As a Software Engineer at Epiroc, you will play a pivotal role in the development and enhancement of innovative solutions that drive the company's mission of sustainable productivity. This position is essential for ensuring that Epiroc's products not only meet but exceed user expectations in a competitive market. You will be involved in creating software solutions that integrate with advanced mining and construction equipment, helping to optimize performance and efficiency for users around the globe. The impact of your work as a Software Engineer extends beyond code; it influences the overall product experience, user satisfaction, and operational efficiency of our cutting-edge machinery. You will collaborate with cross-functional teams to design, implement, and maintain complex software systems that contribute to Epiroc's strategic goals. This role offers the opportunity to engage with state-of-the-art technology and work on projects that address real-world challenges faced by industries dependent on our machinery and solutions. Candidates can expect a dynamic and engaging work environment where your skills in software development will be challenged, and your contributions will be recognized. Working at means being part of a team that values innovation, collaboration, and a commitment to excellence in delivering impactful solutions. Epiroc
Phone Screening
reportedInitial phone call to assess candidate's background and fit for the role.
What to demonstrate
- Initial phone call to assess candidate's background and fit for the role
- Depth in Behavioral Interviewing
How to prepare
- Be able to walk your CV end to end in two minutes, and say why this company specifically.
- Have your salary expectations, notice period and location constraints ready, and ask for the rest of the loop in writing.
Technical Interviews
reportedInterviews with team members or managers focusing on technical skills.
What to demonstrate
- Interviews with team members or managers focusing on technical skills
- Depth in Behavioral Interviewing
How to prepare
- Answer aloud and timed: Can you explain a complex technical problem you solved and the approach you took?
- Answer aloud and timed: How do you ensure code quality and maintainability in your projects?
Coding Test
reportedAssessment through a coding test or take-home assignment to evaluate coding abilities.
What to demonstrate
- Assessment through a coding test or take-home assignment to evaluate coding abilities
- Depth in Behavioral Interviewing
How to prepare
- Answer aloud and timed: Discuss a time when you had to learn a new technology quickly. How did you approach it?
- Answer aloud and timed: Tell us about a time you faced a significant challenge in a project. How did you handle it?
Behavioral Interview
reportedInterview to assess candidate's fit within the team and company culture.
What to demonstrate
- Interview to assess candidate's fit within the team and company culture
- Depth in Behavioral Interviewing
How to prepare
- Prepare three examples from your own work, each with a decision you made and an outcome you can quantify.
- Re-read the description of the behavioral interview above and write down what you would ask to confirm before it.
PracHub editorial advice for the preparation topics above.
Research Epiroc's projects
Familiarize yourself with the company's products and recent innovations. This knowledge will help you tailor your responses during interviews.
Practice coding problems
Use online coding platforms to sharpen your programming skills before the technical interview.
Prepare situational examples
Have specific stories ready that illustrate your problem-solving abilities and teamwork experiences.
Align with company values
Understand how your personal values align with those of Epiroc, and be ready to discuss this in your interviews.
Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.
Write a function to reverse a string.
Write a function to reverse a string.
Approach
- Restate the input: its shape, its size, and what is guaranteed about it.
- Name the brute-force solution and its complexity before improving on it.
- Choose the data structure from the access pattern, not from familiarity.
- State the target complexity and say which constraint rules the naive version out.
Follow-up
- How does this change if the input no longer fits in memory?
- What is the worst case, and how likely is it on real data?
Given a list of integers, how would you find the two numbers that add up to a specific target?
Given a list of integers, how would you find the two numbers that add up to a specific target?
Approach
- Restate the input: its shape, its size, and what is guaranteed about it.
- Name the brute-force solution and its complexity before improving on it.
- Choose the data structure from the access pattern, not from familiarity.
- State the target complexity and say which constraint rules the naive version out.
Follow-up
- How does this change if the input no longer fits in memory?
- What is the worst case, and how likely is it on real data?
Explain the difference between a stack and a queue. When would you use each?
Explain the difference between a stack and a queue. When would you use each?
Approach
- Restate the input: its shape, its size, and what is guaranteed about it.
- Name the brute-force solution and its complexity before improving on it.
- Choose the data structure from the access pattern, not from familiarity.
- State the target complexity and say which constraint rules the naive version out.
Follow-up
- How does this change if the input no longer fits in memory?
- What is the worst case, and how likely is it on real data?
Can you implement a binary search algorithm?
Can you implement a binary search algorithm?
Approach
- Restate the input: its shape, its size, and what is guaranteed about it.
- Name the brute-force solution and its complexity before improving on it.
- Choose the data structure from the access pattern, not from familiarity.
- State the target complexity and say which constraint rules the naive version out.
Follow-up
- How does this change if the input no longer fits in memory?
- What is the worst case, and how likely is it on real data?
Stop tag and share joins from fanning out a page
resource_tag is (resource_id, tag_id) with PK (resource_id, tag_id); resource_share is (resource_id, shared_with_user_id, permission). The tagged-and-shared listing inner-joins resource to both, filters tenant_id, tag_id = ANY($2) and shared_with_user_id = $3, orders by updated_at DESC and takes 50. Pages come back with fewer than 50 distinct resources and the total in the header is far too high. Explain the row multiplication, rewrite both the page query and the count query so each is correct, and name the index each one needs. PostgreSQL 16.
Approach
- Do the arithmetic against the predicates that are actually there. An inner join emits one row per matching child row, and both joins are filtered: tag_id = ANY($2) admits only the requested tags, shared_with_user_id = $3 admits one user's share rows. So a resource holding three of the requested tags and shared with $3 once yields three rows, not one — the multiplier is its count of matching tags times its share rows for that single user, and that second factor is 1 unless the table admits duplicate (resource_id, shared_with_user_id) pairs. LIMIT 50 then limits rows rather than resources, and COUNT(*) counts pairs — the header is the product, not the population.
- Reject DISTINCT as the fix. It deduplicates after the product has been built, so the planner must materialise and sort the fanned-out set before the LIMIT can apply, and it leaves any SUM or AVG in the same select list wrong.
- Rewrite both filters as semi-joins, keeping resource as the only row source: AND EXISTS (SELECT 1 FROM resource_tag rt WHERE rt.resource_id = r.resource_id AND rt.tag_id = ANY($2)) and the same shape against resource_share. A semi-join stops at the first match per resource and preserves the driving index order, so ORDER BY updated_at DESC, resource_id DESC LIMIT 50 still stops after 50 rows.
- Count with the same predicates and no join at all: SELECT count(*) FROM resource r WHERE r.tenant_id = $1 AND r.status = 'active' AND EXISTS (...) AND EXISTS (...). Nothing multiplies a resource, so the number is the population.
Follow-up
- The filter changes from 'any of these tags' to 'all of these tags'. Rewrite it and state what it costs relative to the ANY form.
- A resource can be shared with the same user twice under different permissions. Does your count change, and should it?
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?
What programming languages are you most proficient in, and why?
What programming languages are you most proficient in, and why?
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
Can you explain a complex technical problem you solved and the approach you took?
Can you explain a complex technical problem you solved and the approach you took?
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
How do you ensure code quality and maintainability in your projects?
How do you ensure code quality and maintainability in your projects?
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
How would you approach designing a software solution for a new product feature?
How would you approach designing a software solution for a new product feature?
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
If you were given a project with tight deadlines and limited resources, how would you ensure its success?
If you were given a project with tight deadlines and limited resources, how would you ensure its success?
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
Present a scenario where you have to debug a major issue in a software system. What steps would you take?
Present a scenario where you have to debug a major issue in a software system. What steps would you take?
Approach
- Establish what changed and when, before forming any theory.
- Pick a bisection that eliminates candidates whichever way it turns out.
- Check the instrumentation before believing the symptom.
- Separate the trigger from the cause; the deploy is rarely the bug.
Follow-up
- What would you look at first, and what would it rule out?
- How would you tell a cause from a coincidence here?
Built from the rounds and topics Epiroc candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Epiroc loop
- Write out the reported sequence: Phone Screening, Technical Interviews, Coding Test, Behavioral Interview.
- For each round, write one sentence on what it is judging, from the description above, and mark the one you are least ready for.
Deliverable: A one-page map of the 4 reported rounds, with the weakest marked.
02Work Behavioral Interviewing
- Spend the session on Behavioral Interviewing, which Epiroc candidates report being tested on.
- Write one worked example in Behavioral Interviewing and time yourself on it.
Deliverable: One timed worked example in Behavioral Interviewing.
03Work Technical Interview Rounds
- Spend the session on Technical Interview Rounds, which Epiroc candidates report being tested on.
- Write one worked example in Technical Interview Rounds and time yourself on it.
Deliverable: One timed worked example in Technical Interview Rounds.
04Work Communication & Presentation
- Spend the session on Communication & Presentation, which Epiroc candidates report being tested on.
- Write one worked example in Communication & Presentation and time yourself on it.
Deliverable: One timed worked example in Communication & Presentation.
05Answer out loud: Technical / Domain Questions
- Answer aloud, timed: Describe your experience with software development methodologies.
- Answer aloud, timed: What programming languages are you most proficient in, and why?
Deliverable: Spoken answers to 2 reported Technical / Domain Questions question(s), under time.
06Answer out loud: Behavioral / Leadership
- Answer aloud, timed: Tell us about a time you faced a significant challenge in a project. How did you handle it?
- Answer aloud, timed: Describe a situation where you had to work with a difficult team member. What was your approach?
Deliverable: Spoken answers to 2 reported Behavioral / Leadership question(s), under time.
07Answer out loud: Problem-Solving / Case Studies
- Answer aloud, timed: Present a scenario where you have to debug a major issue in a software system. What steps would you take?
- Answer aloud, timed: How would you approach designing a software solution for a new product feature?
Deliverable: Spoken answers to 2 reported Problem-Solving / Case Studies question(s), under time.
Expand any day for tasks and deliverables. Your progress is saved on this device.
Behavioural rounds judge the decision you made and what it cost.
Describe your experience with software development methodologies.
Describe your experience with software development methodologies.
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Discuss a time when you had to learn a new technology quickly. How did you approach it?
Discuss a time when you had to learn a new technology quickly. How did you approach it?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Tell us about a time you faced a significant challenge in a project. How did you handle it?
Tell us about a time you faced a significant challenge in a project. How did you handle it?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Describe a situation where you had to work with a difficult team member. What was your approach?
Describe a situation where you had to work with a difficult team member. What was your approach?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
How do you prioritize tasks when working on multiple projects?
How do you prioritize tasks when working on multiple projects?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
What motivates you to excel in your work?
What motivates you to excel in your work?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Can you describe a time when you took the initiative to improve a process or system?
Can you describe a time when you took the initiative to improve a process or system?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Discuss a time when you had to adapt your solution based on user feedback.
Discuss a time when you had to adapt your solution based on user feedback.
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
- 01
Describe your experience with software development methodologies.
- 02
Discuss a time when you had to learn a new technology quickly. How did you approach it?
- 03
Tell us about a time you faced a significant challenge in a project. How did you handle it?
- 04
Describe a situation where you had to work with a difficult team member. What was your approach?
What is the typical difficulty level of the interviews?
Most candidates report that the interviews are of average difficulty, with a mix of technical and behavioral questions. Adequate preparation focused on both domains is essential.
Epiroc Software Engineer candidate reports ↗How much preparation time is recommended?
Candidates typically spend 2-4 weeks preparing for interviews, focusing on technical skills, behavioral responses, and company culture.
Epiroc Software Engineer candidate reports ↗What differentiates successful candidates?
Successful candidates often demonstrate a combination of strong technical skills, effective communication, and a clear understanding of Epiroc's values and mission.
Epiroc Software Engineer candidate reports ↗What is the company culture like at Epiroc?
Epiroc fosters a collaborative and innovative culture, valuing teamwork, continuous learning, and a commitment to sustainability.
Epiroc Software Engineer candidate reports ↗What is the typical timeline from initial screening to offer?
The timeline can vary, but candidates can generally expect the process to take 2-4 weeks from the initial interview to a job offer.
Epiroc Software Engineer candidate reports ↗What topics does Epiroc test in interviews?
Epiroc interviews most often cover Stakeholder Management, Value Selling, Project Management (General), Marketing Analytics, and Behavioral Interviewing. The exact emphasis depends on the specific role you apply for.
Epiroc 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.
- 01Epiroc 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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