Most companies will at some point scratch their heads with the question: should we build an in-house tech/UX team, or bring in an external one?
The question carries quite some weight as the consequences can be significant for speed, cost, flexibility and long-term ownership of the solution. And yet, as with most tricky decisions, there's no universal right answer. The good news is that understanding the big picture helps you choose the approach that serves you the best.
With that in mind, we compiled a list of things to consider in order to make the right call.
Recruiting is slow. Finding a senior full-stack developer or a UX designer with the right experience and culture fit can take months. And that's before onboarding. If you need to have the solution in your hands sooner than later, fishing for a perfect hire might not be an option.
This is especially true when you need expertise in a specific technology, industry, etc. The pool of available candidates narrows quickly, and the competition for the talent gets more fierce. An agency that already has those specialists on the team can get the project up and running quickly.
The question of what capabilities you absolutely need to have in-house is often more nuanced than it might seem. Take UX design, for example. Many companies need serious design work during active product development, but between those phases, a full-time in-house designer would spend a lot of time on the bench. Working with an agency lets you access the right person for the job precisely when you need them, and only pay for the hours that the work actually requires. For specialist skills that are needed intensively but not continuously, this is often a sensible model. Moreover, if you find a go-to agency you really like working with, they'll also be more familiar with your business after each sprint. Our best collaborations have certainly been the ones where we have grown to be an integral part of our clients' teams.
This brings us to our next point: the choice between an in-house team and hiring an agency doesn't need to be binary.
Sometimes, an internal team is strong in most areas but has a genuine gap in one – maybe they're solid engineers but have limited design experience, or they know the product domain well but haven't worked with a particular technology before. In those cases, bringing in an agency to work alongside the internal team is a pragmatic option. It can also be an opportunity for the in-house team to develop new capabilities over time without stalling the development progress.
An often overlooked advantage of working with an external team is that contracts can easily change with the circumstances. If a project is deemed less essential (or ends up requiring less human work due to AI), it's easy to reduce or redistribute the agency's hours. With an in-house team, this might be trickier: legal, financial, and moral responsibilities towards employees makes for a fundamentally different relationship.
In practice, when there's uncertainty about whether a project will bear fruit, working with an agency can make the decision to experiment a lot less risky.
One of the most common concerns about working with an agency is what happens to the code and knowledge of how the system works when the collaboration ends. Will you understand what was built? Can you take it somewhere else? And most importantly: are you dependent on one supplier indefinitely?
Not all agencies answer these questions in the same way. It's important to recognise what potential pitfalls matter in the context of your business and work from there. At Taiste, the code we write belongs to the client. We use well-established technologies and prioritise clear documentation and readability. The logic behind this is straightforward: a client who can take the codebase to another agency, or hand it to an internal team they build later, is a client who chose to work with us rather than one who had no other option. We'd rather earn continued trust than manufacture dependency.
For most organisations, a hybrid model is the best option. The balance can look different as the product matures, teams grow and business priorities change. The companies that navigate it well tend to be the ones who treat the question as an ongoing conversation rather than a box to tick at the start of a project.
And for us agencies, the way to establish real trust is to approach those conversations with the long-term benefit of the client as the first priority.
