failure in your system before it became a production incident. How did you handle it and what was the outcome?

3.Tell me about a time you made a technical decision that slowed down your team's development but was better for the end client experience. What was the decision and how did you communicate it?

4.Describe a time you had to give difficult feedback to someone on your team about their performance or behavior. What was the issue, how did you approach the conversation, and what happened afterward?

5.Walk me through the last production incident you owned from detection to resolution. What went wrong, how did you coordinate the response, and what changes did you implement afterward?

6.Tell me about a project where you had to choose between what your engineering team wanted to build versus what would actually solve the client's problem. How did you handle that tension?

7.Your Spring Boot application is making too many database calls and the DBA team is complaining about connection pool exhaustion. The app uses JPA with Hibernate. How do you diagnose and fix this?

8.Your team is building a feature for Chase Mobile that requires storing sensitive customer PII. How do you design the data layer to meet both performance and compliance requirements?

9.Your team maintains the fraud detection pipeline for Chase Mobile Banking. You notice that false positive rates have increased by 15% over the past month, but the ML team says their new model is performing better on their offline metrics. How do you resolve this?

10.You need to implement a real-time risk calculation engine that processes market data streams from Kafka and updates positions for thousands of traders. The calculations must complete within 100ms. What's your technical approach?

11.You're migrating a legacy trading system that processes $100B in daily transactions from our data center to AWS. The migration will take 6 months, but your team wants to rewrite the entire system to use microservices. How do you approach this decision?

12.You're designing the API architecture for a new payment processing service that needs to handle 50,000 transactions per second. The service must integrate with both legacy mainframe systems and modern cloud services. What's your approach?

13.Design the real-time balance update system for Chase Mobile Banking that serves 80 million customers. When someone makes a purchase, deposits cash, or transfers money, their balance needs to update instantly across mobile, web, and ATMs.

14.Design the session management system for JPMorgan's internal LLM Suite that's deployed to 200,000 employees. Users can have long-running conversations with AI assistants, and their chat history needs to be searchable and compliant with data retention policies.

15.You're building the notification service for J.P. Morgan Markets that alerts thousands of traders when market conditions change or trades execute. The system needs to handle 100,000 notifications per second during market open.

16.Design the blockchain transaction validator for Onyx by J.P. Morgan that processes JPM Coin payments. The system needs to validate transaction authenticity, check account balances, and update the distributed ledger across multiple data centers.

17.Design the ledger reconciliation system for JPMorgan Payments that processes $10 trillion in daily transactions. The system must detect discrepancies between internal ledgers and external bank confirmations within hours, not days.

18.You're designing the order matching engine for J.P. Morgan Markets that needs to match buy and sell orders in under 50 microseconds. The system handles millions of orders per day across equities, FX, and fixed income.

19.Tell me about a time you had to convince a senior stakeholder or leadership team to adopt a technology decision they initially resisted. What was your approach and what happened?

20.Describe a situation where you had to coordinate multiple engineering teams to deliver a critical project. How did you ensure alignment and handle competing priorities?

21.Tell me about a time you inherited a team or codebase with significant technical debt. How did you balance addressing the debt with delivering new features?

22.Describe a time when you had to make a decision with incomplete information that could impact system reliability. How did you approach the decision and what was the outcome?

23.Tell me about a time you had to rebuild trust with a client or business stakeholder after your team failed to deliver. What steps did you take and how long did it take to repair the relationship?

24.Describe a situation where you had to advocate for a significant increase in your team's headcount or budget. How did you build the business case and what obstacles did you overcome?

25.A client using J.P. Morgan Markets is complaining that their FX trades are executing 20ms slower than normal, but your monitoring shows all systems green. How would you investigate this performance regression?

26.Estimate how much revenue Chase Mobile generates annually from interchange fees. Walk me through your assumptions and calculation approach.

27.You're launching a new feature in Chase Mobile that could potentially increase customer acquisition costs by $50 per customer if adoption is low. How do you set success metrics and make a go/no-go decision after the first week?

28.Your team needs to estimate the compute cost impact of enabling real-time anti-money laundering scanning for all JPMorgan Payments transactions. The current batch processing runs overnight and costs $2M annually. What's your approach?

29.Onyx by J.P. Morgan wants to add support for cross-border payments using JPM Coin, but initial analysis shows transaction confirmation times of 30 seconds versus our target of under 5 seconds. How would you diagnose the performance bottleneck?

30.You're designing capacity planning for the LLM Suite that serves 200,000 JPMorgan employees. Usage has grown 400% in the last quarter, but 80% of requests happen between 9 AM and 11 AM ET. How do you optimize infrastructure costs while maintaining performance?