Choosing the Right Tech Stack for Your Startup

Start With the Problem, Not the Tech

The most common mistake founders make is choosing a tech stack based on what's trending on Hacker News. The right question isn't "Which framework is best?" — it's "Which technology lets us ship the right product, fast, without painting ourselves into a corner?"

The Three-Question Framework

Before evaluating any technology, answer these three questions:

• Who is building it? The best stack is one your team already knows or can learn quickly. A novel framework with a steep learning curve will slow you down at the worst possible time.
• Who is using it? A B2B dashboard used by 50 people on desktop has very different requirements than a consumer mobile app that needs to work offline on a train.
• How will it grow? Choose technology that can handle your next 12 months, not your hypothetical 5-year scale. Premature optimisation kills startups.

Web App Stacks

For most web applications, the decision comes down to a few proven combinations. We've written about why Next.js is perfect for business websites — here's how the broader stack breaks down:

• Next.js + Supabase: Full-stack TypeScript with auth, database, and file storage out of the box. Ideal for SaaS MVPs.
• Next.js + custom API: When you need fine-grained control over your backend or have existing services to integrate.
• Astro for content sites: Lightning-fast static sites for blogs, marketing pages, and documentation.

Mobile App Stacks

The mobile decision is simpler than it used to be:

• Native (Swift / Kotlin): Best performance, best UX, full access to platform features. The right choice when the app is the product.
• React Native / Flutter: One codebase, two platforms. Good for content-driven apps or when speed-to-both-platforms matters more than pixel-perfect native feel.
• PWA: A website that installs like an app. Fine for simple tools, but limited device integration.

What About Cost?

Technology choice directly affects your budget. Open-source stacks like Next.js and Supabase have no licensing fees, while proprietary platforms can add thousands in annual costs. For a detailed breakdown, see our guide on how much a website costs in the UK.

The Anti-List

Technologies to think twice about for an early-stage startup:

• Microservices on day one — you don't have the traffic or the team for it
• Bleeding-edge frameworks with small communities — support matters more than novelty
• Multiple programming languages in one small team — context switching is expensive

Making the Call

The best tech stack is the one that gets you to launch with the fewest regrets. Pick proven technology, keep your architecture simple, and refactor when you have real data telling you to. If you want a second opinion on your stack, get in touch.