What do junior software engineer interviews in Australia ask?

Your first software engineering interview in Australia can feel unpredictable. One company sends an online coding test, another wants a chat about your projects, and a third asks you to explain React state on a whiteboard. The good news is that most junior interviews draw on the same handful of question types. This guide walks through what employers are checking for, the questions you are likely to hear, and how to prepare answers you can explain with confidence.

What employers are really testing

Interview questions follow the job. Jobs and Skills Australia's Software and Applications Programmers occupation profile describes the work as designing, developing, testing, maintaining and documenting program code to meet user requirements and technical specifications. Its task list includes writing and maintaining code, testing and debugging, and writing technical and user documentation.

For a junior role, that usually turns into four questions an interviewer is trying to answer:

• Can you write and read code in the language and framework the team uses?

• Can you work through a problem you have not seen before and explain your thinking?

• Can you find and fix bugs, and do you test your own work?

• Will you communicate well with the team, ask for help and keep learning?

The stages you may go through

Every employer runs its process differently, so treat this as a general picture rather than a fixed sequence. A junior software engineer process often includes some of these steps:

• A short screening call with a recruiter or hiring manager about your background, availability and work rights.

• A technical assessment, such as an online coding test or a small take-home task.

• A technical interview where you talk through code, a past project or a problem.

• A behavioural interview about teamwork, mistakes and how you learn.

Screening questions

Early questions are usually practical. Expect things like "Tell me about yourself", "Why this role?", "When could you start?" and "Do you have full working rights in Australia?"

Answer the work rights question clearly and honestly. If you hold a visa, the Department of Home Affairs explains that Visa Entitlement Verification Online (VEVO) lets visa holders check their own visa conditions and send proof of them to others, such as employers. Registered organisations can also use VEVO to check a visa holder's conditions with their permission. Check your own conditions before the interview so you can answer accurately.

Technical questions on web fundamentals

The technical questions depend on the stack in the job ad. If the ad mentions JavaScript, React or Node.js, be ready for questions like these:

HTML, CSS and JavaScript

• What is the difference between let, const and var?

• What is the difference between == and === in JavaScript?

• How would you make this page layout work on a phone screen?

• What is a promise, and when would you use async and await?

React

• What is the difference between state and props?

• When would you use a hook such as useState or useEffect?

• How does client-side routing work in a React app?

• How would you test a component?

Back end and APIs

• What happens between a user clicking a button and data coming back from an API?

• How would you design a simple REST endpoint for creating a record?

• How would you handle an error from a database call?

• How do you test an API you have built?

You do not need textbook definitions. Interviewers usually want a short, accurate answer followed by a real example from code you have written.

Problem-solving and coding questions

Coding questions for junior roles often focus on everyday logic: working with arrays and strings, filtering and sorting data, or fixing a small bug in existing code. How you work often matters as much as the final answer.

• Repeat the problem back in your own words and ask clarifying questions.

• Talk through a simple approach before you start typing.

• Write working code first, then improve it if there is time.

• Test your solution with a normal case and an edge case, such as an empty list.

• If you get stuck, say what you are trying and why. Silence makes it hard for the interviewer to help.

Project and debugging questions

For junior candidates, your own projects often stand in for work experience. Expect "Walk me through a project you built" and follow-ups such as "Why did you choose that approach?", "What was the hardest bug?" and "What would you change now?"

Pick one project you know inside out. Be ready to explain what it does, how the front end and back end connect, how you tested it, and one problem you solved along the way. Honest answers about what you would improve usually land better than claiming the project is perfect.

Behavioural questions

Behavioural questions check how you work with people. Common examples include:

• Tell me about a time you worked in a team.

• Tell me about a mistake you made and what you learned.

• How do you handle feedback on your code?

• How do you learn a new technology quickly?

A simple way to structure answers is STAR: the Situation, the Task you had, the Action you took and the Result. Keep the focus on what you did, and use examples from study, projects, volunteering or part-time work if you have no IT job history yet.

Take-home tasks and unpaid trials

Some employers ask candidates to complete a short task or demonstrate their skills. The Fair Work Ombudsman's guidance on unpaid trials says an unpaid work trial is a demonstration, under supervision, of the skills needed for the job. It says an unpaid trial may be unlawful if it is not necessary to show the skills for the job or goes on longer than needed, involves more than a demonstration of skills relevant to the job, or is not directly supervised. If you are unsure whether a request crosses that line, read the guidance or contact the Fair Work Ombudsman.

Questions to ask the interviewer

Most interviews end with "Do you have any questions for us?" Have two or three ready, for example:

• What would a typical first few weeks look like for a junior engineer here?

• How does the team review code and share knowledge?

• What technologies would I be working with day to day?

How Job Ready Master can help

Job Ready Master's Junior Software Engineer Program is built around the same skills these interviews test. The practical training covers HTML, CSS and JavaScript, React, and back-end basics with Node.js, including building an API and testing it with Postman, and finishes with a mock test that simulates a day in the life of a software engineer. The program also includes resume and cover letter correction, help setting up your LinkedIn and Seek profiles, and 1 on 1 interview coaching.

You can also download our free ebook for IT students from the free ebooks page. If you would like to talk through your next step, book a free consultation with our team.