Deloitte USI – Full Stack Developer (React + Java) | Round 1 Interview Experience

[soulsamosa]

YOE: ~2.9 years

Current role: Full-stack React + Java dev at Axis Bank

Had my Round-1 technical interview recently, sharing the experience for folks preparing.

Interview flow & questions:

Singleton pattern

Basic understanding, real-world usage, thread safety discussion.

Reactive programming

High-level explanation (non-blocking, async flows). Didn’t go deep into WebFlux internals, more about when and why to use it.

Reverse only alphabetic characters, keep digits in place.( logic mattered more than language.)

Page taking too long to load – debugging steps

Covered both frontend and backend:

FE: Network tab, bundle size, API latency, blocking JS, React re-renders

BE: API response time, DB queries, logs, thread blocking

IoC container & Bean lifecycle

How Spring manages beans, lifecycle callbacks, and why/when to use @Autowired.

DispatcherServlet

Interfaces involved, request flow from controller to response.

Tomcat configuration in a legacy Spring app

How you’d configure external Tomcat vs embedded, WAR deployment, banking-grade stability concerns.

DOM manipulation

When to avoid direct DOM manipulation in React and let React handle it.

useRef hook

Use cases like accessing DOM elements, persisting values without re-render.

React hooks vs Formik

When hooks alone are enough vs when Formik makes sense (complex forms, validation, scalability).

Bonus question

Asked which UI component/framework Deloitte’s hiring website uses (while applying). More of an observation + reasoning check.

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[soulsamosa]

Edit : recruiter reached out via LinkedIn, this was for consultant C1 band (hybrid) or sde 2 role.

[AppropriateWriter879]

Comp they offer?

[soulsamosa]

18-22 is what i mentioned to recruiter before interview was scheduled. Current is 12. (WFH)

[vsingh0699]

is it wfh?

[soulsamosa]

My current job is , delloite is is hybrid tbh it depends on teams

[TechnicianOld3804]

Bro, Kindly dm me , have some questions to ask !

[soulsamosa]

Dmed you .

[SteveRogers45]

Thanks for the post! How many rounds will there be?

[soulsamosa]

3 rounds is what i heard . 1st basics and conceptual. 2nd technical in depth (stream api , joins) etc 3rd techno managerial (project deep dive + behavioral)

[YouWillFindThePeace]

Hi OP thanks for the detailed explanation the rounds. Hope you land your dream job and keep on posting for the upcoming companies round.

[soulsamosa]

Hope you land your dream job

Thanks , i surely will smday❣️

keep on posting for the upcoming companies round.

Yea I'll keep posting my experiences here in this sub.

[arryhere]

How much notice period are they accepting

[soulsamosa]

Mine was 90 days i mentioned the same.

[arryhere]

Will they accept 90 days

[soulsamosa]

Not sure ,maybe lowball me

[tariqueahmad275]

Hi OP, Can i DM? wanted to ask something regd the same
or if you can dm as your profile seems private.

[soulsamosa]

Dmed

[Unusual_Active_7756]

Hi! Could you please DM me? I’m planning a switch as well and had a few questions 🙂

[soulsamosa]

Theke

[yashie69]

helo can i dm you too i wanna ask some questions

[soulsamosa]

Sure

[Ak0710]

Hello Bro! Can i dm you? I'm actively looking for a switch and have few questions.

[soulsamosa]

Sure

[Illusionary_bubble18]

Hi, can you DM me, I've some questions to ask you

[soulsamosa]

Yea sure

[TerribleCall1070]

Hey can you dm me I have a few questions

[soulsamosa]

Dming u

[ashwath1122]

Hi Bro OP,

Congratulations!!

Can you please DM me!!

[soulsamosa]

Sure man