As a Software Engineer at Children's Health, you play a pivotal role in designing and developing innovative software solutions that enhance the healthcare experience for children and their families. This position is critical not only for the technical infrastructure of the organization but also for ensuring that the applications you create are user-friendly and effective in meeting the needs of healthcare professionals and patients alike. By working closely with multidisciplinary teams, you will contribute to products that support various aspects of pediatric care, ultimately impacting the quality of life for young patients. The role involves navigating complex problem spaces unique to healthcare technology, such as electronic health records, patient management systems, and telehealth applications. You will be part of a dynamic team focused on improving patient outcomes through technology, which means you will encounter challenges that require innovative thinking and a deep understanding of both software engineering and healthcare practices. Candidates can expect to engage in projects that not only demand technical proficiency but also offer the opportunity to make a meaningful difference in the lives of children.
Initial Screening
reportedThe interview process begins with an initial screening by a recruiter.
What to demonstrate
- The interview process begins with an initial screening by a recruiter
- Depth in Supply Chain Management Domain
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 Interview
reportedCandidates undergo a technical interview with a hiring manager or team lead.
What to demonstrate
- Candidates undergo a technical interview with a hiring manager or team lead
- Depth in Supply Chain Management Domain
How to prepare
- Answer aloud and timed: Describe a challenging technical problem you faced and how you resolved it.
- Answer aloud and timed: How do you approach debugging a complex software issue?
PracHub editorial advice for the preparation topics above.
Align with the mission
Familiarize yourself with the mission of Children's Health and be prepared to articulate how your work contributes to improving pediatric care.
Practice coding questions
Use platforms like LeetCode or HackerRank to sharpen your coding skills and prepare for technical assessments.
Prepare examples
Have specific examples ready that demonstrate your problem-solving skills and ability to work in a team.
Ask insightful questions
Show your interest in the role and organization by asking thoughtful questions about team dynamics and project challenges.
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?
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 differences between depth-first and breadth-first search algorithms.
Explain the differences between depth-first and breadth-first search algorithms.
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?
What is your approach to writing clean and maintainable code?
What is your approach to writing clean and maintainable code?
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 database query for performance?
How would you optimize a database 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?
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 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?
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
- 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?
What are the key considerations when developing software for healthcare applications?
What are the key considerations when developing software for healthcare applications?
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 design a system to handle patient data securely?
How would you design a system to handle patient data securely?
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?
Describe the architecture of a software project you've worked on and the choices you made.
Describe the architecture of a software project you've worked on and the choices you made.
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 are the trade-offs between microservices and monolithic architectures?
What are the trade-offs between microservices and monolithic architectures?
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 approach integrating third-party APIs into a healthcare application?
How would you approach integrating third-party APIs into a healthcare application?
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?
Can you walk us through the process of designing a new feature from concept to implementation?
Can you walk us through the process of designing a new feature from concept to implementation?
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 prioritize feature requests from multiple stakeholders?
How would you prioritize feature requests from multiple stakeholders?
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?
Walk us through your approach to a real-world problem related to software development.
Walk us through your approach to a real-world problem related to software development.
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?
What metrics would you use to measure the success of a software product?
What metrics would you use to measure the success of a software product?
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 stay current with emerging technologies and trends in software engineering?
How do you stay current with emerging technologies and trends in software engineering?
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 a scenario where you had to make a critical decision under pressure.
Describe a scenario where you had to make a critical decision under pressure.
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 approach debugging a complex software issue?
How do you approach debugging a complex software issue?
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 Children's Health candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Children's Health loop
- Write out the reported sequence: Initial Screening, Technical 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 2 reported rounds, with the weakest marked.
02Work Supply Chain Management Domain
- Spend the session on Supply Chain Management Domain, which Children's Health candidates report being tested on.
- Write one worked example in Supply Chain Management Domain and time yourself on it.
Deliverable: One timed worked example in Supply Chain Management Domain.
03Work Infor Supply Chain Management (ERP/Supply Chain Platform)
- Spend the session on Infor Supply Chain Management (ERP/Supply Chain Platform), which Children's Health candidates report being tested on.
- Write one worked example in Infor Supply Chain Management (ERP/Supply Chain Platform) and time yourself on it.
Deliverable: One timed worked example in Infor Supply Chain Management (ERP/Supply Chain Platform).
04Work ERP Concepts (Enterprise Resource Planning)
- Spend the session on ERP Concepts (Enterprise Resource Planning), which Children's Health candidates report being tested on.
- Write one worked example in ERP Concepts (Enterprise Resource Planning) and time yourself on it.
Deliverable: One timed worked example in ERP Concepts (Enterprise Resource Planning).
05Answer out loud: Technical / Domain Questions
- Answer aloud, timed: What programming languages are you most proficient in, and why?
- Answer aloud, timed: Can you explain the software development lifecycle and your experience with it?
Deliverable: Spoken answers to 2 reported Technical / Domain Questions question(s), under time.
06Answer out loud: System Design / Architecture
- Answer aloud, timed: How would you design a system to handle patient data securely?
- Answer aloud, timed: Describe the architecture of a software project you've worked on and the choices you made.
Deliverable: Spoken answers to 2 reported System Design / Architecture question(s), under time.
07Answer out loud: Behavioral / Leadership
- Answer aloud, timed: Describe a time when you worked on a team project. What was your role?
- Answer aloud, timed: How do you handle conflicts within a team?
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.
Can you explain the software development lifecycle and your experience with it?
Can you explain the software development lifecycle and your experience with 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 time when you worked on a team project. What was your role?
Describe a time when you worked on a team project. 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 handle conflicts within a team?
How do you handle conflicts within a team?
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 share an instance where you advocated for a technical decision?
Can you share an instance where you advocated for a technical 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?
What motivates you in your work, and how do you motivate others?
What motivates you in your work, and how do you motivate others?
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 adapt to significant changes during a project.
Describe a situation where you had to adapt to significant changes during 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?
- 01
Can you explain the software development lifecycle and your experience with it?
- 02
Describe a time when you worked on a team project. What was your role?
- 03
How do you handle conflicts within a team?
- 04
Can you share an instance where you advocated for a technical decision?
How difficult is the interview process for a Software Engineer at Children's Health?
The interview process is rigorous and designed to assess both technical skills and cultural fit. Candidates should expect a combination of technical assessments, behavioral interviews, and case studies.
Children's Health Software Engineer candidate reports ↗What differentiates successful candidates in this interview process?
Successful candidates demonstrate strong technical expertise, effective communication skills, and an ability to collaborate with diverse teams. They also show a genuine interest in improving pediatric healthcare through technology.
Children's Health Software Engineer candidate reports ↗What is the culture and working style like at Children's Health?
The culture at Children's Health emphasizes collaboration, innovation, and a commitment to improving the lives of children. Engineers are encouraged to share ideas and contribute to a positive team environment.
Children's Health Software Engineer candidate reports ↗What is the typical timeline from initial screen to offer?
Candidates can expect the process to take 3-4 weeks, depending on scheduling and availability. Prompt communication throughout this period is encouraged.
Children's Health Software Engineer candidate reports ↗What are the remote work or hybrid expectations for this role?
While the specifics can vary, many roles at Children's Health offer flexibility in work arrangements, including remote and hybrid options. It is advisable to confirm expectations during the interview process.
Children's Health Software Engineer candidate reports ↗What topics does Children's Health test in interviews?
Children's Health interviews most often cover Stakeholder Management, Problem Solving, Recruiter Coordination, Quality Improvement (QI), and Financial Analysis. The exact emphasis depends on the specific role you apply for.
Children's Health 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.
- 01Children's Health 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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