Deloitte's assessment process varies by business area, grade, and role. Deloitte's careers guidance says applicants may receive digital assessments, including automated Codility coding tests. Screens for software engineering or technology consulting roles may combine coding, SQL, computer science questions, and aptitude tests.

Use the invitation to confirm your exact assessment format. A campus analyst assessment and a software consultant screen may both carry the Deloitte name while testing different skill sets.

When to Expect the OA for Your Role

In early-career technology hiring, assessments are often used after application and before interviews. For example, one recent software engineering candidate described coding challenges and technical multiple-choice questions. One candidate for an SDE role at HashedIn by Deloitte described a 90-minute assessment with 3 coding questions before the technical interviews.

Assessments for professional applicants can follow an initial review, and the results may be sent to the hiring manager. Senior and specialist roles may instead begin with recruiter, technical, case, or project conversations.

Does Your Online Assessment Matter?

The OA helps determine who advances. Deloitte does not publish a global scoring threshold. Official information indicates that assessment feedback may go directly to the hiring manager, who decides whether to offer an interview. Results from coding platforms are only one input to the hiring decision.

Complete as much as you can without sacrificing code quality. Because the cutoff is not documented, focus on correct syntax, reasonable complexity, and tested edge cases.

Compiled List of Deloitte OA Question Types

These problems cover strings, arrays, prefix sums, stacks, matrices, linked lists, grouping, and SQL.

1. Longest Substring Without Repeating Characters - string tracking with a sliding window.
2. Maximum Subarray - Kadane-style dynamic programming.
3. Running Sum of 1d Array — Construct prefix sum.
4. Valid Parentheses - validation using stack
5. Search a 2D Matrix - search in a sorted matrix.
6. Rotate Image — Rotate the image in place.
7. Group Anagrams - canonical string keys and hashing.
8. Reverse Linked List - Pointer updates and invariants
9. Linked List Cycle - two-pointer approach for cycle detection.
10. Combine Two Tables — SQL joins and handling of missing rows.

Deloitte Interview Questions

Recently asked in real interviews

These questions were asked recently in real Deloitte interviews. Practice these and 4,000+ other questions from 1,000+ companies on Lodely.

Create an application for the DMV

system-design Easy

Explain the key differences between BETWEEN and HAVING clauses in SQL.

conceptsql Medium

Tell me about a time you failed.

behavioral Medium

Explore All Questions

Free to get started

How to Prepare and Pass the Deloitte Online Assessment

Plan 10 full study sessions: 4 for arrays and strings, 2 for matrices and linked lists, 2 for SQL and core computer science, and 2 for timed mock assessments. If you're invited to Codility or HackerRank, use its practice environment so the input and testing workflows feel familiar during the assessment.

Limit the time you spend on the initial read. Define the constraints, choose the most straightforward implementation, and test empty inputs, duplicates, and boundary cases. Review one Deloitte-specific prompt each day on Lodely to practice behavioral, system design, and coding questions.

Deloitte Interview Question Breakdown

Longest Substring Without Repeating Characters

Type: Sliding window. Prompt: Find the longest contiguous segment whose elements remain distinct. The Trick: A duplicate may require moving the left boundary past its prior position. What It Tests: Index tracking and linear-time reasoning.

Maximum Subarray

Type: Dynamic optimization. Prompt: Find the contiguous range with the strongest aggregate value. The Trick: Decide when to discard the prior range. What It Tests: State compression and edge cases.

What Comes After the Online Assessment

Depending on the role, the next step is likely an interview. One candidate who interviewed for SDE last year described technical interviews covering data structures, SQL, language fundamentals, and decisions made in projects. One SDE candidate described technical interviews and a "fitment" interview. For the project walkthrough, briefly explain what you built, how you completed it, why you chose the architecture, which tradeoffs you made, and how you could measure the project's success.

Conclusion

Match your preparation to the invitation, then practice arrays, strings, SQL, and edge-case testing under time pressure. Use Lodely to include Deloitte-specific questions in the same study plan.