cswork / libraryOpen practice workspace

Interview guides · Austin Community College

Austin Community College Software Engineer Interview Guide

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

The 60-second brief

The role of a Software Engineer at Austin Community College (ACC) is integral to the institution's mission of providing quality education and support services to a diverse student population. As a Software Engineer, you will be responsible for designing, developing, and maintaining software applications that enhance the educational experience and operational efficiency of the college. Your work directly impacts students, faculty, and administrative staff, facilitating smoother interactions and access to vital resources. In this position, you will collaborate with cross-functional teams to develop innovative solutions that address real-world challenges faced by the college community. Your contributions could range from developing learning management systems to enhancing administrative platforms, ensuring that technology serves as a bridge to educational success.

This guide is scoped to a Software Engineer candidate at Austin Community College.

Focus areas

  • Behavioral Interviewing
  • Project Discussion
  • Screening Interviews

The Austin Community College interview process

Austin Community College candidates report 3 rounds over 3-5 weeks. The stages below are what candidates describe, not a published process.

Screening Interview

Initial interview to assess basic qualifications and fit for the role.

What to demonstrate

  • Initial interview to assess basic qualifications and fit for the role
  • Depth in Behavioral Interviewing

How to prepare

  • Answer aloud and timed: Explain how you approach debugging a complex software issue.
  • Answer aloud and timed: What programming languages are you proficient in, and how have you applied them in your projects?

Technical Interviews

One or more interviews focusing on technical skills and problem-solving abilities.

What to demonstrate

  • One or more interviews focusing on technical skills and problem-solving abilities
  • Depth in Behavioral Interviewing

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 ensure the quality of your code?

HR Interview

Final interview with HR to discuss company culture and candidate alignment.

What to demonstrate

  • Final interview with HR to discuss company culture and candidate alignment
  • Depth in Behavioral Interviewing

How to prepare

  • Answer aloud and timed: Discuss your experience with version control systems like Git.
  • Answer aloud and timed: Describe a time when you had to work with a difficult team member. How did you handle the situation?

Where candidates lose points

Understand ACC's Values

Familiarize yourself with the college's mission and values to articulate how your personal values align with theirs during the interview.

Practice Coding

Regularly practice coding challenges to sharpen your skills, particularly for technical interviews that may include live coding exercises.

Be Ready for Behavioral Questions

Prepare for storytelling questions that showcase your experiences, challenges, and successes in previous roles.

Show Enthusiasm

Express genuine interest in the role and the impact of your work on the college community; enthusiasm can make a significant positive impression.

Follow Up

After the interview, consider sending a thank-you note to express appreciation for the opportunity, reinforcing your interest in the position.

Questions & practice

Write a function to reverse a string.

Medium · Coding / Algorithms

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. State the target complexity and say which constraint rules the naive version out.

Follow-up

  • How does this change if the input no longer fits in memory?
  • What is the worst case, and how likely is it on real data?

Explain the difference between a stack and a queue. Provide use cases for each.

Medium · Coding / Algorithms

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. State the target complexity and say which constraint rules the naive version out.

Follow-up

  • How does this change if the input no longer fits in memory?
  • What is the worst case, and how likely is it on real data?

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

Medium · Coding / Algorithms

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. State the target complexity and say which constraint rules the naive version out.

Follow-up

  • How does this change if the input no longer fits in memory?
  • What is the worst case, and how likely is it on real data?

Discuss the trade-offs between different sorting algorithms.

Medium · Coding / Algorithms

Approach

  1. Restate the input: its shape, its size, and what is guaranteed about it.
  2. Name the brute-force solution and its complexity before improving on it.
  3. Choose the data structure from the access pattern, not from familiarity.
  4. State the target complexity and say which constraint rules the naive version out.

Follow-up

  • How does this change if the input no longer fits in memory?
  • What is the worst case, and how likely is it on real data?

How would you approach optimizing a slow-running SQL query?

Medium · Coding / Algorithms

Approach

  1. Name the grain you start from and join outward from it.
  2. Check whether any join is one-to-many before aggregating, or the sums inflate.
  3. Say which index the query would use, and what makes it unusable.
  4. 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

Medium · optimistic concurrency · transactional outbox · audit history

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

Approach

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

Follow-up

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

What programming languages are you proficient in, and how have you applied them in your projects?

Medium · Technical / Domain Questions

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. 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.

Medium · Technical / Domain Questions

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. 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 the quality of your code?

Medium · Technical / Domain Questions

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. 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 manage student enrollment?

Medium · Problem-solving / Case Studies

Approach

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

Follow-up

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

If tasked with improving an existing application, what steps would you take to identify areas for enhancement?

Medium · Problem-solving / Case Studies

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. Work from the requirement backwards to the design.

Follow-up

  • What assumption would you test first?
  • How would you know your answer was wrong?

Provide a solution for a hypothetical scenario where a system is experiencing frequent downtimes.

Medium · Problem-solving / Case Studies

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. 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 evaluate the success of a software project?

Medium · Problem-solving / Case Studies

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. Work from the requirement backwards to the design.

Follow-up

  • What assumption would you test first?
  • How would you know your answer was wrong?

Discuss a situation where you had to make a decision with incomplete information.

Medium · Problem-solving / Case Studies

Approach

  1. Clarify what is being asked and what a complete answer contains.
  2. State your assumptions explicitly before working the problem.
  3. Say what you would check first and why it is the highest-information step.
  4. Work from the requirement backwards to the design.

Follow-up

  • What assumption would you test first?
  • How would you know your answer was wrong?

Explain how you approach debugging a complex software issue.

Medium · Technical / Domain Questions

Approach

  1. Establish what changed and when, before forming any theory.
  2. Pick a bisection that eliminates candidates whichever way it turns out.
  3. Check the instrumentation before believing the symptom.
  4. Separate the trigger from the cause; the deploy is rarely the bug.

Follow-up

  • What would you look at first, and what would it rule out?
  • How would you tell a cause from a coincidence here?

Suggested practice checklist

Built from the rounds and topics Austin Community College candidates report.

Day 1 — Map the Austin Community College loop

  • Write out the reported sequence: Screening Interview, Technical Interviews, HR 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 3 reported rounds, with the weakest marked.

Day 2 — Work Behavioral Interviewing

  • Spend the session on Behavioral Interviewing, which Austin Community College candidates report being tested on.
  • Write one worked example in Behavioral Interviewing and time yourself on it.

Deliverable: One timed worked example in Behavioral Interviewing.

Day 3 — Work Project Discussion

  • Spend the session on Project Discussion, which Austin Community College candidates report being tested on.
  • Write one worked example in Project Discussion and time yourself on it.

Deliverable: One timed worked example in Project Discussion.

Day 4 — Work Screening Interviews

  • Spend the session on Screening Interviews, which Austin Community College candidates report being tested on.
  • Write one worked example in Screening Interviews and time yourself on it.

Deliverable: One timed worked example in Screening Interviews.

Day 5 — Answer out loud: Technical / Domain Questions

  • Answer aloud, timed: Explain how you approach debugging a complex software issue.
  • Answer aloud, timed: What programming languages are you proficient in, and how have you applied them in your projects?

Deliverable: Spoken answers to 2 reported Technical / Domain Questions question(s), under time.

Day 6 — Answer out loud: Behavioral / Leadership

  • Answer aloud, timed: Describe a time when you had to work with a difficult team member. How did you handle the situation?
  • Answer aloud, timed: Can you provide an example of a project where you took on a leadership role?

Deliverable: Spoken answers to 2 reported Behavioral / Leadership question(s), under time.

Day 7 — Answer out loud: Problem-solving / Case Studies

  • Answer aloud, timed: How would you design a system to manage student enrollment?
  • Answer aloud, timed: If tasked with improving an existing application, what steps would you take to identify areas for enhancement?

Deliverable: Spoken answers to 2 reported Problem-solving / Case Studies question(s), under time.

Behavioural preparation

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

Discuss your experience with version control systems like Git.

Medium · Technical / Domain Questions

Approach

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

Follow-up

  • What would you do differently if you ran that again?
  • How did you know your change caused the improvement?

Describe a time when you had to work with a difficult team member. How did you handle the situation?

Medium · Behavioral / Leadership

Approach

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

Follow-up

  • What would you do differently if you ran that again?
  • How did you know your change caused the improvement?

Can you provide an example of a project where you took on a leadership role?

Medium · Behavioral / Leadership

Approach

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

Follow-up

  • What would you do differently if you ran that again?
  • How did you know your change caused the improvement?

How do you prioritize tasks when working on multiple projects?

Medium · Behavioral / Leadership

Approach

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

Follow-up

  • What would you do differently if you ran that again?
  • How did you know your change caused the improvement?

Discuss a time when you had to adapt to a significant change at work.

Medium · Behavioral / Leadership

Approach

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

Follow-up

  • What would you do differently if you ran that again?
  • How did you know your change caused the improvement?

What motivates you to perform well in your role?

Medium · Behavioral / Leadership

Approach

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

Follow-up

  • What would you do differently if you ran that again?
  • How did you know your change caused the improvement?