As a Software Engineer at Otsuka, you will play a crucial role in driving innovation and delivering technology solutions that enhance the company's mission to improve the health and well-being of individuals worldwide. Your work will directly impact the development and optimization of software applications used in various domains, such as research and development, cloud systems, and operational efficiencies. This role is not only about coding; it involves collaborating with cross-functional teams to ensure that the software solutions align with business goals and user needs. You will engage in complex problem-solving, leveraging advanced technical skills to develop robust systems that support Otsuka's diverse product lines. This position offers a unique opportunity to contribute to significant projects that affect both internal operations and external health outcomes, making your work impactful and meaningful. Expect to work with cutting-edge technologies and methodologies, enhancing your skills while contributing to a company that values innovation and excellence.
Phone Screening
reportedInitial screening to assess candidate's background and fit for the role.
What to demonstrate
- Initial screening to assess candidate's background and fit for the role
- Depth in SAP BTP (Business Technology Platform)
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
reportedEvaluation of technical skills through coding challenges and problem-solving questions.
What to demonstrate
- Evaluation of technical skills through coding challenges and problem-solving questions
- Depth in SAP BTP (Business Technology Platform)
How to prepare
- Answer aloud and timed: What are the principles of object-oriented programming?
- Answer aloud and timed: Describe a time you found a bug in production. How did you handle it?
Onsite Interviews
reportedMultiple rounds of interviews with team members focusing on technical and behavioral aspects.
What to demonstrate
- Multiple rounds of interviews with team members focusing on technical and behavioral aspects
- Depth in SAP BTP (Business Technology Platform)
How to prepare
- Answer aloud and timed: How do you ensure code quality and maintainability?
- Answer aloud and timed: Design a URL shortening service. What considerations would you take into account?
PracHub editorial advice for the preparation topics above.
Showcase your passion
Demonstrating enthusiasm for technology and its application in healthcare will resonate well with interviewers.
Be prepared with examples
Use the STAR (Situation, Task, Action, Result) method to structure your responses, particularly for behavioral questions.
Research the company
Familiarize yourself with Otsuka’s mission, values, and recent projects to discuss how your experience aligns with their goals.
Practice coding challenges
Utilize platforms like LeetCode or HackerRank to sharpen your coding skills ahead of the technical interview.
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 linked list.
Write a function to reverse a linked list.
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?
How would you find the longest substring without repeating characters?
How would you find the longest substring without repeating characters?
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?
Implement a binary search algorithm.
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?
Discuss the time and space complexity of your solution.
Discuss the time and space complexity of your solution.
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?
Solve a problem using dynamic programming techniques.
Solve a problem using dynamic programming techniques.
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?
How would you optimize a SQL query for performance?
How would you optimize a SQL query for performance?
Approach
- Name the grain you start from and join outward from it.
- Check whether any join is one-to-many before aggregating, or the sums inflate.
- Say which index the query would use, and what makes it unusable.
- Handle the rows that do not match: that is usually the actual question.
Follow-up
- How does the query change if that join becomes one-to-many?
- What happens to this when the table is ten times larger?
Write the update path that detects a concurrent edit
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
- 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.
- 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.
- 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.
- 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?
Explain the difference between REST and SOAP.
Explain the difference between REST and SOAP.
Approach
- Say who the caller is and what they do when the call fails halfway.
- Define the identity of a request so a retry cannot double-apply it.
- Separate accepted, pending, failed and confirmed; they are different facts.
- Design the error taxonomy before the success shape; callers branch on it.
Follow-up
- What happens if the caller retries after a timeout?
- How does a client discover it is on an old version of this contract?
What are the principles of object-oriented programming?
What are the principles of object-oriented programming?
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?
How do you ensure code quality and maintainability?
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?
Design a URL shortening service. What considerations would you take into account?
Design a URL shortening service. What considerations would you take into account?
Approach
- Fix the scope first: who calls this, how often, and what they do when it fails.
- Name the read and write paths separately; they rarely have the same bottleneck.
- Choose a partition key and say what query it makes expensive.
- 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 architect a system for real-time data processing?
How would you architect a system for real-time data processing?
Approach
- Fix the scope first: who calls this, how often, and what they do when it fails.
- Name the read and write paths separately; they rarely have the same bottleneck.
- Choose a partition key and say what query it makes expensive.
- 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?
Discuss the trade-offs between microservices and a monolithic architecture.
Discuss the trade-offs between microservices and a monolithic architecture.
Approach
- Fix the scope first: who calls this, how often, and what they do when it fails.
- Name the read and write paths separately; they rarely have the same bottleneck.
- Choose a partition key and say what query it makes expensive.
- 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?
What tools or methodologies do you use for system design?
What tools or methodologies do you use for system design?
Approach
- Fix the scope first: who calls this, how often, and what they do when it fails.
- Name the read and write paths separately; they rarely have the same bottleneck.
- Choose a partition key and say what query it makes expensive.
- 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?
Given a dataset, how would you identify and mitigate outliers?
Given a dataset, how would you identify and mitigate outliers?
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?
Describe your thought process when tackling a new technology or framework.
Describe your thought process when tackling a new technology or framework.
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 solution for a hypothetical software implementation challenge.
Present a solution for a hypothetical software implementation challenge.
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 debugging a system that is experiencing intermittent failures?
How would you approach debugging a system that is experiencing intermittent failures?
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 Otsuka candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Otsuka loop
- Write out the reported sequence: Phone Screening, Technical Assessment, Onsite 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 3 reported rounds, with the weakest marked.
02Work SAP BTP (Business Technology Platform)
- Spend the session on SAP BTP (Business Technology Platform), which Otsuka candidates report being tested on.
- Write one worked example in SAP BTP (Business Technology Platform) and time yourself on it.
Deliverable: One timed worked example in SAP BTP (Business Technology Platform).
03Work CRM Platform Engineering
- Spend the session on CRM Platform Engineering, which Otsuka candidates report being tested on.
- Write one worked example in CRM Platform Engineering and time yourself on it.
Deliverable: One timed worked example in CRM Platform Engineering.
04Work Cloud System Operations (CloudOps)
- Spend the session on Cloud System Operations (CloudOps), which Otsuka candidates report being tested on.
- Write one worked example in Cloud System Operations (CloudOps) and time yourself on it.
Deliverable: One timed worked example in Cloud System Operations (CloudOps).
05Answer out loud: Technical / Domain Questions
- Answer aloud, timed: Explain the difference between REST and SOAP.
- Answer aloud, timed: How would you optimize a SQL query for performance?
Deliverable: Spoken answers to 2 reported Technical / Domain Questions question(s), under time.
06Answer out loud: System Design / Architecture
- Answer aloud, timed: Design a URL shortening service. What considerations would you take into account?
- Answer aloud, timed: How would you architect a system for real-time data processing?
Deliverable: Spoken answers to 2 reported System Design / Architecture question(s), under time.
07Answer out loud: Behavioral / Leadership
- Answer aloud, timed: Describe a challenging project you worked on. What was your role?
- Answer aloud, timed: How do you prioritize tasks when working on multiple projects?
Deliverable: Spoken answers to 2 reported Behavioral / Leadership 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 a time you found a bug in production. How did you handle it?
Describe a time you found a bug in production. 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?
How do you handle data consistency in distributed systems?
How do you handle data consistency in distributed systems?
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 challenging project you worked on. What was your role?
Describe a challenging project you worked on. What was your role?
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?
Can you provide an example of a conflict within a team? How did you resolve it?
Can you provide an example of a conflict within a team? How did you resolve 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?
What motivates you to perform at your best?
What motivates you to perform at your best?
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 time when you had to adapt to significant changes in a project.
Describe a time when you had to adapt to significant changes in a project.
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 handle situations where you don't have enough information to make a decision?
How do you handle situations where you don't have enough information to make a decision?
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 a time you found a bug in production. How did you handle it?
- 02
How do you handle data consistency in distributed systems?
- 03
Describe a challenging project you worked on. What was your role?
- 04
How do you prioritize tasks when working on multiple projects?
What is the typical interview difficulty for this role?
The interview process is rigorous but fair, focusing on both technical skills and cultural fit. Candidates generally find it challenging but manageable with thorough preparation.
Otsuka Software Engineer candidate reports ↗How long does the interview process take?
From the initial screening to the offer stage, the process usually takes about 4-6 weeks, depending on scheduling and team availability.
Otsuka Software Engineer candidate reports ↗What differentiates successful candidates at Otsuka?
Successful candidates demonstrate not only strong technical skills but also a clear alignment with Otsuka’s values, such as collaboration, integrity, and a commitment to improving health outcomes.
Otsuka Software Engineer candidate reports ↗What is the culture like at Otsuka?
The culture at Otsuka emphasizes teamwork, innovation, and a patient-centered approach. Employees are encouraged to voice their ideas and contribute to a collaborative environment.
Otsuka Software Engineer candidate reports ↗Are there opportunities for remote work?
Yes, Otsuka offers flexible work arrangements, including remote and hybrid options, depending on the role and team needs.
Otsuka Software Engineer candidate reports ↗What topics does Otsuka test in interviews?
Otsuka interviews most often cover Data Quality Management, Problem Solving, Machine Learning, Data Pipelines, and Quality Assurance (QA) Engineering. The exact emphasis depends on the specific role you apply for.
Otsuka 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.
- 01Otsuka 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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