Journal · How-to

Hire app developers: write a brief that gets you the right team

ArmTri Team · Oct 16, 2026 · 4 min read

A one-page product brief is the fastest way to find the right app team, and here is exactly what to put in it.

Why a good brief helps you hire app developers faster

If you want to hire app developers who build the right thing, the most useful document you can write is not a job description. It is a short product brief. A clear brief lets developers tell you quickly whether they fit, helps you compare proposals fairly and prevents the most expensive kind of mistake: a team that builds well, but builds the wrong thing.

A good brief fits on one or two pages. Here is what goes in it.

Start with the problem and the user

Open with the problem in plain language: who has it, how they solve it today and why that is frustrating. For example: 'Independent physiotherapists track patient exercises on paper and lose track between sessions.'

Then describe the main user and what success looks like for them. One sentence is enough: 'A patient opens the app, sees today's exercises with short videos and marks them as done.' Developers who read this understand the product faster than from any list of features.

If you have already talked to potential users, add one or two things they told you, in their own words. Real user language helps developers and designers make better small decisions every day.

Describe the first version, not the dream

List the few things the first version must do, and be honest about what can wait. A useful format is three short lists: must have at launch, nice to have later, and explicitly out of scope.

The out-of-scope list is the most underrated part of a product brief. It tells the app development team where not to spend time, and it protects your budget from good ideas that are simply too early.

If you are unsure what belongs in the first version, ask one question for each feature: would a user notice on day one if it were missing? If not, it can wait.

Platforms, integrations and constraints

Mobile app development choices depend on a few facts only you know. Do your users need iPhone, Android or both? Is a web app enough to start? Does the app need to work offline? Does it need to connect to existing systems, like a payment provider, a booking tool or your own database?

Add any constraints: data that must stay in a certain region, accessibility needs, a launch date tied to an event, or a budget range. Constraints are not limits on the team. They are information that lets the team propose the right approach.

What you do not need to decide

You do not need to choose the technology. Native or cross-platform, which backend, which database: a good team will propose options and explain the trade-offs. Your job is to describe the outcome, not the tools.

What you should share instead is what matters to you: speed to launch, low running costs, or easy maintenance by a future in-house team. These priorities guide technology choices better than any framework name.

You also do not need detailed screen designs. Rough sketches, screenshots of apps you like or a list of key screens help, but a designer on the team should own the details.

A brief you can copy

Use these headings and answer each in a few sentences: the problem, the main user, what the first version must do, what can wait, what is out of scope, platforms, integrations, constraints and deadlines, and examples of apps you like and why you like them.

If you can fill those in, you are ready to talk to developers, and your conversations will be about how to build, not what to build.

The short version

To hire app developers who build the right thing, write a short product brief first. Describe the problem, the user and the first version, separate what can wait from what is out of scope, list platforms, integrations and constraints, and leave technology choices to the team.

ArmTri's team builder asks for exactly this kind of brief and uses it to match developers, designers and product people for skill, personality and industry knowledge. Describe your app and see your team.