Hiring a software agency or building an in-house team is one of the most strategic decisions a technology company can make. There is no universal answer: it depends on your stage, your budget, your timelines, and the type of product you need to build.
At Soamee we have worked with startups that hired us as their complete development team, with companies that needed to reinforce their internal team with specific profiles, and with corporations that outsourced complete projects. This guide collects what we have learned across more than 50 delivered projects.
Cost Comparison: Agency vs In-House Team
Cost is usually the first factor analyzed, but it is also the most misunderstood. Hiring an internal team seems cheaper if you only look at salary, but there are significant hidden costs.
Real Cost of an In-House Team (European Market 2026)
| Concept | Monthly Range (per developer) |
|---|---|
| Gross salary (senior) | 4,000 - 7,000 EUR |
| Social security (~30%) | 1,200 - 2,100 EUR |
| Equipment and licenses | 150 - 300 EUR |
| Office space (amortized) | 200 - 500 EUR |
| Training and conferences | 100 - 250 EUR |
| Recruitment process (amortized) | 200 - 400 EUR |
| Management and overhead | 300 - 600 EUR |
| Real total | 6,150 - 11,150 EUR |
Cost of a Development Agency
| Concept | Monthly Range (per developer) |
|---|---|
| Monthly rate senior dev (EU market) | 7,000 - 12,000 EUR |
| No recruitment costs | 0 EUR |
| No HR management costs | 0 EUR |
| No long-term commitment | Flexible |
| Total | 7,000 - 12,000 EUR |
The real difference is smaller than it appears. When you add up all the hidden costs of an internal team, the gap narrows to 10-20%. And that is without counting the opportunity cost of the months it takes to hire and train the team.
Advantages of Hiring a Software Agency
1. Speed to Start
An agency can have an operational team in 1-2 weeks. Building an internal team can take 3-6 months between posting job offers, interviewing, negotiating, and onboarding. For projects with fixed deadlines or for startups that need to validate quickly, this difference is critical.
In our case with TrasterOne, the storage marketplace, we assembled the team and started developing in the first week. An in-house team would have taken months to become operational.
2. Diversified Experience
An agency works with multiple clients, sectors, and technologies simultaneously. This generates cross-cutting knowledge that is difficult to replicate in an internal team focused on a single product.
When we worked with Spherag on their IoT platform for agriculture, we were able to apply cloud architecture patterns that we had refined in projects for WaterScan and Zonehaven. That cross-pollination is a real differentiator.
3. Flexible Scalability
You can scale the team up or down according to project needs. During intensive development phases you need more people; during maintenance phases, fewer. With an in-house team, scaling down means letting people go.
4. Risk Management
If a developer from the agency is not performing, they replace them. If your only senior internal developer leaves, you have a serious problem. The agency absorbs the rotation risk.
Advantages of an In-House Team
1. Deep Domain Knowledge
An internal team lives your product every day. They understand the business context, know the historical decisions, and have a direct relationship with stakeholders. This accumulated knowledge is invaluable for complex long-term products.
2. Cultural Alignment
Your team shares your mission, your values, and your way of working. You do not need to document every decision or maintain such structured communication. The alignment is organic.
3. Intellectual Property and Control
All knowledge stays in-house. You do not depend on a third party to maintain or evolve your product. For companies where technology is the core of the business, this can be decisive.
4. Long-Term Cost
If you have a stable product with continuous development needs for years, the internal team ends up being more economical. The investment in training and culture amortizes over time.
When to Choose an Agency
An agency is the best option when:
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You need speed: Your project has a fixed deadline or you need to validate an idea quickly. We worked with startups like ElDomi where launch speed was critical to capture the student housing market.
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The project is well-scoped: You have an MVP, a migration, an integration, or a project with a clear beginning and end. You do not need a permanent team.
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You need specific expertise: Technologies like IoT, machine learning, complex integrations, or native mobile development require highly specialized profiles that are difficult and expensive to hire internally.
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You are validating the market: Before investing in an internal team of 5-10 people, validate your product with an agency. If it works, you can gradually internalize.
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Your internal team is overloaded: You have a team but they cannot keep up. An agency can absorb parallel projects or workload spikes.
When to Choose an In-House Team
An in-house team is better when:
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Technology is your core business: If you are a technology product company (SaaS, platform), you need total ownership.
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Development is continuous and indefinite: If you will need constant development for years, the internal team is more efficient long-term.
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You need rapid iteration with the business: Products that require constant experimentation (A/B testing, frequent pivots) benefit from the proximity of the internal team.
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You have the ability to attract talent: In competitive markets, attracting and retaining senior developers requires employer branding, culture, and competitive compensation.
The Hybrid Model: Team Augmentation
In our experience, the most effective model for many companies is the hybrid. You have an internal core that maintains product knowledge and vision, and you complement with an agency for:
- Development peaks: Launches, large new features
- Specific expertise: An AI project, a cloud migration, a mobile app
- Dedicated teams: A complete squad from the agency works as an extension of your team
This model works especially well when the agency has experience in web development and can integrate with the client’s existing processes.
With Orquest, for example, we worked as an extension of their product team. Our developers participated in their dailies, used their Jira, and followed their code conventions. For the rest of the team, we were just another member.
Keys for the Hybrid Model to Work
- An internal tech lead: You always need someone internal who understands the architecture and can make technical decisions
- Shared documentation: Confluence, Notion, or whatever you use, but everything must be documented
- Same processes: The agency must adapt to your processes, not the other way around
- Cross code reviews: The internal team reviews the agency’s code and vice versa
- Daily communication: Shared standups, common Slack channels
Real Scenarios from Our Experience
Pre-seed Startup: Agency as Complete Team
A startup with initial funding needs an MVP to validate the market. It makes no sense to hire a team of 4-5 people when you still do not know if the product will work. Hire an agency, launch the MVP in 8-12 weeks, validate with real users, and then decide whether to internalize.
This is how we worked with Invisible Homes, where we built the complete real estate platform with intelligent search.
Scale-up with Overloaded Team: Team Augmentation
A growing company has a team of 8 developers but needs to launch 3 projects in parallel. Instead of hiring 6 more people (a 3-4 month process), they bring in 4 agency developers in 2 weeks and maintain the pace.
Corporate with Specific Project: Agency for Innovation
A traditional company wants to digitize a critical process but lacks internal technological expertise. They hire an agency for the complete project, from discovery to deployment, and then keep a maintenance contract.
This is what we did with InfoAdex, where we digitized their advertising data platform.
Frequently Asked Questions
How long does it take an agency to start delivering?
Typically, a well-organized agency can have the team productive in 1-2 weeks. The first tangible delivery usually arrives in 2-4 weeks, depending on project complexity.
Can you transition from agency to in-house without losing knowledge?
Yes, as long as you have demanded documentation from the start. A good transition process includes: complete technical documentation, knowledge transfer sessions, pair programming during the transition, and a post-transition support period.
What happens if the agency disappears?
This is a real risk. Mitigate it by demanding that the code is yours from day one (repository under your account), that documentation is up to date, and that you use standard technologies that any developer can maintain.
Can I mix nearshore and onshore?
Absolutely. In fact, it is increasingly common to have an onshore core and complement with nearshore developers to optimize costs. From Madrid, we work with clients in the UK and US combining both models. More on this in our guide to nearshore from Spain.
Conclusion
There is no universally correct answer. The decision depends on your context: company stage, budget, timeline, product type, and management capacity.
What we can say after years of experience is that the worst decision is not deciding. Companies that spend months debating between agency and in-house team lose valuable time in the market.
If you need help evaluating which model is best for your case, book a free consultation with our team. We analyze your situation and recommend honestly, even if the best option is that you do not hire us.