Interview preparation

Citi interview process & preparation

Citi currently has 218+ live openings on OnJob.io, concentrated in Software Engineer, Data Analyst and Customer Support roles. There are no leaked or company-specific questions here — instead, prepare with the general, role-based interview rounds and most-asked questions for those role types below, then practise them free with OnJob's AI mock interview.

Practise with AI mock interview See live Citi jobs

Honest note: OnJob.io does not publish leaked or company-confidential interview questions. The guides below are general, role-based preparation — the standard rounds and commonly-asked questions for the role types Citi is currently hiring for. Use them to prepare; your real Citi interview may differ.

What to expect when interviewing for Software Engineer, Data Analyst and Customer Support roles at companies like Citi

Citi is currently advertising these role types on OnJob.io. Each guide is the general interview structure and most-asked questions for that role — prepare with it, then rehearse free with the AI mock interview.

General Software Engineer interview prep

11 live roles at Citi

Coding, data structures, algorithms and system design — the core software engineering loop used by product companies and startups across India.

Typical Software Engineer interview rounds

1 Online assessment. Timed coding problems on arrays, strings and hashing on HackerRank or HackerEarth.
2 DSA / problem solving. 1–2 live coding rounds on data structures, algorithms and complexity analysis.
3 System design. Designing a scalable service (mid/senior); low-level design for early-career.
4 Hiring manager / culture fit. Past projects, ownership, behavioural questions and team fit.

Commonly-asked Software Engineer questions

Reverse a linked list, both iteratively and recursively.
Find the two numbers in an array that add up to a target sum.
Detect whether a linked list has a cycle.
What is the difference between a process and a thread?
Explain time and space complexity (Big O) with examples.
How does a hash map work internally, and what happens on collisions?
Find the longest substring without repeating characters.
What is the difference between an array and a linked list?

Full Software Engineer prep AI mock interview

General Data Analyst interview prep

10 live roles at Citi

SQL, Excel, statistics and storytelling with data — the analyst interview for product, BI and analytics teams across India.

Typical Data Analyst interview rounds

1 SQL round. Joins, aggregations, window functions and query writing.
2 Excel / spreadsheet round. Lookups, pivot tables and formulas.
3 Case / analytics round. Business case: define metrics, analyse and recommend.
4 Tool & viz round. Power BI / Tableau dashboards and stakeholder communication.

Commonly-asked Data Analyst questions

What is the difference between INNER JOIN, LEFT JOIN and FULL OUTER JOIN?
Write a SQL query to find the second-highest salary in a table.
What is the difference between WHERE and HAVING?
Explain window functions like ROW_NUMBER(), RANK() and DENSE_RANK().
What is the difference between mean, median and mode, and when is each misleading?
How do you handle missing or null values in a dataset?
Explain the difference between a primary key and a foreign key.
What is normalisation, and why does it matter for analysis?

Full Data Analyst prep AI mock interview

General Customer Support interview prep

8 live roles at Citi

Communication, empathy, problem-solving and process — the customer-support / customer-success interview for BPOs, SaaS and D2C teams.

Typical Customer Support interview rounds

1 Communication screen. Spoken clarity, tone and listening.
2 Scenario / role-play. Handle an angry customer or a tricky query live.
3 Behavioural. Past support experience, handling pressure and escalations.
4 Process & tools. CRM, ticketing, SLAs and metrics.

Commonly-asked Customer Support questions

How would you handle an angry or frustrated customer?
Tell me about a time you turned an unhappy customer into a happy one.
What does good customer service mean to you?
How do you handle a customer asking for something you can't provide?
What would you do if you don't know the answer to a customer's question?
How do you stay calm and professional under pressure?
Explain the difference between empathy and sympathy in support.
How do you prioritise when multiple customers need help at once?

Full Customer Support prep AI mock interview

General Full Stack Developer interview prep

6 live roles at Citi

End-to-end web engineering — frontend, backend, databases and deployment — for startups and product teams that want one engineer to own a feature.

Typical Full Stack Developer interview rounds

1 Frontend round. JavaScript, React and UI fundamentals.
2 Backend round. API design, databases and server-side logic.
3 Full-stack machine coding. Build a small end-to-end feature (form → API → DB).
4 System design & deployment. Architecture, hosting, CI/CD and trade-offs.

Commonly-asked Full Stack Developer questions

Walk me through what happens from a user clicking a button to data being saved in the database.
How do you handle authentication and sessions in a full-stack app (JWT vs cookies)?
Explain CORS and how you fix a CORS error.
How do you structure a REST API for a CRUD application?
What is the difference between client-side and server-side rendering?
How do you prevent SQL injection and XSS in your app?
Explain state management on the frontend — when do you reach for a library?
How would you optimise a slow-loading web page end to end?

Full Full Stack Developer prep AI mock interview

General Backend Developer interview prep

3 live roles at Citi

APIs, databases, concurrency and system design — the server-side engineering interview across product companies and fintech.

Typical Backend Developer interview rounds

1 DSA round. Coding problems plus complexity analysis.
2 Language & runtime. Deep dive on your primary language (Java/Node/Python/Go) and its concurrency model.
3 Database & API design. Schema design, indexing, transactions and REST/gRPC API design.
4 System design. Designing scalable, fault-tolerant backend services.

Commonly-asked Backend Developer questions

Explain the difference between SQL and NoSQL, and when you'd choose each.
What is database indexing and how does it speed up queries?
Explain ACID properties in a database transaction.
What is the difference between REST and GraphQL?
How do you handle concurrency and race conditions in your backend?
What is a deadlock and how do you prevent it?
Explain caching strategies — write-through, write-back and cache invalidation.
What is the difference between horizontal and vertical scaling?

Full Backend Developer prep AI mock interview

General Java Developer interview prep

3 live roles at Citi

Core Java, OOP, collections, multithreading and Spring Boot — the Java interview that dominates services companies and enterprise backends in India.

Typical Java Developer interview rounds

1 Core Java round. OOP, collections, exceptions and the JVM.
2 Multithreading & memory. Threads, synchronisation, garbage collection.
3 Spring / framework round. Spring Boot, dependency injection, REST and JPA.
4 Coding + design. DSA in Java plus basic low-level design.

Commonly-asked Java Developer questions

What is the difference between an abstract class and an interface in Java?
Explain the four pillars of OOP with Java examples.
What is the difference between ArrayList and LinkedList?
Explain how HashMap works internally in Java.
What is the difference between == and .equals() in Java?
What is the difference between String, StringBuilder and StringBuffer?
Explain the Java memory model and how garbage collection works.
What is the difference between checked and unchecked exceptions?

Full Java Developer prep AI mock interview

Rehearse your Citi interview, free

Run a realistic AI mock interview for your target role and get instant feedback on your answers — or take a timed mock test to check your fundamentals before the real thing.

AI mock interview Free mock test Citi jobs

Interview prep at other companies

Citi interview — FAQs

How do I prepare for a Citi interview?

Prepare by role: identify the role you're applying for, then practise the standard interview rounds and most-asked questions for that role type. Citi is currently hiring for Software Engineer, Data Analyst and Customer Support roles, so focus there. Use OnJob's free AI mock interview to rehearse with instant feedback, and review the role-specific question lists below. These are general role-based questions, not leaked Citi questions.

What questions are asked in a Citi interview?

We don't publish leaked or company-specific Citi questions. What we do provide is the general, frequently-asked interview questions for the role types Citi hires for — such as Software Engineer, Data Analyst and Customer Support roles. For example, Software Engineer interviews commonly cover: Reverse a linked list, both iteratively and recursively. Find the two numbers in an array that add up to a target sum. Detect whether a linked list has a cycle. Prepare with these general questions and OnJob's free AI mock interview.

How many rounds does a Citi interview have?

It depends on the role. A typical Software Engineer interview runs across 4 rounds — Online assessment, DSA / problem solving, System design, Hiring manager / culture fit. Round counts vary by company and seniority; treat this as the general structure to prepare for, not a guarantee of Citi's exact process.

Is Citi hiring right now?

Yes — Citi has 218+ live openings on OnJob.io, refreshed daily, mostly for Software Engineer, Data Analyst and Customer Support roles. Browse the live Citi jobs and see your AI match score on each before you apply.

Free forever — no credit card

Get matched to Citi roles you're ready for

Create a free profile to see your AI match score on every live Citi opening, practise the interview, and apply in one click.

Create my free profile Browse Citi jobs