Nokia software engineer candidates report an online coding test, resume-driven manager rounds, and technical interviews on C++, Java, OOP, data structures, networking and Linux. Here is how to prepare.
$129K
Avg. Base Comp
$150K
Avg. Total Comp
3-5 rounds
Typical Rounds
Not reported
Process Length
Candidates describe Nokia's software engineer interviews as fundamentals-first and heavily tied to the resume. Several report a resume walk-through in which interviewers ask about projects, internships and the tools listed. One candidate who received an offer said the conversation centered on Docker and ETL work from their CV, with no coding asked. Another said managers checked whether they could back up every skill they claimed.
The technical content varies by team. Reports mention C++ and C topics (shared pointers, pointer memory, memory management, multithreading), OOP, and Java topics (JVM, bytecode, abstract classes versus interfaces). Others describe bit manipulation, stack and heap, SQL, and Linux items such as cron jobs and pipes. Networking shows up in several accounts, including the OSI model, TCP/IP, and one telecom-oriented set on EPC, MME, SGW, handover and QoS in LTE.
Coding questions in the reports are mostly easy to moderate: removing duplicates from an array, tree depth, balanced parentheses, string reversal with recursion, and finding the second-largest number. Practice reading and debugging code aloud. Candidates also describe online assessments combining multiple-choice theory with coding. One reports a proctored test where hidden edge cases caused failures.
Senior-level accounts differ. One Java lead candidate describes DSA, Java/Spring Boot, microservices, design, managerial and HR rounds. Another reports a system design question about ingesting cell-tower data with anomaly detection. These are single accounts, so treat them as signals for senior roles rather than a standard loop.
Outcomes are mixed, with both offers and rejections among the reports. Preparing to explain your projects clearly and to show solid fundamentals looks like the best use of your time.
Synthesized from 62 candidate reports by our editorial team.
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Real interview reports from people who went through the Nokia process.
The online assessment was the entire process for me, and it was more of a fundamentals check than I expected. It had 30 multiple choice questions worth 4 points each, split into three blocks of ten, plus 2 coding questions worth 50 points each, with 10 test cases per problem. That puts the total at 220.
The first block was time and space complexity based on pseudocode. The snippets covered things like array traversals with swaps and graph traversals such as BFS and DFS. You need to read a short piece of code and call its complexity quickly, because there is little time to second-guess yourself.
The second block was operating systems, focused on scheduling algorithms, wait times, and CPU burst times. The third block was data structures, mostly trees, tree traversals, and vectors. The two coding problems were both easy, but they still had to pass every test case to earn the full points.
The thing that surprised me most was what was missing. The invitation email listed networking, Linux/Unix, and SQL/DBMS as topics, but none of them showed up. I had prepared for those, so I spent time on the wrong areas. I did not get an offer, and I don't know exactly which section cost me the most points.
Prep tip from this candidate
Drill complexity analysis on pseudocode, especially array swaps and BFS/DFS, and practice wait time and burst time calculations for scheduling. Don't spend much time on SQL or networking, since the assessment skipped them entirely even though the invitation listed them.
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Sourced from candidate reports and verified by our team.
Topics based on recent interview experiences.
Featured question at Nokia
Given an integer N, write a function that returns all of the prime numbers up to N
| Question | |
|---|---|
| The Brackets Problem | |
| Append Frequency | |
| Groups of Anagrams | |
| Find Duplicate Numbers in a List | |
| Swapping Nodes | |
| Hurdles In Data Projects | |
| Success Measurement | |
| Swap Variables | |
| Check Matching Parentheses | |
| Cloud-Agnostic Deployments | |
| String Palindromes | |
| Impossibly Iterative Fibonacci | |
| Your Strengths and Weaknesses | |
| Singly Linked List | |
| 2nd Highest Salary | |
| Merge Sorted Lists | |
| Over-Budget Projects | |
| Bagging vs Boosting | |
| Cyclic Detection | |
| Sort Strings | |
| Size of Joins | |
| CNNs vs Intensity-Based Features | |
| Get Top N Frequent Words | |
| Longest Increasing Subsequence | |
| Closed Accounts | |
| Skyscanner Partner ETL | |
| Precision and Recall | |
| Valid Anagram | |
| Target Indices |
Synthesized from candidate reports. Individual experiences may vary.
Candidates report an online test after applying, in formats such as HackerRank or AMCAT. It typically mixes multiple-choice questions on theory (OS, networks, Linux, programming) with two or three coding problems. Reported tasks include removing duplicates from an array, finding a GCD and finding missing numbers. One candidate describes hidden test cases catching edge cases.
Several candidates report a short HR or recruiter call, often about background, motivation and scheduling. One candidate describes a 10-minute line manager call that included no technical questions. Others describe a casual manager conversation about projects. Expect to explain why you want Nokia and this role, though the exact format may vary by team.
Candidates report technical rounds on DSA, OOP, C/C++ or Java, and sometimes SQL, Linux, operating systems and networking. Some describe reading a code snippet, explaining it and suggesting optimizations. Others report paper-based questions on pointers and deadlocks. Coding difficulty is generally described as easy to moderate, with the depth varying by team and seniority.
Many candidates report detailed questions on projects, internships and listed technologies, sometimes with a panel that includes line managers and a senior developer. Interviewers may probe what you personally did, why you chose certain tools, and whether you can support claimed skills. Prepare concise, honest explanations for every line of your resume.
Candidates report a final managerial or HR conversation covering strengths and weaknesses, motivation, role expectations and sometimes salary or notice period. Some senior candidates also describe a separate system design round, for example a dashboard for cell-tower data. These steps may not apply to every level or team.
