Inspired by the Past, Built for the Future.

We are a software engineering company focused on product development, data integrations, and generative AI applications, built with an old-school engineering thinking and cutting-edge technology, with a focus on reliability, adaptability, and long-term value.

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Development company inspired by the golden age of technology.

Computer with keyboard and mouse

Setelio is two engineers’ dream, driven by the mission to bring back the timeless principles that made technology revolutionary. Inspired by pioneers like Apple, Microsoft, IBM, Hewlett-Packard, and other visionaries who defined industries, we focus on creating solutions that are built to last, designed with precision, and delivered with purpose.

Most problems come from bad decisions made early. That is where we focus. Define what matters. Make the hard decisions upfront. Commit to them. No shortcuts. We are not here for trends. We are here to get it right from day one.

That mindset carries through everything we deliver. Do the work properly, so it keeps working. Built with the future in mind.

Who we work with.

Setelio partners with startups and small-to-medium businesses (SMBs) to design and build systems that keep the business running and growing. We understand the constraints, trade-offs, and decisions these teams face, and focus on delivering solutions that are built to grow with the business.

  • Rocket

    Startups

    For startups, the biggest risk is not speed, but building something you will have to rewrite later. We build MVPs that get you to market quickly while putting the right foundation in place, so you can validate ideas, move fast, and grow without starting over.

  • Planets

    SMBs

    For SMBs, growth often exposes slowdowns, manual work, and tools that no longer fit together. We focus on improving and connecting what you already use, introducing integrations and automation where they actually matter, so your operations no longer become a bottleneck as the business grows.

What we build.

  • Your Challenge

    Unclear scope, changing priorities, and delayed technical decisions lead to missed timelines, budget overruns, and lack of visibility into delivery progress.

    Our Approach

    We bring structure to product development through clear scope definition, strong architecture, and aligned execution across all parts of the product, adapting the approach based on product stage and complexity.

    Partnered Outcomes

    • MVP with defined scope and clear priorities for the next stage
    • Coordinated rollout of API, web, and mobile components
    • System architecture prepared to support growth
    • Defined deployment processes with monitoring in place
    • Internal systems integrated into the product environment
  • Your Challenge

    AI efforts often start with high expectations but remain at the prototype stage. Chatbots provide inconsistent responses, agents fail in edge scenarios, and RAG quality drops when data is not properly prepared.

    Our Approach

    We design and implement AI solutions based on specific use cases, combining components such as RAG, agents, or automation where they make sense, with a focus on reliability and control.

    Partnered Outcomes

    • RAG pipelines connected to internal knowledge sources
    • AI agents supporting operational and support workflows
    • Chatbots with consistent and controlled responses
    • AI integrations and workflow automation
    • Recommendation systems improving user experience
  • Your Challenge

    Data distributed across multiple platforms leads to inconsistencies, operational delays, and unreliable information, limiting effective decision-making.

    Our Approach

    We connect systems and establish reliable data flows, applying the right integration patterns and synchronization logic depending on system requirements and data complexity.

    Partnered Outcomes

    • Connected platforms with reliable data exchange
    • Data synchronization with clear ownership and control
    • Efficient data transformation pipelines
    • Reduced manual effort through automation
    • Improved data availability across systems
  • Your Challenge

    Websites often underperform due to unclear user journeys, low search visibility, slow performance, and outdated design.

    Our Approach

    We focus on clarity, usability, and modern design, supported by flexible CMS solutions and solid technical performance.

    Partnered Outcomes

    • Website aligned with business needs and user expectations
    • Clear and effective user journeys
    • CMS configured for efficient content updates
    • Search optimization improving visibility
    • Performance improvements across devices and screen sizes

Your steps with Setelio.

A simple process from first call to delivery.

  1. 01

    Initial call

    Quick intro call to understand your goals and challenges.

  2. 02

    Discovery

    We define scope, timeline, and budget, then send a proposal.

  3. 03

    Kickoff

    After signing, we align on communication, workflows, and team.

  4. 04

    Delivery

    We develop, launch, and support as needed.

Why choose Setelio over big companies?

Many assume bigger means better, with more resources, faster delivery, and greater reliability. In reality, size adds layers, slows decisions, and creates distance between you and the people actually building your solution.

Setelio stays lean by design. You work directly with the people responsible for your product, decisions are made quickly, and everything is built with your business in mind, not internal processes.

  • Focused Results

    In large companies, a significant part of your budget goes to coordination and overhead. Here, the work is done by the people you interact with, so your investment goes directly into building your solution.

  • Agile & Adaptive

    No internal bureaucracy or slow approval chains. We align quickly with your workflow and keep progress moving without unnecessary delays.

  • Future-Ready

    Everything is built to handle real usage and evolve over time, without forcing rebuilds as your business grows.

  • No Middleman

    You work directly with engineers, which means faster feedback, clearer communication, and fewer misunderstandings.

  • Shared Success

    We work closely with you and stay involved beyond delivery, treating your goals as our own, not just another project to complete.

  • Transparency

    Clear timelines, realistic scope, and honest communication. The focus is on delivering what actually works.

Industries we serve.

  • Hospitality runs on timing, coordination, and guest expectations. Reservations, guest communication, and internal operations handled in a way that reduces manual work and keeps everything running, even during peak demand.

  • Real estate depends on speed, organization, and follow-ups. Listings, clients, and deal flow structured so teams can respond faster, stay on top of opportunities, and close without losing track of details.

  • Wellness businesses rely on scheduling, client relationships, and repeat engagement. Bookings, client data, and personalized services managed so operations stay under control as the business grows.

  • Art needs proper presentation and reach. Portfolios, sales, and digital experiences set up to present work professionally and connect with the right audience.

  • Productivity depends on how work is structured and executed. Workflows, task management, and collaboration organized so teams reduce manual effort and keep work moving as demands increase.

Tech Stack.

  • .NET
  • TypeScript
  • Golang
  • React
  • Microsoft Azure
  • Docker
  • Postgres
  • Supabase
  • Redis
  • RabbitMQ
  • Next.js
  • Sanity
  • Stripe
  • Clerk
  • OpenAI
  • Pulumi
  • Vercel
  • Claude
  • MongoDB
  • Drizzle

Whether you're launching something new or extending what you already have,
Setelio builds it right from the start so you don’t have to rebuild later.

Pricing Models.

Pricing is aligned with how your project is built, so costs stay transparent and predictable at every stage.

  • You know the cost upfront. Scope, timeline, and deliverables are agreed before development starts, so there are no surprises. Work is delivered in defined stages, with payments tied to progress.

    Best suited for

    • MVPs with defined functionality
    • Websites and landing pages
    • Integrations with clear requirements
    • Products with a fixed feature set
  • Work is billed based on actual hours spent. This allows flexibility to adjust priorities, refine features, and respond to new requirements without being locked into a fixed scope.

    Best suited for

    • Requirements that evolve over time
    • Scope not fully defined upfront
    • Changing priorities during development
    • Experimental or exploratory projects
  • Reserved time with consistent access to the team. Work continues without redefining scope each time, making it easier to move faster, improve continuously, and respond to new priorities.

    Best suited for

    • Continuous product development
    • Ongoing improvements and feature updates
    • Maintenance and support
    • Long-term collaboration and scaling
  • Which pricing model to choose?

    It should fit the scope, from fixed to flexible development, keeping pricing consistent as requirements and priorities change.

in other words:

We deliver results, not just promises.

View case studies

What clients say.

The best way to understand our value is to hear from the people who work with us.

They saw what we needed before we did and made it happen.

Our project mattered to them on a personal level, and that care shows in every part of what they built.

Patrick Jonnson

Founder & CEO at DigiProCure

Pomodollar wouldn't have happened without Setelio

Setelio's team helped me go from zero to fully functional MVP in less than 3 months. They provided insights not only in regards to development but also product design and UX. I can’t recommend them enough to anyone who wants to see their ideas come to life.

Ksenia Larina

Founder & CEO at Pomodollar

Smooth process and a website we enjoy using

Working with Setelio was easy from the first step. They listened, kept communication simple, and delivered a website that fits our goals and is easy for our team to manage.

Innessa Voitovych

Project Manager at CultFood

A smarter platform that saves us money daily

We moved from one old site to a better structure for rentals and sales. Payments and booking are now connected, and we save around 30% on commissions.

Slavko Kojić

Founder & CEO at Royal Living Group

More than a website, a piece of my art

They understood my style right away. The website feels personal, honest, and true to my work.

Gregory Goy

Artist & Founder at Gregory Goy

The website feels like us

Setelio created a website that really shows what we do in Croatia. The colors and marine style feel natural for our brand, and the CRM integration made lead handling easier for the team.

Anton Tsybulsky

Founder & CEO at Gudzem

Our Clients.

Serhii Kokhan

Serhii Kokhan

Engineering & Operations

.NET, Azure, DevOps, TypeScript, Go, cloud architecture, CI/CD pipelines, scalable backend systems, and production integrations.

Lisa Akinfieva

Growth & Delivery

Dynamics 365, Power Platform, Power BI, CRM architecture, process automation, data modeling, and business system integrations.

Not sure where to start with your project?

Let's figure this out together.

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