Two senior founders, no layers. We build web platforms, APIs and cloud systems for scale-ups and agencies across Europe, in your repo and your time zone.
The two founders do the work themselves. No account managers, no hand-offs, nobody in the middle.
We use AI for code, tests and review, but a person reads and owns everything that ships.
A demo from your repo each week, so you see real progress instead of status reports.
Full-stack work from architecture to production. Same standards and the same two founders, whichever layer you need.
Customer-facing sites on a headless CMS, plus the APIs, back offices and data pipelines behind your product. Built for speed, accessibility and editors who don’t need a developer.
Serverless and container setups with queues, databases and monitoring, sized for what you run today. Storefronts, payments and CRMs connected so data flows without manual work.
AI features inside your product, with a human reviewing what ships.
Portals and dashboards that replace spreadsheets and manual steps.
Each step ends with something you can review, and you can stop at any checkpoint.
A short call, then a written scope with risks, an estimate and what we need from you.
Weekly demos from your repo, with features shipped behind flags.
CI/CD, monitoring, runbooks and documentation.
Optional. Fixes, upgrades and new features, if you want them.
Join your team for a quarter or longer and follow your sprint rhythm.
A defined deliverable with a fixed price or a capped budget.
Extra capacity under your brand and your project management.
Selected work from before Simentisai. Client names left out.
Customer website on a headless CMS, a microservice layer behind it, and APIs for partner ticket sales.
A used-car marketplace for the Benelux with a dealer CMS and integrations that verify listing data.
A credit management platform for payments and invoices, plus automation of manual steps.
A web app for creating physical and virtual events, tied to e-commerce for orders, guests and coupons.
A household water-usage dashboard comparing consumption with an optimal level, with notifications.
They took over a codebase nobody wanted to touch and had it shipping every week within a month. It felt like hiring two senior leads, not an agency.
Two engineers with 20+ years between them. No account managers in between: you talk to the people building your product.
13 years in web development. Focuses on web architecture and AWS, and has led teams of 3 to 20 engineers.
“Architecture is a promise to the team that inherits it.”
Connects complex back ends with polished front ends, from a background in graphics engineering. Works across C#, F#, Laravel and modern JavaScript.
“AI makes us faster. Review keeps us honest.”
Simentisai is a software startup from North Macedonia, founded by two senior full-stack engineers, Stefan Sidorovski and Igor Popovski, with 20+ years of experience between them. We build web platforms, APIs and cloud systems for scale-ups and agencies across Europe.
We are based in North Macedonia (CET) and work in your time zone anywhere in Europe, with working hours that match your team’s. We speak English, Macedonian and Serbian.
Customer-facing web platforms on a headless CMS, plus the APIs, back offices and data pipelines behind them. We also build serverless and container-based cloud setups, connect commerce, payment and partner APIs, add AI features to products, and make internal tools and PWAs.
On the web and back-end side: Contentful, React, Astro, Vue, C#, F#, Laravel, Node.js and PostgreSQL. In the cloud: AWS (Lambda, SQS, DynamoDB, RDS) and Azure. For AI features: Claude and other LLM APIs.
There are three ways to work with us: embedded engineers who join your team for a quarter or longer, a fixed-scope project with a fixed price or a capped budget, or white-label capacity for agencies under your brand. We start with a short call and a written scope with risks, an estimate and what we need from you. A support retainer is optional.
Yes. We use AI for code, tests and review, but a person reads and owns everything that ships. We also build AI features into client products, with a human reviewing what ships.