The reported questions come in four groups. The coding questions are classic data-structure exercises: the longest substring without repeating characters, a stack implemented on an array, and how to approach a sorting problem. Two problem-solving cases are engineering-flavoured (designing real-time data processing and speeding up a slow application), and one is product-flavoured (choosing features on a limited budget). A set of engineering-practice questions asks how you write software day to day: your languages, the development lifecycle, code quality and debugging. Five behavioral questions cover pressure, conflict, initiative, prioritisation and team values.
Because the coding questions are well known, a correct answer is not enough. Prepare to handle the edge cases without being asked, such as the repeated character that sits before the window in the substring problem, underflow and resizing in the stack, and stability and memory limits in sorting. Write each one in the language you plan to use, which can be one of the languages the listed requirements name as examples (Java, Python, JavaScript), and say the time and space complexity before you are asked for it.
For the engineering-practice questions, answer with concrete habits from your own work rather than textbook definitions. When you explain the development lifecycle, code quality or debugging, describe what you actually do: how your pull requests are reviewed, what your CI pipeline blocks on, how you bisect a regression, and which tests you write first. Habits like these also show in a code sample, which candidates list as a topic. Choose a sample you can defend line by line, with tests and a README that explains the decisions.
For the behavioral round, have one story ready for each reported prompt, told in the first person and ending with a result you can check. The requirements candidates describe stress Agile delivery and working with product and design partners, so stories set in a sprint, a code review or a cross-functional handoff give you relevant material.
Initial Screening
reportedCandidates report an Initial Screening to assess fit for the role. Candidates also list a code sample requirement and recruiter communication about how the technical hiring process works among the topics for this role, but which stage those belong to is not reported. Treat the screening as a conversation about fit and logistics. Show clearly how your experience maps to the listed requirements (languages such as Java, Python or JavaScript, Agile delivery, data structures and algorithms), and use any recruiter contact to learn what the technical stages involve and whether a code sample is expected.
What to demonstrate
- Fit between your background and the role, which is the stated purpose of the stage
- How clearly you explain your experience against the listed requirements: languages such as Java, Python or JavaScript, Agile, data structures and algorithms
- Whether you can describe your recent projects and your own part in them
How to prepare
- Write a short walkthrough of your last two roles that names the language, the framework, the size of the team and one result you can measure for each.
- Choose a code sample now in case one is requested: a small repository in your strongest language, with unit tests and a README that explains the design choices and trade-offs.
- Prepare a short answer on which language you know best and why, with one concrete project behind it, drawing on the languages the requirements name as examples.
- Write down the questions you will ask the recruiter: how many technical interviews there are, whether they involve live coding, and how a code sample is used.
Technical Interviews
reportedCandidates report Technical Interviews that test programming skill and technical knowledge. The format, the number of interviews and the order of topics are not reported, so prepare for each kind of work the reported questions cover. A coding stage is where the coding questions are practised: code that runs, with complexity stated. A design stage is where the design and performance cases are practised: an outline-level design you can talk through. Work through the engineering-practice answers as well, grounded in your own projects, since they draw on the same technical knowledge.
What to demonstrate
- Programming skill, which is the stated purpose of the round
- Technical knowledge of the languages and tools in the listed requirements, such as Git and testing
- Working code with sound complexity if the round includes a live coding stage
How to prepare
- Write the sliding-window substring solution and the array-backed stack from scratch in your interview language, then test them on empty input, a single element and the input string "abba".
- Make a one-page comparison of sorting algorithms covering stability, extra memory, worst case and behaviour on nearly sorted input, plus what your language's built-in sort uses.
- Outline the real-time processing design on paper (ingestion log, stream processor, state, sinks, monitoring) and a measure-first plan for a slow application, naming the profiler you would use in your stack.
- Write one specific example each for code quality, debugging and a hard technical problem, with the tools named (Git, CI, test framework, linter).
Behavioral Assessments
reportedCandidates report Behavioral Assessments about past experience and how you fit with team dynamics and company culture. The reported behavioral questions ask about working under pressure, handling conflict within a team, taking initiative, prioritising across several deadlines, and the values that matter in a team. A cross-functional collaboration question also appears among the examples candidates cite. Have one prepared story for each question, told in the first person, with the decision you made and the outcome.
What to demonstrate
- Concrete past behaviour under pressure, in conflict and with competing deadlines
- How you work with teammates and cross-functional partners
- Ownership: initiative you took and what it changed
How to prepare
- Write a STAR outline for each of the five reported behavioral questions, each one ending with a result you can measure or check.
- Prepare one story about working with product managers or designers in an Agile sprint, since the responsibilities candidates describe include working with product managers and designers.
- For the team-values question, pick two values and attach a real incident to each instead of listing adjectives.
- Tell each story out loud and cut any setup that does not lead to your own decision.
PracHub editorial advice for the preparation topics above.
Writing the substring sliding window so the left pointer can move backwards, which returns the wrong answer on inputs like "abba".
Always set left = max(left, last_seen[c] + 1), and before you say you are done, trace "abba", the empty string and a string of one repeated character out loud.
Giving an array stack with no underflow handling, no resize policy and no complexity statement.
Say from the start what pop does on an empty stack and what push does when the array is full. Give the doubling and quarter-shrink policy with its amortised O(1) cost, and in Java, null out the popped slot.
Answering the real-time data processing question with a list of tools and no requirements.
Ask about rate, latency target, ordering, duplicate tolerance and late data before naming Kafka or Flink. Then tie each component to a requirement: partition key to ordering, watermarks to late data, idempotent writes to at-least-once delivery.
Reaching for a cache or a bigger server on the slow-application question before anything has been measured.
Lead with defining the slow operation and its percentile, then profiling, then the layer-by-layer check (queries and indexes, network, algorithm, front end). Re-measure after each fix.
Behavioral answers told in the plural throughout, or a team-values answer that is only a list of adjectives.
Rewrite each story so that the decision, the trade-off and the result are clearly yours, using "I" for what you did. Give every value you name a real incident from your own work.
Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.
Can you write a function to find the longest substring without repeating characters?
Can you write a function to find the longest substring without repeating characters?
Approach
- Brute force checks every substring for uniqueness, which is O(n^3), or O(n^2) with a set. Name it, then improve it.
- Use a sliding window: keep a hash map from each character to the index where it was last seen, and a left boundary. For each right index, if the character was last seen at or after left, move left to that index + 1.
- Use left = max(left, last[c] + 1) so the window never moves backwards. The string "abba" breaks versions that skip the max.
- Update the best length as right - left + 1 after each step. Time is O(n); space is O(min(n, alphabet size)), and a fixed-size array works when the input is ASCII.
- Edge cases: an empty string returns 0, all identical characters return 1, all distinct characters return n, and spaces and punctuation count as characters.
Follow-up
- Return the substring itself, not just its length.
- Find the longest substring with at most k distinct characters.
- How would this work on a stream where you cannot hold the whole string?
How would you implement a stack using an array?
How would you implement a stack using an array?
Approach
- Use a backing array plus a top index (or size). push writes to arr[size] and increments size; pop decrements size and returns arr[size]; peek reads arr[size - 1]; isEmpty checks size == 0. All of these are O(1).
- Handle the boundaries explicitly. Popping or peeking an empty stack throws an exception (or returns an optional) rather than an unspecified value; a fixed-capacity stack must reject a push when full.
- For a growable stack, double the capacity when full, which gives amortised O(1) push. Shrink to half only when the stack falls to a quarter full, so push and pop at the boundary do not cause repeated resizing.
- In Java, set the popped slot to null so the garbage collector can reclaim the object. Otherwise the array keeps a stale reference.
- Mention generics (Stack) and that the array version beats a linked list on cache locality and per-node overhead.
Follow-up
- Add getMin() in O(1).
- Implement two stacks in one array.
- How would you make it safe for concurrent use?
Explain how you would approach solving a sorting problem.
Explain how you would approach solving a sorting problem.
Approach
- Clarify the input first: size, element type, whether it fits in memory, whether it is nearly sorted, whether equal keys must keep their order (stability), and whether the key range is small.
- Default to the built-in sort and know what it is. Python's sorted uses Timsort (stable, O(n log n), fast on nearly sorted data). Java's Arrays.sort uses dual-pivot quicksort for primitives (not stable) and Timsort for objects (stable).
- Compare the classics. Quicksort: average O(n log n), worst O(n^2), in place, not stable. Merge sort: O(n log n) worst case, stable, O(n) extra memory. Heapsort: O(n log n) worst case, O(1) extra, not stable. Insertion sort: O(n^2) in general but fast on small or nearly sorted input.
- Beat O(n log n) only when the keys allow it. Counting sort is O(n + k) for integer keys in a range of size k. LSD radix sort is O(d * (n + b)) for d digits in base b, which is linear only when the key width d is bounded. For data larger than memory, use an external merge sort (sort chunks, then k-way merge with a heap).
- Ask whether a full sort is needed at all. Top-k needs only a heap (O(n log k)) or quickselect (average O(n)).
Follow-up
- How would you sort a 10 GB file with 1 GB of RAM?
- Why can no comparison sort beat O(n log n) in the worst case?
- How do you sort by two keys, and why does stability matter there?
Denormalise tenant onto revisions and backfill it live
resource_revision (revision_id, resource_id, version, actor_user_id, change_kind, patch, request_id, created_at) has 400M rows and no tenant column; tenant_id lives only on resource. Two reads need it: a tenant-scoped audit feed ordered by created_at DESC, and an offboarding purge. Both join back to resource today. Justify adding tenant_id to resource_revision against those two reads, name the anomaly the copy introduces and the constraint that prevents it, then give the ordered migration for a live table taking 1.2k writes/second — the lock each step takes, how the backfill is batched, and where each step stops being reversible. PostgreSQL 16.
Approach
- Justify from the access path rather than from taste. Without the column, the audit feed either scans resource_revision by created_at and discards other tenants' rows, or resolves the tenant's resource_ids first and probes with them — both proportional to the tenant's whole history rather than to one page. With (tenant_id, created_at DESC, revision_id DESC) it is a seek that stops at 50 rows, and the purge becomes a ranged delete instead of a join.
- Name the cost exactly: a second copy of a fact can disagree with the first. Make the disagreement unwritable rather than documented — add UNIQUE (resource_id, tenant_id) on resource so it can serve as a foreign-key target, then FOREIGN KEY (resource_id, tenant_id) REFERENCES resource (resource_id, tenant_id) on the revision table. A revision can then only ever carry its parent's tenant.
- Step one, expand: ALTER TABLE resource_revision ADD COLUMN tenant_id BIGINT NULL, with no default, so it is a catalogue change and no rewrite. It still needs ACCESS EXCLUSIVE for an instant, and that instant queues behind the longest open transaction on the table while every later query queues behind it — set lock_timeout to 2s and retry rather than wait.
- Step two, dual-write: deploy the writer that populates tenant_id on every new revision while reads still use the join. Reversible by redeploying the previous build, because nothing reads the column yet.
Follow-up
- The backfill is half finished and a rollback is required. What state is the table in, and what does the previous build do with a half-populated column?
- How do you verify the backfill actually finished, given rows are still being inserted while it runs?
Explain why the owner filter ignores the listing index
The only index on resource is (tenant_id, status, updated_at DESC, resource_id DESC). A new endpoint returns one user's resources across all statuses, newest created first: WHERE tenant_id = $1 AND owner_user_id = $2 ORDER BY created_at DESC LIMIT 20. On a tenant with 2M rows it takes 900 ms and EXPLAIN shows a sort above a large scan. Explain precisely why the existing index cannot serve it, give the index that can, and state which of these the new index still will not help: owner_user_id alone across tenants; the same query ordered by updated_at. PostgreSQL 16.
Approach
- Separate the two jobs an index does. For filtering, a composite btree is seekable only on a left prefix, so with no predicate on status the scan can at best range over tenant_id and test owner_user_id per row; PostgreSQL 16 has no btree skip scan to jump the unconstrained column.
- For ordering, the index is sorted by (status, updated_at) within a tenant and not by created_at, so the LIMIT cannot stop early: every matching row is read and then sorted. That is the 'Sort Method: top-N heapsort' line, and it is why the plan reads 2M rows to answer with 20.
- Derive the replacement from the access path — equality, equality, then the ordering column: CREATE INDEX CONCURRENTLY ON resource (tenant_id, owner_user_id, created_at DESC). The scan seeks to the (tenant, owner) range and walks 20 entries in order, so the Sort node disappears along with the row-read.
- Treat INCLUDE (title, status) as conditional, not free. An index-only scan still visits the heap for any row whose page is not marked all-visible, so on a table taking 1.2k writes/second the win depends on autovacuum keeping the visibility map current, and the wider index costs more on every insert.
Follow-up
- 90% of rows are status='active'. Would a partial index WHERE status = 'active' change your answer, and for which of the three queries?
- A dashboard runs this for 40 owners in one page load. What changes about the design?
What programming languages are you most comfortable with, and why?
What programming languages are you most comfortable with, and why?
Approach
- Name one primary language and one secondary from the languages the requirements name as examples (Java, Python, JavaScript), and say how long you have used each and on what kind of system.
- Give reasons tied to the language itself: Java's static typing, JVM tooling and java.util.concurrent; Python's readability, standard library and fast iteration; JavaScript's async model on the event loop and the shared front-end and Node ecosystem.
- Back the claim with one project: what you built, the libraries you used, and a problem the language made easier or harder.
- Be honest about depth. Say where you would need to ramp up, and how you learned your last new language quickly.
Follow-up
- What do you dislike about your main language, and how do you work around it?
- How does Python manage memory, or how does garbage collection work on the JVM?
- If the team used a language you know less well, how would you get productive?
Can you explain the software development lifecycle?
Can you explain the software development lifecycle?
Approach
- List the phases in order: requirements, design, implementation, testing, deployment, maintenance. Give each phase one concrete output, such as a spec, a design note, a merged PR, a test suite, a release or an incident fix.
- Contrast waterfall (sequential, changes are expensive late) with iterative Agile delivery (short sprints that repeat every phase), and say when each fits. Regulated or fixed-scope work suits waterfall; evolving products suit Agile.
- Map the lifecycle onto your own team's practice: sprint planning, PR review, CI running tests on every commit, staged deployment, monitoring, and retrospectives feeding the next sprint.
- Stress that testing and feedback run throughout the cycle rather than coming at the end, and give one example where catching a defect earlier saved time.
Follow-up
- Where does testing sit in an Agile sprint, and who owns it?
- How do you handle a requirement that changes in the middle of a sprint?
- What does a good definition of done look like on your team?
How do you ensure code quality and maintainability?
How do you ensure code quality and maintainability?
Approach
- Describe layered defences: unit tests on logic, integration tests on boundaries such as the database and APIs, and a few end-to-end checks. Treat coverage as a signal, not a target.
- Name the automation: formatters and linters (Black or Ruff, ESLint, Checkstyle), static types (TypeScript, mypy, Java), and a CI pipeline that blocks merges on failing tests.
- Explain your review habits: small pull requests, a description that states intent and risk, and review comments about naming, single responsibility, error handling and missing tests.
- Cover maintainability over time: refactor under test coverage, record decisions in the README or ADRs, and remove dead code and stale feature flags.
- Give the trade-off. Under a deadline, say what you would relax (polish, broad refactors) and what you would not (tests on the changed path, review).
Follow-up
- How do you approach writing unit tests for a function with external dependencies?
- Tell me about a time you refactored a large codebase. How did you keep it safe?
- What is the most common issue you flag in code review?
Describe a challenging technical problem you faced and how you resolved it.
Describe a challenging technical problem you faced and how you resolved it.
Approach
- Pick a problem with real uncertainty where you drove the investigation, such as a memory leak, a race condition, a data migration or a hard performance target. Avoid stories where someone else found the answer.
- Structure it as situation, then the constraint that made it hard, then the hypotheses you tested in order and the evidence that ruled each in or out.
- State the fix and the measurable result, for example "p95 dropped from X to Y" using your own numbers, or "zero data loss across N records".
- Close with what you changed so it would not recur: a regression test, an alert, a runbook or a design rule.
- Speak in the first person and keep the technical detail precise enough that a listener could follow the reasoning.
Follow-up
- What alternatives did you consider and reject, and why?
- How did you confirm your fix caused the improvement?
- What would you do differently if you met the same problem today?
How would you design a system for real-time data processing?
How would you design a system for real-time data processing?
Approach
- Clarify first: event volume and peak rate, the latency target from event to result, whether ordering matters, whether duplicates are acceptable, and how late an event can arrive.
- Ingestion: producers write to a durable, partitioned log (Kafka, Kinesis or Azure Event Hubs). Choose a partition key such as user or device ID so related events stay ordered, and name the hot-key risk.
- Processing: a stream processor (Flink, Spark Structured Streaming or Kafka Streams) with windowed aggregation on event time. Watermarks handle late data, and checkpointed state lets it recover after a crash.
- Delivery semantics: at-least-once processing with idempotent writes (upsert by event ID) is usually simpler than end-to-end exactly-once. Explain the trade-off.
- Sinks and operations: a low-latency store for serving results (Redis, Cassandra, DynamoDB), raw events in object storage for replay and batch, and monitoring of consumer lag, throughput and dead-letter counts. Add backpressure handling when consumers fall behind.
Follow-up
- How do you handle events that arrive after their window has closed?
- A consumer crashes in the middle of a window. What happens to its state?
- One key gets most of the traffic. How do you rebalance it?
If given a limited budget, how would you prioritize features for a new product?
If given a limited budget, how would you prioritize features for a new product?
Approach
- Start with the user and the single problem the product must solve, and define the metric that tells you it works, such as activation or task completion.
- List candidate features and score each on value and cost. Use RICE (reach, impact, confidence, effort) or MoSCoW, and count maintenance and infrastructure cost as well as build cost.
- Cut down to a minimum viable scope that tests the riskiest assumption first. Prefer building on managed services or existing components to stretch the budget.
- Sequence the rest behind the launch metric, and say what result would make you change the plan.
- As an engineer, add technical judgement: which features share foundations, and which ones create costly-to-reverse decisions such as data models or third-party contracts.
Follow-up
- A senior stakeholder insists on a feature you scored low. What do you do?
- The budget is cut in half after launch. What goes first?
- How would you estimate engineering effort for a feature nobody has built before?
Describe how you would approach optimizing a slow-running application.
Describe how you would approach optimizing a slow-running application.
Approach
- Define "slow": which operation, for which users, at which percentile (p50 or p95), and the target. Then reproduce and measure before changing anything.
- Profile to find where the time goes. Use APM traces across services, a CPU profiler (cProfile, async-profiler, Chrome DevTools) and query logs, rather than guessing.
- Check the usual layers in order. Database: N+1 queries, missing indexes (read the EXPLAIN plan), over-fetching. Network: chatty calls, large payloads. Code: algorithmic complexity, blocking I/O. Front end: bundle size, rendering.
- Fix the largest contributor first and re-measure on the same benchmark. Add caching only with a stated invalidation strategy and staleness tolerance.
- Lock in the gain with a performance test or an alert on the latency metric so the regression does not quietly return.
Follow-up
- It is only slow under load. How does your approach change?
- How would you optimise an existing algorithm to improve performance?
- What are the risks of the cache you just added?
What is your approach to debugging a complex issue?
What is your approach to debugging a complex issue?
Approach
- Start by reproducing the issue reliably and defining the symptom precisely: which input, which environment, since when. Without a reproduction you cannot confirm a fix.
- Gather evidence before theorising: stack traces, logs with request IDs, metrics around the time it started, and recent deploys or config changes.
- Narrow the search space by bisecting. Use git bisect across commits, halve the input, toggle feature flags, or compare a working environment with a failing one.
- Test one hypothesis at a time with a change that would disprove it. For intermittent failures, suspect concurrency, timeouts, caching and environment differences.
- Fix the root cause rather than the symptom, add a regression test that fails without the fix, and record what instrumentation was missing.
Follow-up
- How would you troubleshoot an issue that only happens in production and cannot be reproduced locally?
- How do you decide between rolling back and fixing forward?
- Tell me about a bug where your first hypothesis was wrong.
Each day targets one reported round or one group of reported questions, ending with a full rehearsal.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Background walkthrough, code sample and language answer
- Write a short walkthrough of your last two roles that names the language, team size and one result you can measure for each.
- Choose and clean up a code sample in your strongest language: add unit tests, a README covering design choices, and remove dead code.
- Write your answer on which languages you know best and why, with one project to back it, and say it aloud.
Deliverable: A written background walkthrough, a code sample repository with tests and a README, and a spoken answer on languages.
Practice prompt ↗02Coding: sliding window and array stack
- Write the longest-substring-without-repeating-characters solution from a blank file and run it on "", "bbbb", "abcabcbb" and "abba".
- Implement a generic array-backed stack with push, pop, peek and isEmpty, underflow handling and doubling resize, and write unit tests for each method.
- Extend the stack with an O(1) getMin as follow-up practice.
Deliverable: Two tested solutions in your interview language, plus a min-stack extension, with complexity written at the top of each file.
Practice prompt ↗Practice prompt ↗03Sorting: algorithms and when to use each
- Build a table of quicksort, merge sort, heapsort, insertion sort, counting sort and radix sort covering time, extra memory, stability and nearly sorted behaviour.
- Look up what your language's built-in sort uses (Timsort, dual-pivot quicksort) and note whether it is stable.
- Write merge sort and a heap-based top-k, then talk through the external merge sort for a file larger than memory.
Deliverable: A one-page sorting comparison table, two working implementations, and spoken notes on the external-sort follow-up.
Practice prompt ↗04Problem-solving cases: real-time processing and a slow application
- Sketch the real-time data processing design: clarifying questions, ingestion log and partition key, stream processor with watermarks, state and checkpoints, sinks, and lag monitoring.
- Write a measure-first plan for the slow application, naming the profiler and query tooling in your stack.
- Work the practice question on why the owner filter ignores the listing index to rehearse reading a query plan.
Deliverable: A one-page design diagram with stated trade-offs, a written optimisation checklist, and a worked query-plan explanation.
Practice prompt ↗Practice prompt ↗Practice prompt ↗05Engineering practice: lifecycle, quality, debugging
- Write how the development lifecycle maps onto your current team's sprint, review, CI and release process.
- List the code quality tools and habits you actually use (tests, linters, types, review rules) with one example of a defect each one caught.
- Prepare a debugging walkthrough and a hard-technical-problem story, each with hypotheses, evidence and a measured result.
Deliverable: Four written answers grounded in your own tooling and incidents, each said aloud once.
Practice prompt ↗Practice prompt ↗Practice prompt ↗Practice prompt ↗06Behavioral stories
- Write a STAR outline for pressure, conflict, initiative and prioritising across deadlines, each ending with a result you can check.
- Write your team-values answer as two values, each tied to a real incident.
- Prepare one cross-functional story involving product managers or designers in a sprint, then rehearse all six aloud and replace each plural pronoun that hides your own decision.
Deliverable: Six STAR outlines and a recording of yourself telling each story.
Practice prompt ↗Practice prompt ↗Practice prompt ↗Practice prompt ↗Practice prompt ↗07Product case and full rehearsal
- Work the limited-budget feature prioritisation case with RICE scoring and a minimum viable scope, and say which result would change your plan.
- Run a mock loop: open with your background walkthrough, re-solve the longest-substring problem from a blank file, talk through the real-time data processing design, then tell the team-conflict story and the initiative story.
- Note every answer where you stalled and re-practise those answers only.
Deliverable: A scored feature list for the budget case, a mock-loop recording covering the substring problem, the real-time design and the conflict and initiative stories, and a short list of re-practised weak answers.
Practice prompt ↗Practice prompt ↗Practice prompt ↗Practice prompt ↗Practice prompt ↗Expand any day for tasks and deliverables. Your progress is saved on this device.
Candidates report a Behavioral Assessments round about past experience and fit with team dynamics. The reported prompts cover pressure, conflict, initiative, competing deadlines and team values. Prepare first-person stories from software work, such as sprints, code reviews, incidents and handoffs with product or design, and end each one with a result you can check.
Can you describe a situation where you had to work under pressure?
Can you describe a situation where you had to work under pressure?
Approach
- Choose a real deadline or incident where the pressure had a cause you can name, such as a client launch date or a production outage, and where you made the key calls.
- Show triage. Explain what you cut or deferred, what you refused to cut (tests on the critical path, review), and why.
- Show communication: who you told about the risk and when, and how you set expectations instead of going silent.
- End with the outcome and what you changed afterwards so the same crunch would not repeat. Avoid a hero story built on overnight work with no lesson.
Follow-up
- What did you defer, and what happened to it later?
- At what point would you have escalated, and to whom?
- How did you keep quality from slipping?
How do you handle conflicts within a team?
How do you handle conflicts within a team?
Approach
- Tell one specific conflict, such as a technical disagreement over a design or a dispute over scope with a product partner, not a general statement that you communicate well.
- Show that you restated the other person's position fairly and found the real disagreement, whether goals, constraints or information.
- Explain how you resolved it with evidence or agreed criteria: a quick prototype, a benchmark, a written comparison, or a decision owner both sides accepted.
- Give the result and the state of the working relationship afterwards. A story where you were simply right and the other person gave in is weaker than one where the outcome improved on both starting positions.
Follow-up
- Tell me about a disagreement where you turned out to be wrong.
- What do you do when the conflict cannot be settled between the two of you?
- How do you disagree with someone more senior?
Describe a time when you took the initiative on a project.
Describe a time when you took the initiative on a project.
Approach
- Pick a gap nobody owned that you noticed and fixed, for example flaky tests, a manual deployment step, missing monitoring or an undocumented service.
- Explain how you scoped it, made the case to your lead or team with a cost (hours lost, incidents), and fitted it around committed sprint work.
- Describe what you built or changed and how you brought others along: documentation, a demo, handing it over.
- Quantify the effect, such as build time, incident count or onboarding time. Initiative that ignored team priorities works against you, so show the agreement you obtained.
Follow-up
- How did you get buy-in?
- What would you have done if your manager had said no?
- What did you stop doing to make room for it?
How do you prioritize your tasks when faced with multiple deadlines?
How do you prioritize your tasks when faced with multiple deadlines?
Approach
- Describe your method: rank by impact and urgency, check dependencies first (who is blocked on me), then estimate effort.
- Make the trade-off visible. List the commitments, show the conflict to the stakeholders or the team in sprint planning, and agree what moves.
- Renegotiate early. Flag at-risk deadlines as soon as you see them, with a proposal for scope or timing, not at the last moment.
- Ground it in one real week where two deadlines collided, and say what you shipped, what slipped and how people reacted.
Follow-up
- What do you do when two stakeholders both say their item is the top priority?
- How do you estimate a task you have not done before?
- Tell me about a deadline you missed. What happened?
What values do you think are important in a team environment?
What values do you think are important in a team environment?
Approach
- Pick two or three values and define each as a behaviour, for example candour in code review, shared ownership of production issues, or reliability on commitments.
- Attach a real example to each: a review comment that prevented a bug, an on-call handoff done well, a commitment you renegotiated early instead of missing it.
- Explain why each value matters for delivery, such as fewer defects, faster onboarding or trust across product and engineering.
- Avoid a list of adjectives with no evidence behind them, and avoid claiming to know the company's values unless you can cite where you learned them.
Follow-up
- Tell me about a time a teammate did not live up to one of those values. What did you do?
- How do you give critical feedback to a peer?
- How would you help build that value in a team that lacks it?
- 01
Can you describe a situation where you had to work under pressure?
- 02
How do you handle conflicts within a team?
- 03
Describe a time when you took the initiative on a project.
- 04
How do you prioritize your tasks when faced with multiple deadlines?
- 05
What values do you think are important in a team environment?
- 06
Describe a successful project where you collaborated with cross-functional teams.
How many rounds are there, and how long does the process take?
Candidates report three rounds: an Initial Screening, Technical Interviews and Behavioral Assessments, over roughly three to five weeks. Scheduling can stretch that. The number and format of the technical interviews are not reported, so ask your recruiter early in the process.
24 Seven Talent Software Engineer candidate reports ↗Will I need to submit a code sample?
A code sample requirement and preparing a code sample for the technical assessment are among the topics candidates report, though which stage they belong to is not reported. Have one ready in your strongest language: small enough to read quickly, with unit tests, a README explaining your design choices, and nothing you cannot explain line by line. Ask the recruiter whether they want a repository link or a specific exercise.
PracHub Software Engineer practice ↗Which programming language should I use?
The requirements candidates describe name Java, Python and JavaScript as examples of the languages expected. Use the one you write most fluently, and prepare the reported coding questions (longest substring without repeating characters, an array-backed stack, sorting) in it. Also know the details of its built-in sort and its standard collections.
PracHub Software Engineer practice ↗Is there system design in this loop?
The reported problem-solving questions include designing a system for real-time data processing and optimising a slow-running application. Prepare an outline-level design: clarify requirements, then cover ingestion, processing, state, storage and monitoring. Also prepare a measure-first approach to performance problems.
PracHub Software Engineer practice ↗Do I need cloud or front-end framework experience?
Candidates report AWS or Azure, React or Angular, and DevOps practices as nice-to-have skills rather than requirements. If you have used them, bring them into your design and project answers. If not, focus on the core requirements: strong skills in at least one language, Agile delivery, and data structures and algorithms.
PracHub Software Engineer practice ↗Are remote work options available?
The role details candidates describe mention remote and hybrid arrangements depending on the team. Confirm what applies to your specific opening with your recruiter.
24 Seven Talent Software Engineer candidate reports ↗Sources & methodology 3 sources ↗
No official company page is cited. Rounds and questions come from candidate reports and PracHub editorial material; each source shows the date it was read.
- 0124 Seven Talent Software Engineer candidate reports ↗
Company-reported rounds, questions and FAQ.
Candidate reports · Accessed 2026-09-22 - 02PracHub Software Engineer practice ↗
PracHub practice material, not company-reported.
PracHub page · Accessed 2026-09-22 - 03PracHub preparation framework ↗
PracHub preparation guidance.
PracHub page · Accessed 2026-09-22
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