As a Software Engineer at Lyra Health, you play a vital role in transforming mental health care through technology, empathy, and scale. This position sits at the intersection of complex software engineering and high-impact healthcare services, building systems that connect people with life-changing mental health care. Your contributions directly influence how patients access care, how providers manage their workflows, and how the business scales its clinical operations. The role demands a high degree of technical ownership, whether you are building resilient backend microservices, crafting intuitive full-stack applications, or integrating enterprise tools. You will work within cross-functional product and engineering teams, collaborating closely with product managers, designers, and clinical operations partners. The engineering problem space at Lyra Health involves balancing strict data privacy and security requirements with rapid, user-centric feature delivery. Expect an environment that values technical excellence, collaboration, and a genuine mission-driven culture. While the work is intellectually stimulating and technically challenging, the team places a strong emphasis on sustainable pacing and cross-functional support. You will find that your day-to-day work directly supports the company's broader mission to make mental health care accessible and effective for everyone.
Recruiter Screening
reportedInitial discussion about your background, motivations, and alignment with the role.
What to demonstrate
- Initial discussion about your background, motivations, and alignment with the role
- Depth in Full-Stack Engineering
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 Evaluations
reportedAssessment of coding capabilities, technical discussions, and behavioral alignment with engineering managers.
What to demonstrate
- Assessment of coding capabilities, technical discussions, and behavioral alignment with engineering managers
- Depth in Full-Stack Engineering
How to prepare
- Answer aloud and timed: How do you manage database migrations and schema updates in a zero-downtime deployment environment?
- Answer aloud and timed: Can you explain how you approach debugging a complex performance bottleneck in a distributed backend system?
Conversations with Leaders
reportedOpportunities to speak with various engineering leaders and team members about day-to-day life.
What to demonstrate
- Opportunities to speak with various engineering leaders and team members about day-to-day life
- Depth in Full-Stack Engineering
How to prepare
- Answer aloud and timed: How do you ensure high availability and fault tolerance in your service architecture?
- Answer aloud and timed: Write a function to parse and validate a complex JSON payload containing nested user preferences.
PracHub editorial advice for the preparation topics above.
Communicate your thought process
Interviewers at Lyra Health evaluate how you think just as much as your final answer. Talk through your assumptions, explore alternative approaches out loud, and invite feedback as you solve coding or design problems.
Connect with the mission
Ground your behavioral answers and your "Why Lyra?" response in a genuine appreciation for mental health care and patient impact. Showing that you care about the real-world utility of your software resonates strongly with engineering leaders.
Prepare structured behavioral examples
Use the STAR method (Situation, Task, Action, Result) to frame your stories about past projects, technical disagreements, and production incidents. Keep your examples concise and focus heavily on your specific contributions and learnings.
Ask thoughtful questions
Use the time at the end of your interviews to ask about engineering culture, deployment pipelines, and how teams balance feature delivery with technical debt. Thoughtful questions demonstrate your maturity and proactive engagement with the role.
Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.
Write a function to parse and validate a complex JSON payload containing nested user preferences.
Write a function to parse and validate a complex JSON payload containing nested user preferences.
Approach
- Say what the runtime actually does before reasoning about the code.
- Name what is shared across threads and what owns each piece of state.
- Identify the window where an invariant is briefly untrue.
- 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?
Given an array of log timestamps, implement an algorithm to find peak usage intervals within a specified windo
Given an array of log timestamps, implement an algorithm to find peak usage intervals within a specified window.
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 refactor a monolithic service method that has accumulated excessive technical debt and tight cou
How would you refactor a monolithic service method that has accumulated excessive technical debt and tight coupling?
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?
Why do you want to join Lyra Health, and what connects you to our mission of transforming mental health care?
Why do you want to join Lyra Health, and what connects you to our mission of transforming mental health care?
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?
Hold a per-tenant active cap against concurrent creates
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
- 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.
- 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.
- 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.
- 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?
What languages and frameworks do you have the most professional experience with, and how do you decide which t
What languages and frameworks do you have the most professional experience with, and how do you decide which tool is best for a given problem?
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 me through how you would design a secure API endpoint that handles sensitive user data in a healthcare co
Walk me through how you would design a secure API endpoint that handles sensitive user data in a healthcare context.
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?
How do you manage database migrations and schema updates in a zero-downtime deployment environment?
How do you manage database migrations and schema updates in a zero-downtime deployment environment?
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 high availability and fault tolerance in your service architecture?
How do you ensure high availability and fault tolerance in your service 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?
Walk through your approach to writing comprehensive unit and integration tests for a newly built feature.
Walk through your approach to writing comprehensive unit and integration tests for a newly built feature.
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 explain how you approach debugging a complex performance bottleneck in a distributed backend system?
Can you explain how you approach debugging a complex performance bottleneck in a distributed backend system?
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 Lyra Health candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Lyra Health loop
- Write out the reported sequence: Recruiter Screening, Technical Evaluations, Conversations with Leaders.
- 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 Full-Stack Engineering
- Spend the session on Full-Stack Engineering, which Lyra Health candidates report being tested on.
- Write one worked example in Full-Stack Engineering and time yourself on it.
Deliverable: One timed worked example in Full-Stack Engineering.
03Work Salesforce Development (General)
- Spend the session on Salesforce Development (General), which Lyra Health candidates report being tested on.
- Write one worked example in Salesforce Development (General) and time yourself on it.
Deliverable: One timed worked example in Salesforce Development (General).
04Work Coding Round
- Spend the session on Coding Round, which Lyra Health candidates report being tested on.
- Write one worked example in Coding Round and time yourself on it.
Deliverable: One timed worked example in Coding Round.
05Answer out loud: Technical and Domain Knowledge
- Answer aloud, timed: What languages and frameworks do you have the most professional experience with, and how do you decide which tool is best for a given problem?
- Answer aloud, timed: Walk me through how you would design a secure API endpoint that handles sensitive user data in a healthcare context.
Deliverable: Spoken answers to 2 reported Technical and Domain Knowledge question(s), under time.
06Answer out loud: Coding and Problem Solving
- Answer aloud, timed: Write a function to parse and validate a complex JSON payload containing nested user preferences.
- Answer aloud, timed: Given an array of log timestamps, implement an algorithm to find peak usage intervals within a specified window.
Deliverable: Spoken answers to 2 reported Coding and Problem Solving question(s), under time.
07Answer out loud: Behavioral and Cultural Alignment
- Answer aloud, timed: Tell me about yourself and walk me through your past work experience, highlighting a project where you took ownership of a major component.
- Answer aloud, timed: Describe a time when you had a disagreement with a product manager or cross-functional partner regarding technical debt versus feature delivery. How did you resolve it?
Deliverable: Spoken answers to 2 reported Behavioral and Cultural Alignment 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.
How do you handle edge cases, null values, and asynchronous operations in your daily coding work?
How do you handle edge cases, null values, and asynchronous operations in your daily coding 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?
Tell me about yourself and walk me through your past work experience, highlighting a project where you took ow
Tell me about yourself and walk me through your past work experience, highlighting a project where you took ownership of a major component.
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 a disagreement with a product manager or cross-functional partner regarding techn
Describe a time when you had a disagreement with a product manager or cross-functional partner regarding technical debt versus feature delivery. 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?
How do you handle a situation where a critical production bug occurs and you need to coordinate a fix under pr
How do you handle a situation where a critical production bug occurs and you need to coordinate a fix under pressure?
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 me about a time when you mentored a junior engineer or helped improve team engineering processes.
Tell me about a time when you mentored a junior engineer or helped improve team engineering processes.
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
How do you handle edge cases, null values, and asynchronous operations in your daily coding work?
- 02
Tell me about yourself and walk me through your past work experience, highlighting a project where you took ownership of a major component.
- 03
Describe a time when you had a disagreement with a product manager or cross-functional partner regarding technical debt versus feature delivery. How did you resolve it?
- 04
How do you handle a situation where a critical production bug occurs and you need to coordinate a fix under pressure?
How difficult are the technical interviews, and how much preparation time should I plan?
The technical loops are rigorous and expect solid coding fundamentals and clear communication, but they are entirely manageable with focused preparation. Plan for at least 3 to 4 weeks of dedicated study, focusing on data structures, system design patterns, and reviewing your past project experience.
Lyra Health Software Engineer candidate reports ↗What differentiates successful candidates from those who do not pass?
Successful candidates stand out by communicating their thought process clearly, discussing trade-offs proactively, and demonstrating deep ownership of their past work. Interviewers value engineers who collaborate well, admit when they do not know something, and think critically about system scale and edge cases.
Lyra Health Software Engineer candidate reports ↗What is the company culture like for engineering teams?
The engineering culture emphasizes collaboration, empathy, sustainable pacing, and a strong connection to the company's mission. Employees consistently report positive team dynamics and a healthy work-life balance, making it a supportive environment for professional growth.
Lyra Health Software Engineer candidate reports ↗What is the typical timeline from initial recruiter screen to final offer?
The entire interview process is typically streamlined, moving from the recruiter screen through technical rounds and final loops over the course of 2 to 4 weeks. Communication is generally prompt, allowing candidates to move through the pipeline efficiently.
Lyra Health Software Engineer candidate reports ↗Are the roles remote or location-dependent?
Many engineering positions offer flexible remote options within the United States, while certain roles may be aligned with specific hubs or hybrid working arrangements. Check the specific job posting details for location and regional requirements.
Lyra Health Software Engineer candidate reports ↗What topics does Lyra Health test in interviews?
Lyra Health interviews most often cover Presentation Skills, Stakeholder Management, SQL, UX/UI Design, and Communication Skills. The exact emphasis depends on the specific role you apply for.
Lyra 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.
- 01Lyra 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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