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Solventum Software Engineer Interview Guide

Solventum Software Engineer interview guide: reported rounds, questions and how candidates describe the process.

The 60-second brief

A Software Engineer at Solventum plays a pivotal role in shaping the future of healthcare technology. Following its spin-off as an independent company, Solventum has focused intensely on delivering groundbreaking solutions in health information systems, medical devices, and purification technologies. In this role, you are not just writing code; you are building secure, high-performance, and compliant software that directly impacts clinical workflows, patient outcomes, and global healthcare infrastructure. The work is highly collaborative and intellectually challenging. You will design, develop, and maintain software systems that scale to handle massive datasets while maintaining the rigorous quality and safety standards required in the healthcare sector.

This guide is scoped to a Software Engineer candidate at Solventum.

Focus areas

  • Data Structures & Algorithms (DSA)
  • Problem Solving
  • Behavioral Interviewing

The Solventum interview process

Solventum candidates report 5 rounds over 4-6 weeks. The stages below are what candidates describe, not a published process.

HR Phone Screen

Discuss your background, career goals, and interest in the company.

What to demonstrate

  • Discuss your background, career goals, and interest in the company
  • Depth in Data Structures & Algorithms (DSA)

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 Assessment

Complete an online assessment focusing on Java or general coding skills.

What to demonstrate

  • Complete an online assessment focusing on Java or general coding skills
  • Depth in Data Structures & Algorithms (DSA)

How to prepare

  • Answer aloud and timed: Explain the difference between an interface and an abstract class in Java, and provide a scenario where you would choose one over the other.
  • Answer aloud and timed: Implement a function to check if a binary tree is balanced.

Presentation Task

Present a technical topic to a panel.

What to demonstrate

  • Present a technical topic to a panel
  • Depth in Data Structures & Algorithms (DSA)

How to prepare

  • Answer aloud and timed: How do you handle memory management and avoid memory leaks in your code?
  • Answer aloud and timed: Walk us through how you would approach a complex debugging or fault-analysis task when a production system fails.

Technical Interviews

Engage in interviews focused on fault analysis, coding, and system design.

What to demonstrate

  • Engage in interviews focused on fault analysis, coding, and system design
  • Depth in Data Structures & Algorithms (DSA)

How to prepare

  • Answer aloud and timed: Present a technical project you worked on recently, explaining your architectural choices, the challenges you faced, and how you resolved them.
  • Answer aloud and timed: How would you design a system to process real-time telemetry data from a medical device securely?

Behavioral Interviews

Participate in interviews with hiring managers and leadership.

What to demonstrate

  • Participate in interviews with hiring managers and leadership
  • Depth in Data Structures & Algorithms (DSA)

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 interviews above and write down what you would ask to confirm before it.

Where candidates lose points

Understand the Healthcare Domain

Show an interest in healthcare technology. Knowing how software quality directly impacts patient care will resonate strongly with your interviewers.

Master the STAR Method

Frame your behavioral answers clearly. Focus on your specific actions and the quantifiable results of your work.

Explain Your Thought Process

During coding and debugging rounds, talk through your logic out loud. Interviewers value your problem-solving methodology just as much as the final code.

Prepare Questions for the Team

Show your curiosity by asking about their current technical stack, how they handle technical debt, and how the team has adapted post-spin-off.

Questions & practice

Given an array of integers, find the two numbers that add up to a specific target.

Medium · Coding and Algorithm Fundamentals

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. 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?

How would you reverse a linked list, and what is the time complexity of your approach?

Medium · Coding and Algorithm Fundamentals

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. 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 an interface and an abstract class in Java, and provide a scenario where you wo

Medium · Coding and Algorithm Fundamentals

Explain the difference between an interface and an abstract class in Java, and provide a scenario where you would choose one over the other.

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. 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?

Implement a function to check if a binary tree is balanced.

Medium · Coding and Algorithm Fundamentals

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. 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?

How do you handle memory management and avoid memory leaks in your code?

Medium · Coding and Algorithm Fundamentals

Approach

  1. Say what the runtime actually does before reasoning about the code.
  2. Name what is shared across threads and what owns each piece of state.
  3. Identify the window where an invariant is briefly untrue.
  4. Distinguish a value from a reference to it, and say which one you handed out.

Follow-up

  • What happens if two callers reach this at the same time?
  • Where could this allocate more than you expect?

Write the update path that detects a concurrent edit

Medium · optimistic concurrency · transactional outbox · audit history

resource carries version INT NOT NULL DEFAULT 1. resource_revision holds revision_id, resource_id, version, actor_user_id, change_kind, patch JSONB, request_id, created_at with UNIQUE (resource_id, version). outbox_event holds aggregate_type, aggregate_id, aggregate_version, event_type, payload, status. A PUT carries the version the client read. Write the exact statements for the single transaction that applies the edit, records the revision and enqueues 'resource.updated', and give the handler's branch on zero affected rows. Then say what PostgreSQL 16 does under READ COMMITTED when two of these updates hit one row at once.

Approach

  1. One transaction, three writes, no network call inside it: UPDATE resource SET title = $3, version = version + 1, updated_at = now() WHERE resource_id = $1 AND tenant_id = $4 AND version = $2; then INSERT the resource_revision row at version $2 + 1; then INSERT the outbox_event row at the same aggregate_version. The event goes to a table rather than a broker because no transaction spans both.
  2. Branch on the affected-row count before doing anything else. Zero has three causes — stale version, wrong tenant, row gone — so re-read once and map to 409 carrying the current version, or 404 for an id outside the caller's tenant, which also stops the endpoint confirming that another tenant's id exists.
  3. State the engine behaviour instead of assuming it. Under READ COMMITTED the second UPDATE blocks on the row lock, and when the first commits PostgreSQL re-evaluates the WHERE clause against the newly committed row, so the version predicate now fails and the statement reports zero rows. Under REPEATABLE READ the identical collision raises SQLSTATE 40001 instead, so the handler must fold both shapes into one conflict response.
  4. Keep UNIQUE (resource_id, version) even though the predicate already serialises writers. It is what makes a lost update unwritable if any other path ever reaches the revision table, and it converts a logic bug into 23505 rather than into a silently missing history row.

Follow-up

  • A client sends the version it read ten minutes ago and the resource has moved three versions. What is in your 409 so it can resolve the conflict without a full re-fetch?
  • Two editors, two disjoint fields, no overlap. Does your answer still refuse the second write, and should it?

Hold a per-tenant active cap against concurrent creates

Hard · write skew · isolation levels · constraints

A tenant on the standard plan may hold at most 50 resources with status='active'. The create handler runs SELECT count(*) FROM resource WHERE tenant_id = $1 AND status = 'active', compares to 50, then inserts. Two creates arrive 3 ms apart on different instances and the tenant lands at 51. Name the anomaly, say whether PostgreSQL 16 READ COMMITTED or REPEATABLE READ prevents it and why, then give an implementation that holds the cap at READ COMMITTED with the exact statements. Finally, say what changes when the cap is 'at most one running export per tenant' on job_run.

Approach

  1. Name it: write skew. The two transactions read an overlapping set and write disjoint rows, so there is no row-level conflict for the engine to detect and each commit is individually legal.
  2. Rule out the levels precisely. READ COMMITTED takes a fresh snapshot per statement and takes no lock on the counted rows, so both see 49. PostgreSQL's REPEATABLE READ is snapshot isolation: it removes non-repeatable reads and phantoms within the snapshot but still admits write skew, because the anomaly is not a re-read of a changed row, it is a read of a set that a concurrent transaction invalidates. Only SERIALIZABLE closes it, by tracking the read dependency and aborting one transaction with SQLSTATE 40001 — a guarantee that exists only if the application re-runs the whole transaction from the read.
  3. Convert the set predicate into a single-row conflict: keep tenant.active_resource_count and run UPDATE tenant SET active_resource_count = active_resource_count + 1 WHERE tenant_id = $1 AND active_resource_count < 50 in the same transaction as the INSERT. Zero affected rows is the cap, returned as 409. The row lock serialises the decision at any isolation level, and contention is bounded to one tenant's row — which is also the fair-scheduling unit, unlike a global counter that would convoy every tenant behind one row.
  4. State the cost you just took on: a counter is a second source of truth that can drift, so every path that changes status must adjust it inside the same transaction, and a periodic reconciliation has to exist, with resource_revision as the authority for what the count should have been.

Follow-up

  • A resource moves from archived back to active. Which statements change, and what breaks if the counter update and the status change land in different transactions?
  • The cap becomes plan-dependent and a plan can change mid-month. Where does the number 50 live, and who reads it?

Present a technical project you worked on recently, explaining your architectural choices, the challenges you

Medium · Technical Scenario and Debugging

Present a technical project you worked on recently, explaining your architectural choices, the challenges you faced, and how you resolved them.

Approach

  1. Fix the scope first: who calls this, how often, and what they do when it fails.
  2. Name the read and write paths separately; they rarely have the same bottleneck.
  3. Choose a partition key and say what query it makes expensive.
  4. State the consistency you need, and where you are willing to be stale.

Follow-up

  • What breaks first when traffic grows ten times?
  • How does this behave when that dependency is down for an hour?

How would you design a system to process real-time telemetry data from a medical device securely?

Medium · Technical Scenario and Debugging

Approach

  1. Fix the scope first: who calls this, how often, and what they do when it fails.
  2. Name the read and write paths separately; they rarely have the same bottleneck.
  3. Choose a partition key and say what query it makes expensive.
  4. State the consistency you need, and where you are willing to be stale.

Follow-up

  • What breaks first when traffic grows ten times?
  • How does this behave when that dependency is down for an hour?

Walk us through how you would approach a complex debugging or fault-analysis task when a production system fai

Medium · Technical Scenario and Debugging

Walk us through how you would approach a complex debugging or fault-analysis task when a production system fails.

Approach

  1. Establish what changed and when, before forming any theory.
  2. Pick a bisection that eliminates candidates whichever way it turns out.
  3. Check the instrumentation before believing the symptom.
  4. 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?

What strategies do you use to ensure your code is thoroughly tested and meets strict quality engineering stand

Medium · Technical Scenario and Debugging

What strategies do you use to ensure your code is thoroughly tested and meets strict quality engineering standards?

Approach

  1. Establish what changed and when, before forming any theory.
  2. Pick a bisection that eliminates candidates whichever way it turns out.
  3. Check the instrumentation before believing the symptom.
  4. 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?

Suggested practice checklist

Built from the rounds and topics Solventum candidates report.

Day 1 — Map the Solventum loop

  • Write out the reported sequence: HR Phone Screen, Technical Assessment, Presentation Task, Technical Interviews, Behavioral Interviews.
  • 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 5 reported rounds, with the weakest marked.

Day 2 — Work Data Structures & Algorithms (DSA)

  • Spend the session on Data Structures & Algorithms (DSA), which Solventum candidates report being tested on.
  • Write one worked example in Data Structures & Algorithms (DSA) and time yourself on it.

Deliverable: One timed worked example in Data Structures & Algorithms (DSA).

Day 3 — Work Problem Solving

  • Spend the session on Problem Solving, which Solventum candidates report being tested on.
  • Write one worked example in Problem Solving and time yourself on it.

Deliverable: One timed worked example in Problem Solving.

Day 4 — Work Behavioral Interviewing

  • Spend the session on Behavioral Interviewing, which Solventum 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.

Day 5 — Answer out loud: Coding and Algorithm Fundamentals

  • Answer aloud, timed: Given an array of integers, find the two numbers that add up to a specific target.
  • Answer aloud, timed: How would you reverse a linked list, and what is the time complexity of your approach?

Deliverable: Spoken answers to 2 reported Coding and Algorithm Fundamentals question(s), under time.

Day 6 — Answer out loud: Technical Scenario and Debugging

  • Answer aloud, timed: Walk us through how you would approach a complex debugging or fault-analysis task when a production system fails.
  • Answer aloud, timed: Present a technical project you worked on recently, explaining your architectural choices, the challenges you faced, and how you resolved them.

Deliverable: Spoken answers to 2 reported Technical Scenario and Debugging question(s), under time.

Day 7 — Answer out loud: Behavioral and Situational (STAR Format)

  • Answer aloud, timed: Describe a time when you had to work with a difficult stakeholder or team member. How did you resolve the conflict?
  • Answer aloud, timed: Tell me about a time when you had to make a critical technical decision with limited information or under a tight deadline.

Deliverable: Spoken answers to 2 reported Behavioral and Situational (STAR Format) question(s), under time.

Behavioural preparation

Behavioural rounds judge the decision you made and what it cost.

Describe a time when you had to work with a difficult stakeholder or team member. How did you resolve the conf

Medium · Behavioral and Situational (STAR Format)

Describe a time when you had to work with a difficult stakeholder or team member. How did you resolve the conflict?

Approach

  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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 me about a time when you had to make a critical technical decision with limited information or under a ti

Medium · Behavioral and Situational (STAR Format)

Tell me about a time when you had to make a critical technical decision with limited information or under a tight deadline.

Approach

  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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?

Give an example of a project that failed or did not meet expectations. What did you learn, and what would you

Medium · Behavioral and Situational (STAR Format)

Give an example of a project that failed or did not meet expectations. What did you learn, and what would you do differently?

Approach

  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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 manage your time and prioritize tasks when working on multiple high-priority deliverables?

Medium · Behavioral and Situational (STAR Format)

Approach

  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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?