Telstra Communications Interview Experience
Question Details
Telstra Communications visited my campus for the role of IT Developer in India. Complete Hiring process was divided into two rounds online and F2F interview round.Online R...
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Telstra Communications visited my campus for the role of IT Developer in India. Complete Hiring process was divided into two rounds online and F2F interview round.
Online Round Online round was conducted on hackerrank.com, consisted of two sections and was of two hours. Each section contained four questions each i.e. total of eight questions. In each section we had to solve at least two questions. In the first section's questions were of easy-medium level and were purely implementation based. Second section's questions were of medium level. Questions were focused on data structures and dynamic programming. Suggested Readings: Knapsack problem, Graphs (DFS, BFS), Disjoint Set, Implementation, Permutations and Combinations Out of 250 students who had given the exam only 10 were selected for the
next round of interview. You have to solve as many question as you can. I have solved six questions completely and two questions partially.
Technical Round Technical round was conducted on Hangout and lasted for around 50 minutes. The interviewer, the HR and a third person all joined on the hangout for the next technical round. They were mainly discussing about the projects you have done. They were looking for the confidence in the candidate. Be specific to the task you have done in your project and after giving the overview of the project explain only your part. Then they ask me if I know Java and have any previous experience using Java in my projects. I told him about my courses related to Java (Object Oriented Methodology and Software Engineering). Out of all the 10 students only three students were selected for the job and I am one of them.
About This Question
This is a reported interview question from a telstra interview for a swe role during the oa round reported in 2017.
It covers the following topics: Oop, Dynamic Programming, Graph, Graphs, Union Find .
Difficulty rating: Easy
Topics
More Telstra Interview Questions
About Telstra Interview Reports
This question was reported by a candidate who interviewed at Telstra. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.
Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Telstra are the higher-signal extractions to take from this report.
For broader preparation context, the Telstra interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.
How To Practice This Type of Question
Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.
Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Telstra reports consistently are the ones worth investing in; one-off niche problems are not.
During Your Telstra Round
Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.
The single most predictive failure mode in Telstra reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.