You have a SaaS idea, no engineering team, and a decision to make about who builds it. Before you talk to anyone, take ten minutes and write down how many independent workstreams your first version really has. That one number decides most of what follows, and it stops you from paying for a team you don't need.
How do you hire SaaS developers for a first version?
To hire SaaS developers for a first version, match the engagement to your stage: one full-stack developer for a tightly coupled MVP, an agency for parallel workstreams, a cloud-vendor program only after launch.
Hiring is not a geography problem anymore. In the Stack Overflow 2025 Developer Survey, 32.4% of respondents said they work fully remote, so a developer who sits in another country is an ordinary hire, not a risk in itself. What matters is the fit between the work and the structure you choose.
| Option | Best fit | Main risk |
|---|---|---|
| Solo full-stack developer | MVP with tightly coupled work: auth, database, payments, deploy | Throughput is limited to one person |
| Agency | Parallel workstreams such as mobile, web dashboard and marketing site | Coordination overhead; the people who pitch are often not the people who code |
| Cloud-vendor program | Teams that already have a product and are scaling tenancy and billing | It is guidance and tooling, not a build team |
Why does a solo developer often beat a team on an MVP?
An MVP usually has one workstream. Authentication, data model, core screens, payments and deployment all depend on the same early decisions, so splitting them across five people mostly creates waiting. One developer who owns the whole slice makes consistent decisions with no handoffs.
The public record is in my case studies. Callidus, a multi-tenant clinic SaaS on React, Firebase and Stripe Connect, went from start to production in roughly 10 weeks with me as the only developer. BookBed, built on Flutter, Firebase and Stripe for six platforms, was built solo over roughly six months. Those are two data points about one builder, not proof that solo always wins.
The limit is throughput. One person can only do so much at once, so truly parallel work stretches the calendar. Fred Brooks's 1975 observation, summarized on Wikipedia's Brooks's law entry, is that adding people to a late software project makes it later, partly through communication overhead and limited task divisibility. A five-person team has ten possible pairwise communication links (5 x 4 / 2), a solo developer has none.
AI-augmented workflows move the point where you need a second person further out, because one developer can cover more ground. I explain how in AI-augmented development. This is my recommendation, not a guarantee: start with the smallest accountable unit that can ship your next milestone, and add people when you hit a real parallelism wall, not in anticipation of one.
When is an agency or a cloud-vendor program the better choice?
An agency earns its fee when you have parallel workstreams that need different specialists at once, for example a native mobile app, a web dashboard and a marketing site moving together. Before you sign, read how to vet a SaaS development agency, and compare the models in solo developer vs agency vs in-house.
Cloud-vendor material is a different category. AWS's SaaS Lens for the Well-Architected Framework describes how to design, deploy and architect multi-tenant SaaS workloads on AWS, and it is written for CTOs, architects, developers and operations teams. That is review material for people who already run a product. If you're reading this to find someone to build version one, it isn't your answer yet. The AWS SaaS Factory guide on this site covers where such programs fit.
For a regional view of the same choice, see outsourcing SaaS razvoj resursi, which is written for founders in the Balkans.
What does outsourcing SaaS development really cost?
The number on the proposal is the smallest part of the cost of outsourcing SaaS development. Coordination overhead, rework and lock-in decide whether the engagement looked cheap or expensive in hindsight, and only lock-in is fully under your control before you sign.
Which hidden costs should you price in?
Coordination overhead. Every extra person adds communication paths, and time spent keeping people in sync is time not spent shipping. A bigger team is not automatically faster per unit of budget.
Rework. Code written by someone who has never built your category of product often gets thrown away. A developer who has already built a multi-tenant system has seen the tenant-isolation problem before and doesn't rediscover it on your budget. That is an inference from how the work is structured, so test it in the vetting conversation below.
Lock-in. If the repository sits in the vendor's account, the cloud accounts carry the vendor's name, or a per-seat license attaches to software built for you, leaving gets expensive. The fix is contractual and free to ask for up front. Put it in writing and then check it against the real accounts, because a clause nobody verifies protects nobody.
For rate bands and how to read a quote, go line by line through the cost to outsource SaaS development and software development cost and pricing. I quote my own fixed-scope work on request rather than publishing a rate, because scope drives the number. To size your idea before any call, use the SaaS MVP development guide.
How do you vet a development partner so you don't get burned?
Vet a development partner by replacing claims with evidence: ask for live production software, for proof they've solved your product's hard problems, and for a technical conversation with the person who will write your code.
Filter one: can you use something they shipped today?
Ask for a live URL you can open and click through now. A deck, a Figma file or a screen recording isn't software in production. Pizzeria Bestek, a React and Supabase ordering app in four languages, is the kind of artifact you should be able to load and use end to end. If a partner can't point you to anything live, treat their other claims with caution.
Filter two: have they solved the hard parts of SaaS?
Tenant isolation is the big one. If customer A can ever see customer B's data, that is a breach, not a bug. In Callidus, every clinic's data lives under its own tenant path in Firestore, with JWT claims carrying the tenant and role and Firestore security rules enforcing it. Read multi-tenant SaaS architecture to learn what you're vetting for. Billing is the next one, covered in SaaS billing and payments, and rushed security and compliance work accumulates debt that later blocks larger customers, covered in SaaS security and compliance.
Filter three: who actually writes the code?
At larger shops the person in the sales call often isn't the person who builds. Ask to speak with the developer who will do the work, and have them walk you through a technical decision on a past project: what the options were, what they picked and what they'd change. Fifteen minutes of that tells you more than a case-study PDF. A useful follow-up: ask what they would cut from your scope to hit the first deliverable date. Someone who has shipped before answers with specifics, and someone who hasn't answers with reassurance. Put two candidates' answers side by side before you choose. The full checklist is in how to vet a SaaS development agency.
What should the contract guarantee before you sign?
Four clauses protect you whoever you hire, and each costs nothing to ask for before work starts: ownership of code and accounts, a dated first deliverable, a written scope with a change process, and a documented handoff.
- Ownership of code and accounts. The repository lives in your GitHub organization, where people with the owner role manage access to the organization's resources. Hosting, database, payments and email accounts are created in your name from day one, and you should log in to each one yourself in week one to confirm you hold the owner role. Pizzeria Bestek followed this pattern: it was a fixed-price build with full asset handover, so the restaurant owns the codebase.
- A dated first deliverable. Ask for a working slice of real software within weeks, not a six-month plan with the first visible result at the end. If a partner can't commit to something usable early, expect the timeline to slip. For reference, my own SaaS MVP engagements are scoped at 6 to 12 weeks.
- Written scope and a change process. State what the fixed scope includes and how changes get priced. The SaaS MVP development guide helps you draw that boundary so version one stays shippable.
- Handoff and documentation. You should be able to bring in another developer later and have them understand the system: readable code, a real README and operational notes written down. The backend pieces worth checking are in SaaS backend infrastructure.
Once the build is underway, the next question is whether the product converts the people it attracts, which is the subject of SaaS UX and growth. If you're planning a templated product rather than a one-off, building web templates covers that path.
Here is your next step: list your first-version workstreams, then send me the list at info@duskolicanin.com and I'll tell you whether I'd build it solo or recommend a second person.