Introduction
Most businesses evaluate Odoo developers the same way they'd evaluate any other hire: check the portfolio, skim a few reviews, maybe ask for references. That approach misses the thing that actually predicts success or failure on an Odoo project, which is whether the developer understands the difference between what Odoo can already do and what genuinely needs custom code.
Hiring an Odoo developer can solve everything from a small workflow problem to a major ERP development backlog. It can also create another problem if the person you hire does not understand your Odoo environment, customizations or long-term requirements. For a broader look at the hiring process itself, see our complete guide on how to hire an Odoo developer.
Before you hire an Odoo developer, ask questions that help you understand how they work, what they have actually built, how they approach custom development and what happens after the initial project is delivered.
10 questions worth asking
1. Which Odoo Versions Have You Worked With?
Start with the version. Odoo releases new versions on a regular cycle, and experience with the current version matters. Ask the Odoo developer which versions they have worked with and whether they have handled upgrades involving custom modules.
The answer should be specific. You want to know what they have actually worked on rather than receiving a general statement that they “know Odoo.”
2. Which Odoo Modules and Applications Have You Customized?
Odoo covers many business functions, including CRM, sales, accounting, inventory, manufacturing, eCommerce, projects and more. Ask them to explain the original business requirement, why they concluded custom development was necessary rather than configuration, and what tradeoffs they weighed along the way. Someone with experience customizing a sales workflow may not automatically have the same experience with manufacturing or accounting.
Look for experience that matches your own requirements.
3. How Do You Decide Between Configuration, Customization and Development?
Not every Odoo requirement needs custom code. A requirement may already be supported by standard functionality, configuration, Odoo Studio or an existing application. If development is necessary, the next question is whether an existing module should be extended or whether a new module is justified. A good Odoo developer should be able to explain why they are recommending one approach over another.
Our own Odoo customization process follows the principle of assessing standard functionality before introducing additional customization or development.
4. Can You Show Me Relevant Odoo Development Work?
Ask for examples that resemble your project. Do not limit the question to screenshots. Ask what the developer actually built, what business problem it solved, which Odoo modules were involved and whether external systems were connected.
If your project involves eCommerce, ask for eCommerce-related examples. If you need integrations, ask about API work. If you need a custom module, ask about module development. Relevant experience is more useful than a long generic portfolio.
5. How Do You Handle Odoo Integrations?
If your project involves connecting Odoo to an ecommerce platform, a CRM, a payment provider, or any other external application, this question separates developers with real integration experience from those who've only worked inside Odoo's walls.
Ask specifically about their approach to authentication, error handling, and what happens when an external system is temporarily unavailable. A developer who's built production integrations will have real, specific answers here. Odoo's current documentation includes the External JSON-2 API in version 19, while older XML-RPC and JSON-RPC interfaces have a published future deprecation path. A developer working on integrations should therefore understand both the current environment and the version-specific implications of the APIs involved. Our Odoo Integration Services page outlines what a properly architected integration should account for.
6. How Do You Test Custom Modules and Changes Before Production?
Development should not move directly from a developer's machine into production. Ask what their testing process looks like. Testing may involve functional testing, integration testing, access-control checks, regression testing and user acceptance testing, depending on the project.
You should also understand whether development is performed in a separate environment before production deployment. The answer should give you confidence that testing is part of the development process rather than something added after a problem appears.
7. How Do You Handle Odoo Security and Access Rights?
Odoo can contain sensitive financial, operational, customer and employee information. Ask how the developer handles permissions, access rights and record rules. Odoo's own development documentation treats security as a core development concern, including access rights and record rules. The Odoo developer should be able to explain how the new functionality will respect the existing security model.
8. How Do You Prepare Customizations for Future Odoo Upgrades?
A customization may work perfectly today and become difficult to maintain during a future version upgrade. Ask how the developer structures custom modules, manages dependencies, documents changes and tests compatibility when the Odoo version changes. You should also ask whether they avoid unnecessary changes to core functionality. The objective is to make future maintenance manageable.
9. Who Owns the Code and Documentation?
Ownership is worth clarifying before development starts, not after. Ask who owns the custom modules being built, where the source code is stored, and who controls the repository. Ask who has production access, whether documentation will actually be delivered, and what a different developer would need to know to pick up the work if they had to.
This becomes especially important if you're working with an external developer and later decide to change providers. Your ERP shouldn't be dependent on one person's memory of how something was built.
10. What Happens After Deployment?
The project doesn't necessarily end when the feature goes live. It's worth asking what happens if a bug appears, an integration fails, users run into a problem, Odoo releases a new version, a third-party API changes, you need another feature, performance declines, or the assigned developer simply becomes unavailable. Support terms vary a lot by provider, so don't assume post-launch assistance is automatically included. Ask exactly what support is available, how issues get reported, who actually handles them, and how additional development requests are managed from there.
What Makes a Strong Odoo Developer?
What actually separates a genuinely skilled Odoo developer from someone who just sounds impressive in an interview is the ability to connect a technical requirement back to the actual business process behind it.
When you're evaluating candidates to hire an Odoo developer, listen for how they explain their reasoning, not just what they claim to know. A strong Odoo developer should be able to clearly explain why a feature genuinely needs custom development rather than standard configuration, why a particular module should be extended instead of replaced or worked around, and how a proposed change will affect existing workflows elsewhere in the system. They should be able to walk you through what happens to an integration if the external API on the other end changes, how they plan to test the customization before it reaches production, and how the solution will actually be maintained once it's live.
That kind of thinking matters because Odoo isn't a collection of isolated features bolted together. It's an integrated ERP, which means a change in one module can ripple into inventory, accounting, sales, or reporting in ways that aren't always obvious upfront. A developer who only thinks about the feature in front of them, without considering how it fits into the wider system, is far more likely to create problems that surface weeks or months later. We cover this exact failure pattern, and how to avoid it, in our guide to common Odoo implementation mistakes. The developer you hire should think like someone responsible for the whole environment, not just the one task they were assigned.
How to Hire an Odoo Developer Without Creating a Long-Term Dependency
One of the easiest mistakes businesses make when they hire an Odoo developer is ending up with a system only one person truly understands. It happens gradually. A developer builds something quickly, it works, and nobody asks the harder question of what happens if that developer isn't available six months from now. By the time that question actually comes up, it's usually too late to answer it cheaply.
You can avoid this by making documentation, source-code access, testing information, and deployment procedures a defined part of the engagement from day one, not an afterthought you negotiate later. If you hire a dedicated Odoo developer, make sure the knowledge they build up about your system isn't kept exclusively in their head. Insist on documentation as part of the deliverable, not a favor. If you're working with an Odoo development agency, ask directly how knowledge is shared across the team, so your project isn't quietly dependent on one specific consultant staying employed there. And if you hire a freelance Odoo developer, define the handover process before the work even starts, not after the relationship ends. Our comparison guide on Freelancer vs. Agency vs. Dedicated Odoo Developer breaks down how this risk plays out differently across each engagement model.
The goal here is continuity. A well-run Odoo environment should be able to survive a change in developer without a painful, expensive reconstruction process. If your ERP can only be maintained by one specific individual, that's not a resourcing convenience, it's a business risk you've built into your own system.
Ready to Hire an Odoo Developer?
Once you've worked through the questions in this guide, the next step is matching your project to the right engagement model, since the best answer looks different depending on what you actually need. For a clearly defined requirement with a known scope, project-based development is often enough on its own. For smaller, less predictable tasks, hourly support tends to be more practical than committing to a larger engagement. For an ongoing roadmap, where your Odoo environment keeps evolving alongside your business, a dedicated Odoo developer can provide continuous development capacity without you having to restart the hiring process every time a new need comes up. And for broader ERP requirements that go beyond development alone, you may need implementation, customization, integration, and managed support working together, not development in isolation.
Versich provides Odoo development through project-based, hourly, and dedicated engagement models, backed by broader capabilities across implementation, customization, integration, migration, upgrades, and managed services. Explore our Hire Odoo Developer page to see how we structure engagements. Whichever model fits your situation, the goal is the same: an Odoo environment that's genuinely built around your business, not just technically functional.
Conclusion
The businesses that end up happiest with their Odoo developer, whether freelancer, agency, or dedicated hire, are almost always the ones that asked real, specific questions before signing anything, rather than judging candidates on portfolio size or price alone. These ten questions are designed to surface the thing that actually matters: whether the person or team in front of you understands the difference between what Odoo can already do and what genuinely needs to be built, and whether they've got the discipline to build it in a way your business can maintain for years, not just months.
The goal of an Odoo developer interview isn't to prove that you understand Odoo better than the person you're evaluating. It's to find out whether that developer genuinely understands your environment, your business requirements, and the consequences of the code they're about to add to your system. Ask about the Odoo versions they've worked with. Ask about their experience with the specific modules your business relies on. Ask how they decide between configuration and customization. Ask how they handle integrations, testing, and security. Ask how they plan for future upgrades. Ask who owns the code and the documentation. And ask exactly what happens after deployment, when the real test of the relationship actually begins. Those answers will tell you far more about whether this is the right person or team to hire as your Odoo developer than a job title, a portfolio, or an hourly rate ever could on their own
