The Software Engineer role at Ezcater is pivotal in driving the company's mission to simplify food ordering for businesses, creating a seamless experience for users and clients alike. As a Software Engineer, you will develop and maintain the software solutions that power Ezcater's platform, impacting how users interact with the service. This role not only involves coding but also entails collaborating with cross-functional teams to enhance product offerings, ensuring that Ezcater remains at the forefront of the catering industry. In this position, you will tackle complex problems, from optimizing backend services to designing intuitive front-end interfaces. Your work will directly influence product features, user engagement, and ultimately, customer satisfaction. By leveraging modern technologies and methodologies, you will contribute to creating scalable solutions that meet the evolving needs of Ezcater's diverse clientele. This role offers an exciting opportunity to be part of a dynamic team and make a meaningful impact in a rapidly growing company.
Screening Call
reportedInitial call with a recruiter to assess your background and fit for the role.
What to demonstrate
- Initial call with a recruiter to assess your background and fit for the role
- Depth in Coding interviews (general live coding/problem solving)
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 Coding Session
reportedEngage in a coding session to demonstrate your technical skills.
What to demonstrate
- Engage in a coding session to demonstrate your technical skills
- Depth in Coding interviews (general live coding/problem solving)
How to prepare
- Answer aloud and timed: What are the key principles of RESTful API design?
- Answer aloud and timed: Describe a challenging technical problem you solved in a previous project.
Take-Home Challenge
reportedComplete a coding challenge at home to showcase your problem-solving abilities.
What to demonstrate
- Complete a coding challenge at home to showcase your problem-solving abilities
- Depth in Coding interviews (general live coding/problem solving)
How to prepare
- Answer aloud and timed: How do you stay updated on the latest technologies and industry trends?
- Answer aloud and timed: Design a system for a food ordering service.
Multiple Interviews
reportedParticipate in several interviews with engineers and managers focusing on technical and behavioral assessments.
What to demonstrate
- Participate in several interviews with engineers and managers focusing on technical and behavioral assessments
- Depth in Coding interviews (general live coding/problem solving)
How to prepare
- Answer aloud and timed: How would you ensure scalability for a rapidly growing application?
- Answer aloud and timed: Discuss trade-offs between monolithic and microservices architecture.
Project Discussions
reportedDiscuss your past projects and experiences relevant to the role.
What to demonstrate
- Discuss your past projects and experiences relevant to the role
- Depth in Coding interviews (general live coding/problem solving)
How to prepare
- Answer aloud and timed: What strategies would you use for database design in a high-traffic application?
- Answer aloud and timed: How would you handle data consistency in distributed systems?
System Design Challenges
reportedEngage in discussions about system design to evaluate your architectural skills.
What to demonstrate
- Engage in discussions about system design to evaluate your architectural skills
- Depth in Coding interviews (general live coding/problem solving)
How to prepare
- Answer aloud and timed: Describe a time you had to resolve a conflict within your team.
- Answer aloud and timed: How do you prioritize tasks when working under tight deadlines?
Cultural Fit Assessment
reportedAssess your alignment with the company's culture and values.
What to demonstrate
- Assess your alignment with the company's culture and values
- Depth in Coding interviews (general live coding/problem solving)
How to prepare
- Answer aloud and timed: Can you give an example of how you contributed to a team’s success?
- Answer aloud and timed: What motivates you in your work?
PracHub editorial advice for the preparation topics above.
Know the Tech Stack
Familiarize yourself with the technologies Ezcater uses. Understanding the specific tools and frameworks will help you relate your experience during the interview.
Be Prepared for Behavioral Questions
Reflect on your past experiences and how they align with Ezcater's values. Use the STAR method (Situation, Task, Action, Result) to structure your responses.
Showcase Your Passion for Technology
Be enthusiastic about the work you do. Highlight projects or technologies you are passionate about and how they relate to Ezcater’s mission.
Ask Insightful Questions
Prepare thoughtful questions about the team, projects, and company culture to demonstrate your interest and engagement.
Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.
Explain the difference between synchronous and asynchronous programming.
Explain the difference between synchronous and asynchronous programming.
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?
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, find the two numbers that add up to a specific target.
Given a list of integers, 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?
How would you implement a binary search algorithm?
How would 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?
Solve a problem related to string manipulation.
Solve a problem related to string manipulation.
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?
Keep soft-deleted accounts from blocking re-registration
app_user holds user_id, tenant_id, email CITEXT, password_hash (NULL for SSO principals), email_verified_at, auth_version, status ('invited','active','suspended','deactivated'), created_at, updated_at, deleted_at. Two live accounts for one address inside a tenant must be impossible, but an address freed by a soft delete must be reusable, and the same tenant may delete and re-register it repeatedly. Write the uniqueness DDL for PostgreSQL 16, then the equivalent for MySQL 8 where partial indexes do not exist, and say what each permits once three deleted rows already hold that address.
Approach
- Start from what is actually unique: not (tenant_id, email), but (tenant_id, email) among live rows. PostgreSQL says that directly — CREATE UNIQUE INDEX app_user_live_email ON app_user (tenant_id, email) WHERE deleted_at IS NULL. A full constraint over the same two columns burns the address permanently the first time someone deletes an account.
- Keep case-insensitivity in the type or the index, never in the application: CITEXT as given, or UNIQUE (tenant_id, lower(email)) as an expression index where the extension is unavailable. A case-sensitive unique column is exactly how two accounts for one human appear.
- For MySQL 8 the predicate has to move inside the key: add a discriminator column that is a constant 0 while the row is live and is set to user_id on delete, with UNIQUE (tenant_id, email, deleted_marker). Live rows share the constant and still collide; deleted rows differ from each other and stop colliding.
- State the NULL variant and its dependency: leaving the marker NULL for deleted rows also works, because a unique index treats NULLs as distinct — true in MySQL, and true in PostgreSQL only under the default NULLS DISTINCT, which PostgreSQL 15 lets you reverse. Check the polarity against the three existing deleted rows: constant-on-live is what preserves the collision you want, and reversing it silently admits duplicate live accounts.
Follow-up
- A deleted account re-registers with the same address the next day. Do the old resource rows follow the new user_id, and how does the API keep the two principals apart?
- How do you honour an erasure request while resource_revision.actor_user_id still references this table?
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?
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?
What are the key principles of RESTful API design?
What are the key principles of RESTful API design?
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?
Describe a challenging technical problem you solved in a previous project.
Describe a challenging technical problem you solved in a previous project.
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 updated on the latest technologies and industry trends?
How do you stay updated on the latest technologies and industry trends?
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 system for a food ordering service.
Design a system for a food ordering service.
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 ensure scalability for a rapidly growing application?
How would you ensure scalability for a rapidly growing application?
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 trade-offs between monolithic and microservices architecture.
Discuss trade-offs between monolithic and microservices 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 strategies would you use for database design in a high-traffic application?
What strategies would you use for database design in a high-traffic application?
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 handle data consistency in distributed systems?
How would you handle data consistency in distributed systems?
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 how you would approach a new feature request from a client.
Describe how you would approach a new feature request from a client.
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 decide which bug fixes to prioritize?
How would you decide which bug fixes to prioritize?
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 encountered a major architectural flaw in a production system, what steps would you take?
If you encountered a major architectural flaw in a production system, what steps would you take?
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?
Design an algorithm to detect cycles in a graph.
Design an algorithm to detect cycles in a graph.
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?
You have a system that is responding slowly. How would you troubleshoot the issue?
You have a system that is responding slowly. How would you troubleshoot the 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?
Outline your thought process for debugging a complex application.
Outline your thought process for debugging a complex application.
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 Ezcater candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Ezcater loop
- Write out the reported sequence: Screening Call, Technical Coding Session, Take-Home Challenge, Multiple Interviews, Project Discussions, System Design Challenges.
- 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 7 reported rounds, with the weakest marked.
02Work Coding interviews (general live coding/problem solving)
- Spend the session on Coding interviews (general live coding/problem solving), which Ezcater candidates report being tested on.
- Write one worked example in Coding interviews (general live coding/problem solving) and time yourself on it.
Deliverable: One timed worked example in Coding interviews (general live coding/problem solving).
03Work Technical screening (recruiter/engineer phone screens)
- Spend the session on Technical screening (recruiter/engineer phone screens), which Ezcater candidates report being tested on.
- Write one worked example in Technical screening (recruiter/engineer phone screens) and time yourself on it.
Deliverable: One timed worked example in Technical screening (recruiter/engineer phone screens).
04Work Frontend development with React
- Spend the session on Frontend development with React, which Ezcater candidates report being tested on.
- Write one worked example in Frontend development with React and time yourself on it.
Deliverable: One timed worked example in Frontend development with React.
05Answer out loud: Technical / Domain Questions
- Answer aloud, timed: Explain the difference between synchronous and asynchronous programming.
- Answer aloud, timed: How do you ensure code quality and maintainability?
Deliverable: Spoken answers to 2 reported Technical / Domain Questions question(s), under time.
06Answer out loud: System Design / Architecture
- Answer aloud, timed: Design a system for a food ordering service.
- Answer aloud, timed: How would you ensure scalability for a rapidly growing application?
Deliverable: Spoken answers to 2 reported System Design / Architecture question(s), under time.
07Answer out loud: Behavioral / Leadership
- Answer aloud, timed: Describe a time you had to resolve a conflict within your team.
- Answer aloud, timed: How do you prioritize tasks when working under tight deadlines?
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 had to resolve a conflict within your team.
Describe a time you had to resolve a conflict within your 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?
How do you prioritize tasks when working under tight deadlines?
How do you prioritize tasks when working under tight deadlines?
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 give an example of how you contributed to a team’s success?
Can you give an example of how you contributed to a team’s success?
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?
What motivates you 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?
How do you approach feedback from peers and managers?
How do you approach feedback from peers and managers?
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 had to resolve a conflict within your team.
- 02
How do you prioritize tasks when working under tight deadlines?
- 03
Can you give an example of how you contributed to a team’s success?
- 04
What motivates you in your work?
How difficult are the interviews at Ezcater?
The interviews are considered thorough and can range from average to difficult, depending on the position and the specific team. Candidates typically report needing substantial preparation time, especially for technical assessments.
Ezcater Software Engineer candidate reports ↗What differentiates successful candidates from others?
Successful candidates often demonstrate a strong grasp of technical skills, a clear problem-solving approach, and an alignment with Ezcater's values. They also communicate effectively and show enthusiasm for the role.
Ezcater Software Engineer candidate reports ↗What is the culture and working style like at Ezcater?
Ezcater promotes a collaborative and inclusive culture where team members are encouraged to share ideas and support one another. The emphasis on transparency and customer focus shapes the working style across teams.
Ezcater Software Engineer candidate reports ↗What is the typical timeline from the initial screen to an offer?
The interview process typically lasts around two weeks, though this may vary based on team availability and candidate schedules. Prompt communication is a hallmark of Ezcater’s hiring process.
Ezcater Software Engineer candidate reports ↗Are remote work or hybrid options available?
Ezcater offers flexibility in work arrangements, including remote and hybrid options, depending on team needs and individual preferences.
Ezcater Software Engineer candidate reports ↗What topics does Ezcater test in interviews?
Ezcater interviews most often cover Time Management, Stakeholder Communication, Cross-functional Collaboration, Coding interviews (general live coding/problem solving), and Product Management (PM). The exact emphasis depends on the specific role you apply for.
Ezcater 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.
- 01Ezcater 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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