Who we are

A small team. Real guarantees.

Seiora is an engineering team for digital products—web, mobile, AI. We're small on purpose: when you send a message, the reply comes from the same person who writes the code afterward, not a salesperson handing you off to juniors.

How we work

Four rules we don't break, no exceptions.

Seniors build, juniors don't pretend

Seniors don't just sell, juniors don't just build. The senior engineer is in your daily standup, not just at the first meeting. If that sounds normal to you—you haven't worked with most agencies.

Demo every Friday

By 5 PM Friday you see what changed that week, what's next, and how much budget we spent. This forces us to ship, and protects you from unpleasant surprises later.

"No" is a valid answer

If we think the project shouldn't be built, the budget isn't realistic, or we're the wrong team for you—we say so on the first call. We recommend other agencies we work with.

90 days post-launch—included

Bug fixes, minor changes, mentoring your team. After 90 days we agree on a retainer or hand the project off cleanly. Either way, we stay available for questions.

Numbers

What the numbers say

Less promising, more delivering.

50+

Products in production

Months average client retention

Weeks to first working prototype

Days of post-launch support included

Team

Small, focused, consistent in composition.

Seiora is a team with one lead engineer and a network of specialized collaborators we activate per project. No subcontractors, no white-label work behind your back, no people we haven't worked with before.

Who will work on your project—you know before signing. Before we start, we tell you exactly which part of the team handles which part of the project and how much time each person invests. No mid-project surprises, no "we just hired someone new for your project."

The lead engineer is in every conversation. From the first "hello" to two months after launch, the same person is your main point of contact. This isn't marketing—it's a consequence of our size.

Aleksandar Petrović

Founder and Lead Engineer

I started Seiora with three rules drawn from experience: seniors do the senior work, weekly demos are non-negotiable, and we stay after launch. Not because it's revolutionary—but because I've seen too many times how the opposite plays out, and how much clients lose because of it.

Before Seiora, I worked across fintech, medtech, security, and regional tech products—from financial systems running in production for millions of users to medical education platforms, security solutions, and regional businesses. What I saw in every domain was the same: good software isn't complex software—good software is software that doesn't fail when it's needed most.

I personally answer every message. Whether you write through the form, email, or LinkedIn—the reply comes from me, not an assistant.

“The best project is one we can hand off to the client and walk away from—knowing it will keep running long after we're gone.”

Write to Aleksandar

Want to talk?

30 minutes on a call. Write through the form or directly via email—you'll have a reply within 24 hours.

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