What to Ask Before Hiring a Custom Software Developer

Before hiring a custom software developer, ask about relevant experience, technology choices, security practices, code and data ownership, scope, testing, maintenance, communication, and deployment. The right developer should answer each question clearly, in writing where it matters, and explain the trade-offs behind every recommendation. If the answers are vague, rushed, or missing, that is useful information too.

Custom software is different from buying an off-the-shelf product. You are choosing the person or team who will shape how your business works every day, how your data is handled, and how easily the system can change later. Use this guide in your first calls, and keep the written answers so you can compare developers fairly.

Start With the Business Problem, Not the Technology

Before you ask about programming languages, describe the problem you need to solve. What work is slow, manual, or error-prone today? Who will use the software, and what should be easier for them after launch? A good developer will ask follow-up questions before proposing a solution, and may suggest a smaller first version or a different process. That shows they are thinking about value, not just building more features.

• How would you describe our problem back to us, in your own words?
• What is the smallest useful version we could launch first?
• What would you leave out of the first version, and why?
• How will we know whether the software is working after launch?

What Should You Ask About Portfolio and Experience?

Ask for work close to your project in purpose, complexity, or audience, not just work that looks polished. Ask to see live systems you can open and try, where possible. A working system, a clear description of who uses it, and an honest account of what changed after launch are far more useful than screenshots.

• Have you built software for a similar type of business or workflow?
• What did that system do, and who used it every day?
• What went wrong during that project, and how did you fix it?
• Who else worked on the project, and what was your role?

Listen for specifics. A strong answer names the problem, the users, and the result. A weak answer stays general or claims everything went perfectly. Every real project meets a difficulty somewhere, and how a developer handled it tells you a great deal. For a broader view, see How to Choose a Website Developer in Detroit.

How Should a Developer Explain Technology Selection?

Technology affects how fast software can be built, how easy it is to maintain, how well it connects to your other tools, and how easy it is to find help later. You do not need to become a programmer to judge this. You need a clear explanation in plain language: why this choice, for this project, at this time?

• What technology do you recommend, and why is it a good fit?
• What alternatives did you consider, and what are their trade-offs?
• How will it connect to the tools we already use?
• How will it handle more users or more records later?

Be cautious if a developer insists on one technology for every project or cannot explain the trade-offs. A familiar, well-supported stack is often the safer choice for a business system that needs to last. If you are weighing a custom build against an existing platform, Custom Website vs WordPress explains that trade-off, and custom software and MVP development covers the related service.

What Security Questions Should You Ask?

Security should be built in from the start, not added as an afterthought. If your software will hold customer details, staff records, booking information, or payment details, raise security in the first conversation. A professional developer should explain, in plain terms, how accounts and permissions work, how data is protected, and how problems are found and fixed. Vague reassurance is not an answer.

• How will user roles and permissions work?
• How is data protected when stored and when sent between systems?
• How are passwords, API keys, and other secrets stored?
• How do you keep third-party libraries up to date?
• How do you test for common web application risks before launch?

Two references can frame this conversation. The NIST Secure Software Development Framework (SSDF) organises secure development practices into four groups: preparing the organisation, protecting the software, producing well-secured software, and responding to vulnerabilities. The OWASP Top 10:2025 lists the most critical web application security risks, with broken access control ranked first. Also ask whether real customer data will be used during testing. In most cases, it should not be.

Who Owns the Code, the Data, and the Accounts?

Ownership is one of the most important questions to settle before work begins, and one of the easiest to overlook. Get the answer in writing, in the agreement, before you sign. Ask who will own the source code, design files, database, and custom work created for your project, and when ownership transfers.

• Who owns the source code and intellectual property?
• Will we have access to the code repository during the project?
• Who owns our data, and how can we export it in full?
• Which accounts will be in our name: domain, hosting, and third-party services?
• If we part ways, what does handover include?

Your data should always belong to you, and you should be able to export it in a usable format. Your code repository, hosting, and domain should be under accounts you control, not under one developer's personal account.

How Should Scope Be Defined?

Scope is a shared, written description of what will be built, what will not be built yet, and how changes will be handled. Poorly defined scope is one of the most common causes of delays and misunderstandings. Ask for a written scope before development starts, listing the main features, user roles, key workflows, and integrations.

• What is included in the first version, and what is not?
• How are features prioritised when time is limited?
• How will change requests be handled and approved?
• What happens if we discover a missing requirement halfway through?

Divide features into must-have, should-have, and future items. Must-have features are needed for the first version to work. Should-have features can wait. Future features can be added later, once real users have tried the system. For a related comparison, see Custom CRM vs Off-the-Shelf CRM.

What Testing Practices Should You Expect?

Testing is how a developer proves the software works before your team and customers rely on it. Ask how testing is done throughout the project, not only at the end. Good testing includes checking individual parts, checking how parts work together, checking performance, checking security, and letting real users try the system before launch.

• How do you test during development?
• What kinds of testing are included?
• Will we be able to test the system ourselves before launch?
• How are bugs reported, prioritised, and confirmed as fixed?

User acceptance testing deserves special attention. Agree in advance who will test, what they will test, and what counts as ready.

What Should Maintenance and Support Cover?

Software is never truly finished. After launch, it needs updates, fixes, backups, monitoring, and occasional improvements. Ask about maintenance before the project starts, while you still have leverage to agree clear terms.

• What support is included after launch, and for how long?
• How do we report a problem, and how are urgent issues handled?
• How are backups made, tested, and restored?
• How are security updates handled?
• What monitoring is in place, and who is alerted if something fails?

A website and software care plan can cover updates, monitoring, backups, and small improvements after launch. Whatever arrangement you choose, get it in writing, including response times and what counts as a defect versus new work.

How Will Project Communication Work?

Clear communication is often the difference between a smooth project and a frustrating one. Ask how often you will hear from the developer, what you will see, and who your main contact will be. Look for regular, working demonstrations rather than long status reports alone. Seeing the software take shape every week or two helps you catch misunderstandings early, when they are still cheap to fix.

• Who is our main point of contact?
• How often will we see working progress?
• How will decisions be recorded and confirmed?
• What do you need from us to keep the project moving?

What Should You Ask About Deployment and Hosting?

Deployment is how software moves from development to live use. Hosting is where it runs. Both affect reliability, security, and your ability to recover if something goes wrong. Ask where the software will be hosted, who controls that account, and what happens if the server fails.

• Where will the software be hosted, and who controls the account?
• Is there a staging environment for testing changes before launch?
• How are releases planned, tested, and rolled back if needed?
• How are backups stored and tested?
• What monitoring and alerts are in place after launch?

A phased rollout can reduce risk for a larger system: a small group tries it first, issues are fixed, and the wider launch follows.

Your Checklist: Questions to Ask a Software Developer

Use this checklist in your first calls. You do not need to ask every question in one meeting, but you should have a clear answer to each area before you sign.

Experience and fit

• Have you built something similar, and what went wrong?
• Who will work on our project?
• What is the smallest useful first version?

Technology

• What technology do you recommend, and why?
• How will it connect to our existing tools?
• How will it scale as we grow?

Security and ownership

• How are permissions, data protection, and secrets handled?
• Who owns the code and data, and how do we export both?
• Which accounts are in our name?

Scope, testing, and delivery

• What is included in the first version, and what is out of scope?
• How are changes handled and approved?
• How is the software tested, and when can we try it?
• How are releases, rollbacks, and backups handled?

Support and communication

• What support is included after launch?
• How often will we see working progress?
• Who is our main contact?

Red Flags to Watch For

Watch for a developer who cannot show relevant work, cannot explain their technology choice, or gives only vague answers on security and ownership. Watch for pressure to sign quickly, a refusal to put key terms in writing, or a claim that testing, maintenance, and documentation are unnecessary. Other warning signs include everything held under one person's personal accounts, no plan for backups, and no clear handover process. A good developer welcomes specific questions.

Compare developers on the same questions, in writing, rather than on enthusiasm alone. The best choice is usually the developer who understands your problem, explains trade-offs honestly, and gives you a clear plan for building, launching, and supporting the software. If you are planning a custom system, a custom dashboard or CRM, or a first product version, explore all services, browse more insights, or get in touch.

The Bottom Line

Compare developers on the same questions, in writing, rather than on enthusiasm alone. The best choice is usually the developer who understands your problem, explains trade-offs honestly, and gives you a clear plan for building, launching, and supporting the software. If you are planning a custom system, bring the checklist from this guide to your first calls — and expect clear answers on experience, technology, security, ownership, scope, testing, maintenance, communication, and deployment before you sign.